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3 t ool compensation – HEIDENHAIN iTNC 530 (60642x-04) User Manual

Page 219

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HEIDENHAIN iTNC 530

219

5.3 T

ool compensation

Radius compensation: Machining corners

Outside corners:

If you program radius compensation, the TNC moves the tool

around outside corners either on a transitional arc or on a spline

(selectable via MP7680). If necessary, the TNC reduces the feed

rate at outside corners to reduce machine stress, for example at

very great changes of direction.

Inside corners:

The TNC calculates the intersection of the tool center paths at inside

corners under radius compensation. From this point it then starts

the next contour element. This prevents damage to the workpiece

at the inside corners. The permissible tool radius, therefore, is

limited by the geometry of the programmed contour.

Machining corners without radius compensation
If you program the tool movement without radius compensation, you

can change the tool path and feed rate at workpiece corners with the

miscellaneous function M90, see "Smoothing corners: M90", page 387.

RL

RL

RL

Caution: Danger to the workpiece!

To prevent the tool from damaging the contour, be careful

not to program the starting or end position for machining

inside corners at a corner of the contour.