12 pr ogr amming examples – HEIDENHAIN TNC 620 (73498x-01) ISO programming User Manual
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Programming: Q parameters
8.12 Pr
ogr
amming examples
N200 G00 G40 Z+250 M2 *
Retract in the tool axis, end program
N210 G98 L10 *
Subprogram 10: Machining operation
N220 Q16 = Q6 - Q10 - Q108 *
Account for allowance and tool, based on the cylinder radius
N230 D00 Q20 P01 +1 *
Set counter
N240 D00 Q24 P01 +Q4 *
Copy starting angle in space (Z/X plane)
N250 Q25 = ( Q5 - Q4 ) / Q13 *
Calculate angle increment
N260 G54 X+Q1 Y+Q2 Z+Q3 *
Shift datum to center of cylinder (X axis)
N270 G73 G90 H+Q8 *
Account for rotational position in the plane
N280 G00 G40 X+0 Y+0 *
Pre-position in the plane to the cylinder center
N290 G01 Z+5 F1000 M3 *
Pre-position in the spindle axis
N300 G98 L1 *
N310 I+0 K+0 *
Set pole in the Z/X plane
N320 G11 R+Q16 H+Q24 FQ11 *
Move to starting position on cylinder, plunge-cutting obliquely into
the material
N330 G01 G40 Y+Q7 FQ12 *
Longitudinal cut in Y+ direction
N340 D01 Q20 P01 +Q20 P02 +1 *
Update the counter
N350 D01 Q24 P01 +Q24 P02 +Q25 *
Update solid angle
N360 D11 P01 +Q20 P02 +Q13 P03 99 *
Finished? If finished, jump to end
N370 G11 R+Q16 H+Q24 FQ11 *
Move in an approximated "arc" for the next longitudinal cut
N380 G01 G40 Y+0 FQ12 *
Longitudinal cut in Y– direction
N390 D01 Q20 P01 +Q20 P02 +1 *
Update the counter
N400 D01 Q24 P01 +Q24 P02 +Q25 *
Update solid angle
N410 D12 P01 +Q20 P02 +Q13 P03 1 *
Unfinished? If not finished, return to LBL 1
N420 G98 L99 *
N430 G73 G90 H+0 *
Reset the rotation
N440 G54 X+0 Y+0 Z+0 *
Reset the datum shift
N450 G98 L0 *
End of subprogram
N99999999 %CYLIN G71 *