HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 332)

332 Cycles: Turning
13.1
7 RADIAL RECESSING EXTENDED (Cy
c
le 862)
13.17 RADIAL RECESSING
EXTENDED (Cycle 862)
Application
This cycle enables you to radially cut in slots. Expanded scope of
function:
„ You can insert a chamfer or curve at the contour start and contour
end.
„ In the cycle you can define angles for the side walls of the slot
„ You can insert radii in the contour edges
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 start
diameter Q491 is larger than the end diameter Q493, the cycle runs
outside machining. If the start diameter Q491 is less than the end
diameter Q493, the cycle runs inside machining.
Roughing cycle run
1 The TNC runs a paraxial infeed motion at rapid traverse (lateral
infeed = 0.8 tool edge width).
2 The TNC machines the area between the starting position and 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.