Siemens Sinumerik 840D sl Programming Manual page 230

Motion commands
10.10 Thread cutting
Figure 10-4
Example 2: Convex thread in the counter-clockwise direction with end and center point
programming
Program code
N5 G0 G18 X50 Z50
N10 G336 Z100 K=3.5 KR=25 IR=20 SF=90
Figure 10-5
Example 3: Convex thread in the clockwise direction with end point and radius programming
Program code
N5 G0 G18 X50 Z50
N10 G335 Z100 K=3.5 CR=32 SF=90
230
Convex thread in the clockwise direction with end and center point programming
Convex thread in the counter-clockwise direction with end and center point programming
Comment
; Approach starting point.
; Turn convex thread in the coun-
ter-clockwise direction.
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Fundamentals