Upload
hussein-hanoura
View
52
Download
18
Embed Size (px)
DESCRIPTION
metrology
Citation preview
DAE Mechanical Technology
2nd Year
2011-2012
Metrology
(MECH-252)
1. Lesson Plans
2. Operation Sheets
NAVTTC / TEVTA/ JICA
December 2011
This TLM has been developed in the "Project for Development of Center of Excellence of Technical Education", on
Mechanical Technology at Government College of Technology Railway Road (GCT RR), by a collaboration work
among National Vocational & Technical Training Commission (NAVTTC), Punjab Technical Education and Vocational
Training Authority (TEVTA) and Japan International Cooperation Agency (JICA).
Table of Contents Introduction to Measurement 1
History of Measurements 3
Quality Control 5
SI Units—ISO Standards 7
FIT- Tolerance - Allowances 9
Surface Plates 11
Spirit level Engineering Parallel 13
Gauges 15
Gauges 17
Adjustable Measuring Tools 19
Micrometer 21
Dial Indicator 23
Angle measuring tools 25
Angle measuring tools 27
Angle Measuring Tools 29
Precision Measuring instruments 31
Precision measuring instruments 33
Precision measuring instruments 35
Accuracy in measurements 37
Classification of Errors 39
Dial Instruments 41
Dial Instruments 43
Taper Measurements 45
Tool Marker Microscope 47
Profile Projector 49
Optical Flats 51
Mechanical comparator 53
Electrical / Electronics comparator 55
Digital Instrument 57
Digital instrument 59
Digital instrument 61
Coordinate Measuring Machines 63
Gear Testing Machine 65
Back Lash Measurement 67
Digital 3-D Scanner 69
Digital Read OUT 71
1
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 01 Introduction to Measurement Name: Saeed Karim Subject (Course Title) MECH-252 Time: 40 mint GENERAL OBJECTIVES:- The student will be able to know about the subject metrology SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to know about the contents of subject measurement.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
METROLOGY :- Metrology is science of measurements. Scientific Study of measurements is called metrology. Metrology is not concerned to length measurement but also concerned with industrial inspection.
Practice of metrology involves precise measurement. Metrology is mainly concerned with,
i. Establishing the unit of measurements.
ii. Developing methods of measurement.
iii. Researching into the causes of measuring errors and eliminating these.
2
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Objectives of Metrology:- The basic objective is to provide the accuracy at minimum cost.
1. Thoroughly evaluation of newly
developed product.
2. To determine process capabilities.
3. To determine measurement
instruments capabilities.
4. To minimize the cost of inspection.
5. Standardization of measuring
methods.
6. Maintenance of accuracies of
measuring instruments.
Testing & Follow Up:- (to see if leaner accompanied information or skill)
1) Explain Metrology. 2) Describe objectives of metrology. Special Assignment:- (Usually home work) Prepare notes on objectives of metrology. Tools Material & Aids:- Board marker, Duster lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number, date of publication) 1) Engineering Metrology by R.K. Jane.
3
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 02 History of Measurements Name: Saeed Karim Subject (Course Title) MECH-252 Time: 40 mint GENERAL OBJECTIVES:- i) The student will be able to know about the History of Measurements. ii) The student will be able to know about the importance of Measurements. SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand the importance of Measurements.
_
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
History of Measurements:- It is well known saying that knowledge about anything is complete only when it is expressed in numbers and same thing is known about it. Four thousand years ago the parts of human body. Later on, they were standardized.
Science of measurement has made considerable progress when king Henry decided that yard is the distance from point of his nose to the end of his thumb. In 1929 at a meeting of international commission of weight and measure, a universal standard of measurement was approved.
4
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Importance of Measurement:- Measurement is very important in today life. Quality and quantity can never be achieved without measurement. Measurement play key role in quality control without measurement. We cannot know about product whether according to size or not.
1. We need measurement to make
thing with our design or other design.
2. We need measurement to control quality.
3. We need measurement for scientific description.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain History of Metrology year wise. Special Assignment:- (Usually home work)
Prepare notes on the importance of Measurements In modern engineering
Tools Material & Aids:- Board marker, Duster lesson Plan. ____________________________ Reference: - (Author, title, page or chapter number, date publication) 1) Dimensional Metrology by T. Butch .
5
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 03 Quality Control Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about the Quality Control.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to know about the Quality Control.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Quality:- 1. Quality is fitness for use.
2. Quality is conformance to
requirements.
3. Quality should be aimed at the needs of customer, present and future.
i. Customer is king
ii. Correcting and preventing loss.
iii. Customer requirement.
Quality Means Meeting:- Customer agreed requirement at lower cost, first time and every time.
6
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Quality Control:- It is a scientific method of inspection by adopting we get the best product in minimum possible time with minimum cost.
Advantages:- i. Insured rapid inspection.
ii. Fore casting trouble.
iii. Increases output and reduces
waste.
iv. Maintains complete record of daily quality.
v. More economical use of material.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain the purpose Quality Control. Special Assignment:- (Usually home work) Prepare notes on how does Quality Control increase production Tools Material & Aids:- Board marker, Duster, Lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number,publication) 1) Industrial inspection Method by Michelon
7
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 04 SI Units—ISO Standards Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about SI Units and ISO Standards.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to know about SI Units and ISO Standards.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
SI Units :- The 11th general conference of weights and measure recommended a system of fundamental and derived units for international use. This system is named as
SI units.
Fundamental units. Length (l) Mass (m) Time (t) Temperature (T) Current (I) Luminous Intensity (Iv) Amount of Substance (n)
Supplementary Units:-
Plan Angle(α, β, θ, Ф) Solid Angle (Ω)
8
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
ISO Standards:- 1970-European countries made quality Standard. 1979-British standard institute presented quality standard. 1987-ISO standards were presented and approved.
ISO 9000: QM & QA Selection & use ISO 9001: QA in design ISO 9002: Prod. & installation ISO 9003: Final inspection & Test ISO 9004: Guide lines ISO 8402: Quality Vocabulary
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain about standards. Special Assignment:- (Usually home work) Prepare assignment showing quality standards. Tools Material & Aids:- Board marker, Duster, Lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
9
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 4-A FIT- Tolerance - Allowances Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about limit system. SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand and system of limits and tolerances.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Allowance:-
FITS:-
Tolerance:-
Intentional difference between mating parts 1. Clearance allowance 2. Interference allowance
Degree of tightness and looseness between mating parts. Clearance-interference –Transition difference between high limit and low limit. 1. Unilateral 2. Bilateral
10
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Geometric Tolerance:-
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Draw a sketch showing tolerance on difference parts . Special Assignment:- (Usually home work) Prepare notes on Geometric Tolerance. Tools Material & Aids:- Board marker, Duster, Lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
11
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 05 Surface Plates Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about Surface Plates.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about linear measurement s supporting tools.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
CI Surface Plates:-
Glass Surface Plates:-
Granite Surface Plates:-
1. Commonly use 2. Made of cost Iron 3. Wear resistance
1. Light weight 2. Used for accuracy 3. Do not effect in temperature
1. Wear resistant very high 2. Low effect of temperature 3. Neglectable friction
12
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Straight Edge:-
Used to check straightness of parts 1. Flat type 2. Knife type
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Why Surface Plates are used? Special Assignment:- (Usually home work) Draw neat sketch of different Surface Plates. Tools Material & Aids:- Board marker, Duster, Lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Production Engineering by R.B. Gupta.
13
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 06 Spirit level Engineering Parallel Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about supporting tools. SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the Spirit levels and surface gauge.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Spirit level:- Engineer’s Parallel:-
Used to check level of surfaces. 1. Spirit level 2. Engineer’s level
1. Rectangular in shape 2. Used to check parallelism 3. Setting work pieces on machines.
14
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Universal Surface Gauge:-
1. All sides adjustable. 2. Scriber may be tilted in any position. 3. Most suitable tool for layout work.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Describe the use of Surface Gauge? Special Assignment:- (Usually home work) Draw neat sketch of different Surface Gauge showing all parts. Tools Material & Aids:- Board marker, Duster, Lesson Plan. ____________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Slop Theory by Anderson.
15
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 07 Gauges Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about gauges.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the use of different gauges.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Ring Gage:-
1. Standard ring gage 2. Special ring gage
Plug Gage:-
Used to check external diameter of a
shaft or round objects.
Two members go and not go.
Made in pairs
Go ring gage/ not Go ring gage
Used to check internal diameters of a work pieces.
Having two members Go and not go on same gage.
16
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Snap Gauge:- Radius Gauge:-
Fix type Adjustable type Go and not Go members
A thin, flat gage made of steel used for measuring internal and external radius.
Male radius or radius Female radius or Fillet.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Describe the use of different Gauges? Special Assignment:- (Usually home work) Draw neat sketch of different Gauge showing all parts. Tools Material & Aids:- Board marker, Duster, Lesson Plan, gage. _________________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
17
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 08 Gauges Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about gauges.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the use of different gauges.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Angle Gage:- Screw Pitch Gage:-
Consists of different blades. Blades having different fix angle.
Also called thread gage. For checking pitch of threads. Consists of different blades.
18
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Standard Wire Gauge:- Feeler Gauge:-
Commonly known as wire gage or
SWG.
Available in round and rectangle in shape.
Used to measure sizes of narrow slots, gapes.
Consists of number of blades in different sizes.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain the use of feeler Gauge? Special Assignment:- (Usually home work) Draw neat sketch of different Gauge identification. Tools Material & Aids:- Board marker, Duster, Lesson Plan, gage. _________________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Production Technology by R.B. Gupta.
19
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 09 Adjustable Measuring Tools Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about universal Caliper.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the use of different universal Caliper.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Vernier Caliper:-
Precision instrument used for
different measurements. Fix jaw – Sliding jaw Lock- Depth bar –main Scale, Vernier
Scale. Based on relationship between two
different scales. 0.02 & 0.05 mm least count.
20
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Invented by French Engineer Pierre
Vernier in 1631.
Made of stainless steel.
Zero error cannot be removed.
Protect it from dust and dirt.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Take a work piece and measure its sizes. Special Assignment:- (Usually home work) Draw neat sketches showing Vernier measurements. Tools Material & Aids:- Board marker, Duster, Lesson Plan, gage. _________________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
21
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 10 Micrometer Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about Micrometer.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the use Micrometer .
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Micrometer:-
Precision instrument
Used for outside dimensions.
Frame – Main scale, Thimble scale-
lock Ratchet – Anvil – spindle.
Principle- Nut and Bolt Calibrated screw 0.01 mm least count.
22
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Invented by Jean Palmer in 1848. Made of wear resistant steel. Slip gages are used for checking the
accuracy of micrometer used for calibration.
Micrometer stands are used for better
results. Protect it from dust and dirt.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain the use of Micrometer. Special Assignment:- (Usually home work) Draw neat sketches showing micrometer readings. Tools Material & Aids:- Board marker, Duster, Lesson Plan, gage. _________________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
23
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 11 Dial Indicator Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about Dial Indicator.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the function of Dial Indicator .
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Dial Indicator:-
Precision tool used for comparing
size of object with standard and deviation is shown on dial.
Spindle – Bushing – cover Large hand – Small hand Central Lug- revolution counter dial.
Hold in stand for use.
24
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Used for checking parallelism
squareness, alignment roundness. Using light pressure on contract
point of spindle, through gear train and lever system shown on dial.
0.01 mm is least count. Don’t strike with other parts.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain the Dial Indicator. Special Assignment:- (Usually home work) Draw neat sketch of Dial Indicator. Tools Material & Aids:- Board marker, Duster, Lesson Plan, gage. _________________________________ Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
25
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 12 Angle measuring tools Name: Saeed Karim Subject (Course Title): MECH-252 Time: GENERAL OBJECTIVES:-
i) The student will be able to understand the use fix angle measuring tools
SPECIFIC OBJECTIVES:- Expected Entry behaviors 1. The student will be able to
understand about fix angle measuring tools.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Fix angle measuring tools:-
1. Combination square
Square head and grooved steel rule.
2. Try square commonly used for checking squareness and 90o angle.
3. Double square used for checking squarness and 900 angle from both sides.
26
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
4. Die maker square commonly
used by die makers. Adjustable type.
5. Engineer’s Square checking for precision squareess and 90o angle, adjustable type.
6. Center square center head and grooved steel rule.
For locating centre of round objects and checking 450 angle.
Testing & Follow Up:- (to see if leaner accompanied information or skill) Describe the difference between centre square and combination
square. Special Assignment:- (Usually home work) Draw neat sketches of six square for identification. Tools Material & Aids:- Board marker, Lesson Plan, Squares Reference: - (Author, title, publisher, page or chapter number, publication) Slop theory by Anderson__
27
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 13 Angle measuring tools Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know the use of angle measuring tools.
SPECIFIC OBJECTIVES:- Expected Entry behaviors 1. The student will be able to understand
the use of fix angle measuring gauges.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Angle gauges:
i. Thread angle gauges
used for checking pitch of thread ,also called screw pitch gauge. Different size blades/Leaves are fitted in sets.
ii. Grinding gages used for angle checking angle of grinding wheels for accurate grinding.
28
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
iii. Drill angle gage also called drill gage for checking the dia/size of drill bit.
iv. Drill point gage for checking the angle of twist drill.
v. Tool angle gage also called v gage. v shaped, checking for angle of cutting tool.
Testing & Follow Up:- (to see if leaner accompanied information or skill) Describe the use of drill point and Drill gage. Special Assignment:- (Usually home work) Draw neat sketches of gages for identification. Tools Material & Aids:- Board marker Lesson Plan Different pages Reference: - (Author, title, publisher, page or chapter number, publication) Production technology by R.B.Gupta.
29
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 14 Angle Measuring Tools Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- i) The student will be able to know about the use of angle measuring tools. SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand about the use of adjustable angle measuring tools.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Adjustable Angle Measuring tools:-
1-Without graduation angle Measuring Tools i. Sine Bar
a hard grinded steel bar having same dia, two plugs fitted on both sides, used for setting and measuring angles.
ii. Universal Bevel Consists of stock and blade for checking and transferring angles.
iii. Combination Bevel Consists of a stock and two blades for checking angles.
30
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
2-With graduation angle Measuring Tools. i. Bevel protractor
0-900 and 900-0 ii. Vernier Bevel Protractor
1/12o least count iii. Steel Protractor
0-180o iv. Dial Protractor
having dial 1/12o least count.
Testing & Follow Up:- (to see if leaner accompanied information or skill) 1) Explain the use of Dial Protractor. Special Assignment:- (Usually home work) Draw neat sketch of Vernier bevel Protractor. Tools Material & Aids:- Board marker, Duster, Lesson Plan, Protractors. Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
31
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 15 Precision Measuring instruments. Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:-
i) The student will be able to know the use Of precision measuring instruments.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand the use of Vernier Height gage.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Vernier Height gauge:-
i. Used for measuring heights of
different work pieces.
ii. Zero error can be removed/ set.
iii. Commonly available in 0-300 mm size with magnifying glass.
iv. Minimum resolution 0.02 mm.
v. Straight and offset scriber.
vi. Main scale can be moved up and down.
32
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Vernier depth gauge:- i. Used for measuring depth of different work pieces.
ii. Straight and hook type depth bar. iii. Hook type is also used for
measuring external size. iv. Least count 0.02 mm and 0.05m. v. Base must touch on both sides of
work piece. vi. Magnifying glass should be used
for correct measurement. vii. Also called depth caliper.
Testing & Follow Up:- (to see if leaner accompanied information or skill) Describe the use of hook type depth caliper. Special Assignment:- (Usually home work) Draw neat sketch of hook type depth Caliper. Tools Material & Aids:- Board marker, Duster, Lesson Plan, height and depth gage. Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
33
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 16 Precision measuring instruments. Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know the use of precision Instruments.
SPECIFIC OBJECTIVES:- Expected Entry behaviors
1. The student will be able to understand the use of inside Micrometer and depth micrometer.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Inside micrometer:-
i. Commonly used for accurately
measuring internal size. ii. Extension rod and caliper
type. iii. 50mm to 200mm extension rod
type. iv. Minimum resolution 0.01mm. v. Spacing collars- lock and
extension rod are used for measuring different size.
vi. Reverse scale on caliper type inside Micrometer.
34
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Depth Micrometer:-
i. Used for accurately measuring depths.
ii. Fix and adjustable type. iii. Fix 0-25mm/
adjustable 0-100mm. iv. Least count 0.01mm. v. Reverse scale.
vi. Base must touch on both sides of top of work piece.
vii. Standers are used for zero Setting of more than 25mm sizes.
Testing & Follow Up:- (to see if leaner accompanied information or skill) Describe the use of depth micrometer. Special Assignment:- (Usually home work) Draw neat sketch of caliper type Inside micrometer. Tools Material & Aids:- Board marker, Duster, Lesson Plan, Depth micrometer inside micrometer Reference: - (Author, title, publisher, page or chapter number, publication) 1) Engineering Metrology by R.K. Jane.
35
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 17 Precision measuring instruments. Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know the use of Precision measuring instruments.
SPECIFIC OBJECTIVES:- 1. The student will be able to understand
the use of thread Micrometer- Vernier micrometer.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Thread micrometer
i. Used for measuring pitch of threads
accurately
ii. Effective or pitch dia
iii. Double vee type anvil and spindle.
iv. Conical and vee type anvil and spindle.
v. Conical type anvil and spindle.
vi. Least count 0.01m.
vii. Also available in inch system.
36
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Hot gauge micrometer. Vernier micrometer.
i. Used for measuring the size
Of hot work pieces. ii. Special type anvil and spindle for
hot work pieces. iii. Insulated frame and ratchet. iv. Thermal expansion.
v. Used for very accurately measuring external dimensions
vi. Vernier scale is engraved on barrel.
vii. Least count 0.001mm.
Care= never use as gage.
Testing & Follow Up:- (to see if leaner accompanied information or skill) Name the micrometer used for very accurately Measuring the external dimensions Special Assignment:- (Usually home work) Draw neat sketch of Vernier micrometer Showing Vernier scale Tools Material & Aids:- Board marker, Duster, Lesson Plan, Micrometers Reference: - (Author, title, publisher, page or chapter number, publication) 1) Production technology by R.B.Gupta.
37
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 18 Accuracy in measurements Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The students will be able to know 1. The element of metrology.
SPECIFIC OBJECTIVES:- The students will be able to 1. Understand the five basic elements of metrology.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Element of Metrology
There are five basic elements of metrology. These elements are necessary for talking accurate measurement.
Standard: Environment, thermal expansion,
holding method may affect standard. Work piece: Neat and clean, free from dust and dirt.
Instrument: Regular use of instrument friction,
magnetic force. Person: Improper handling, improper training, lack of knowledge and skill, selection of Tools.
Environment: Improper temperature, light, vibration effect accuracy of measurements.
38
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Random Errors: Error in measurements which are difficult to control.
1. Difference in setting of work piece
and standard
2. Difference in joint of measuring instruments.
3. Friction
4. Invisible lines
5. Wear Tear in gauges
Testing & Follow Up: - (to see if leaner accompanied information or skill) Explain random errors Special Assignment: - (Usually home work) Prepare a chart showing classification of errors. Tools Material & Aids:- Board Marker, Lesson plans. Reference: - (Author, title, publisher, page or chapter number, publication) Metrology by M. Ghias
39
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 19 Classification of Errors Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The students will be able to know about 1. Measuring Errors
SPECIFIC OBJECTIVES:- The students will be able to understand 1. Controllable errors 2. Random errors
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Classification of Errors: There are two main types of measuring Errors.
1. Control able or Systematic Error
i. Calibration ii. Mathematical
iii. Ambient Errors iv. Alignment Errors v. Environment
vi. Reading Instruments vii. Elastic deformation
viii. Parallax Error ix. Stylus Pressure
40
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
2. Random Errors:
Error in measurements which are difficult to control
i. Different in setting of work piece
and standard ii. Different in joint of measuring
instruments iii. Friction iv. Invisible lines v. Wear tear in gauges
Testing & Follow Up: - (to see if leaner accompanied information or skill) Explain random Errors Special Assignment: - (Usually home work) Prepare a chart showing classification of errors. Tools Material & Aids:- Board Marker, Lesson plans Reference: - (Author, title, publisher, page or chapter number, publication) Metrology by M. Ghias
41
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 20 Dial Instruments Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The students will be able to use 1. Dial caliper
SPECIFIC OBJECTIVES:- The students will be able to understand 1. Dial Caliper 2. Measurement with dial caliper
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Dial Caliper: An instrument used for measuring internal, external and depth with the help of dial.
Easy to measure and read the scale
Main scale = 1.00 mm
Dial Caliper = 0.02 mm
Main scale – Dial scale
Pointer – Fix Jaw – sliding Jaw—
depth bar – lock
Direct reading
Both metric and inch system
42
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Size available 0----150 mm 0---200 mm 0---300 mm
Provides highly repeatable inside dimensions.
Testing & Follow Up: - (to see if leaner accompanied information or skill)
1. What is beast count of dial caliper?
2. Name the parts of dial caliper? Special Assignment: - (Usually home work) Prepare neat sketch of dial caliper showing measurement of 30-
40mm. Tools Material & Aids:- Dial Caliper (0-200 mm), Lesson Plan Reference: - (Author, title, publisher, page or chapter number, publication) Shop Theory by Anderson Mitutoyo catalogue
43
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 21 Dial Instruments Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The students will be able to use 1. Dial Thickness gauge 2. Dial bore gauge
SPECIFIC OBJECTIVES:- The students will be able to understand 1. Use of Dial instruments
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Dial Thickness gauge: The instrument used for measuring thickness of small parts with the help of dial.
Measurement thickness with
simple operation
Measuring faces high flatness,
parallel and excellent durability
Suitable for inspection small parts
on shop floor
Dial
Small pointer
Large pointer
Frame – indicator – contact point –
Anvil – spindle Lifting lever
44
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Dial Bore Gauge: Used for inspection internal dimensions, holes and bores.
Carbide tipped contact point for
durability
Easy zero adjustment
Interchangeable anvils having wide
range of measurement
Measuring diameter of small holes
Available in both inch and metric
system
Different ranges
Testing & Follow Up: - (to see if leaner accompanied information or skill) Name the parts of dial thickness gauge Special Assignment: - (Usually home work) Draw neat sketch of dial bore gauge showing parts Tools Material & Aids:- Lesson Plan, Dial thickness gage, Dial bore gage Reference: - (Author, title, publisher, page or chapter number, publication) Mitutoyo catalogue
45
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 22 Taper Measurements Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The students will be able to know 1. Gauge blocks and sine bar
SPECIFIC OBJECTIVES:- The students will be able to understand 1. Use of gauge blocks and sine bar.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Gauge Block: i. Slip gauges
ii. Johnson gauges Invented in 1950 by a metrologist Johnson.
Made of special hardened steel whose two faces are used for accurate measurement.
Standard for measurement
Used for calibration
Available in square and
rectangular shape
Cohesive and wiring type
AA, A, B according to tolerance
2, 1, 0, 00, and calibration grade
46
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Sine Bar: A sin bar helps us learning something about angles.
A steel bar has a cylinder near each
end form a hypotenuse
Designed with a distance between
the cylinders
Common size (5” – 10”)
(12.7 – 25.4 cm)
Used for accurately measuring
angles
Testing & Follow Up: - (to see if leaner accompanied information or skill) Describe grades of gauge blocks Special Assignment: - (Usually home work) Draw a neat sketch of sine bar forming triangle with a hypotenuse
of 5” Tools Material & Aids:- Sine Bar (125 mm), Lesson Plan Reference: - (Author, title, publisher, page or chapter number, publication) Dimensional Metrology by Ted Busch Roger Horlow
47
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 23 Tool Marker Microscope Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about tool makers microscope
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Tool makers microscope Attachments
The tool makes microscope is an optical measuring machine equipped for external and internal leng the measurement. i) Centre stage for mounting cylindrical
components. ii) Angel measuring oculars iii) Double image ocular iv) Optical feeder v) Projections screen
SPECIFIC OBJECTIVES: - The student will be able To understand the working of toll makers microscope
Expected Entry Behaviours
48
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Main parts
Working
Rotatable- measuring stage swing able head –ocular projective screen micrometer objective lens The component being measured illuminated by light method parallel bean of light illuminates the lower side of work piece which is than received by objective lens in its way to prism that deflects the lights rays in the direction of measuring ocular and projection screen
Testing & Follow Up: - (to see if leaner accompanied information or skill) Name of the main parts of tool makers microscope
Special Assignment: - (Usually home work)
Draw neat sketch of tool makers microscope
Tools Material & Aids:-
Lesson plan duster board makers
Reference: - (Author, title, publisher, page or chapter number, publication) Metrology by syed Skaykat Abbas
49
LESSON PLAN
TITLE OF TOPIC (Short, Description) Lesson No: 24 Profile Projector Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about profile Projector
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Profile Projector Profile projectors are used to examine screen threads, bevel greas and similar forms
i) In profile projector work piece set at an angle to the optical path or the illumination beem must be moved to the profile
Projection screens are of two types . i) Translucent ii) opaque
SPECIFIC OBJECTIVES: - The student will be able To understand the use of profile projector and profile measurment
Expected Entry Behaviours
50
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Diascopic projection
Is projection through films, transparencies and
similar material
Episcpoic projection
Is projection of the surface of opaque objects
which is used most often to examine engraved
surfaces, embossed patterns
The greatest limitation of profile projection is that we must ensure that the part feature being examining lies in the palen of sharpens . this plane is part of screen that is normal to the optical axis Importance i) large number of part features are
examined in two dimension simultaneously
ii) much measurement is direct which is more reliable than transfer method
Testing & Follow Up: - (to see if leaner accompanied information or skill) Describe two uses of profile projector
Special Assignment: - (Usually home work)
Draw neat sketch of profile projector
Tools Material & Aids:-
Lesson plan duster board makers
Reference: - (Author, title, publisher, page or chapter number, publication) Dimensional Metrology by Ted Busch Roger Harlow
51
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 24-A Optical Flats Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about optical flats
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Optical flats Optical flats is a transparent with one face finished to near perfect flatners
The primary instrument that use light is optical flat. Optical flat have one face finished lightly prefect. When this face is placed on another nearly flat surface, we can see light bands, or “fringes” also know as inter face which correspond to the distance separating the two surfaces .
SPECIFIC OBJECTIVES: - The student will be able To understand the use and application of optical flats
Expected Entry Behaviours
52
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
There are four primary application of optics 1. magni fication the visual enlargement
of an object for precise measurement 2. alignment
using light rays to establish references such as liners and planes
3. interferometry using the leanomenon of light to measure
4. using the known wave length o flights as the absolute standard of length
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Describe the use of optical flats
Special Assignment: - (Usually home work)
Draw neat sketch of optical flats
Tools Material & Aids:-
Lesson plan duster board makers sketch flexi
Reference: - (Author, title, publisher, page or chapter number, publication) Dimensional Metrology by Ted Busch Rogerr Horlwo
53
LESSON PLAN
TITLE OF TOPIC (Short, Description) Lesson No: 25 Mechanical comparator Name: Saeed Karim Subject (Course Title) MECH-236 a Time: GENERAL OBJECTIVES:- The student will be able to know about Comparison measurement and mechanical Comparator
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Mechanical comparator Mechanical dial comparators are indicator with stands that incorporators their own reference surface
Comparators are precision measuring instrument used. Comparative measurements between work and standard Types of mechanical comparators i) cam and geor type ii) rock and geor type iii) high amplification iv) Read type
High amplification and reed type are now is use, other have obsolete.
SPECIFIC OBJECTIVES: - The student will be able To understand comparison measurement, mechanical comparator its types and uses
Expected Entry Behaviours
54
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Parts Base – column – arm indicator head spindle lifter table Principle The movement of measuring tip attached at the end of the pointer through a mechanism of substituting a more accurate linear to rotary transducer Uses i) Comparison ii) Gauging
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Describe the mechanism of mechanical comparator
Special Assignment: - (Usually home work)
Draw neat sketch of tool mechanical dial comparator with stand
Tools Material & Aids:-
Dial comparator – flexi – board marker
Reference: - (Author, title, publisher, page or chapter number, publication) Dimension Metrology by Ted Busch Rahbar Metrology by Hafeez
Mughal
55
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 26 Electrical / Electronics comparator Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about electrical And electronics comparator
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Electrical comparator This comparator is also known as electromechanical measuring systems as this employ an electromechanical device which converts a mechanical displacement into electrical input signal
Simple form of basic electric equipment. Dial indicator mounted on stand Switches are attached by the motions of indicator spindle Signal light limit indicator. When indicator hand reaches prescribed tolerance limits the preset switches close. Yellow light signal undersize, red light signal oversize, green light signal with in tolerance limits.
SPECIFIC OBJECTIVES: - The student will be able To understand the working of electrical and electronics comparator
Expected Entry Behaviours
56
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Electronic comparator
Electronic instruments are popular. It is better
to use an inexpensive instrument, but
electronic instrument reduced time of checking
size, measuring size. The rate of measurement
make electronic instruments perfect of
dynamic measurement
Rapid operation even at light amplification. Multiple amplification ranges in same instrument Limited self checking Electronics comparator is based on the principle of application of frequency modulation or radio oscillation. By using various adaptors, may be application like external testing can be made. Measuring unit may be small having several magnifications
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Describe the use of the electrical comparator
Special Assignment: - (Usually home work)
Draw neat sketch of electrical or electronic comparator
Tools Material & Aids:-
Comparator – flexi – sketchs – board marker
Reference: - (Author, title, publisher, page or chapter number, date of publication) Dimensional Metrology by Ted Busch Roger Harlow
57
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 27 Digital Instrument Name: Saeed Karim Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about digital instrument
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital micrometer Digital matic micrometer mostly used for outside measurement accurately. Reading is displayed screen
Available in 0-25mm size, large size are also available. Easy to use and check sizes of different parts. May be used as gage having features like that. Dual conversion inch to mm and mm to inch 0.001mm resolution On /off button Zero button Micrometer stand is used for alignment and proper holding stability.
SPECIFIC OBJECTIVES: - The student will be able To understand about digital micrometer and digital caliper.
Expected Entry Behaviours
58
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital caliper
Digital caliper used for measuring outside,
inside and depth dimensions.
Available in different sizes from 0-150to 0-300 mm Easy to use and measure different sizes Dual conversion inch to metric systems and metric systems to inch Resolution 0.01mm On /off button Zero button for removing zero error Used for three types of measurements with the same instrument
Testing & Follow Up: - (to see if leaner accompanied information or skill)
What are the advantages of digital instrument. Describe in detail
Special Assignment: - (Usually home work)
Draw neat sketch of digital micrometer with stand
Tools Material & Aids:-
Lesson plane digital instruments board marker flexi
Reference: - (Author, title, publisher, page or chapter number, publication)
Catalogue
59
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 27-A Digital instrument Name: Saeed Karim Subject (Course Title) MECH-236 a Time: GENERAL OBJECTIVES:- The student will be able to know digital instrument
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital indicator Digital indictor is used to check the variation occurred in work pieces /jobs during production process. It also indicator geometric uniformity of dimension and contour
Available in 0-10mm and 0-25 mm sizes Easy to use and check the variation of work pieces. May be used as gage having features like that Mounted on stand for use Dual conversion inch to mm and mm to inch 0.001mm resolution Zero button
SPECIFIC OBJECTIVES: - The student will be able to use And understand digital indictor and digital depth caliper
Expected Entry Behaviours
60
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital depth caliper
Used for accurately and easily measuring depth
of work pieces size in displayed on screen
Available in 0-100mm size. Large size also available Easy to use and measure depth Dual conversion inch to mm and mm to inch 0.01mm resolution On / off button Zero button for setting on zero
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Name the parts of digital instruments
Special Assignment: - (Usually home work)
Draw neat sketch of digital indicator
Tools Material & Aids:-
Lesson plane, flexi digital instrument- board marker
Reference: - (Author, title, publisher, page or chapter number, date of
publication)
Catalogue
61
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 27-B Digital instrument Name: Saeed Karim Subject (Course Title) MECH-236 a Time: GENERAL OBJECTIVES:- The student will be able to know about digital instrument
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital height gage Digital height gage is used to easily measure the height of different work pieces and layout
Commonly available in 0-300mm size Placed on surface palate or lab table for use Dual conversion inch to mm and mm to inch 0.01mm resolution Zero button for zero setting Straight and off set scribe may be used Angle plate is used for alignment
SPECIFIC OBJECTIVES: - The student will be able to understand about digital height gage
Expected Entry Behaviours
62
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
And supporting work piece on right angle for measuring accurately
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Name the parts of digital height gage
Special Assignment: - (Usually home work)
Draw neat sketch of digital height gage showing parts
Tools Material & Aids:-
Lesson plane, flexi digital height gage - board marker
Reference: - (Author, title, publisher, page or chapter number, publication)
Catalogue
63
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 28 Coordinate Measuring Machines Name: Subject (Course Title) MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about CMM
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Coordinate Measuring Machine Coordinate measuring Machine are powerful metrological instruments CMM enable us to locate point coordinate on the three dimension structure at the same time that they integrate both dimension and orthogonal relation ships
When a computer is added to the CMM it creates an instrument that can automatically perform complex angles is that can learn measurements routines to compare how a piece conforms to its specifications. The greater the complexity of the piece the greater the benefits from a CMM CMM provides so many measurements are widely used for industrial application
SPECIFIC OBJECTIVES: - The student will be able to understand the
working of CMM
Expected Entry Behaviours
64
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
It is different to say when coordinate
measuring machine emerged as a district class
instruments but such metrology pioneer as C.E
Johansson and F.H Rolt Wrote about machines
that could measures in three axis. While the
instruments that these metrologist proposed
were special purpose instrument, today CMM
and interfaced computer provide a variety of
measurement opportunities
Metrologist use the term CMM to refer to instruments that measurements that measure in two axis . Cantilever type Bridge type Column type Horizontal type Gantry type Modes of operation Manual Manual computer assisted Motorized computer controlled Probes All CMM consist of a probe and way to move it along three axis relation to a work piece
Testing & Follow Up: - (to see if leaner accompanied information or skill)
Name the parts of CMM
Special Assignment: - (Usually home work)
Draw neat sketch of CMM
Tools Material & Aids:-
Lesson plane, flexi - board marker
Reference: - (Author, title, publisher, page or chapter number, date of publication)
Dimensional Metrology by The Busch Roger Harlow
65
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 29 Gear Testing Machine Name: Subject (Course Title): MECH- Time: GENERAL OBJECTIVES:- The students will be able to know about gear testing machine.
SPECIFIC OBJECTIVES:- Expected Entry behaviors 1. The students will be able to understand
about gear Inspection.
2. The students will be able to understand
inspection of Gears with machine.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Gear Inspection:- To optimize the gear performance, an accurate and precise inspection and testing is necessary. The maximum life of gear train depends upon the proper inspection and testing of Gears.
1- For a proper identification of
damaged areas during Inspection operation, a magnifying glass, a strong and clear light source and reflector is to be used for best results.
2- If the gears are not properly inspected, it is obvious that gear will fail and damage to other parts.
66
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Gear Testing Machine:- A vital aid in gear inspection process in gear testing machine. It plays an important role in any gear inspection operation.
A gear checking machine among other is supposed to check the following things.
i) Run out. ii) Pitch variation iii) Accumulated pitch variation. iv) Profile/involute v) Lead vi) Stop error vii) Tooth thickness.
Testing & Follow Up: - (to see if leaner accompanied information or skill) Write down the things which are inspected / tested during gear
inspection.
Special Assignment: - (Usually home work) Draw neat sketch of a spur gear.
Tools Material & Aids:- Lesson plan – Flexi – Spur gear Board Marker.
67
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 30 Back Lash Measurement Name: Saeed Karim Subject (Course Title): MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about back lash.
SPECIFIC OBJECTIVES:- The students will be able to understand about back lash measurement
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Backlash:- Standard Amount of Backlash:-
1- The amount of play between teeth of mating gears is called backlash.
2- Difference between tooth thickness and tooth space.
Min. backlash .03xModule Average backlash .04xModule Max. Backlash .05x Module.
68
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
How to obtain backlash:-
1- Excess depth of cut (than
standard/Theoretical working depth) is employed to obtain necessary backlash.
2- A pinion with 20teeth is to drive a gear having 60 teeth and amount of backlash is 0.15 MM is to be obtained by cutting a gear tooth than standard. Excess depth of cut = .15x12 = .30 MM
Testing & Follow Up: - (to see if leaner accompanied information or skill) Calculate the back lash of two mating gears.
Special Assignment: - (Usually home work) Draw neat sketch of two mating spur gears showing back lash.
Tools Material & Aids:- Lesson plan – Flexi, Board Marker
Reference: - (Author, title, publisher, page or chapter number, date of publication) Technology of Machine Tool By SF Krar.
69
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 31 Digital 3-D Scanner Name: Saeed Karim Subject (Course Title): MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about 3D Scanner.
SPECIFIC OBJECTIVES:- The students will be able to understand about the use of 3D Scanner.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
3D scanner:- Benefits: Increase working with complex parts and shapes. Help with design of products to accommodate someone else part. If CAD models are outdated, a 3D scan will provide an update version. Replacement of missing and older parts.
A 3D scanner is a device that analyzes a real-world object or environment to collect data on its shape and possibly its appearance (i.e. color). The collected data can then be used to construct digital, three dimensional models useful for a wide variety of applications
70
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
The purpose of a 3D scanner is usually to create a point cloud of geometric samples on the surface of the subject.
These devices are used extensively by the entertainment industry in the production of movies and video games.
Other common applications of this technology include industrial design, orthotics and prosthetics, reverse engineering and prototyping, quality control / inspection and documentation of cultural artifacts.
Testing & Follow Up: - (to see if leaner accompanied information or skill) What are Benefits of 3D Scanner?
Special Assignment: - (Usually home work) Draw neat sketch of 3D Scanner.
Tools Material & Aids:- Lesson plan – Flexi, Board Marker
Reference: - (Author, title, publisher, page or chapter number, date of publication) Internet - Wikipedia.
71
LESSON PLAN TITLE OF TOPIC (Short, Description) Lesson No: 32 Digital Read OUT Name: Saeed Karim Subject (Course Title): MECH-252 Time: GENERAL OBJECTIVES:- The student will be able to know about Digital Readout.
SPECIFIC OBJECTIVES:- The students will be able to understand about the use of Digital Readout.
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
Digital Readout:-
A digital read out (DRO) is a small computer (display unit) usually with an integrated keyboard and some means of numeric representation.
It reads the signals generated by the linear encoder (or less frequently by rotary encoders) installed to several machine's axes used to keep track of workpiece position.
72
Time allocated
TOPICS,NOTES (Brief) With teacher student activities
Key points/Reminders/Sketch Teaching Aids/Evaluation
The use of DROs are not limited to manual equipment as CNC equipment can usually be switched to manual operation and in this case a form of DRO is simulated on the Control Panel of a robotic machine.
This system is commonly fitted to most machines in today's shops: lathes, cylindrical grinders, milling machines, surface grinders, boring mills and other machine tools to allow the operator to work faster and with greater accuracy.
Testing & Follow Up: - (to see if leaner accompanied information or skill) What are Benefits of DRO?
Special Assignment: - (Usually home work) Draw neat sketch of DRO.
Tools Material & Aids:- Lesson plan – Flexi, Board Marker
Reference: - (Author, title, publisher, page or chapter number, date of publication) Internet
Table of Contents Practice of Graduated Tools Steel 1
Practice of combination Set 3
Practical of supporting tools 5
Practice of Guages 7
Practice of Small Hole and telescopic gauges 9
Practice of outside Micrometer 11
Practice of Intside Micrometer 13
Practice of Depth Micrometer 15
Practice On thread micrometer 17
Practice of Vernier caliper 19
Practice of vernier Height gauge 21
Practice of vernier depth gauge 23
Practice of Angle Measuring 25
Practice of Angle Measuring tools 27
Pracitice of Angle Measuring tools 29
Practice of Angle Measuring tools 31
Use of Sine Bar 33
Calculation to Tolerance 35
Practical of dial instruments 37
Use of Gauge Blocks 39
Practice of Electrical Comparator 41
Practice of Mechanical Comparator 43
Practice for digital Micrometer 45
Practice of digital caliper 47
Digital depth gage 49
Practice of digital Indicator 51
Practice of digital height gage 53
Practice of Gear Testing Machine 55
Back lash Measurement 57
Gear Tooth Measurement 59
Measurement by Thread Gauges 61
Practice of Measurement on CMM 63
Practice of Profile Projector 65
1
Operation Sheet No -1
Operation /job: - Practice of Graduated Tools Steel, Name: Saeed Karim
Hook, Rule Folding Rule Trammels Technology: Mechanical
Subject: - MECH-252 Time & Date:
Objectives: - The Students will be able to
Use Rules and draw straight lines,
Introduction, Preparation & Motivation: - Show sketches / Flexi of rules and trammels
Machines/Equipment/ Tools/ Materials: - Steel Rule, Hook rule, Folding Trammels Surface
plate, Work pieces,
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the work piece on surface plate
2. Place the steel rule on work piece
3. Draw a straight line
4. Measure the length of line with rule
i. Use new rules
ii. Start measuring from one inch or 1 cm
iii. Degrees of rule should be straight and parallel
Application and Try Out : Give exercise to students for practice Safety Precautions: 1. Use steel rule having clearly visible lines. 2. Edges of steel rule should not be broken 3. Start reading form 1 cm
2
Special Assignment: Draw sketches of steel rule showing different measurements.
Drawing / Diagram / Sketch
Reference: Shop theory by Anderson
3
Operation Sheet No -2
Operation /job: - Practice of combination Set Name: Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use the combination set.
Introduction, Preparation & Motivation: - Show flexi of combination set
Machines/Equipment/ Tools/ Materials: - Combination set, work piece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the combination set on surface plate.
2. Fasten the center head / square head. bevel
protractor to blade
3. Set the work piece in any part of or finding center
/ checking squareness and measuring angles.
1. Blade / Grooved Steel rule,
2. Centre bead
3. Square bead
4. Bevel protractor
Application and Try Out : Students should be given exercise of finding centre of round objects
Safety Precautions: 1. Fasten the blade with parts carefully and properly 2. Use scriber pin for layout and working
4
Special Assignment: Draw neat sketch of all the parts of combination set.
Drawing / Diagram / Sketch
Reference: Shop theory by Anderson
5
Operation Sheet No -3
Operation /job: - Practical of supporting tools Name: -
Plates, Straight Edge, Levels Technology: Mechanical
Subject: - MECH-252 Time & Date:
Objectives: - The students will be able to use the difference
Surface plates and levels,
Introduction, Preparation & Motivation: - Show flexi of CI surface plate tool makers surface
plate, levels, straight edge.
Machines/Equipment/ Tools/ Materials: - Different surface plates, levels straight edges
engineers parallel
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Clean the surface plate
2. Check the level of plate with spirit level
3. Cheque the surface finish of surface plate with
master square and straight edge.
4. Place the work piece on surface plate for
measuring
5. Take the measurement
I. Surface plate should be supported firmly
II. Load should be equally distributed on surface
plate.
III. Top should be truly cleaned
Application and Try Out: Students should be given exercise of checking level of surface plate.
Safety Precautions: 1. Protect to of surface plate against damage using cover. 2. Protect it against rust 3. Wiping cloth should be spread over surface plate for tools. 4. Cover when not in use
6
Special Assignment: Draw neat sketch of all Plates, straight edge and levels
Drawing / Diagram / Sketch
Reference: Shop theory by Anderson
7
Operation Sheet No -4
Operation /job: - Practice of Gauges Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. To use fix and adjust gages.
2.
Introduction, Preparation & Motivation: - Show sketches / flexi and original gauges.
Machines/Equipment/ Tools/ Materials: - Ring Gauge plug gauge work pieces
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1) Place the gauges on lab table
2) Place work piece on lab table
3) Set the gauge in work piece or set the work piece
in gauge
4) check size of work piece as per standard
a. Use both go and not go gauges for gauging
b. Ensure that gauging surface is hardened
Application and Try Out: Give exercise of gauging
Safety Precautions: 1. Clean work piece and gauging surface. 2. Check the work piece both in go and not go members. 3. Protect the gauges from dust, dirt and rust. 4. Special Assignment: Draw neat sketch of snap gauge for identification
9
Operation Sheet No -5
Operation /job: -Practice of Small Hole and telescopic gauges Name: Saeed Karim
Subject: - MECH-252 Technology:
Objectives: - The Students will be able to Time & Date:
1. Use the small Hole and Telescopic gauges.
2.
Introduction, Preparation & Motivation: - Show small Hole and telescopic gauges.
Machines/Equipment/ Tools/ Materials: - Show Small Hole Gauge set Telescopic gauge set
work pieces Micro meter.
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the gauges on Lab table
2. Place Work piece on lab table
3. Use Suitable size gauge.
4. Set the gauge in work piece properly
5. Measure the size on micro meter.
1. First approximate measure the size with Vernier
caliper.
2. Secondly select suitable size gauge
Application and Try Out : Give exercise of gauging
Safety Precautions: 1. Clean work piece and gauges. 2. Use carefully as there gages are sensitive 3. Set the gauge accurately 4. Read the size on metric micrometer. Special Assignment:
11
Operation Sheet No -6
Operation /job: -Practice of outside Micrometer Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Show sketches flexi of outside micrometer
Introduction, Preparation & Motivation: - Show sketches flexi of outside micrometer
Machines/Equipment/ Tools/ Materials: - outside micrometer (0-25mm) work pieces
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Check zero error.
2. Hold the micrometer in stand.
3. Set the work piece in anvil and spindle
4. Read the size on main scale.
5. Read the thimble scale
6. Add above readings.
L.C= thimbleofdivisionoTota
scvisiononmaOneSmallDi
.ln
= = =0.01mm
Frame Anvil spindle Haim scale thimble scale ratchet
stop lock
Main supporting part of drill machine.
Application and Try Out: The student should be given exercise for reading micrometer.
Safety Precautions: 1. Micrometer must be held in stand. 2. Ratchet should be used while setting work piece for measuring 3. Do not use on moving ports 4. Cover after Use.
12
Special Assignment: Draw neat sketch of snap gauge for identification
Drawing / Diagram / Sketch
Reference: Engg. Metrology by R.K. Jane
13
Operation Sheet No -7
Operation /job: - Practice of Inside Micrometer Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use inside micrometer.
Introduction, Preparation & Motivation: - Show sketches flexi of Inside Micrometers caliper
type.
Machines/Equipment/ Tools/ Materials: - Inside micrometer caliper types work piece (5-30
mm)(25-50mm)
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Check and remove zero error
2. Set in the work piece properly using ratchet
3. Read the main scale
4. Read the thimble scale
5. Add above readings
Scale is reverse.
Haim scale= 1mm
Thimble scale = 0.01mm
Application and Try Out: The students should be given exercise of measuring internal sizes
Safety Precautions: 1. Set in work piece properly. 2. Read the hidden scale correctly 3. Read the thimble scale correctly 4. Store after use.
Special Assignment: Draw neat sketch of snap gauge for identification
15
Operation Sheet No -8
Operation /job: - Practice of Depth Micrometer Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use depth micrometer.
Introduction, Preparation & Motivation: - Show sketches flexi of Depth micrometer
Machines/Equipment/ Tools/ Materials: - Depth Micrometer (0-100mm) standards work
pieces.
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1) Clean the depth micrometer.
2) Check and remove zero error Using slandered
3) Insert required size rod in depth micrometers.
4) Set the depth micrometer over work piece
5) Measure the size.
L.C= 0.01
Reverse Scale
1-Mian Scale division =1.00 mm
1-small division =0.50 mm
1-Thmble division = 0.01mm
Base must touch on both sides of work piece
Application and Try Out: The students should be given exercises
Safety Precautions: 1. Fit rod and remove zero error 2. Before measuring ensure that edge of hole is free from burrs. 3. Measure and read the scale accurately.
16
Special Assignment: Draw neat sketch of snap gauge for identification
Drawing / Diagram / Sketch
Reference: Machine tool technology By victor e. repp, villard j. meccarthy
17
Operation Sheet No -9
Operation /job: - Practice On thread micrometer Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use thread micrometer
Introduction, Preparation & Motivation: - Show sketches flexi of thread micrometer
Machines/Equipment/ Tools/ Materials: - Thread micrometer (V-anvil type)
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Check and remove zero error.
2. Holde in stand
3. Set the bolt in V. Anil
4. Read the size on main scale
5. Read the size on thimble scale
6. Add above reading
One main scale division =1
One small scale division =0
One Thimble scale division is 0
Frame spindle v shaped anvil
Application and Try Out : The student should be given exercise for reading micrometer.
Safety Precautions: 1. Micro meter should be held in stand. 2. Set the threaded bolt in U-anvi 3. Do not use on moving ports. 4. Store in box after use .
Special Assignment: Draw net sketches showing different sizes
19
Operation Sheet No -10
Operation /job: - Practice of Vernier caliper Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. To use Vernier caliper
Introduction, Preparation & Motivation: - Show sketches flexi and tools
Machines/Equipment/ Tools/ Materials: - Vernier caliper (0-200mm) magnifying glass work
piece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place tools and work pieces on lab table.
2. Check zero error
3. Set on work piece
4. Read main scale
5. Read vernier scale using magnifying glass
6. Add above reading
L.C= One small division on main scale
Total no. of divisions on Vernier scale
1-main scale division =1.00mm
1-vernier division = 0.02 /0.0. mm
LC = 0.02 mm
Or 0.05 mm
Application and Try Out: The students should be given exercise
Safety Precautions: 1. Do not use vernier caliper having zero error 2. Use magnifying glass while reading vernier scale 3. Store in box after use.
20
Special Assignment: Draw neat sketches of vernier caliper showing different size
Drawing / Diagram / Sketch
Reference: shape theory by Anderson.
Dimensional metrology by T. Bush
21
Operation Sheet No -11
Operation /job: - Practice of vernier Height gauge Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use Vernier Height
Introduction, Preparation & Motivation: - Show sketches flexi and height gauge.
Machines/Equipment/ Tools/ Materials: - Vernier height gauge angle plate workpiece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place height gauge on surface plate
2. Place angle plate and work piece on lab table
3. Set zero
4. Set scriber on work piece
5. Read the size on main scale
6. Read the size on vernier scale using magnifying
glass
1-Mian Scale division =1.00 mm
1-vernier division = 0.02 mm
LC= 0.02mm
Application and Try Out : The students should be given exercise
Safety Precautions: 1. Clamp the scriber properly 2. Set the workpiece using angle plate 3. Store in box after using
22
Special Assignment: Draw neat sketch of bevel protractor showing angle of 60
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
Machine tool technology by victor E Repp Villor J Mc Carthy
23
Operation Sheet No -12
Operation /job: - Practice of vernier depth gauge Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use the vernier depth gauge
Introduction, Preparation & Motivation: - Show sketches flexi and vernier depth gauge.
Machines/Equipment/ Tools/ Materials: - Vernier depth gauge (Hook Type) Workpiece –
magnifying glass
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place depth gauge on surface plate
2. Place workpiece on suface plate.
3. Check zero error
4. Set the base of gauge on workpiece
5. Read the size
L.C= 0.02 mm
Or 0.05 mm
Base –Main Scale
Vernier Scale Lock
Fine adjustment screw –depth bar
Application and Try Out: The students should be given exercise
Safety Precautions: 1. Before measuring ensure that edge of bde is free from burr. 2. Base must touch on both sides of hole. 3. Carefully read vernier scale
24
Special Assignment: Draw neat sketch of bevel protractor showing angle of 60
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
Machine tool techonolgy by victer, E Repp Villor J Mc Carthy
25
Operation Sheet No -13
Operation /job: - Practice of Angle Measuring Name: - Saeed Karim
Tools Bevel Protractor Technology: Mechanical
Subject: - MECH-252 Time & Date:
Objectives: - The Students will be able to
1. The Bevel Protractor
Introduction, Preparation & Motivation: - Show sketches Flexi of bevel protractor
Machines/Equipment/ Tools/ Materials: - Bevel protractor Blade workpiece Magnifying glass
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the tools on lab table
2. fasten the bevel protractor in blade.
3. set the protractor on workpiece
4. read the angle
10=60 minutes
Minimum angle measureem
Is 10
Application and Try Out: The students should be given exercise
Safety Precautions: 1. Fasten the protractor in blade properly 2. Read the angle using magnifying glass
26
Special Assignment: Draw neat sketch of bevel protractor showing angle of 600
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
Machine Tool Techonology by Victor, E Repp Villord J Mc Cartty.
27
Operation Sheet No -14
Operation /job: - Practice of Angle Measuring tools Name: - Saeed Karim
Practice of Vernier Bevel Protractor
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use the vernier bevel protractor
Introduction, Preparation & Motivation: - Show chart flexi of vernier bevel protractor
Machines/Equipment/ Tools/ Materials: - Vernier bevela protractror magnifying glass
workpiece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the tools on lab table
2. Fasten the blade in vernier bevel protractor
3. Set the protractor on workpiece
4. Read main scale
5. Read vernier scale using magnifying glass
10 = 60 minutes
Minimum angle measurement
Is ½ 0
Or 05 minutes
Magnify glass
Application and Try Out : The students should be given exercise
Safety Precautions: 1. Fasten the protractor in blade properly 2. Read vernier scale carefully using magnifying glass
28
Special Assignment: Draw neat sketch of vernier bevel protractor showing angle of 600-30
minutes
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
Machine tool techonolgy by victer, E Repp Villor J Mc Carthy
29
Operation Sheet No -15
Operation /job: - Pracitice of Angle Measuring tools Name: -
Practice of steel protractor
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use steel protractor
Introduction, Preparation & Motivation: - Chart . flexi should be shown
Machines/Equipment/ Tools/ Materials: - Steel protractor magnifying glass, workpiece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the tools on lab table
2. Check the blade fitting lock
3. set the protractor on work piece
4. Read the angle
Minimum Angle measurement
Is 10
Lock Magnifying glass
Application and Try Out : The students should be given exercise
Safety Precautions: 1. Check the blade fitting / lock before use 2. Lock the blade while measuring
30
Special Assignment: Draw neat sketch of steel protractor showing angle of 1200
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
31
Operation Sheet No -16
Operation /job: - Practice of Angle Measuring tools Name: - Saeed Karim
Practice of Dial protractor
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use the dial protractor
Introduction, Preparation & Motivation: - Chart flexi should be shown
Machines/Equipment/ Tools/ Materials: - Dial protractor magnifying glass workpiece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place the tools on lab table
2. check the dial scale and pointer
3. fasten the blade properly
4. set on workpiece
5. Measure main scale
6. Measure dial scale
10= 60 minutes
Main Scale =10
Dial Scale = 1/12 0 or
Or 05 minutes
Dial Scale –pointer
Application and Try Out : The students should be given exercise
Safety Precautions: 1. Fasten the blade properly 2. Read dial scale accurately
32
Special Assignment: Prepare neat sketch of dial protractor showing 600-15’
Drawing / Diagram / Sketch
Reference: Metrology by M. Ghias
33
Operation Sheet No -17
Operation /job: - Use of Sine Bar Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Use the Sine Bar
Introduction, Preparation & Motivation: - Show the sketch of Sine bar
Machines/Equipment/ Tools/ Materials: - Sine bar (0-5”), Guage block calculator
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Clean the sine bar and points of application on
the job
2. Set the sine bar
3. Set the gauge blocks under the sine bar
4. Set the Vernier bevel protractor to check the
angle of inclination of the job surface
5. Calculate the angularity using trigonometric
function
tan Perpendicular
Base
Sin Perpendicular
Hipotenuse
CoSin Base
Hypotenuse
Application and Try Out: The students should be given exercise
Safety Precautions: 1. Clean surface, work piece, sine bar 2. Omit the air gap between gauge bloc 3. check angle of inclination with vernier bevel protractor before calculation 4. Calculate carefully.
Special Assignment: Draw neat sketch of sine bar showing application
35
Operation Sheet No -18
Operation /job: - Calculation to Tolerance Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Calculate tolerance and allowance
Introduction, Preparation & Motivation: - Lesson Plan tolerance
Machines/Equipment/ Tools/ Materials: - Calculator Board marker duster
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Tolerance
Difference between High limit and low limit
i. Unilateral + or –
ii. Bilateral
i. Basic size =40.00 mm
Tol =0.20 mm
H.L = 40.20
L.L = 39.80
Total Tolerance = 0.40 mm
ii. Gauge tolerance
10% of total tolerance
10% of 0.40=0.04 mm
Subtract from high limit add in low limit
Application and Try Out : The students should be given exercise
Safety Precautions:
1. Calculate the high limit and low limit carefully 2. Use calculator for decimal fraction
36
Special Assignment: Draw neat sketch showing Unilateral and bilateral tolerance.
Drawing / Diagram / Sketch
Reference: Machine tool technology by Victor E Reff Villord J Mc Cortty
37
Operation Sheet No -19
Operation /job: - Practical of dial instruments Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. Dial instruments
Introduction, Preparation & Motivation: - Show the sketches of dial instruments
Machines/Equipment/ Tools/ Materials: - Dial caliper dial thickness gauge dial indicator
Steps/Procedure/method Key Points/Precautions For Skillful Performance
1. Place all instruments on lab table
2. clean all the tools and work piece
3. Set the instrument on work piece
4. Read main scale
5. Read dial Scale
6. Add above readings
LC=0.05mm
Or 0302 mm
Main scale =1.00 mm
Main scale= 40.00 mm
Dial scale = 0.36 mm
= 40.36 mm
Application and Try Out : The students should be given exercise
Safety Precautions:
1. Set zero / Remove zero error 2. Set work piece properly 3. Read / pointer carefully
38
Special Assignment: Draw neat sketch of square gauge blocks also calculate the size for 64.75 mm
Drawing / Diagram / Sketch
Reference: Dimensional Metrology by T. Busch Roger Horlow
39
Operation Sheet No -20
Operation /job: - Use of Gauge Blocks Name: - Saeed Karim
Subject: - MECH-252 Technology: Mechanical
Objectives: - The Students will be able to Time & Date:
1. To use the gauge blocks
Introduction, Preparation & Motivation: - Show the sketch and flexi of gauge blocks
Machines/Equipment/ Tools/ Materials: - Gauge block set micrometer
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Following procedure is used
i. Write the desired figure on a piece of paper.
ii. Start at the top of gauge block set.
iii. Choose a block from complete mm in row
iv. Than choose decimal number block
v. Efforts should be made not to select more than
five blocks for on setting
The process of combining gauge blocks together to
make themselves adherings calle warnings.
44.051
1.001 - 1.001
43.050
1.05 - 1.05
42.00
4.50 - 4.500
37.50
12.50 - 12.50
25.00
25.000
44.051
Application and Try Out: The students should be given exercise
Safety Precautions:
1. Clean the gauging surface using soft tissue
2. Place the blocks tag ether make + Sign slide upper block over lower block with circular motion
3. Blocks should be separated by same method
4. Do not pull the blocks
40
Special Assignment: Draw neat sketch of square gauge blocks also calculate the size for 64.75
mm
Drawing / Diagram / Sketch
Reference: Dimensional Metrology by T. Busch Roger Horlow
41
Operation Sheet No -21
Operation / Job: Practice of Electrical Comparator Name:__ Saeed Karim
Subject: Mech-252 Technology___________
Time & Date:__________
Objective: The Student will be able to sue the electrical comparator
for comparison and gauging
Introduction, preparation & Motivation: Show sketch/flexi of electrical comparator.
Machines/Equipment/Tools/Material: Electrical comparator –comparator stand power supply
unit Work pieces single light limit indicator
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. place for all the tools on lab table
2. clean all the tools
3. clamp the comparator on stand
4. set the comparator with signal light
limit indicator
5. set the zero
6. set the tolerance
7. place the work piece under spindle tip
8. Note the variation
9. Look at signal light
10. Repeat this practice
Power supply unit
Signal light limit indicator
Yellow light-- under size
Red light -- over size
Green light --within limits
Application and Try Out: The student should be given exercise for practice
Safety precautions:
1. Use comparator is dust proof lab 2. Use instrument oil on sliding surface. 3. Use light pressure while handling. 4. Electric gauge way show error if power supply is not proper voltage
42
Special Assignment: Draw neat sketch of Electrical comparator with single light indicator
Drawing /diagram /Sketch
References: Rahbor Metrology by Hafeez Mughal
43
Operation sheet - 22
Operation / Job: Practice of Mechanical Comparator Name:__ Saeed Karim __
Subject: Mech-252 Technology:___________
Time & Date:___________
Objective: The Student will be able to sue the Mechanical comparator
for comparison and gauging
Introduction, preparation & Motivation: Show sketch/flexi of Mechanical comparator
Machines/Equipment/Tools/Material: Mechanical comparator dial comparator comparator
stand, Standard – wrokpiece
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place all the tools on lab table
2. Clean all the tools
3. Clamp the comparator in stand
4. Set the comparator at standard / basic size
5. Set tolerance limits on dial comparator
6. Place the work piece under spindle tips
7. Note the variation
8. Repeat this practice
Adjust height of head and locket
Zero setting
Probe for lifting spindle
Application and Try Out: Give exercise to students for practice
Safety precautions:
1. Use comparator is dust proof lab under temperature control
2. Use instrument oil on sliding place
3. Use light pressure which handling.
4. Avoid unnecessary sliding of components on granite base and under spindle
44
Special Assignment:
Draw neat sketch of Mechanical dial comparator in stand
Drawing /diagram /Sketch
References: Rahbar Metrology by Hafeez Mughal
45
Operation sheet - 23
Operation / Job: Practice for digital Micrometer Name:__Saeed Karim ___
Subject: Mech-252 Technology:___________
Time & Date:___________
Objective: The Student will be able to use the digital
Instruments for measurements
Introduction, preparation & Motivation: Show sketch/flexi of Digital Instruments
Machines/Equipment/Tools/Material: Digital Micrometer work piece – Micrometer stand
surface plate
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place the work piece on surface plate
2. Place the digital instruments on lab table
3. Mount the micrometer in stand.
4. Set the instrument on zero
5. Place the work piece in micrometer
6. Read the size on screen
Use micrometer stand for alignment and
holding stability
Use new batteries
0.01 resolution
frame – Anvil – spindle
Ratchet LCD - on / off button lock
Application and Try out: the should be given exercise for checking size with digital instrument
Safety precautions:
Micrometer must be hold in stand
Ratchet should be use while setting work piece for measuring
Do not use on moving parts
Cover after use
46
Special Assignment:
Draw neat sketch of digital micrometer showing reading 20.50mm
Drawing /diagram /Sketch
References:
47
Operation sheet - 24
Operation / Job: Practice of digital caliper Name:__Saeed Karim ___
Subject: Mech-252 Technology:___________
Time & Date:___________
Objective: The Student will be able to use digital caliper
Introduction, preparation & Motivation: Show sketch/flexi and instrument
Machines/Equipment/Tools/Material: Digital caliper (0-150mm) Work piece
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place all the tools on lab table
2. Check zero error
3. Set the work piece in between jaws
4. Read the size on LCD
1. Set zero before use
2. 0.01mm resolution
3. Use new batteries for better results
4. More than one type of dimension with same
instrument
Application and Try Out: The student should be given exercises
Safety precautions:
1. Do not use digital caliper on moving parts
2. Set work piece between jaws accurately
3. Store in box/cover after use
48
Special Assignment: Draw neat sketch of digital caliper showing size 60.25mm
Drawing /diagram /Sketch
References:
49
Operation sheet - 25
Operation / Job: Digital depth gage Name:__ Saeed Karim __
Subject: Mech-252 Technology:___________
Time & Date:___________
Objective: The Student will be able to use digital depth gauge
Introduction, preparation & Motivation: Show sketch/flexi and digital depth gage
Machines/Equipment/Tools/Material: digital depth gage (0-100mm) Work piece
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place tools and instrument on lab table
2. Clean tool and instruments
3. Set the zero
4. Set the digital depth gage over work piece
5. Read the size
0.01mm resolution
Base must touch on both sides of work piece
for measurement
Base, depth bar LCD
Application and Try Out: The students should be given exercise
Safety precautions:
1. Before measuring ensure that edges of hole are free from burr
2. Carefully set the digital depth gage over work piece
3. Store / Cover when not in use
50
Special Assignment:
Draw neat sketch of DIGITAL Depth Gauge showing reading as 40.35 mm
Drawing /diagram /Sketch
References: Rahbar Metrology by Hafeez Mughal
51
Operation sheet - 26
Operation / Job: Practice of digital Indicator Name:_Saeed Karim ____
Subject: Mech-252 Technology:___________
Time & Date:___________
Objective: The Student will be able to use digital indicator
Introduction, preparation & Motivation: Show sketch/flexi digital indictor
Machines/Equipment/Tools/Material: digital indicator –indicator stand –work piece (0-25mm)
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place all tools and work piece on lab table
2. Clean all the tools
3. Set the digital indicator in stand
4. Place the work piece on stand
5. Set the pointer on work piece
6. Read the deviation in size on LCD
0.01 mm Resolution
Zero setting
Dual conversion
Application and Try Out: Students should be given exercises
Safety precautions:
Properly hold the digital indicator on stand
Set the pointer on work piece accurately
Use new batteries for better measurement
Store / cover after use
52
Special Assignment:
Draw neat sketch of digital indicator with stand showing deviation of 5.15mm
Drawing /diagram /Sketch
References:
53
Operation sheet - 27
Operation / Job: Practice of digital height gage Name:__Saeed Karim ___
Subject: Mech-252 Technology:___________
Objective: The Student will be able to use digital height gage Time & Date:__________
Introduction, preparation & Motivation: Show sketch/flexi and digital height gage
Machines/Equipment/Tools/Material: digital height gage (0-300mm) work piece
Steps/Procedure/Method Key points/Precaution For Skillful
Performance
1. Place all the tools and instrument on lab table
2. Place height gage on surface plate
3. Place angle on surface plate
4. Set the scriber in height gage
5. Place the work piece with angle plate for correct
vertical position
6. Set the scriber on work piece
7. Read the size on LCD
0.01 MM Resolution
Offset scriber
Zero setting
Application and Try Out: The students should be given exercise
Safety precautions:
Clamp the scriber properly
Properly set the work piece using angle palate
Store in a box after use
54
Special Assignment:
Draw neat sketch of digital height gage showing 100.40MM size
Drawing /diagram /Sketch
References:
55
Operation Sheet No -28
Operation /job: - Practice of Gear Testing Machine Name: - Saeed Karim
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: -The students will be able to use gear testing machine Time & Date:
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
Gear testing machine (Gears – WD 40 – Marking Gear – Tap)
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Gear Inspection by Gear testing machine
1- Clean the gear using WD-40
2- Check teeth surfaces using marking color and
Tap.
3- Check Surface area of gear for pitting – spoiling –
c racking.
4- Set the gear in gear testing machine.
5- Check the bare of gear.
6- Check the bearing bore.
7- Fill up the check list of gear inspection.
Application and Try out: Inspect a Spur gear and fill up checklist form.
Safety Precautions / Care:
1. Clean the gear before inspection.
2. Set the gear in machine properly.
3. Carefully fill up checklist.
56
Special Assignment:
Take a spare gear and prepare its check list.
Drawing/Diagram/Sketch:
References:
57
Operation Sheet No -29
Operation /job: - Back lash Measurement Name: - Saeed Karim
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: - Students will be able to Time & Date:
1. Calculate amount of back lash.
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
Feeler gauge – Spur gears WD-40
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Back lash Measurement:-
1- Clean the teeth of driver and driven gears.
2- Mount both gears on driver and driven shaft sat
proper central distance.
3- Slightly rotate the driver gear.
4- Measure back lash between tooth profiles of
driver and driven gears using feeler gauge.
Application and Try out: Describe the other uses of feeler gauge
Safety Precautions / Care:
1. The tooth profile of gear should be clear from defects such as burs, pits etc.
2. Proper central distance should be maintained between shafts.
58
Special Assignment: Take two Spur gears from advance machine shop of 2.5 Module and calculate back lash. Drawing/Diagram/Sketch:
References: Technology of Machine Tool by SF Krar
59
Operation Sheet No -30
Operation /job: - Gear Tooth Measurement Name: - Saeed Karim
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: - Students will be able to Time & Date:
1. Use gear tooth caliper and measure tooth size of Gear
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
Gear tooth caliper – WD 40 work piece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Gear Tooth Measurement by caliper Method:-
1- Clean the gear tooth properly using WD 40.
2- Hold the gear in fixture.
3- Open the vertical beam equal to addendum or
module and set on job.
4- Measure tooth thickness by using horizontal
beam of vernier tooth caliper.
Application and Try out: Measure the tooth thickness for spur gears of 1 Module and 2 Module.
Safety Precautions / Care:
1. Read the tooth thickness accurately.
2. Store tooth caliper in box after use.
60
Special Assignment: Draw neat sketch of gear tooth caliper. Drawing/Diagram/Sketch:
References: Technology of Machine Tool by SF Kror
61
Operation Sheet No -31
Operation /job: - Measurement by Thread Gauges Name: - Saeed Karim__
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: - Students will be able to Time & Date:
1. Use thread gauges and measure different sizes
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
Screw pitch gauge – Threading Gauge – WD – 40 Work piece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Measurements of Threads by Screw pitch Gauge
Measurement of Threads By threads Ring
Gauges
1- Clean the threads of Job and thread ring gauge.
2- Hold the job in proper fixture.
3- Check the size of thread by using thread ring
gauge.
1- Clean the threads of Job and thread ring gauge.
2- Hold the job in proper fixture.
3- Check the size of thread by using thread ring
gauge.
Application and Try out: Check the size of threads of given work piece by screw pitch gauge and
thread ring gauge
Safety Precautions / Care:
1. Use WD 40 to clean the threads.
2. Set the thread gauge on work piece properly.
3. Store the thread gauge after use.
62
Special Assignment: Sketch the thread ring gauge Drawing/Diagram/Sketch:
References: Technology of Machine Tool By SF Kror
63
Operation Sheet No -32
Operation /job: - Practice of Measurement on CMM Name: - Saeed Karim
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: - Students will be able to Time & Date:
1. Use the CMM.
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
CMM, Different Work piece
Steps/Procedure/method Key Points/Precautions For Skillful Performance
CMM
Co-ordinate Measuring Machine.
1- Clean the surface of measuring table.
2- Attach the temperature Sensor.
3- Calibrate CMM with master ball.
4- Place the work piece on measuring table.
5- Adjust moving speed.
6- Turn on Main Power supply.
7- Turn on transformer.
8- Turn on air dryer.
9- Open compressed air valve.
10- Turn on machine power supply button.
11- Press start button.
12- The CMM starts initialization and moves with
reference to each axis.
13- Measure the size.
Application and Try out: What are the functions of CMM?
Safety Precautions / Care:
1- Press the Emergency step button in case of emergency during operation.
2- Be sure to keep your hands and head at a distance from moving range.
64
Special Assignment: Take a job and find its sizes Drawing/Diagram/Sketch:
References: PITAC Lahore
65
Operation Sheet No -33
Operation /job: - Practice of Profile Projector Name: -Saeed Karim
Subject: - Metrology (Mech. 252) Technology: Mechanical
Objectives: - Students will be able to Time & Date:
1. Use the Profile Projector.
Introduction, Preparation & Motivation: -
Machines/Equipment/ Tools/ Materials: -
Profile Projector with accessories work pieces.
Steps/Procedure/method Key Points/Precautions For Skillful Performance
Profile Projector:-
1- Clean the tool and work piece.
2- Set the job in front of lens.
3- Focus the job.
4- Set the magnification.
5- Switch on project.
6- Set x-axis and y-axis for measurement.
7- Read the size of Lcd.
Application and Try out: What are the uses of profile projector?
Safety Precautions / Care:
1- Clean all the tools and job before measurement.
2- Focus properly for good results.
3- Handle the job in hand vise if not set on base.