HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 409)

AXIAL RECESSING EXTENDED
(Cycle 872, DIN/ISO: G872)
12.26
12
TNC 640 | User's Manual Cycle Programming | 1/2015
409
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: Reserved, currently
without function
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 side Q495: Angle between the side at the
contour starting point and the parallel line to the
rotary axis
Type of starting element Q501: 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
Size of starting element Q502: Size of the starting
element (chamfer section)
Radius of contour edge Q500: Radius of the inside
contour edge. If no radius is specified, the radius of
the cutting insert is generated.
Angle of second side Q496: Angle between the
side at the contour end point and the parallel line to
the rotary axis
Type of end element Q503: 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
Q460 Ø Q493
Q494
Q463
Q492
Ø Q483
Q484
NC blocks
11 CYCL DEF 871 AXIAL RECESSING
EXTENDED
Q215=+0
;MACHINING
OPERATION
Q460=+2 ;SAFETY CLEARANCE
Q491=+75 ;DIAMETER AT
CONTOUR START
Q492=-20 ;CONTOUR START IN Z
Q493=+50 ;DIAMETER AT END OF
CONTOUR
Q494=-50 ;CONTOUR END IN Z
Q495=+5 ;ANGLE OF SIDE
Q501=+1 ;TYPE OF STARTING
ELEMENT
Q502=+0.5 ;SIZE OF STARTING
ELEMENT