Turn, Transverse Plunge Extended (Cycle 824, Din/Iso: G824); Application; Roughing Cycle Run - HEIDENHAIN TNC 640 User Manual

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Cycles: Turning | TURN, TRANSVERSE PLUNGE EXTENDED

(Cycle 824, DIN/ISO: G824)

12.14 TURN, TRANSVERSE PLUNGE

(Cycle 824, DIN/ISO: G824)

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

Expanded scope of function:

You can insert a chamfer or curve at the contour start and

contour end.

In the cycle you can define an angle for the face and a radius for

the contour edge

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.

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

2 The TNC cuts the area between the starting position and the

end point in traverse direction at the defined feed rate.

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

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

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

starting point.

HEIDENHAIN | User's manual for cycle programming | 10/2017