Acu-Rite CNC 3500i user manual Contouring with radius compensation

4.2 Tool Data

Contouring with radius compensation

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 work piece contour as viewed from behind a moving tool.

Between two program blocks with different radius compensations, you must program at least one traversing block in the working plane without radius compensation (G40).

The CNC 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, or canceled, the CNC 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.

76 4 Tool Management