Industrial Millwrights Terminology

8/2/2019 Industrial Millwrights Terminology

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MillwrightTerminology

Indust r ia l

Mechan ics /

M i l lw r igh ts


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Acknowledgments

Winnipeg Technical College and the Department of Labour and Immigration of Manitoba

wish to express sincere appreciation to all contributors.

Special acknowledgments are extended to the following individuals:

Manola Barlow, Independent Contractor

Sarah McDowell, Independent Contractor

Recognition of Prior Learning Coordinator, Winnipeg Technical College

Martin Malloy, Industrial Mechanics/Millwright Instructor, Winnipeg Technical

College

Dan Zvanovec, Industrial Mechanics/Millwright Instructor, Winnipeg TechnicalCollege

Dain Lanouette, Industrial Mechanics/Millwright Instructor, Winnipeg TechnicalCollege

Funding for this project has been provided by The Citizenship and Multicultural Division,

Manitoba Department of Labour and Immigration

Disclaimer

Statements and opinions in this document do not reflect those of Winnipeg Technical

College or the project funder, Citizenship and Multicultural Division, Manitoba

Department of Labour and Immigration. The information is gathered from a variety of

sources and is current and accurate as of the revision date noted. This information is

subject to change and will not be further updated. It is the responsibility of the reader to

seek current statistics and information.

Please contact the Winnipeg TechnicalCollege at 989-6500 or www.wtc.mb.ca if you havequestions about the contents of this document


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Table of Contents

Introduction -------------------------------------------------------------------------------- 4

Industrial Mechanics/Millwrights Trade: Definitions of Terms----------------- 5

Industrial Mechanics/Millwrights: Crossword-------------------------------------12

Industrial Mechanics/Millwrights: Matching---------------------------------------13

Answer Key-------------------------------------------------------------------------------14

References -------------------------------------------------------------------------------14


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Introduction

To become a skilled industrial mechanic/millwright, you first need to learn the technical

vocabulary (language) of industrial mechanics/millwright. The sections in this booklet

introduce you to some of the basic terms of the industrial mechanic/millwright language.

Once you understand the language of industrial mechanics/millwright, you will be

prepared to interpret and communicate information accurately.

This guide mainly focuses on some of the essential terms for industrial

mechanics/millwright. There are four crosswords and matching activities in this

package. Answer keys are found at the back of the package. Crosswords and matching

activities are meant to be completed after you have studied the corresponding unit. Afteryou feel you have understood the material you have read, you can then test yourself. If

you are scoring below 80% on the self-tests, it is recommended that you go back and

review those areas.


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Industrial Mechanics/Millwrights Trade: Definitions of

Terms

Additive- A chemical compound added to a fluid tochange its properties.

Air Compressor- A device that takes air from the

atmosphere and compresses it to increase its pressure.

Ambient Temperature- The temperature of the air surrounding a piece of equipment.

Authorized Individual- A knowledgeable individual to whom the authority and

responsibility to perform a specific assignment has been given.

Backlash- The play between mating gear teeth.

Ball Bearing- An anti-friction bearing that permits free motion

between a moving part and a fixed part by means of balls

confined between inner and outer rings.

Centre of Gravity- The balancing point of a load.

Centrifugal Force- The outward force produced by a rotating object.

Circuit- A closed path through which hydraulic fluid flows.

Circumference- The boundary of a circle.

CMTS- Cable Modem Termination System describes a component that exchanges

digital signals with cable modems on a cable network. A cable modem termination

system is located at the local office of a cable television company.

Coax- Coaxial cable is copper-cored cable surrounded by a heavy shielding that is

used to connect computers in a network. Either thin or thick coax can be used.


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Connecting Link- A three-part chain attachment used to assemble and

connect the master link to a chain.

Corrosion- The action or process of eating or wearing away gradually by chemical

action.

Coupling- A device that connects the ends of rotating shafts.

Cubic Foot- Contains 1,728 cubic inches (cu in) (12 x 12 x

12 = 1728 cu in.)

Directional Control Valve- A valve whose primary function is

to direct or prevent flow through selected passages.

Displacement- 1. The volume of oil moved during each cycle

of a pump. 2. The measurement of the distance (amplitude) an

object is vibrating.

Efficiency- A measure of a components or systems useful

output energy compared to its input energy.

End Play- The total amount of axial movement of a shaft.

Energy- A measure of the ability to do work.

Extension Ladder- An adjustable-height ladder with a fixed

bed section and sliding, lockable fly sections.

Ferrous Metals- Metals containing iron.

Flow Control Valve- A valve whose primary function is to regulate the rate of fluid flow.

Gasket- A seal used between machined parts or around pipe joints to prevent the

escape of fluids.


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Gear Pump- A pump consisting of two meshing gears enclosed in a close-

fitting housing.

Guardrail- A rail secured to uprights and erected along the

exposed sides and ends of a platform.

Hazardous Location- A location where there is an

increased risk of fire or explosion due to the pressure of

flammable gases, vapours, liquids, combustible dusts, or easily ignitable fibres or

flyings.

Hoist Chain- The chain that raises a load.

Horizontal Line- A line that is parallel to the horizon.

Hydraulics- The branch of science that deals with the practical

application of water or other liquids at rest or in motion.

Idler Gear- A gear that transfers motion and direction in a gear

train, but does not change speeds.

Kinetic Energy- The energy of motion.

Knotting- Fastening a part of a rope to another part of the same rope by interlacing it

and drawing it tight.

Lanyard- A rope or webbing device used to attach a workers

harness to a lifeline.

LimitSwitch- A device that cuts off the power automatically at

or near the upper limit of hoist travel.

Lockout- The process of preventing the flow of energy from a

power source to a piece of equipment.


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Logic- The science of correct reasoning.

Lubrication- The process of maintaining a fluid film between solid surfaces to prevent

their physical contact.

Machine- A group of mechanical devices that transfer force, motion or energy input at

one device into a force, motion or energy output at another device.

Mechanical Advantage- The ratio of the output force of a device to the input force.

Overhead Crane- A crane that is mounted between

overhead runways.

Parallel Lines- Two or more lines that remain the same

distance apart.

Pictorial Diagram- A diagram that uses drawings or

pictures to show the relationship of each component in a

circuit.

Piston Pump- A pump in which fluid flow is produced by

reciprocating pistons.

Platform- A landing surface that provides access or rest from a fixed ladder.

Pneumatics- The branch of science that deals with the transmission of energy using

gas.

Polarity- The positive (+) or negative (-) state of an object.

Potential Energy- Stored energy a body has due to its position, chemical state or

condition.

Pressure- The force per unit area.


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Pressure Gauge- A device that measures the intensity of a force applied to a

fluid.

Ratchet- A mechanism that consists of a toothed wheel and a spring-

loaded pawl.

Ratio- The relationship between two quantities or terms, e.g., 1:3.

Rectangle- A quadrilateral with equal opposite sides and four 90 angles.

Reservoir- A container for storing fluid in a hydraulic system.

Resistance- The opposition to electron flow.

Rigging- Securing equipment or machinery in preparation for lifting by means of rope,

chain or webbing.

Rounding Off- The process of increasing or decreasing a

number to the nearest acceptable number, e.g., 44 rounded off =

45.

Rust: - A form of oxidation in which metal oxides are chemically

combined with water to form a reddish-brown scale on metal.

Scaffold- A temporary or movable platform and structure for workers to stand on when

working at a height above the floor.

Semicircle- One-half of a circle containing 180.

Sequence- The order of a series of operations ormovements.

Service Life- The length of service received from a bearing.

Spur Gear- A gear that has straight teeth that are parallel to the shaft axes.


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Standard- A guideline adopted by regulating authorities.

Steel Alloy- Metallic material formulated from the fusing or combining of two or more

metals.

Strainer- A fine metal screen that blocks contaminant particles.

Symbol- A graphic element that indicates a particular device, etc.

Tensile Strength- A measure of the greatest amount of straight-pull metal can bear

without tearing apart.

Torque- The twisting (rotational) force of a shaft.

Troubleshooting- The systemic elimination of the various parts of a system, circuit or

process to locate a malfunctioning part.

Tube- A thin-walled, seamless or seamed, hollow cylinder.

Union- A fitting used to connect or disconnect two tubes that cannot be turned.

Vacuum- A pressure lower than atmospheric pressure.

Valve- A device that controls the pressure, direction or rate of

fluid flow.

Variable Displacement Pump- A pump in which the

displacement per cycle can be varied.

V-Belt- An endless power transmission belt with a trapezoidal

cross-section.

Velocity- The distance a fluid travels in a specified time.


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Vibration- The continuous periodic change in displacement with respect to a

fixed reference.

Volume- The three-dimensional size of an object measured in cubic units.


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Industrial Mechanics/Millwrights: Crossword

Across

3. A device that connects the ends of rotatingshafts

7. A type of metals that contains iron

8. The boundary of a circle

9. A measure of the ability to do work

10. A chemical compound added to a fluid tochange its properties

11. The volume of oil moved during each cycleof a pump

Down

1. A closed path through which hydraulic fluidflows

2. A rail secured to uprights and erectedalong the exposed sides and ends of aplatform

4. A seal used between machined parts oraround pipe joints to prevent the escape offluids

5. The play between mating gear teeth

6. A measure of a component's or system'suseful output energy

8. The action or process of eating or wearingaway gradually by chemical action


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Industrial Mechanics/Millwrights: Matching

1. The branch of science that deals with the practical applicationof water or other liquids at rest or at motion is known as

_______________.

2. The energy of motion is known as _____ energy.

3. A device that cuts off the power automatically at or near theupper limit of hoist travel is a __________.

4. _______________ is defined as the ratio of the output forceof a device to the input force.

5. A gear that transfers motion and direction in a gear train, butdoes not change speeds is a _______ gear.

6. A ___________ diagram uses drawings or pictures to showthe relationship of each component in a circuit.

7. A device that measures the intensity of a force applied to afluid is called a ______________.

8. Stored energy a body has due to its position, chemical stateor condition is called ______ energy.

9. The process of preventing the flow of energy from a powersource to a piece of equipment is called a

____________________.

10. A ___________ is a mechanism that consists of a toothedwheel and a spring-loaded pawl.

11. The branch of science that deals with the transmission ofenergy using gas is known as ____________.

12. The positive or negative state of an object is referred to as its____________.

13. A group of mechanical devices that transfer force, motion orenergy input at one device into a force, motion or energyoutput at another device is more commonly referred to as a

__________.

14. A __________ is a rope or webbing device used to attach aworkers harness to a lifeline.

A. Idler

B. Hydraulics

C. Lockout

D. Potential

E. Polarity

F. Pressure Gauge

G. Machine

H. Limit Switch

I. LanyardJ. Kinetic

K. Ratchet

L. Pictorial

M. Mechanical

Advantage

N. Pneumatics


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Answer Key

Industrial Mechanics/Millwrights: Crossword (page 12)

Across: 3. Coupling 7. Ferrous 8. Circumference 9. Energy 10. Additive

11. Displacement

Down: 1. Circuit 2. Guardrail 4. Gasket 5. Backlash 6. Efficiency 8. Corrosion

Industrial Mechanics/Millwrights: Matching (page 13)

1. B

2. J

3. H

4. N

5. A

6. L

7. F

8. D

9. C

10. K

11. N

12. E

13. G

14. I

References

Millwright Manual, 2nd ed. Victoria: Province of British Columbia, Ministry of Labour,

Apprenticeship Branch. 1996.

Updated: April 2008

Documents

Industrial Millwrights Terminology