Okuma OSP 5000, Электротехническое обслуживание, Учебное пособие

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7-10
Okuma America Corporation
Machining Center Machining Center
Machining Center Machining Center
Machining Center
Rev. 8-21-01
IN POSITION
This parameter sets up the window of allowable positioning when executing exact stop
checks. Once the axis is inside this window, the control moves on to the next block in
the program. Setting this parameter to zero can cause the machine to “hang up” without
an alarm indication.
ZERO OFFSET
This parameter sets the zero offset of the machine coordinate system for each axis.
Figure 2 shows a description the zero offsets on machining centers.
SETTING ZERO OFFSET
Any time an Absolute Position Encoder is replaced, a belt is broken, or a motor is removed for
inspection, the zero offset of that particular axis has to be reset.
Before changing the encoder, move the axis to the zero position if possible. If you can jog the
axis, move it to the zero position or in MDI enter G00 (axis in question)0 , WRITE and cycle
start. Power off, change encoder, power up, go to zero offset in system parameters, position
cursor at the appropriate axis and press CAL then WRITE.
Machine Zero
Machine Table
X axis
Program Zero
Zero Offset
Machine Table
Z axis
(Y axis on horizontal m/c)
Fig. 2
Y axis (Z axis on horizontal m/c)