Detecting Function Of Absolute Zero Point Of Scale - Sony LH51 Bedienungsanleitung

5-8-5. Detecting function of absolute zero point of scale

Fig.1 Scale with built-in absolute zero point and machine movement
Fig.2 Setting of datum point
Fig.3 Relocation of datum point
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• This function is valid in combination with a scale with built-in absolute zero point.
Once the distance L between the machining datum point and the absolute zero point of the
scale is found, the machining datum point can be relocated easily for repeated machining.
• If a load or hold operation has been erroneously performed, press the relevant Axis selector key
and the key to cancel the operation, and perform the load or hold operation again.
An example is given below for the Z-axis; the same applies to the X-axis.
Note
When an addition/subtraction display is used, the axis on which the absolute zero point is used
should be selected in the initial settings. If the axis on which an absolute zero point is used is not
selected, it will not be possible to perform the operation correctly.
Absolute zero point of the scale
Machine table
Scale with built-in absolute zero point
Spot position
After the absolute zero
point is passed, move the
cutting tool back to the
machining datum point.
Spot position
Workpiece
Cutting tool
L
Absolute zero
point mark
Pick-up head
Workpiece
Across
absolute
zero point
L
Absolute zero point Machining datum point
of scale
Workpiece
Machining datum point in a hold operation
Absolute zero point
of scale
Machining datum point
Measuring length mark (on both sides)