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Technical Manual TNC 360 - heidenhain - DR. JOHANNES ...

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The resulting path is as follows:<br />

Axis standstill<br />

s a<br />

α<br />

MP7460 Constant feed rate in corners<br />

Input value: 0.001 to 179.999°<br />

α = Change of axis movement direction<br />

s a = Servo lag<br />

Path when MP7460 < α<br />

Path when MP7460 > α<br />

3.4.3 Constant feed rate in corners with M90<br />

The miscellaneous function M90 was introduced to enable constant surface speed to be achieved in<br />

corners without radius compensation.<br />

This miscellaneous function is only effective in operation with lag!<br />

with M90<br />

s a<br />

without M90<br />

8/95 <strong>TNC</strong> <strong>360</strong> 3 Servo Positioning of the NC Axes 4-67

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