HEIDENHAIN TNC 128 (77184x-02) - Manual (Page 401)

BORING (Cycle 202) 16.5
16
TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014
401
16.5 BORING (Cycle 202)
Cycle run
1 The TNC positions the tool in the tool axis at rapid traverse
FMAX to set-up clearance above the workpiece surface.
2 The tool drills to the programmed depth at the feed rate for
plunging.
3 If programmed, the tool remains at the hole bottom for the
entered dwell time with active spindle rotation for cutting free.
4 The TNC then orients the spindle to the position that is defined
in parameter Q336.
5 If retraction is selected, the tool retracts in the programmed
direction by 0.2 mm (fixed value).
6 The tool then retracts to set-up clearance at the retraction rate,
and from there—if programmed—to the 2nd set-up clearance at
FMAX. If Q214=0 the tool point remains on the wall of the hole.