Programming Contours | Path contours Cartesian coordinates
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HEIDENHAIN | TNC 320 | ISO Programming User's Manual | 10/2017
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Rounded corners G25
The G25 function rounds off contour 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.
Rounding radius: Enter the radius, and if
necessary:
Feed F (effective only in the G25 block)
Example
N50 G01 X+10 Y+40 G41 F300 M3*
N60 G01 X+40 Y+25*
N70 G25 R5 F100*
N80 G01 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 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 G25 block for a tangential contour
approach.
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