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LNC-M600 Leading Numerical Controller Maintenance Manual

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<strong>LNC</strong>-<strong>M600</strong><br />

Machine Adjustment<br />

7.3 Double Ball Bar Measure – Backlash or Circular Spike<br />

• Backlash<br />

Using DOUBLE BALL BAR to measure backlash, the result analyzing diagram is as<br />

following (only the Y axis part, which is called Positive Backlash). Able to see the Y<br />

axis backlash is 14um from the diagram. So please set this value (i.e., 14um) into<br />

Para. # 0045 and set BIT1 of Para. # 0117 to 1 in order to enable Y axis backlash<br />

compensation function.<br />

• Reversal Spikes<br />

Using DOUBLE BALL BAR to executing canned cycle testing, the result analyzing<br />

diagram is as below. In the diagram, the sticking out path in the direction changing<br />

area of each axis is called the circular spikes phenomenon.<br />

<strong>LNC</strong> Technology Co., Ltd. 287

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