User`s manual for cycle programming

Cycles: Turning
12.21 AXIAL RECESSING
(Cycle 850, DIN/ISO: G850)
12
402
HEIDENHAIN | TNC 640 | User’s manual for cycle programming | 9/2015
Cycle parameters
Machining operation Q215: Define machining
operation:
0: Roughing and finishing
1: Only roughing
2: Only finishing to finished dimension
3: Only finishing to oversize
Set-up clearance Q460: Reserved, currently
without function
Roughing feed rate Q478: Feed rate during
roughing. If M136 has been programmed, the
value is interpreted by the TNC in millimeters per
revolution, without M136 in millimeters per minute.
Feed rate for plunging Q488: Feed rate for
machining of plunging elements. This input value
is optional. If it is not programmed, the feed rate
defined for turning is effective.
Oversize in diameter Q483 (incremental): Diameter
oversize for the defined contour
Oversize in Z Q484 (incremental): Oversize for the
defined contour in axial direction
Q460
Q463
Ø Q483
Q484