HEIDENHAIN iTNC 530 199
6.4 Path Contours—Cartesian Coordinates
Corner rounding G25
The G25 function is used for rounding off corners.
The tool moves on an arc that is tangentially connected to both the
preceding and subsequent contour elements.
The rounding arc must be machinable with the called tool.
U Rounding radius: Enter the radius, and if necessary:
U Feed rate F (effective only in G25 block)
Example NC blocks
5 L X+10 Y+40 RL F300 M3
6 L X+40 Y+25
7 RND R5 F100
8 L X+10 Y+5
In the preceding and subsequent contour elements, both
coordinates must lie in the plane of the rounding arc. If
you machine the contour without tool-radius
compensation, you must program both coordinates in the
working plane.
The corner point is cut off by the rounding arc and is not
part of the contour.
A feed rate programmed in the G25 block is effective only
in that G25 block. After the G25 block, the previous feed
rate becomes effective again.
You can also use an RND block for a tangential contour
approach.
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