Multiple-Axis Machining | Miscellaneous functions for rotary axes
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HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
Inclined machining with noncontrolled rotary axes
If your machine has non-controlled rotary axes (so-called counter
axes), then you can also perform inclined machining operations
with these axes in combination with M128.
1
Manually traverse the rotary axes to the desired positions. M128
must not be active during this operation
2
Activate M128: The control reads the actual values of all existing
rotary axes, calculates from this the new position of the tool
center point, and updates the position display
3 The control performs the necessary compensating movement in
the next positioning block
4 Carry out the machining operation
5
At the end of the program, cancel M128 with M129, and return
the rotary axes to their initial positions
Proceed as follows:
As long as M128 is active, the control monitors the
actual positions of the non-controlled rotary axes. If
the actual position deviates from the nominal position
by a value greater than that defined by the machine
tool builder, the control outputs an error message and
interrupts program run.
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