Cycle Parameters - HEIDENHAIN TNC 640 User Manual

12

Cycle parameters

Q215 Machining operation (0/1/2/3)?: Define
machining operation:
0: Roughing and finishing
1: Only roughing
2: Only finishing to finished dimension
3: Only finishing to oversize
Q460 Set-up clearance? (incremental): Distance
for retraction and pre-positioning.
Q491 Diameter at contour start?: X coordinate of
the contour starting point (diameter value)
Q492 Contour start in Z?: Z coordinate of the
starting point for the plunging path
Q493 Diameter at end of contour?: X coordinate
of the contour end point (diameter value)
Q493 Contour end in Z?: Z coordinate of the
contour end point
Q495 Angle of side?: Angle of the plunging side.
The reference angle is formed by the parallel line
to the rotary axis
Q463 Maximum cutting depth?: Maximum infeed
in axial direction. The infeed is divided evenly to
avoid abrasive cuts.
Q478 Roughing feed rate?: Feed rate for
roughing. If M136 has been programmed, the
value is interpreted by the TNC in millimeters
per revolution, without M136 in millimeters per
minute.
Q483 Oversize for diameter? (incremental):
Diameter oversize for the defined contour
Q484 Oversize in Z? (incremental): Oversize for
the defined contour in axial direction
Q505 Finishing feed rate?: Feed rate for
finishing. If M136 has been programmed, the
value is interpreted by the TNC in millimeters
per revolution, without M136 in millimeters per
minute.
Q506 Contour smoothing (0/1/2)?:
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°
406
Cycles: Turning | TURN, TRANSVERSE PLUNGE
(Cycle 823, DIN/ISO: G823)
Q494
NC blocks
11 CYCL DEF 823 TURN TRANSVERSE
PLUNGE
Q215=+0
Q460=+2
Q491=+75
Q492=+0
Q493=+20
Q494=-5
Q495=+60
Q463=+3
Q478=+0.3
Q483=+0.4
Q484=+0.2
Q505=+0.2
Q506=+0
12 L X+75 Y+0 Z+2 FMAX M303
13 CYCL CALL
HEIDENHAIN | User's manual for cycle programming | 10/2017
Q460
Q463
Ø Q493
Q484
Q492
Ø Q491
Ø Q483
;MACHINING OPERATION
;SAFETY CLEARANCE
;DIAMETER AT CONTOUR
START
;CONTOUR START IN Z
;DIAMETER AT CONTOUR
END
;CONTOUR END IN Z
;ANGLE OF SIDE
;MAX. CUTTING DEPTH
;ROUGHING FEED RATE
;OVERSIZE FOR DIAMETER
;OVERSIZE IN Z
;FINISHING FEED RATE
;CONTOUR SMOOTHING