Heidenhain TNC 640 (34059x-01) Cycle programming User Manual download pdf (Page 317)

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HEIDENHAIN TNC 640 317

13.13 TURN, TRANSVERSE PLUNGE (Cycle 823)

13.13 TURN, TRANSVERSE PLUNGE

(Cycle 823)

Application

This cycle enables you to face turn plunge elements (undercuts).

You can use the cycle either for roughing, finishing or complete

machining. Turning is run paraxially with roughing.

The cycle can be used for inside and outside machining. If the start

diameter Q491 is larger than the end diameter Q493, the cycle runs

outside machining. If the start diameter Q491 is less than the end

diameter Q493, the cycle runs inside machining.

Roughing cycle run

In undercutting the TNC runs the infeed with feed rate Q478. The

return movements are then each at set-up clearance.

1 The TNC runs a paraxial infeed motion at rapid traverse. The infeed

value is calculated by the TNC with Q463 MAX. CUTTING DEPTH.

2 The TNC machines the area between the starting position and end

point in the plane direction at the defined feed rate.

3 The TNC returns the tool at the defined feed rate Q478 by the

infeed value.

4 The TNC positions the tool back at rapid traverse to the beginning

of cut.

5 The TNC repeats this process (1 to 4) until the final contour is

completed.

6 The TNC positions the tool back at rapid traverse to the cycle

starting point.

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Heidenhain TNC 640 (34059x-01) Cycle programming User Manual Page 317

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