Heidenhain TNC 640 (34059x-04) Cycle programming Manual do Utilizador descarregar pdf (Página 325)

100

101

TURN CONTOUR-PARALLEL

(Cycle 815, DIN/ISO: G815)

13.10

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

325

13.10 TURN CONTOUR-PARALLEL

(Cycle 815, DIN/ISO: G815)

Application

This cycle enables you to machine workpieces with any turning

contours. The contour description is in a subprogram.

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

machining. Turning with roughing is contour-parallel.

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

starting point of the contour is larger than the end point of the

contour, the cycle runs outside machining. If the contour starting

point is less than the end point, the cycle runs inside machining.

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 set-up clearance and begins the cycle there.

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. The cut is run contour-parallel with the defined feed

rate Q478.

3 The TNC returns the tool at the defined feed rate back to the

starting position in the X coordinate.

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-04) Cycle programming Manual do Utilizador Página 325

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