HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 101)

TAPPING NEW with a floating tap holder (Cycle 206, DIN/ISO:
G206)
4.2
4
TNC 640 | User's Manual Cycle Programming | 5/2013
101
4.2 TAPPING NEW with a floating tap
holder (Cycle 206, DIN/ISO: G206)
Cycle run
1 The TNC positions the tool in the tool axis at rapid traverse
FMAX to the entered set-up clearance above the workpiece
surface.
2 The tool drills to the total hole depth in one movement.
3 Once the tool has reached the total hole depth, the direction of
spindle rotation is reversed and the tool is retracted to the set-
up clearance at the end of the dwell time. If programmed, the
tool moves to the 2nd set-up clearance at
FMAX.
4 At the set-up clearance, the direction of spindle rotation
reverses once again.