HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 397)

RADIAL RECESSING EXTENDED
(Cycle 862, DIN/ISO: G862)
12.23
12
TNC 640 | User's Manual Cycle Programming | 1/2015
397
12.23 RADIAL RECESSING EXTENDED
(Cycle 862, DIN/ISO: G862)
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 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.