3
Preparatory Functions for Machining 08.02
3.8 Tool
3
© Siemens AG, 2002. All rights reserved
3-56 SINUMERIK 840D/810D Operator's Guide ManualTurn (BAM) – 08.02 Edition
The "Alternat." soft key sets 9 tool point directions depending on the
machining direction for the tool (also applies to mushroom):
X
P
X
Cutting edge
position
Cutting edge
position
Selection
symbol
Selection
symbol
P=S
Z
Z
12 3
4
56
7
8
9
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).
Constant cutting rate
If the machine manufacturer has included the feature, you can also
assign a constant cutting rate v
const
in m/min to each tool with the
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.
Calculate
v=const
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.
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