3 G/M Codes
3 - 75
Tool-tip and assumed tool-tip direction
When executing tool-tip radius compensation, the radius and arc must be accurate;
otherwise, the cutting result will not be precise. Manufacturers of disposable tools
always provide accurate tool-tip radius data. The radius data are to be entered in the
"R" field on the Tool Length Compensation page (unit: mm).
Besides the tool-tip radius, the direction of fictitious tool-tips must be acquired (refer to the
position of P in Fig. 3-54). The direction is defined by integers 0~9 (Fig. 3-44). In the system
with tools on the top (rear) holder, the direction 3 is for outer diameter cutting, while the
direction 2 is for inner diameter cutting. The data of fictitious tool-tip direction are to be
entered in the "T" field on the Tool Length page.
Once these two data are acquired, the control unit compensates for the tool-tip properly
by calculating "R" and "T" values internally after giving the tool-tip radius
compensation command.
Fig 3-54 Fictitious Tool-tip Direction
Direction-1 Direction-2
Direction-3 Direction-4
Direction-5 Direction-6
Direction-7 Direction-8
Direction-0,9
2
1
6
7 0 9 5
8
3 4
Or simplified as below
X
Z
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