HEIDENHAIN TNC 640 - Page 680

Turning | Basic functions (option 50)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Defining the speed:
Show the soft-key row with special functions
Press the TURNING PROGRAM FUNCTIONS soft
key
Press the FUNCTION TURNDATA soft key
Press the TURNDATA SPIN soft key.
Select the function for speed entry: Press the
VCONST: soft key
Cycle 800 limits maximum speed with eccentric turning.
The control restores a programmed limitation of the
spindle speed after eccentric turning.
To reset the speed limitation, program FUNCTION
TURNDATA SPIN SMAX0.
If the maximum speed is achieved the control displays
SMAX instead of S in the status display.
Example
3 FUNCTION TURNDATA SPIN VCONST:ON VC:100
GEARRANGE:2
Definition of a constant cutting speed in gear range 2
3 FUNCTION TURNDATA SPIN VCONST:OFF S550
Definition of a constant spindle speed
...