Siemens SINUMERIK 810D - Page 484

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Appendix 03.04
B Terms
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Ó Siemens AG, 2004. All rights reserved
A-484 SINUMERIK 840D/840Di/810D Operator’s Guide HMI Advanced (BAD) – 03.04 Edition
Limit speed
Minimum/maximum (spindle) speed: The maximum speed of a spindle
can be limited by values defined in the machine data, the -> PLC or ->
setting data.
Linear axis
The linear axis is an axis which, in contrast to a rotary axis, describes
a straight line.
Linear interpolation
The tool travels along a straight line to the destination point while
machining the workpiece.
Load memory
On the CPU 314 of the -> PLC, the load memory is identical with the
-> working memory.
Look Ahead The Look Ahead function is a means of optimizing the machining
velocity by looking ahead over a parameterizable number of
traversing blocks.
Look Ahead for contour
violations
The control detects and reports the following types of collision:
1. Path is shorter than tool radius.
2. Width of inside corner is less than the tool diameter.
M
Machine
Control operating area
Machine axes
Axes which exist physically on the machine tool.
Machine control panel
An operator panel on a machine tool with operating elements such as
keys, rotary switches, etc. and simple indicators such as LEDs. It is
used for direct control of the machine tool via the PLC.
Machine coordinate
system
System of coordinates based on the axes of the machine tool.
Machine zero
A fixed point on the machine tool which can be referenced by all
(derived) measurement systems.
Machining channel
A channel structure makes it possible to reduce downtimes by
allowing sequences of motions to be executed in parallel. For
example, a loading gantry can execute its movements during a
machining operation. In this case, a CNC channel ranks as an
autonomous CNC control complete with decoding, block preparation
and interpolation.