HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 339)

TURN, LONGITUDINAL PLUNGE
(Cycle 813, DIN/ISO: G813)
12.7
12
TNC 640 | User's Manual Cycle Programming | 1/2015
339
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
starting point for the plunging path
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 side Q495: Angle of the plunging side. The
reference angle is formed by the perpendicular to
the rotary axis.
Maximum cutting depth Q463: Maximum infeed
(radius value) in radial direction. The infeed is divided
evenly to avoid abrasive cuts. Input range 0.001 to
999.999
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
Oversize in Z Q484 (incremental): Oversize for the
defined contour in axial direction
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.
Contour smoothing Q506:
0 : After each cut along the contour (within the
infeed range)
1 : Contour smoothing after the last cut (complete
contour); retract below 45°
2 : No contour smoothing; retract below 45°
Ø Q493
Ø Q491
Ø Q483
Q494 Q492
Q460
Q463
Q484
NC blocks
11 CYCL DEF 813 TURN,
LONGITUDINAL PLUNGE
Q215=+0
;MACHINING
OPERATION
Q460=+2 ;SAFETY CLEARANCE
Q491=+75 ;DIAMETER AT
CONTOUR START
Q492=-10 ;CONTOUR START IN Z
Q493=+50 ;DIAMETER AT END OF
CONTOUR
Q494=-55 ;CONTOUR END IN Z
Q495=+70 ;ANGLE OF SIDE
Q463=+3 ;MAX. CUTTING DEPTH
Q478=+0.3 ;ROUGHING FEED RATE
Q483=+0.4 ;OVERSIZE FOR
DIAMETER
Q484=+0.2 ;OVERSIZE IN Z
Q505=+0.2 ;FINISHING FEED RATE
Q506=+0 ;CONTOUR SMOOTHING
12 L X+75 Y+0 Z+2 FMAX M303
13 CYCL CALL