| Absolute
Move |
Movement
measured from Zero position (See Incremental) |
| AMT |
Advanced
Manufacturing Technology |
| Axis/Axes |
The
Computer Controlled Slides of the machine usually linear or circular.
Assigned X Y Z etc |
| Ball
Screw |
Recirculating
Ball Screw (CNC leadscrew with ball bearing nut) |
| CAD |
Computer
Aided Design |
| CAM |
Computer
Aided Manufacturing |
| CIM |
Computer
Integrated Manufacturing |
| Closed
Loop |
Checks
that the machine has or has not obeyed the computer command {See Open
Loop & Feedback} |
| CNC |
Computer
Numerical Control |
| Coolant |
A
substance, often a mixture of Oil and Water, applied at to cutting
action to improve cutting properties, extend tool life, improve surface
finish , keep the cutting area cool. |
| CSS |
Constant
Surface Speed (Gives optimum cutting speed on changing diameters/tapers
etc; Spindle RPM increases/ decreases. |
| Dedicated
Control |
Control
System built into Machine Tool |
| DXF |
Data/Design/Drawing
Interchange Format |
| Feedback |
Same
as Closed Loop |
| FMS |
Flexible
Manufacturing System |
| G
& M Codes |
CNC
Programming (Machine Operation) |
| Incremental
Move |
Movement
measured from CURRENT position (See Absolute) |
| ISO |
International
Standards Organisation |
| MDI |
Manual
Data Input. |
| Open
Loop |
NO
check that the machine has obeyed computer Command (See Closed Loop
& Feedback) |
| Post
Processor |
CAD
to CAM link; a piece of software that translates drawings into cutting
routines i.e. G & M codes |
| Resolution |
Smallest
Movement that the machine slides can make. |
| RPM |
Revolutions
Per Minute |
| Semi
Closed Loop |
Only
counts motor revolutions and not slide movement |
| Slant
Bed |
CNC
Lathe design for mounting cutting tools. |
Suggested CNC Reference Book; An Introduction to CNC Machining; David
Gibbs ISBN 0 304 31412 9 |
