HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 132)

116 6 Programming: Programming Contours
6.5 P
ath Cont
ours — P
olar Coor
dinat
es Example: Linear movement with polar coordinates
Define the workpiece blank
Define the tool
Call the tool
Retract the tool
Define the datum for polar coordinates
Pre-position the tool
Move to working depth
Approach the contour at point 1
Tangential approach
Move to point 2
Move to point 3
Move to point 4
Move to point 5
Move to point 6
Move to point 1
Tangential departure
Retract tool in the working plane, cancel radius compensation
Retract tool in the spindle axis, end of program
%LINEARPO G71 *
N10 G30 G17 X+0 Y+0 Z-20 *
N20 G31 G90 X+100 Y+100 Z+0 *
N30 G99 T1 L+0 R+7,5 *
N40 T1 G17 S4000 *
N50 G00 G40 G90 Z+250 *
N60 I+50 J+50 *
N70 G10 R+60 H+180 *
N80 G01 Z-5 F1000 M3 *
N90 G11 G41 R+45 H+180 F250 *
N110 G26 R5 *
N120 H+120 *
N130 H+60 *
N140 H+0 *
N150 H-60 *
N160 H-120 *
N170 H+180 *
N180 G27 R5 F500 *
N190 G40 R+60 H+180 F1000 *
N200 G00 Z+250 M2 *
N999999 %LINEARPO G71 *
X
Y
50 100
50
I,J
5
100
R45
60°
5
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