HEIDENHAIN ITNC 530 - 6-2010 DIN-ISO PROGRAMMING - Inserting a Chamfer between Two Straight Lines

198 Programming: Programming Contours
6.4 Path Contours—Cartesian Coordinates
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
U Chamfer side length: Length of the chamfer, and if
necessary:
U 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.