HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 336)

336 Cycles: Turning
13.1
8 RECESSING CONT
OUR, RADIAL (Cy
c
le 860)
13.18 RECESSING CONTOUR,
RADIAL (Cycle 860)
Application
This cycle enables you to radially cut in slots of any form.
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 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
1 The TNC positions the tool at rapid traverse in the Z coordinate
(first cut-in position).
2 The TNC runs a paraxial infeed motion at rapid traverse (lateral
infeed = 0.8 tool edge width).
3 The TNC machines the area between the starting position and end
point in a radial 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.