Huvema HU 50 H, Operation Manual, Page: 34 / 37

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14.5 Right and left tilt of the spindle (Figure.12)
Hind box of the swivel head revolves an angle 90
o
clockwise or counter-
clockwise, which make the spindle work in different position, so the machine will
widen the longitudinal processing range.
14.6 Revolve the spindle in horizontal plane. (Figure. 13)
The spindle with the support for milling arbor may revolve in horizontal plane
in order to improve the rigidity of the milling arbor. Must revolve forward box and
hind box to the different direction when adjusting them. The angle of the spindle is
decided by adjustment of forward box and hind Box. The adjustable angle is
calculated or checked by the following table.
The formula for calculating is:
cos
β
=2cos
θ
-1 tg
α
= /2 tg
θ
——Angle included between the axis of spindle and cross movement of
table.
β
— — Forward Box Angle.
α
— — Hind Box Angle.
For example:
1.cut-45
o
dextrorotation
Hind Box
α
24
o
28' 11" (counterclockwise)
Forward Box
β
65
o
31' 49" (clockwise)
2.cut-30
o
levorotation
Hind Box
α
15
o
32' 32" (clockwise)
Forward Box
β
42
o
56' 29" (counterclockwise)
.
β
2