HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 368)

Cycles: Turning
12.15 TURN CONTOUR FACE
(Cycle 820, DIN/ISO: G820)
12
368
TNC 640 | User's Manual Cycle Programming | 1/2015
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 (incremental): Distance for
retraction and pre-positioning.
Reverse contour Q499: Define the machining
direction of the contour:
0 : Contour machined in the programmed direction
1 : Contour machined in reverse direction to the
programmed direction
Maximum cutting depth Q463: Maximum infeed in
axial direction. The infeed is divided evenly to avoid
abrasive cuts.
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.
Oversize in diameter Q483 (incremental): Diameter
oversize for the defined contour
Q460
Q463
Ø Q483
Q484