Heidenhain TNC 640 (34059x-04) Cycle programming Manual do Utilizador descarregar pdf (Página 386)

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101

Cycles: Turning

13.27 AXIAL RECESSING

(Cycle 870, DIN/ISO: G870)

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TNC 640 | User's Manual Cycle Programming | 3/2014

13.27 AXIAL RECESSING

(Cycle 870, DIN/ISO: G870)

Application

This cycle enables you to axially cut in slots of any form (face

recessing).

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

machining. Turning is run paraxially with roughing.

Roughing cycle run

The TNC uses the tool position as cycle starting point when a

cycle is called. If the Z coordinate of the starting point is less than

the contour starting point, the TNC positions the tool in the Z

coordinate to the contour starting point and begins the cycle there.

1 The TNC positions the tool at rapid traverse in the X coordinate

(first cut-in position).

2 The TNC runs a paraxial infeed motion at rapid traverse (lateral

infeed = 0.8 cutting width).

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

end point in axial direction at the defined feed rate Q478.

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

beginning of cut.

5 The TNC repeats this process (2 to 4) until the slot form is

completed.

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

starting point.

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