Siemens SINUMERIK 828D Turning, Руководство по эксплуатации функций

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Glossary
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Dynamic feedforward control
Inaccuracies in the → contour due to following errors can be practically eliminated using dynamic, acceleration-
dependent feedforward control. This results in excellent machining accuracy even at high → path velocities.
Feedforward control can be selected and deselected on an axis-specific basis via the → part program.
Editor
The editor makes it possible to create, edit, extend, join, and import programs/texts/program blocks.
Exact stop
When an exact stop statement is programmed, the position specified in a block is approached exactly and, if
necessary, very slowly. To reduce the approach time, → exact stop limits are defined for rapid traverse and feed.
Exact stop limit
When all path axes reach their exact stop limits, the control responds as if it had reached its precise destination
point. A block advance of the → part program occurs.
External zero offset
Zero offset specified by the → PLC.
Fast retraction from contour
When an interrupt occurs, a motion can be initiated via the CNC machining program, enabling the tool to be
quickly retracted from the workpiece contour that is currently being machined. The retraction angle and the
distance retracted can also be parameterized. After fast retraction, an interrupt routine can also be executed
(SINUMERIK 840D).
Feed override
The programmed velocity is overriden by the current velocity setting made via the → machine control panel or
from the → PLC (0 to 200%). The feedrate can also be corrected by a programmable percentage factor (1-
200%) in the machining program.
Finished-part contour
Contour of the finished workpiece. See → Raw part.
Fixed machine point
Point that is uniquely defined by the machine tool, e.g. machine reference point.