
12.TOOL FUNCTIONS B-63943EN-1/02
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12.6 TOOL AXIS DIRECTION TOOL LENGTH COMPENSATION
12.6.1 Tool Axis Direction Tool Length Compensation
Overview
When a five-axis machine that has two axes for rotating the tool is
used, tool length compensation can be performed in a specified tool
axis direction on a rotation axis. When a rotation axis is specified in
tool axis direction tool length compensation mode, tool length
compensation is applied in a specified tool axis direction on the
rotation axis by the compensation value specified in the H code. That
is, movement is made along the three linear axes (Xp, Yp, Zp).Unless
otherwise noted in the explanation of this function, the two rotation
axes are assumed to be the B-axis and C-axis.
C
B
Z
Y
X
Workpiece
C
B
Tool axis direction
Fig. 12.6.1(a) Tool Axis Direction Tool Length Compensation
Explanation
- Command for tool axis direction tool length compensation
The tool compensation vector changes as the offset value changes or
movement is made on a rotation axis. When the tool compensation
vector changes, movement is made according to the change value
along the X-axis, Y-axis, and Z-axis.
When the command specifies movement on a rotation axis only, the
position of the tool tip is the same both before and after execution of
the command. (During rotation axis movement, however, the tool tip
moves.)