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Programming: tools 5.3 tool compensation – HEIDENHAIN TNC 320 (77185x-01) ISO programming User Manual

Page 176

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Programming: Tools

5.3

Tool compensation

5

176

TNC 320 | User's Manual for DIN/ISO Programming | 3/2014

Contouring with radius compensation: G42 and G41

G43: The tool moves to the right of the programmed contour
G42: The tool moves to the left of the programmed contour
The tool center moves along the contour at a distance equal to

the radius. "Right" or "left" are to be understood as based on the

direction of tool movement along the workpiece contour. See

figures.

Between two program blocks with different radius
compensations

G43 and G42 you must program

at least one traversing block in the working plane
without radius compensation (that is, with

G40).

The TNC does not put radius compensation into

effect until the end of the block in which it is first

programmed.
In the first block in which radius compensation is
activated with

G42/G41 or canceled with G40 the

TNC always positions the tool perpendicular to the

programmed starting or end position. Position the

tool at a sufficient distance from the first or last

contour point to prevent the possibility of damaging

the contour.

Entering radius compensation

Radius compensation is entered in a

G01

block.

Select tool movement to the left of the

programmed contour: Select function G41, or

Select tool movement to the right of the contour:

Select function G42, or

Select tool movement without radius

compensation or cancel radius compensation:

Select function G40
To conclude the block, press END.