HEIDENHAIN CNC Pilot 4290 V7.1 Description of B and Y axes - Manual (Page 67)

HEIDENHAIN CNC PILOT 4290 67
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DIN PLUS (Y Axis): Milling Cy
cles
Hobbing G808
Available as of software version 625 952-05.
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.
Z
K P
I
A
Y
Y=0
O
R R R R
V=4
B
Z
Y
X
X
Y
H=0 H=1
Parameters
Z
Starting point
K End point
A Root circle diameter
B Outside diameter
W Angular position
J Number of teeth, workpiece
D Direction of rotation of the workpiece
„ 3: M3
„ 4: M4
S Surface speed [m/min]
P Maximum infeed
F Feed per revolution
I Oversize
E Finishing feed rate
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
U Gear ratio of tool