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Siemens SINUMERIK 840D Operator's Manual Page 344

Computerized numerical control system for machine tools.
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A
Appendix
B
Terms
Velocity control
Vocabulary words
W
Working area
Working area limitation
Working memory
Workpiece
Workpiece contour
Workpiece coordinate
system
Workpiece zero
X
Y
A-344
In order to be able to achieve an acceptable traversing velocity on
very short traverse movements within a single block, predictive
velocity control can be set over several blocks (-> look ahead).
Words with a specific notation, which have a defined meaning in the
programming language for -> parts programs.
Three-dimensional zone into which the tool tip can be moved on
account of the physical design of the machine tool.
See also -> protection zone.
With the aid of the working area limitation, the traversing range of the
axes can be further restricted in addition to the limit switches. One
value pair per axis may be used to describe the protected working
area.
The working area is a RAM area in the -> CPU which is accessed by
the processor to access the user program during program execution.
Part to be created/machined by the machine tool. A workpiece is
saved as a separate program in a directory.
Setpoint contour of the -> workpiece to be created/machined.
The starting position of the workpiece coordinate system is the ->
workpiece zero. In machining operations programmed in the
workpiece coordinate system, the dimensions and directions refer to
this system.
The workpiece zero is the starting point for the -> workpiece
coordinate system. It is defined in terms of the distance from the
machine zero.
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
A
03.04
 Siemens AG, 2004. All rights reserved

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