HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 311)

HEIDENHAIN TNC 640 311
13.1
1 TURN SHOULDER F
A
CE (Cy
c
le
821)
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.
Please note while programming:
Program a positioning block to the starting position with
radius compensation R0 before the cycle call.
The tool position at cycle call defines the size of the area
to be machined (cycle starting point).
Also refer to the fundamentals of turning cycles (see
page 286).