HEIDENHAIN TNC 410 ISO Programming - Manual (Page 170)

144 6 Programming: Programming Contours
6.5 P
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To cut a thread with more than 16 revolutions
Example: Helix
%HELIX G71 *
N10 G30 G17 X+0 Y+0 Z-20 * Define the workpiece blank
N20 G31 G90 X+100 Y+100 Z+0 *
N30 G99 T1 L+0 R+5 * Define the tool
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 departure
N170 G01 G40 G90 X+50 Y+50 F1000 * Retract in the tool axis, end program
N180 G00 Z+250 M2 *
X
Y
50
50
I,J
100
100
M64 x 1,5
...
N80 G01 Z-12.75 F1000 M3 *
N90 G11 G41 H+180 R+32 F250 *
N100 G26 R2 * Tangential approach