Siemens SINUMERIK 840DE Operation & Programming Manual page 56

3
Preparatory Functions for Machining
3.8 Tool
Constant cutting rate
Calculate
v=const
3-56
The "Alternat." soft key sets 9 tool point directions depending on the
machining direction for the tool (also applies to mushroom):
Cutting edge
1
position
X
Selection
symbol
Cutting edge
5
position
X
Selection
symbol
The specifications length X and length Z refer to point P with cutting
edge positions 1-8; but with 9 to S (S = P).
The tool point direction 9 is not supported by ManualTurn cycles, but
can be used in programs that were externally generated (G-code
programs).
If the machine manufacturer has included the feature, you can also
assign a constant cutting rate v
selection S(T) which you can then call in each machining step with
selection S(T) as an alternative to the spindle speed.
Either enter the value for constant cutting rate in the table.
Or press the "Calculate v=const" soft key while the spindle is rotating.
ManualTurn then calculates the constant cutting rate for the selected
tool from the current speed velocity and automatically transfers the
value to the table.
You can enter offset data for other tools if necessary.
Offset data can be input provided that no start command has been
given. Offset data can be overwritten.
2 3
P
6 8
7
in m/min to each tool with the
const
© Siemens AG, 2002. All rights reserved
SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
3
08.02
4
Z
9
P=S
Z