User`s manual for cycle programming

TURN SHOULDER LONGITUDINAL EXTENDED
(Cycle 812, DIN/ISO: G812)
12.6
12
HEIDENHAIN | TNC 640 | User’s manual for cycle programming | 9/2015
345
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.
Diameter at contour start Q491: X coordinate of
the contour starting point (diameter value)
Contour start in Z Q492: Z coordinate of the
contour starting point
Diameter at end of contour Q493: X coordinate of
the contour end point (diameter value)
Contour end in Z Q494: Z coordinate of the contour
end point
Angle of circumferential surface Q495: Angle
between the circumferential surface and the rotary
axis
Ø Q491
Ø Q483
Q484
Q463
Q460
Q493
Ø Q493
Q494