HEIDENHAIN TNC 640 (34059x-02) Cycle programming - Manual (Page 290)

Cycles: Turning
13.5 TURN SHOULDER LONGITUDINAL
(Cycle 811, DIN/ISO: G811)
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TNC 640 | User's Manual Cycle Programming | 5/2013
13.5 TURN SHOULDER LONGITUDINAL
(Cycle 811, DIN/ISO: G811)
Application
This cycle enables you to carry out longitudinal turning of right-
angled shoulders.
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 tool
is outside the contour to be machined when the cycle is called, the
cycle runs outside machining. If the tool is inside the contour to be
machined, the cycle runs inside machining.
Roughing cycle run
The cycle processes the area from the tool position to the end
point defined in the cycle.
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 cuts the area between the starting position and the
end point in longitudinal direction at the defined feed rate
Q478.
3 The TNC returns the tool at the defined feed rate 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
completed.
6 The TNC positions the tool back at rapid traverse to the cycle
starting point.
Finishing cycle run
1 The TNC traverses the tool in the Z coordinate by the set-up
clearance
Q460. The movement is performed at rapid traverse.
2 The TNC runs the paraxial infeed motion at rapid traverse.
3 The TNC finishes the finished part contour at the defined feed
rate Q505.
4 The TNC returns the tool to set-up clearance at the defined feed
rate.
5 The TNC positions the tool back at rapid traverse to the cycle
starting point.