216 Programming: Programming Contours
6.5 Path Contours—Polar Coordinates
Example: Helix
%HELIX G71 *
N10 G30 G17 X+0 Y+0 Z-20 *
Definition of workpiece blank
N20 G31 G90 X+100 Y+100 Z+0 *
N40 T1 G17 S1400 *
Tool call
N50 G00 G40 G90 Z+250 *
Retract the tool
N60 X+50 Y+50 *
Pre-position the tool
N70 G29 *
Transfer the last programmed position as the pole
N80 G01 Z-12.75 F1000 M3 *
Move to working depth
N90 G11 G41 R+32 H+180 F250 *
Approach first contour point
N100 G26 R2 *
Connection
N110 G13 G91 H+3240 Z+13.5 F200 *
Helical interpolation
N120 G27 R2 F500 *
Tangential exit
N170 G01 G40 G90 X+50 Y+50 F1000 *
Retract in the tool axis, end program
N180 G00 Z+250 M2 *
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