ATS ULTIMATE CHUCK UC2, Инструкция по установке, эксплуатации и обслуживанию

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ATS Systems Ultimate Chuck Installation and Operations Manual
Chuck jaw stroke is directly proportional to piston
stroke. The model UC 2 has no lost motion like some
older models of wedge bar quick jaw change stokes.
As an example, if you are installing a UC 2 size 265
on a cylinder with .95" of stroke, your actual jaw
stroke should measure:
.350 = X
1.10 .95
.95 x .35 / 1.1 = .302" jaw stroke
( .302 - .216 = .086" longer than the adjustment pitch
for comfortable use with adjustable hard jaws. )
Record calculated stroke per jaw here= _________
If your measured actual jaw stroke is shorter than the
calculated jaw stroke, your drawtube length needs
adjustment. See the two Notes: in section 3.1.2
above.
3.3 Use half-pitch base jaws when required.
If your actual jaw stroke is less than .050" longer than
the jaw adjustment pitch and you are using hard jaws
and the adjustability feature of the chuck to grip
different diameters, use half-pitch base jaws as
required. Half-pitch base jaws look like standard
base jaws except the position of the groove on the top
of the base jaw that mates with the tongue on the
bottom of the top-jaw is offset from the gear-rack by
1/2 the pitch of the gear-rack teeth. Use 1/2 pitch or
standard base jaws as required to grip the diameter
you need and allow each jaw to have at least .050" of
residual travel after the part is gripped. Be sure your
lathe's stroke control system is properly adjusted in
case the chuck reaches the end of the jaw stroke
without actually securely gripping the workpiece.
OPERATION:
4.1 Function and operation
Model UC2 and UC2B wedge bar chucks are actuated
by rotary hydraulic or pneumatic cylinders. The axial
drawbar pull and push forces are converted to radial
jaw clamping force by tangential wedge bars
positioned in the chuck body.
Adjusting or changing the base jaw/top jaw position
must be done when the chuck is in the unclamped
(cylinder full forward, jaws full outward) position.
For safety reasons the base jaws and wedge bars are
still interlocked when the chuck piston is in this
position.
There is a cam bolt with hex socket in the chuck body
for each jaw guideway that can be turned with the
special chuck hex wrench only. Using a standard hex
key wrench will damage the chuck due to the chuck’s
interlock safety mechanism. By turning the cam bolt,
the teeth on the wedge bar are moved out of
engagement with the teeth on the base jaw. In this
position the base jaws can be adjusted inwards or
outwards or they can be removed. It is not possible to
remove the chuck key when it is rotated in this
position.
Caution: Safe practice requires the operator to never
remove his hand from the wrench when it is inserted
into the chuck. This practice prevents the possibility
of the lathe spindle being started and the wrench thrown
out of the chuck
ATTENTION
The chuck piston should not be actuated as long as
the chuck key is in one of the cam bolts of the chuck.
To do so will cause damage to internal chuck
components.
4.2 Base Jaw Position
An arc with a zone marked "SAFE" below it (or a witness
marking line) has been milled on the face of the chuck
between the jaw guides (see figure 4.1).
This zone or witness line marks the maximum outward
position of the base or monoblock jaw. The maximum
outward jaw position has been reached when the
chuck is in the jaw change position (chuck unclamped)
and the edge of the base jaw or the onepiece
monoblock jaw is inside (towards chuck centerline) of
the arc or the witness line.