Motion commands
4.15 Thread cutting with constant lead (G33)
Fundamentals
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
167
Example of taper thread with angle less than 45°
Machining a taper thread
;
=
N10 G1 X50 Z0 S500 F100 M3
;Approach starting point, activate spindle
N20 G33 X110 Z-60 K4
;Taper thread: End point on Z and X,
;lead K in Z direction, since angle < 45°
N30 G0 Z0 M30
;Retraction, end of program
Requirements
Equipment required: speed-controlled spindle with position measurement system.
Operating principle
The control calculates the required feedrate from the programmed spindle speed and the
thread lead. The turning tool traverses across the length of the thread in the longitudinal
and/or facing direction at this feedrate. The feedrate F is not considered for G33, the
limitation to maximum axis speed (rapid traverse) is monitored by the control.
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