
B-63943EN-1/02 16.MEASUREMENT
- 1873 -
Example 2
The measuring reference point may be an imaginary point (imaginary
zero point), as shown in the figure below. The difference between the
imaginary zero point and the measuring tool nose tip position at the
mechanical reference point can be set as the tool offset value of the
measuring tool, by setting the distances from the imaginary zero point
to the respective contact faces in parameters.
+X
Measuring tool nose
position at the mechani
cal reference position
(0,0)
Zt
Zm
Zp
Xp
Xm
OFSx
OFSZ
Xt
+Z
Machine zero
point
Measuring reference position
(Imaginary zero point)
When the imaginary zero position is set as the measuring reference position
- Setting the workpiece coordinate system shift amount
The workpiece coordinate system shift amount for the Z-axis can be
set as follows: Bring the tool to touch the workpiece end face.
Subtract the tool geometry offset value of the tool (the value shifted in
the coordinate system by the tool geometry offset) from the machine
coordinate value (the distance from the measuring tool nose tip
position at the mechanical reference position (machine zero point) to
the workpiece end face).The result is set as the workpiece coordinate
system shift value.
(Z axis workpiece coordinate system shift amount to be set
(EXOFSz) )
= (Z axis tool geometry offset value of the corresponding tool
(OFSz)) – (Z axis machine coordinate value(Zt))
Using the above methods, the workpiece coordinate system is set with
the workpiece end face (the contact point of the sensor) specified as
the programmed zero point of the workpiece coordinate system of the
Z-axis.