HEIDENHAIN TNC 640 (34059x-04) Cycle programming - Manual (Page 369)

RADIAL RECESSING
(Cycle 861, DIN/ISO: G861)
13.22
13
TNC 640 | User's Manual Cycle Programming | 3/2014
369
13.22 RADIAL RECESSING
(Cycle 861, DIN/ISO: G861)
Application
This cycle enables you to radially cut in right-angled slots.
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 only the area from the cycle starting point to
the end point defined in the cycle.
1 The TNC runs a paraxial infeed motion at rapid traverse (lateral
infeed = 0.8 cutting width).
2 The TNC cuts the area between the starting position and the
end point in axial direction at the defined feed rate
Q478.
3 The TNC positions the tool back at rapid traverse to the
beginning of cut.
4 The TNC repeats this process (1 to 3) until the slot width is
reached.
5 The TNC positions the tool back at rapid traverse to the cycle
starting point.