Bison 32 Series Instruction Manual page 10

Installation of the chuck with plain back
mounting
The chuck with plain back mounting is mounted
on the spindle nose by use of an adapter. These
chucks are primarily intended for threaded spindle
nose. Connection dimensions of adapters are given
in Fig. 9-13 and Tables 2-3.
Installation of the chuck with fine adjustment
type 3564, 3565, 3864 and 3865 (fig. 6)
Mount the
and lightly tighten all the screws
the chuck and adapter. In order to obtain the
desired chuck setting accuracy, grip a workpiece
in the jaws engaging their full face and fix securely.
Tighten the adjusting screws
with the adapter.
Place a dial indicator on workpiece about 60
mm from the jaws and rotate the chuck with the
workpiece to determine maximum and minimum
points and locations of nearest adjusting screws.
Rotate the chuck to the adjusting screw nearest to
the point of the indicator maximum read-out.
Rotate to the opposite located adjusting screw and
unscrew it by the half of the TIR error.
Rotate to the previous location and screw in the
opposite adjusting screw.
Repeat these steps until required accuracy is
reached and all the adjusting screws are equally
tightened.
Having completed the adjustment tighten the
screws connecting chuck and adapter. Use ground
bar stock for setting to obtain maximum accuracy.
1
8
chuck on the adapter
connecting
3
to a light contact
2
2
3
Installation of the chuck with fine adjustment
3264 and 3265 (fig. 7)
Mount the chuck on the adapter
all screws
backplate. Slightly loosen screws
the chuck body and driver
In order to obtain the required accuracy of the
chuck, grip a workpiece in the jaws (engaging their
full face) and fix securely.
Tighten the taper adjusting screws
1
contact with the adapter
on workpiece about 60 mm from the jaws and
rotate the chuck to determine maximum and
minimum points and locations of nearest adjusting
screws.
Rotate the chuck to the adjusting screw nearest to
the point of the indicator maximum read-out.
Rotate to the opposite located adjusting screws and
unscrew them by the 1/3 of the TIR error. Rotate
to the previous location and screw in the opposite
adjusting screw.
If the location of indicator maximum read-out is
between two adjusting screws, the chuck should
be rotated to the opposite located adjusting screws
which should be unscrewed by half of the TIR error,
and then screw in the opposite adjustment screw.
Repeat these steps until the required accuracy
is reached and all adjusting screws are equally
tightened. Having completed the adjustment
tighten the screws connect the chuck and the
adapter.
1
fig. 6
connecting the chuck with the
2
.
3
. Place a dial indicator
3
2
4
3
and tighten
1
connecting
5
to slight
4
5
fig. 7