HEIDENHAIN SW 54843x-03 DIN Programming - Manual (Page 543)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 543
6.7 Milling cy
cles f
o
r the Y axis
Hobbing G808
G808 mills a gear profile from the "starting point in Z" to the "end point
K". In W you enter the angular position of the tool.
If an oversize has been programmed, hobbing is split up in rough-
machining and subsequent finishing.
In parameters O, R and V you define the tool shift. Shifting by R
ensures a uniform wear of the hob cutter.
Parameters
Z
Starting point
K End point
C Angle (offset angle of the C axis)
A Root circle diameter
B Outside diameter
J Number of workpiece teeth
W Angular position
S Surface speed [m/min]
I Oversize
D Direction of rotation of the workpiece
 3: M3
 4: M4
F Feed per revolution
E Finishing feed rate
P Maximum infeed
O Shift starting position
R Shift value
V Number of shifts
H Infeed axis
 0: Tool infeed is performed in the X axis
 1: Tool infeed is performed in the Y axis
Q Workpiece spindle
 0: Spindle no. 0 (main spindle) holds the workpiece
 3: Spindle no. 3 (opposing spindle) holds the workpiece