Auto CAD Lab Manual by Shrungare R R

Lab Manual

in

Auto-Cad - By Er.Shrungare R.R.

Blog ID - www.shrungare3112.blogspot.in Contact no: 9404395896; Mail ID - [email protected] 9011793757

Department of mechanical engg. BSIET,Kolhapur. CAD assignment

Overview:

Computer-Aided Design (CAD) technology has nowadays become part and parcel of a design activity

in a range of sectors including product design, interior design, architecture, production layout, just to mention

but a few. One of the most widely used commercial CAD package is Autodesk AutoCAD. With this software

package one can create two-dimensional (2D) drawings and rendered three-dimensional (3D) virtual models.

Another technology which is being widely used is Rapid Prototyping (RP) which generates physical

prototypes directly from CAD data. Imagine that you can hold a physical model in your hands just a few

hours or even minutes, after you created a 3D CAD model of your design idea in CAD! This 60 hours course

offers the basic training required to generate 2D drawings 3D virtual models using AutoCAD.

Who should attend?

This course is intended to anyone who is seeking to acquire skills in basic 2D and 3D modeling

features of AutoCAD, and who is interested in understanding how physical models can be obtained directly

from CAD. In particular the course is suitable for anyone working in one of the following areas: architecture,

interior design, product design, building services and manufacturing.

Benefits to you in future carrier:

The course will prepare you to sit for the Solid modeling (CAD/CAM). The course will equip you with

skills on how to create professional 2D drawings and provide you with the foundations to create 3D models.

Having personnel trained on these aspects, will certainly be of a great benefit to employers.

Companies will get the know, how to efficiently and rapidly communicate the design solution being

developed to their clients, by means of professional drawings and 3D physical models.

Learning outcomes:

By the end of this course, students should be able to:

Get acquainted with the graphical user interface of AutoCAD

Understand and apply the basic 2D drawing and modify commands in AutoCAD

Apply different selection methods and tools

Understand how to manipulate 2D and 3D objects

Understand how to annotate a 2D drawing with dimensions, text etc.

Create layers and blocks

Create 3D models by applying the relevant AutoCAD functions

Acquire knowledge on how to exchange drawings and 3D models using neutral file formats

Plot and print a 2D drawing to scale

Acquire knowledge on how to prepare a 3D CAD model for rapid prototyping

Understand the basic steps required to obtain a physical model on a 3D printer



Auto CAD

COURSE SYLLABUS:



Course Name : Mechanical Engineering Group

Course Code : AE/ME/PG/PT/MH/MI/FE

Semester : Third

Subject Title : Computer Aided Drafting

Subject Code : 17016

Teaching and Examination Scheme

Teaching Scheme Examination Scheme

Teaching Scheme Examination Scheme

TH TU PR PAPER

HRS TH PR OR TW TOTAL

01 -- 04 -- -- 50# -- 25 75

Rationale:

Now a day a manual drafting is obsolete in industry. Computers being the inevitable part in an

engineers life due to its inbuilt characteristics which helps him to do various task with acceleration. Using

computers and CAD software it is easy to create and modify drawings ultimately it saves time. It also may be

useful to generate assembly and manufacturing drawings. In mechanical industry operating skills are required

for computer aided drafting operations of machine components, handling of printers & plotters. This subject is

also useful to apply concepts in 3 D modeling.

General Objectives:

Students will be able to

1) Draw, edit and modify 2D drawings.

2) Give dimensions, tolerances and geometrical tolerances.

3) Draw Isometric drawing and 3 D drawing.

4) Plot a drawing.



Topic and Content Hours

1: Introduction to Computer Aided Drafting 02 Hours

Specific Objectives:

Understand and use basics of CAD systems.

Content:

1.1 Introduction to Computer Aided Drafting (CAD)- Applications, Various Soft wares for CAD

1.2 Co-ordinate system- Cartesian & Polar-Absolute, Relative mode.

1.3 CAD initial settings commands - Snap, grid, ortho, osnap, limits, units, filters, ltscale, mbuttonpan

1.4 Object Selection methods picking, window, crossing, fence, last, previous etc.

02

2: Zoom and formatting Commands 02 Hours


View drawing.

Format drawing entities.

Content:

2.1 Zoom Commands all, previous, out, in, extent, realtime, dynamic, window, pan.

2.2 Formatting commands - Layers, block, linetype, lineweight, color.

02

3: Draw and Enquiry commands 02 Hours


Draw 2 D drawings

Measure length and area

Content:

3.1 Draw Command - Line, arc, circle, rectangle, polygon, ellipse, spline, block, hatch

3.2 Enquiry commands - distance, area

02

4: Edit and Modify commands 03 Hours


Rectify 2 D drawings.

Modify 2 D drawings

Content:

4.1 Modify Command - Erase, oops, break, trim, copy, move, mirror, offset, fillet, chamfer, array,

extend, rotate, scale, lengthen, stretch, measure, divide, explode, align.

4.2 Grips editing- Move, Copy, Stretch.

03

5: Dimensioning, Text and Plot Commands 03 Hours


Apply dimensions.

Write text or remarks.

03



Plot a drawing.

Content:

5.1 Dimensioning commands - Dimension styles, Dimensional Tolerances and Geometric Tolerances.

5.2 Text commands - dtext, mtext command.

5.3 Plotting a drawing - paper space, model space, creating table, plot commands.

6: Isometric and 3D Drawings 04 Hours


Draw and modify 3 D drawings.

Find materials mass property.

Draw isometric drawings.

Content:

6.1 3D Edit Commands -Pline, 3Dpoly, pedit, join splinedit commands.

6.2 View Commands - View ports, UCS, WCS commands

6.3 3D Object and 3D operations

3 D Object - Cube, Cylinder, Cone, Sphere, and Wedge.

3 D operations - extrude, revolve, 3Dmirror, 3Dmove, 3Dpan, 3Drotate, 3Darray, slice, sweep.

Boolean operations union, subtract, intersection. Using Isometric style option of snap

command draw isometric drawing

6.4 Shade and Enquiry commands mass property, Shade and render command.

04

TOTAL 16

List of Practicals:

1. Set the initial view.

2. Use of Draw command.

3. Use of Edit command.

4. Use of Modify command.

5. Apply dimensions.

6. Draw Isometric drawing.

7. Draw 3 D drawings.

8. Plotting of drawings on A2/A3 size sheet.



Auto CAD

Commands key board

short cuts:



Draw Tools:

SR NO. COMMAND SHORT CUT COMMENT

1. Line L Draw a line

2. Polyline PL Draw a Polyline

3. polygon POL Draw a regular polygon 3 to 1024 sides

4. Rectangle REC Draw a rectangle

5. Arc A Draw an arc between 2 intersecting lines

6. Circle C Draw a circle

7. Ellipse EL Draw an ellipse

8. Block B Opens block dialogue box in order to make a block

9. Table TB Opens insert a table dialogue box

10. Point PO Point marker

11. Hatch H Opens hatch and gradient dialogue box

12. Text MT Multi-line text

Modify Tools:


13. Erase E Erase selection

14. Copy CO Copy an object

15. Mirror MI Mirror an object

16. Offset O Offset an object by distance

17. Array AR Make multiple copies of an object

18. Move M Move an object

19. Rotate RO Rotate an object

20. Scale SC Scale an object

21. Stretch S Stretch an object

22. Lengthen LEN Lengthen or shorten a line

23. Trim TR Trim objects

24. Extend EX Extend a line to meet another



25. Break BR Break a line by defining 2 points

26. Join J Joins 2 objects to form single object

27. Chamfer CHA Chamfer between two non parallel lines

28. Fillet F Draw an arc between 2 intersecting lines

Diamension Tools :


29. Linear DLI Linear dimension

30. Align DAL Aligned linear dimension line

31. Arc length DAR Arc length dimension

32. Ordinate DOR Ordinate point dimension

33. Radius DRA Radial dimension for circles and arcs

34. Diameter DDI Diameter dimension for circles and arcs

35. Angular DAN Angular dimension line

36. Base line DBA Ordinate dimension from baseline of previous dimension

37. Continue DCO Ordinate dimension from 2nd extension line of previous

dimension

38. Distance DIST Check a distance

39. Centre DIMCENTER Creates center mark

40. Override DOV Override dimension style

Function Keys:


41. HELP F1 Opens AutoCAD help

42. TEXTSCR

GRAPHSCR F2 Switches between text screen and graphic area

43. OSNAP F3 Switches OSNAP on/off

44. ISOPLANE F5 Cycles through ISOPLANES

45. COORDS F6 Turns COORDINATE display on/off

46. GRID F7 Turns GRID on/off



47. ORTHO F8 Turns ORTHO on/off

48. SNAP F9 Turns SNAP on/off

49. POLAR F10 Turns POLAR on/off

50. OSNAP TRACK F11 Turns OBJECT SNAP TRACKING on/off

51. DYNMODE F12 Turns DYNAMIC INPUT on/off

Text Tools:


52. %%C Diameter dimensioning symbol

53. %%D Degrees symbol

54. OVERSCORE %%O Toggles overscore mode on/off

55. %%P Plus/minus symbol

56. DDEDIT ED Edit text

57. SCALETEXT SCALETEXT Scales text without moving the text insertion point

58. STYLE ST Opens text style dialogue box

59. MTEXT MT Multiline/paragraph text

60. TORIENT TORIENT Rotates text, mtext, and attribute definition objects

Three Dimensional - 3d Tools:


61. 3D 3D Command line 3D solid options

62. BOX BOX Draw a cube

63. CYLINDER CYLINDER Draw a cylinder

64. DDUCS DDUCS Opens ucs dialogue

65. EXTRUDE EXT Extrude a face

66. INTERSECT IN Intersect an object



67. REVOLVE REV Revolves an object about an axis

68. SLICE SL Slice a solid

69. SUBTRACT SU Subtract selection from solid

70. TORUS TOR Draw torus shape

71. UNION UNI Union solids

72. WEDGE WE Draw a wedge



AUTO CAD

COMMANDS HELP



1) LINE

Draw line click first point give require length TAB give require angle enter

enter.

2) RECTANGLE:

Draw rectangle click first point give require length TAB give require height enter.

3) CIRCLE:

Draw circle click center point give require radius enter.

4) COPY:

Modify copy select object to copy entre select base point select second point esc.

5) MIRROR:

Modify mirror select object to mirror entre click first point of mirror line click second point of

mirror line entre.

6) OFFSET:

Modify offset give offset distance entre select object to offset select side to offset esc

7) MOVE:

Modify move select object to move entre select base point select second point esc.

8) ROTATE:

Modify rotate select object to rotate entre select base point give angle of rotation enter.

9) SCALE:

Modify scale select object to scale entre select base point give scale factor entre.

10) TRIM:

Modify trim SPACE select line to be trim enter.

11) EXTEND:

Modify extend SPACE select line to be extend enter.



12) FILLET:

Modify fillet type R entre give fillet radius entre select first line select second line.

VARIOUS MODE SETTING:

1. Snap mode :

ON -

OFF -

2. Grid display :

ON -

OFF -

3. Ortho mode :

ON - allows only vertical & horizontal lines

OFF allows inclined lines also.

4. Polar tracking :

ON - gives track of angles set in setting of polar tracking.

OFF does not give any track.

5. Object snap :

ON - highlights snap points (control points) like end point, midpoint, center point etc.

OFF does not highlight any snap points.

6. Object snap tracking :

ON - gives track of points set in setting of object snap.

OFF - does not give any track

7. Allow/disallow dynamic UCS :

ON -

OFF -

8. Dynamic input :

ON - displays message (command help) on screen regarding command in use.

OFF does not display any message on screen.

9. Show/hide line weight :

ON - shows weight of line if applied.

OFF does not shows weight of line if applied.

10. Quick properties :

ON - shows properties of selected object.

OFF does not show properties of selected object



AUTO CAD

2D DRAWINGS

DR. BAPUJI SALUNKHE INSTITUTE OF ENGINEERING &TECHNOLOGY, KOLHAPUR

DRAWING NAME :

DRAWN BY :

DRAWING No. : SCALE :

ROLL No. :

ON DATE :

CHECKED BY : Er. Shrungare R.R. ON DATE :

NOTE

? ALL DIAMENSIONS ARE IN mm? UNSPECIFIED CHAMFERS 1x45? ANY MISSING DIAMENSION CAN BE ASSUME

67.50

45.00 67.50 33.75

225.00

22.50

SQUARE COW

45.00


DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


SQUARE COW

150.00

40.00

65.50 2 X R5.008.00

???

CLASS :

25.4038.10

76.20

95.25

120.81

DRAWING NAME :

DRAWN BY :

DRAWING No. : 3 SCALE :

ROLL No. :

ON DATE :


NOTE


CIRCLE PLATE

CLASS :

1.00 1.50 2.000.50

0.50

0.50

1.25

4.00

1.50

3.00

1.00

DR. BAPUJE SALUNKHE INSTITUE OF ENGINEERING &TECHNOLOGY,KOLHAPUR

DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


SLOTTED PLATE

CLASS :


5.000

0.8331.000

5 x

1.000

0.875

0.375

0.375 2.375 1.500

0.375 0.250

R0.125

DRAWING NAME :

DRAWN BY :

DRAWING No. :5 SCALE :

ROLL No. :

ON DATE :


NOTE


ANCHOR PLATE

CLASS :


50.000

100.000

4 x4 x

4 x

DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


OFEST PLATE

CLASS :


4 x

4 x4 x


DRAWING NAME :

DRAWN BY :

DRAWING No. :7 SCALE :

ROLL No. :

ON DATE :


NOTE


GAS KET

DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


GEAR ARM

CLASS :



DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


8.00

20.00

???

15.00

R2.50

R5.00

3.00

3.00

R1.00

4.00

4.00

R1.50

DR. BAPUJI SALUNKHE INSTITUTE OF ENGINEERING & TECHNOLOGY, KOLHAPUR

DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE

? ALL DIAMENSIONS ARE IN mm? UNSPECIFIED CHAMFERS 1x45? ANY MISSING DIAMENSION CAN BE ASSUMECLASS :


DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


DR. BAPUJI SALUNKHE INSTITUTE OF ENGINEERING& TECHNOLOGY, KOLHAPUR

DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE



DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


50.00

95.00

25.00


DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


40.00

R12.50

40.00


DRAWING NAME :

DRAWN BY :


ROLL No. :

ON DATE :


NOTE


2. Plate

Complete the drawing of theplate in Figure ME8-2. Usethe Line command and beginat point 2,2. The center of the4.50 diameter Circle isobtained by calculating thedistance starting at 2,2. (Forexample, the X value wouldbe 2 + 1 + 2.5 = 5.5 and the Yvalue would be 2+1+1.5 =4.5.) Add the additionalCircles using the samemethod. SaveAs CH8EX2-M.

CHAPTER 8 EXERCISES

1. Polylines

Use the Pline command to complete the drawing shown in Figure ME8-1. The Pline should becontinuous and the R2.00 radius is created with the Pline Arc option. SaveAs CH8EX1-M.

Chapter 8 Exercises - Mechanical EngineeringAutoCAD 2000 Instructor

Copyright 2000 The McGraw-Hill Companies. All rights reserved.

Figure ME8-1

Figure ME8-2

4. Hinge

Complete the drawing ofthe hinge in Figure ME8-4. Use whatever coordi-nate entry method youprefer. Do not includeany dimensions or text.SaveAs CH8EX4-M.

3. Hinge Bracket

Complete the drawing of the hinge bracket in Figure ME8-3. It may be helpful to draw someconstruction lines in order to position the Arcs correctly. Erase the construction lines when theArcs are complete. The outer two object lines are drawn using the OSNAP Tangent option fromthe large Circle on the right to the outer Arc on the left. SaveAs CH8EX3-M.



Figure ME8-4

Figure ME8-3

2. Spacer Plate

Complete the drawing of the Spacer Plate in Figure ME9-2A. Use the Scale command toincrease the size of the part to double the drawn size as shown in Figure ME9-2B. Use 0,0 forthe base point. SaveAs CH9EX2-M.

CHAPTER 9 EXERCISES

1. Stretch Command

Open drawing ME8EX3 from Chapter 8. Use the Stretch command to increase the length of thepart as shown in Figure ME9-1. SaveAs CH9EX1-M.



Figure ME9-1

Figure ME9-2A Figure ME9-2B

4. Tension Rod Eyelet

Complete the drawing of the tensionrod eyelet in Figure ME9-4A. SaveAsCH9EX4-M.

Use the Stretch command to decreasethe length as shown in Figure ME9-4B. (HINT: Draw the Stretch windowto cross the central section of therod.) Next, use Scale to decrease theinner shape of the head of the part asshown. (HINT: Select all four objectscomprising the inner shape. Use a base pointmidway between points A and B as indicated inFigure ME9-4A.) SaveAs CH9EX5-M.

3. Pump Gasket

Complete the drawing of the Pump Gasket in Figure ME9-3A. When complete, use the Rotatecommand to revolve the part 90 degrees as shown in Figure ME9-3B. SaveAs CH9EX3-M.



Figure ME9-3A Figure ME9-3B

Figure ME9-4A

Figure ME9-4B

2. Spur Gear

Complete the diagram of the spur gear shown in Figure ME10-3. Use the Array command withthe Polar option to create 36 teeth around the entire circle. Save the drawing as SGEAR.

CHAPTER 10 EXERCISES

1. Pulley

Draw one side of the pulley shown in Figure ME10-1. Use the Mirror command to complete theother side (see Figure ME10-2). Save the drawing as PULLEY.



Figure ME10-1 Figure ME10-2

Figure ME10-3

4. Filter

Draw the filter shown in Figure ME10-5. Use the Chamfer command to create the 45 corners onthe inner and outer rectangles. Complete the filter by using a Rectangular Array to create 7rows and 12 columns of the .28 diameter holes. Save the drawing as FILTER.

3. Ventilation Panel

Complete the drawing of the ventilation panel in Figure ME10-4. Use the Array command withthe Rectangular option to create a total of 8 rows and 5 columns. Save the drawing asVENTPNL.



Figure ME10-4

Figure ME10-5


1. Zoom, Pan

Open the R300-20.DWG drawing file supplied with AutoCAD 2000. It is normally located inthe C:/Program Files/Acad2000/Sample folder. Activate the Model tab. Next, use Zoom Extentsto display the model completely on your screen. Next use Zoom Window and select an areaaround the completed assembly (located in the lower-left corner of the drawing). Next, Zoomwith the All option, then Zoom in to the same area as before using realtime Zoom and Pan (if youhave a wheel mouse, use the wheel to accomplish this). Do not exit or save the drawing.

2. View

In this exercise, you will save the view that you generated in Exercise 1. Use the View commandto produce the Views dialog box. Select the Named Views tab, then the New button. EnterASSEMBLY as the new name and select OK.

Next, Zoom, All. Then Zoom into the spring (yellow) located near the center of the explodedview assembly. Save this view using the same method as before and assign the name SPRING.

Zoom, All once more. Using the View dialog box, restore the ASSEMBLY view and theSPRING view to ensure they are properly saved. Do not exit or save the drawing.

3. Viewres, Syswindows

With the R300-20 drawing open, also Open the SINGLE CAVITY MOLD drawing located in theSample folder. Activate the Model tab. Notice that four views have been created in this onedrawing. Zoom in to the drawing on the left. Zoom in further to display the text (red) in theupper-left corner of the drawing that says VENT TYP AS SHOWN .002. Pan slightly todisplay the fastener above the text (black and blue). Does it appear as three polygons (hexagonsor octagons) in continuous lines? Type in VIEWRES and change the value to 2000 to display thefastener as three circles with both continuous and hidden lines. Finally, use the Syswindowscommand (or Window pull-down menu) with the Tile Vertically option to display both draw-ings on the screen simultaneously. Finally, Close the R300-20 drawing but do not save changes.

4. Vports

With the SINGLE CAVITY MOLD drawing still open, maximize the drawing window withinthe AutoCAD drawing area. Make sure the Model tab is active. Next, Zoom All. Use theVports command to produce the Viewports dialog box. Select Four: Equal viewports. Double-click in the upper-left viewport and use Zoom Window to zoom in to and display only thedrawing on the far left. Use Zoom Window in the other three viewports to display the otherthree drawings, each in a different viewport. When finished, Close, but do not save thedrawing.



2. Adjusting Rod

Complete the diagram of the adjustingrod shown in Figure ME12-2. Use theCopy and Rotate commands to create thealternate position of the part. Create aseparate Layer called Phantom with theappropriate Linetype and place theselines on that layer. Save the drawing asCH12EX2-M.


1. Packing Gland

Complete the drawingshown in Figure ME12-1.Create separate Layers forthe center and hidden lines.Set the Ltscale to an appro-priate value for thedrawing. Save the drawingas CH12EX1-M.



Figure ME12-1

Figure ME12-2

4. Linetype Applications

Complete the diagram in Figure ME12-4. Create separate Layers for the different Linetypes(object lines, center lines, phantom lines, etc.). Set the Ltscale to an appropriate value for thedrawing. Set aLineweight of.40mm or 0.016for all layersexcept the centerlines, hidden lines,and chain line.Toggle the LWTbutton on theStatus bar toensure thelineweights appearin the drawing.Estimate alldimensions whichare not given. Donot create thedimensions or textin your drawing.Save the drawingas CH12EX4-M.

3. Gasket

Complete the drawing of the gasketshown in Figure ME12-3. Create sepa-rate Layers for the different Linetypes(object lines and the center lines) but donot draw the dimensions. Set the Ltscaleto an appropriate value for a metricdrawing. Set the object line layer to aLineweight of .40mm or 0.016. Togglethe LWT button on the Status bar toensure the lineweights appear in thedrawing. Save the drawing asCH12EX3-M.



Figure ME12-4

Figure ME12-3


1. Metric Drawing Setup

Create a template drawing for use in metric drawings to be plotted at a scale of 1 to 1. Begin aNew drawing and Start from Scratch; use the Metric default settings. Next, follow the stepslisted below.

A. Set Units to Engineering and Precision to 0. B. Set Limits for a B-size sheet (11x17). To convert from inches to millimeters multiply by 25.4

to achieve Limits of 431.8,279.4, then Zoom All.C. Set Grid and Grid Snap to 10.D. Load the Center2, Hidden2, and Phantom2 Linetypes.E. Create the following Layers and change their Color, Linetype, and Lineweight as indicated.

OBJECT continuous red 0.40mmCENTER center yellow DefaultPHANTOM phantom blue DefaultHIDDEN hidden magenta Default

F. Save the drawing as METRIC-B.

2. Mechanical Engineering Drawing Setup Using the Quick SetupWizard

Create a template for a drawing to be plotted on C-size paper at a scale of 3/4 = 1. Use theQuick Setup Wizard to assist with the following setup. (Make sure the new drawing is based onthe template ACAD.DWT.)

A. In the Units section select Decimal.B. In the Area section specify 29.3 and 22.7, then select the Finish button.C. Zoom All.D. Set Grid Snap to .25.E. Set Ltscale to 1.33.F. Load the Center2, Hidden2, and Phantom2 Linetypes.G. Create the following Layers and assign the Color, Linetype, and Lineweight as indicated.

OBJECT continuous red 0.016CENTER center yellow DefaultPHANTOM phantom blue DefaultHIDDEN hidden magenta Default

H. Save the drawing as MECH3-4 -C.

3. Architectural Drawing Setup

Create a template for an architectural drawing to be plotted on B-size paper at a scale of 1/4 =1. Use Start from Scratch, with the English default settings. Continue using the followingsetup.



A. Set the Units to Architectural. B. Set the Limits to 72,48, then Zoom All.C. Set Grid to 12 and Grid Snap to 12.D. Set Ltscale to 48.E. Load the Center2, Hidden2, and Phantom2 Linetypes.F. Create the following Layers and assign the Color, Linetype, and Lineweight as indicated.


G. Save the drawing as ARCH1-4-B.

4. Civil Engineering Drawing Setup Using the Advanced Drawing Setup Wizard

Create a template drawing using the Advanced Drawing Setup Wizard. The template is for a1=20 drawing using feet and decimal feet on an engineering D-size sheet.

A. In the Units section select Architectural.B. Accept all the defaults for angular settings by selecting the Finish button.C. In the Area section specify units of 680 and 440, then select Finish.D. Zoom All.E. Set Grid to 20 and Grid Snap to 1.F. Load the Center2, Hidden2, and Phantom2 Linetypes.G. Set Ltscale to 240.H. Create the following Layers and change their Color, Linetype, and Lineweight as indicated.


I. Save the drawing as CIVIL20-D.



3. Bill of Materials

Complete the table in Figure ME15-3 to beused as a bill of materials. Draw the bottomLine as dimensioned. Use the Divide andMeasure commands to find the necessarypoints. Create Offsets Through the Pointsusing Node OSNAP. Save the drawing asBOM.

2. Machine Screw

Draw the machine screw shown in Figure ME15-2. Since this is aschematic thread representation,you can estimate the thread pitch(distance between two crests or two roots). Save the drawing asCH15EX2-M.


1. Printed Circuit

Complete the printed circuit board in FigureME15-1. Use Donut with an inside diameter of .1and an outside diameter of .2 to create the pads.Use Pline with a width of .12 to complete thetraces. Use a .25 Grid and Grid Snap to place allpads (Donuts) on a point. Save the drawing asCH15EX1-M.



Figure ME15-1

Figure ME15-2

Figure ME15-3

Using the Subtractcommand, select the Circleat the select solids andregions to subtract fromprompt. Select each of theteeth at the select solidsand regions to subtractprompt, then press Enter.Your drawing should looklike that in Figure ME15-4B.Save the drawing asCH15EX4-M.

4. Gear

Complete the diagram of thegear in Figure ME15-4A.Use the Polar option of theArray command to copy androtate one tooth (Ellipse)around the Circle 20 times.Use the Region command toconvert the teeth and Circleto regions.



Figure ME15-4A

Figure ME15-4B

2. Plate

Open the CH8EX2 drawing from Chapter 8exercises. Draw Lines on the current layer torepresent the center lines shown in FigureME16-2. Next create an appropriate Layerand Linetype for center lines and useProperties to place the lines on the properlayer. Save the drawing as CH16EX2-M.


1. Flanged Sleeve

Complete the flanged sleeve shown inFigure ME16-1. Create Layers for each ofthe separate line types. Assign appropri-ate Lineweights to the layers as shown inthe figure. Use the Properties window tomove all continuous lines to a Layercalled Geometry. Save the drawing asCH16EX1-M.



Figure ME16-1

Figure ME16-2

4. Displacement Diagram

Draw the cam displacement diagram as shown in Figure ME16-4. First, draw one horizontalLine and use the Divide command to help lay out 13 equally spaced vertical lines. Draw half ofa Circle at the left-most vertical line and Array the vertical line 7 times to fill 180 degrees.Construct the respective horizontal projection lines from the ends of the radial lines. Place aDonut at each line intersection, then use the Spline command to draw the cam profile. Trim asnecessary. Save the drawing as CH16EX4-M.

3. Cam Plate

Draw the cam plate shown inFigure ME16-3 using Lines andArcs or Circles. When finished,use the Pedit command andconvert the existing Lines andArc to Plines with a Width of .1.Add the necessary center andhidden lines. Save the drawingas CH16EX3-M.



Figure ME16-3

Figure ME16-4


1. Lever

Complete the lever drawing in Figure ME17-1. Begin the drawing by locating the center of the1.00 diameter Circle at absolute coordinates of 2.25, 4.00. Use the Dist, Id, and Properties com-mands to answer the following questions. Save the drawing as CH17EX1-M.

A. What is the Distance from the center of the 1.00 diameter circle A to the intersection ofthe circle and the vertical center line at B?

B. What is the absolute coordinate value of the center of the 4.50 radius (arc C)?

C. What is the total length of arc C?



Figure ME17-1

3. Dblist

Open CH17EX1-M from exercise 1. Use Dblist to obtain a listing of all entities in the drawing.Select Edit from the AutoCAD Text Window, then select Copy History. Open the WindowsNotepad and select Paste from the Edit menu. The Dblist from the current drawing can now besaved as a text file or printed.

4. Time

Using the Time command, what is the total amount of editing time you spent with theCH17EX1-M drawing? How much time have you spent in this session? How much time untilthe next automatic save?

Chapter 17 Answers

1. Lever

A. Distance = 6.8474B. Absolute Coordinate Value, Delta X = 6.6200, Delta Y = -1.7500C. Total Arc Length is 5.3595

2. Shaft Set

Total Area = 15.2793

2. Shaft Set

Draw the shaft setshown in Figure ME17-2.Find the total Area withthe 3.00 diameter Circleremoved. Save thedrawing as CH17EX2-M.



Figure ME17-2

2. Flange

Begin a New drawingand create the Flangeusing the dimensionsshown in FigureME19-2. Create thecenter lines on a sepa-rate layer but do notcreate the dimensions.Next, create a newlayout using theLayout commandwith the Templateoption and select theANSI B ColorDependent PlotStyles.dwt with theANSI B Titleblock.Switch to the newlayout and set the viewport scale to 1.5 to achieve a drawing similar to that shown in FigureME19-2. Save the drawing and assign the name CH19EX2-M.


1. Packing Gland

Open the drawing entitledCH18EX4-M from theChapter 18 Exercises.Activate a layout. UsingPagesetup, ensure that thePlot Device and Paper Sizeare set correctly for thedevice you will use to printor plot. If no viewportexists in the layout, create alayer named VIEWPORTS,then use the Vportscommand to make oneviewport on the new layer.Use the Viewports toolbarand select an appropriateviewport scale from thedrop-down list to achieve aprint similar to that shownin Figure ME19-1. SaveasCH19EX1-M.



Figure ME19-1

Figure ME19-2

3. Multiple Viewports

Open the drawing you created inChapter 10 Exercises namedVENTPNL. Create a new layoutusing the Layout command withthe Template option and select theANSI A Color Dependent PlotStyles.dwt with the ANSI ATitleblock. Activate the newlayout and Erase the viewport thatexists (it is the same size andshape as the inside border of thetitleblock). Create two viewportsas shown in Figure ME19-3. Setthe viewport scale for the mainview at 1:2 and for the detail at1:1. Label the two views and indi-cate the scale with Text. Save thedrawing as CH19EX3-M.



Figure ME19-3

4. Multiple Layouts

Open the Flange drawing youcreated previously namedCH19EX2-M. Create a secondnew layout using the ANSI AColor Dependent PlotStyles.dwt. Switch to the newlayout and set the viewport scaleto .75. Next, use the LayerProperties Manager to freeze thecenter line layer in the ActiveViewport Freeze column (makesure your cursor is inside theviewport before you change thelayer setting). Check the other(ANSI B) layout to verify the layersetting affected only the viewportin the ANSI A layout. Your newlayout should look similar to thatshown in Figure ME19-4. Save thedrawing and assign the name CH19EX4-M.

Figure ME19-4

2. Shaft

Draw Shaft A as shown in Figure ME23-2. Copy the shaft and use Grips to resize the new shaftto the dimensions as shown in Shaft B. Save the drawing as CH23EX2-M.


1. Plate

Draw the steel plate according to the dimensions shown in Figure ME23-1, Plate A. Copy theplate so that there are two identical figures. Use the Stretch and Move modes of Grips to resizeand relocate the holes and the plate perimeter as shown in Plate B. Save the drawing asCH23EX1-M.



Figure ME23-1

Figure ME23-2

4. Hub (Part 2)

Open CH23EX3-M and use Grips tomake the modifications shown inFigure ME23-4. SaveAs CH23EX4-M.

3. Hub (Part 1)

Complete the drawing of thehub as shown in FigureME23-3. Use Rotate with theCopy option of Grips tocreate the 45 angle centerlines and to array the holes.Save the drawing asCH23EX3-M.



Figure ME23-3

Figure ME23-4



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