Machinist Terminology
Glossary
- Block A Occupational Skills
- repetitive general skills for many tasks performed by a machinist that are common to several machine tool applications
- Block B Bench Work
- all the activities performed using hand tools at a bench such as sawing, reaming, tapping, assembly and disassembly
- Block C Drill Presses
- all the activities performed on a drill press
- Block D Lathes
- all the activities performed on a lathe
- Block E Mills
- all the activities performed on a mill
- Block F Saws
- all the activities performed on a power saw
- Block G Grinders
- all the activities performed on a grinder
- Block H Computer Numerical Control (CNC) Machines
- all the activities performed with a CNC machine
- boring
- a machining process that produces a round straight hole using a single point tool
- chamfer
- usually a 45 degree angle machined on the start of a bore or a shaft to allow for ease of assembly
- computer numerical control (CNC)
- the control of a machine tool using coded instructions from a programmer or an operator
- counterbore
- enlarging the end of a previously created hole
- countersink
- creating a tapered hole on the end of an existing hole to accommodate a tapered head screw
- drill press
- a machine used to produce holes in workpieces; reaming, tapping, spot facing and countersinking can also be performed on drill presses
- grinder
- a machine that removes material from workpieces using abrasive wheels
- heat treatment
- the heating and cooling of metals to modify their mechanical properties
- knurling
- using a tool to produce a pattern on the diameter of a workpiece in a lathe
- lathe
- a machine that holds and rotates the workpiece; a cutting tool is moved on slideways to cut cylindrical, tapered or threaded features on a workpiece
- Machinery’s Handbook
- a reference book used by the mechanical engineering disciplines such as engineers, toolmakers and machinists
- mill
- a machine that holds the workpiece while a rotating cutter with single or multiple cutting edges cut surfaces and contours
- saw
- a machine commonly used to cut off workpieces from bar stock using a multi-tooth blade
- spot facing
- a machining operation that creates a flat surface at 90° to a hole
- tapping
- cutting threads within a hole using a cutting tool called a tap
- traverse grinding
- grinding using an automatic feed
- trepanning
- cutting a groove in the form of a circle or boring or cutting a hole by removing the center or core in one piece
Abbreviations
- ANSI
- American National Standards Institute
- ASME
- American Society of Mechanical Engineering
- CBN
- cubic boron nitride
- CNC
- computer numerical control
- G Codes
- preparatory command
- M Codes
- miscellaneous function command
- S Codes
- spindle speed control
- NPS
- National Pipe Straight
- NPT
- National Pipe Taper
- WHMIS
- Workplace Hazardous Materials Information System
- UNC
- Unified National Course (a thread system for course threads)
- UNF
- Unified National Fine (a thread system for fine threads)
- CMM
- coordinate measuring machine
- EDM
- electrical discharge machine
- HSS
- high speed steel
- NDT
- non-destructive testing
- PPE
- personal protective equipment
Provided by the Interprovincial Standards Red Seal Program National Occupational Analysis (NOA)
http://www.red-seal.ca
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