Chapter Three Programming
71
Part 1 Programming
3.6.3 Cutter compensation (G40
~
G42)
3.6.3.1 The function of cutter compensation
The tool with a radius R machines a workpiece specified in the Fig. A, the corresponding tool
center must be a B path of the radius R, in this case, tool removes a tool distance is called offset,
calculate the distance of the tool path (offset) by the function of tool compensation, refer to the
following figure.
Programmer can edit a workpiece figure with the tool offset mode, if a tool radius (offset value) is
measured and set in NC in the machining, the tool path may be offset (path B) regardless of the
programmed path.
There are two tool compensation modes (B and C), only mode C is described in this section. The
difference between B and C are shown below:
In the tool compensation B, the corner equals to 90° or less than which can not be performed an
internal offset. In this case, a suitable inner corner arc should be programmed.
3.6.3.2 Offset value (D code)
Up to 32 offset values can be set to the offset memory (there 64, 99 or 184 pieces can be
selected), (32 offsets are separately used in the tool length compensation and too position offset).
The offset value based on the D specified on the block, and the bit parameter is set by the MDI &
LCD.
The setting range is as follows:
Input in mm
Input in inch
Offset value
0mm ~ 999.999mm
0inch ~99.9999inch
The offset value corresponding to 00 or D00 always means 0.
It is impossible to set D0 to any other offset amount.
3.6.3.3 Offset vector
The offset vector is the two dimensional vector that is equal to the offset vector assigned by D
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Страница 297: ...Appendix 285 APPENDIX Appendix 1 System Version Display The system version is displayed immediately after power on ...
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