HEIDENHAIN iTNC 530 (60642x-04) ISO programming - Manual (Page 222)

222 Programming: Programming Contours
6.4
Pa
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cont
ours—Car
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Inserting a chamfer between two straight lines
The chamfer enables you to cut off corners at the intersection of two
straight lines.
 The line blocks before and after the G24 block must be in the same
working plane as the chamfer
 The radius compensation before and after the G24 block must be the
same
 The chamfer must be machinable with the current tool
 Chamfer side length : Length of the chamfer, and if
necessary:
 Feed rate F (effective only in G24 block)
Example NC blocks
X
Y
40
12 30
5
12
5
N70 G01 G41 X+0 Y+30 F300 M3 *
N80 X+40 G91 Y+5 *
N90 G24 R12 F250 *
N100 G91 X+5 G90 Y+0 *
You cannot start a contour with a G24 block.
A chamfer is possible only in the working plane.
The corner point is cut off by the chamfer and is not part
of the contour.
A feed rate programmed in the CHF block is effective only
in that block. After the G24 block, the previous feed rate
becomes effective again.