Siemens SINUMERIK 840DE

Programming Motion Commands
4.15 Thread cutting with constant lead (G33)
Fundamentals
4-50 Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
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N10 G1 G54 X99 Z10 S500 F100 M3 ;Zero offset, approach
;start point, spindle on
N20 G33 Z-100 K4 ;Cylindrical thread: end point in Z
N30 G0 X102
N40 G0 Z10
N50 G1 X99
;Retract to starting position
N60 G33 Z-100 K4 SF=180 ;2nd cut: Starting point offset 180°
N70 G0 X110 ;Retract tool
N80 G0 Z10 ;End of program
N90 M30
Example of taper thread with angle less than 45°
Machining a taper thread
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