HEIDENHAIN TNC 620 User Manual page 223

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Radius compensation: Machining corners

Outside corners:

If you program radius compensation, the TNC moves the tool

around outside corners on a transitional arc. 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

is therefore limited by the geometry of the programmed contour

Danger of collision!

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.

HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016

Tool compensation

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