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?: Reserved, currently
without function
Q491 Diameter at contour start?: X coordinate of
the contour starting point (diameter value)
Q492 Contour start in Z?: Z coordinate of the
contour starting point
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 between the side at
the contour starting point and the parallel to the
rotary axis
Q501 Starting element type (0/1/2)?: Define
the type of element at the start of the contour
(circumferential surface):
0: No additional element
1: Element is a chamfer
2: Element is a radius
Q502 Size of starting element?: Size of the
starting element (chamfer section)
Q500 Radius of the contour corner?: Radius of
the contour inside corner. If no radius is specified,
the radius of the cutting insert is generated.
Q496 Angle of second side?: Angle between the
side at the contour end point and the parallel to
the rotary axis
Q503 End element type (0/1/2)?: Define the type
of element at the end of the contour:
0: No additional element
1: Element is a chamfer
2: Element is a radius
Q504 Size of end element?: Size of the end
element (chamfer section)
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
456
Cycles: Turning | AXIAL RECESSING EXTENDED
(Cycle 872, DIN/ISO: G872)
Q484
NC blocks
11 CYCL DEF 871 EXPND. RECESS,
AXIAL
Q215=+0
Q460=+2
Q491=+75
Q492=-20
Q493=+50
Q494=-50
Q495=+5
Q501=+1
Q502=+0.5
Q500=+1.5
Q496=+5
Q503=+1
Q504=+0.5
Q478=+0.3
Q483=+0.4
Q484=+0.2
Q505=+0.2
HEIDENHAIN | User's manual for cycle programming | 10/2017
Q494 Q492
Q463
Ø Q493
Q460
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
;TYPE OF STARTING
ELEMENT
;SIZE OF STARTING
ELEMENT
;RADIUS OF CONTOUR
EDGE
;ANGLE OF SECOND SIDE
;TYPE OF END ELEMENT
;SIZE OF END ELEMENT
;ROUGHING FEED RATE
;OVERSIZE FOR DIAMETER
;OVERSIZE IN Z
;FINISHING FEED RATE