GSK 980MDc, User Manual

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GSK980MDc Milling CNC System User Manual
168
I Programming
If the canned cycle command is specified in compensation mode, the compensation will be temporarily
cancelled in the canned cycle operation 1. The compensation mode is automatically restored after the
canned cycle is terminated.
6.2.7 Exceptional case
z When the inner corner machining is less than tool radius
When the inner corner machining is less than tool radius, the inner offset of a tool will cause over cut.
The tool stops and alarm occurs after moving at the beginning or at the corner in previous block. But if the
switch of “Single block” is ON, the tool will be stopped at the end of the previous block.
z
When a groove less than the tool diameter is machined
When the tool center moves opposite to the direction of programmed path, the over cutting will be
generated by the cutter radius compensation. Tool stops and alarm appears after moving at the beginning
of previous block or at the corner.
z When a step less than the tool radius is machined
When a program contains a step which is an arc and less than tool radius, tool center path may form a
opposite movement direction to the programmed path. So the first vector is ignored and it moves to the end
of the second vector along a straight line. The program will be stopped for Single block mode, the cycle
continues if it is not single block mode. The compensation will be executed correctly and no alarm will be
generated if the step is a straight line. (But the uncut part is reserved.)
z
When the sub-program is contained in G code
CNC should be in compensation cancellation mode before calling the sub-program (namely, before the
G98 is performed). Offset can be applied after entering the sub-program, but the compensation cancellation