
B-63874EN/05 EXAMPLE OF PROGRAMMING 3.MACHINING CENTER
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3.1 SETTING OF TOOL LENGTH OFFSET DATA
WARNING
1 Operation of tool offset setting varies from one
machine model to another. So operations described in
this section may differ from those ion actual machine.
As to the actual operation of tool offset setting on the
actual machine, refer to the applicable manual
supplied by the respective machine tool builders for
details.
If the set data does not match the characteristic of a
specific machine, the tool may bump against the
workpiece, and the machine may be forced to perform
unnatural machining, possibly causing damage to the
tool and/or machine, and even injuries.
2 As to the operations on a machine described in this
chapter, refer to the applicable manual supplied by the
respective machine tool builders for details.
If the operation does not match the characteristic of a
specific machine, the tool may bump against the
workpiece, and the machine may be forced to perform
unnatural machining, possibly causing damage to the
tool and/or machine, and even injuries.
Assume that the Z=0 position of the workpiece coordinate is the
surface of the workpiece, while the Z=0 position of the machine
coordinate is the machine origin.
By setting the distance between these 2 points to the tool length offset
data, workpiece coordinate of Z-axis can be defined.
Tool length is different between each tool for the actual machining, so
set the offset data respectively.
The tool length offset value is the relative coordinate value of Z-axis
at the point where the tool tip is touched to the surface of the
workpiece.
(1) Select the tool used for actual machining by switch on the
machine operator’s panel.
(2) Execute the machine reference position return of Z-axis.
(3) Press [ACTPOS] and make the relative coordinate data display.
(4) Press [PRESET], then push [ALL 0], and press [ALTER], then
the relative coordinate value of all axes are reset to 0. But, the
Z-axis coordinate only is used for measuring.
(5) Press [T-OFS] and make the tool offset widow open.
(6) Make the tool tip touch at the surface of the workpiece by JOG or
Manual handwheel. Then, the distance from the machine origin is
displayed as the Z-axis relative coordinate value.
(7) Select the tool length compensation column of the tool used for
measuring by moving the cursor by cursor key.