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Chapter 4 Tool Nose Radius Compensation(G41,G42)
207
Ⅰ
Programming
occurs “……the command cannot be used in C compensation mode.”
z
G90, G94 (taking an example of G42)
Compensation method of tool nose radius compensation in G90 or G94:
A. Cancel the previous tool nose radius compensation;
B. Create the previous C compensation before cutting, and the path in the following figure
①
creates the previous radius compensation mode;
C. The paths 2, 3 in the following figure are the radius compensation cutting;
D. The path 4 in the following figure can cancel the radius compensation, and the tool returns to
the cycle starting point; there is G00,G01 in the following block, and the CNC automatically
recovers the compensation mode.
1
2
3
4
Programmed path
Tool nose center path
4
3
2
1
Programmed path
Tool nose center path
Fig. 4-22 Offset direction of G90 tool nose Fig. 4-23 Offset direction of G94 tool nose
radius compensation radius compensation
