Heidenhain TNC 640 (34059x-01) Cycle programming User Manual Page 291

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HEIDENHAIN TNC 640 291
13.6 TURN SHOULDER, LONGITUDINAL EXTENDED (Cycle 812)
Finishing cycle run
If the starting point lies in the area to be machined, the TNC positions
the tool beforehand to set-up clearance in the Z coordinate.
1 The TNC runs the paraxial infeed motion at rapid traverse.
2 The TNC finishes the finished part contour (contour starting point
to contour end point) at the defined feed rate Q505.
3 The TNC returns the tool to set-up clearance at the defined feed
rate.
4 The TNC positions the tool back at rapid traverse to the cycle
starting point.
Please note while programming:
Also refer to the fundamentals of turning cycles (see page 286).
Program a positioning block to a safe position with radius
compensation R0 before the cycle call.
The tool position at cycle call (cycle starting point) affects
the area to be machined.
Also refer to the fundamentals of turning cycles (see
page 286).
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