Owner's manual

Cutter Diameter Compensation

(G40, G41, G42)

Chapter 21

21-5

Example 21.2

Cutter Compensation Sample Paths

All of the following blocks result in the same tool path. Assume the

selected plane is the XY plane.

N1D1X0Y0;

N2G41X1Y1;

N3X2;

M30;

N1X0Y0F500;

N2G41X1Y1D1;

N3X2;

M30;

N1X0Y0F500;

N2G41;

N3X1Y1D1;

N4X2

M30;

Important: The c utter compensation feature is not available for any

motion blocks that are programmed in MDI mode (see section 21.6.5).

The cutter c ompensation mode may be altered by programming either G41,

G42, or G40; or the tool radius may be changed in an MDI program.

However, none of the tool paths executed in MDI is compensated. Any

changes made t o cutter compensation are applied until the next block

executed in automatic mode.

The D--word calls the following data from the offset tables:

initial c utter radius data

cutter radius wear offset data

The sum of these t wo types of offset data is used by the control as the data

for the cutter compensation function.