HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 287)

10 Programming: Q Parameters 272
N220 G98 L10 *
N230 Q16 = Q6 - Q10 - Q108
N240 D00 Q20 P01 +1 *
N250 D00 Q24 P01 +Q4 *
N260 Q25 = (Q5 - Q4) / Q13
N270 G54 X+Q1 Y+Q2 Z+Q3 *
N280 G73 G90 H+Q8 *
N290 G00 G40 X+0 Y+0 *
N300 G01 Z+5 F1000 M3 *
N310 I+0 K+0 *
N320 G11 R+Q16 H+Q24 FQ11 *
N330 G98 L1 *
N340 G01 G40 Y+Q7 FQ11 *
N350 D01 Q20 P01 +Q20 P02 +1 *
N360 D01 Q24 P01 +Q24 P02 +Q25 *
N370 D11 P01 +Q20 P02 +Q13 P03 99 *
N380 G11 R+Q16 H+Q24 FQ12 *
N390 G01 G40 Y+0 FQ11 *
N400 D01 Q20 P01 +Q20 P02 +1 *
N410 D01 Q24 P01 +Q24 P02 +Q25 *
N420 D12 P01 +Q20 P02 +Q13 P03 1 *
N430 G98 L99 *
N440 G73 G90 H+0 *
N450 G54 X+0 Y+0 Z+0 *
N460 G98 L0 *
N999999 %CYLIN G71 *
Subprogram 10: Machining operation
Account for allowance and tool, based on the cylinder radius
Set counter
Copy starting angle in space (Z/X plane)
Calculate angle increment
Shift datum to center of cylinder (X axis)
Account for rotational position in the plane
Pre-position in the plane to the cylinder center
Pre-position in the tool axis
Set pole in the Z/X plane
Move to starting position on cylinder, plunge-cutting obliquely into
the material
Longitudinal cut in Y+ direction
Update the counter
Update solid angle
Finished? If finished, jump to end.
Move in an approximated „arc” for the next longitudinal cut
Longitudinal cut in Y– direction
Update the counter
Update solid angle
Unfinished? If not finished return to label 1
Reset the rotation
Reset the datum shift
End of subprogram
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amming Examples
Mkap10.pm6 29.06.2006, 08:06 272