15. COMPENSATION FUNCTION
When the tool is moved, the tool path can be shifted by the radius of the
tool (Fig. 15.4).
To make an offset as large as the radius of the tool, first create an offset
vector with a length equal to the radius of the tool (start–up). The offset
vector is perpendicular to the tool path. The tail of the vector is on the
workpiece side and the head points to the center of the tool.
If a linear interpolation, corner offset, or circular interpolation command
is specified after start–up, the tool path can be shifted by the length of the
offset vector during machining.
To return the tool to the start point at the end of machining, cancel the
cutter compensation mode.
Fig. 15.4 Outline of Cutter Compensation B
Tool center path
(G39 – G42)