HEIDENHAIN TNC 640 (34059x-01) Cycle programming - Manual (Page 289)

HEIDENHAIN TNC 640 289
13.5 TURN SHOULDER, L
O
NGITUDINAL (Cy
c
le 81
1)
Cycle parameters
U Machining operation Q215: Define the machining
operation:
0: Roughing and finishing
1: Only roughing
2: Only finishing to finished dimension
3: Only finishing to oversize
U Set-up clearance Q460 (incremental): Distance for
retraction and pre-positioning
U Diameter at end of contour Q493: X coordinate of
the contour end point (diameter value)
U Contour end in Z Q494: Z coordinate of the contour
end point
U Maximum cutting depth Q463: Maximum infeed
(radius value) in radial direction. The infeed is divided
evenly to avoid abrasive cuts.
U 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.
U Oversize in diameter Q483: Diameter oversize for
the defined contour
U Oversize in Z Q484: Oversize for the defined contour
in axial direction
U Finishing feed rate Q505: Feed rate during
finishing. If M136 has been programmed, the value is
interpreted by the TNC in millimeters per revolution,
without M136 in millimeters per minute.
Example: NC blocks
11 CYCL DEF 811 TURN SHOULDER LONG.
Q215=+0 ;MACHINING OPERATION
Q460=+2 ;SET-UP CLEARANCE
Q493=+50 ;DIAMETER AT END OF CONTOUR
Q494=-55 ;CONTOUR END IN Z
Q463=+3 ;MAX. CUTTING DEPTH
Q478=+0.3 ;ROUGHING FEED RATE
Q483=+0.4 ;OVERSIZE IN DIAMETER
Q484=+0.2 ;OVERSIZE IN Z
Q505=+0.2 ;FEED RATE FOR FINISHING
12 L X+75 Y+0 Z+2 FMAX M303
13 CYCL CALL