HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 98)

Fixed Cycles: Tapping / Thread Milling
4.3 RIGID TAPPING without a floating tap holder NEW (Cycle 207, DIN/
ISO: G207)
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TNC 620 | User's Manual Cycle Programming | 5/2013
4.3 RIGID TAPPING without a floating tap
holder NEW (Cycle 207, DIN/ISO: G207)
Cycle run
The TNC cuts the thread without a floating tap holder in one or
more passes.
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 The TNC stops the spindle turning at set-up clearance.