2.6.3 Constant cutting rate (G96/G961/G962, G97/G971/G972, G973, LIMS, SCC)
If the "Constant cutting speed" function is active, the spindle speed is modified as a function of
the respective workpiece diameter so that the cutting speed S in m/min or ft/min remains
constant at the tool edge.
① Constant cutting rate
② Increased spindle speed
③ Reduced spindle speed
This results in the following advantages:
● Uniformity and consequently improved surface quality of turned parts
● Machining with less wear on tools
Syntax
Activating/deactivating constant cutting speed for the master spindle:
G96/G961/G962 S...
...
G97/G971/G972/G973
Speed limitation for the master spindle:
LIMS=<value>
LIMS[<spindle>]=<value>
Other reference axis for G96/G961/G962:
SCC[<axis>]
Note
SCC[<Axis>] can be programmed together with G96/G961/G962 or separately.
Fundamentals
2.6 Spindle motion
NC programming
98 Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
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