ATS ULTIMATE CHUCK UC2, Installation, Operation And Maintenance Manual

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ATS Systems Ultimate Chuck Installation and Operations Manual
• Coat threads on drawtube and drawtube adapter
with never-seize. Using a sling or a lifting eye
bolt, hold the chuck in alignment with the center
of the spindle in front of the spindle nose.
• Using the supplied T-wrench (51), rotate the
threaded draw tube adapter bushing in the chuck
fully onto the drawtube or drawbar.
• Actuate cylinder to close the chuck. Tighten the
chuck mounting bolts in a crosswise pattern.
Torque bolts to specification.
M12 85 ft-lb ½-13 90 ft-lb
M16 190 ft-lb 5/8-11 190 ft-lb
M20 365 ft-lb ¾-10 365 ft-lb
M22 520 ft-lb 7/8-9 560 ft-lb
M24 660 ft-lb 1"-8 800 ft-lb
• Check the chuck concentricity on the O.D.
indicating surface, and face runout.
• Check the operation of the drawbar/drawtube.
• Actuate the cylinder so that it reaches its forward
most position (jaw open). Using T-wrench (51),
unscrew drawtube adapter (counterclockwise)
until chuck actuator (3) reaches it's forward most
position and then turn the T-wrench back
clockwise a quarter turn.
• Unlock the wedge bar using special hex wrench
(47) and insert the base jaws which are marked
1,2, and 3 into the chuck jaw guideways with the
corresponding number. (See this manual section
4, Operation)
Note: If the special T-handled hex wrench will
not turn easily, the drawbar/drawtube assembly
is too short. This condition may be corrected by
rotating the drawtube adapter bushing counter
clockwise. Be sure there is sufficient thread
engagement after any adjustment.
Note: If the jaws become tight when changing
jaws and sliding them to the chuck center, the
drawtube assembly may be too long which can
be corrected by rotating the drawtube adapter
bushing clockwise.
Exact drawtube adjustment is important to ensure
full jaw stroke. Be sure the drawtube doesn't
bottom out in the chuck when forward and that
an adequate number of threads are engaged
between the drawtube and the drawtube adapter.
• Actuate the cylinder and check that the base jaws
move smoothly and that the jaw stroke is correct.
•
With calipers, measure actual stroke per jaw and
record here
Actual jaw stroke per jaw =
________
Removing the chuck is done in the reverse order.
3.2 Calculate theoretical jaw stroke for this
cylinder and compare to actual measured
jaw stroke.
Generally speaking, the Ultimate Chuck has longer
jaw stroke than most power chucks but requires
longer piston stroke than simple wedge-hook chucks
to achieve full jaw stroke. Even when using the same
shorter piston stroke as simple wedge-hook chucks,
the Ultimate Chuck's shortened jaw stroke might be
longer than the simple chuck. But this jaw stroke
might not be suitable for all applications, specifically
for applications using hard jaws and the chuck's
adjustability feature to grip different diameters with
the one set of jaws. This is due to the adjustment
pitch of the chuck and jaw. For proper use in these
applications, the actual jaw stroke should be about
.050" longer or more than the adjustment pitch.
1= Chuck model size
2= Full chuck piston stroke- in.
3= Full jaw stroke using full chuck piston stroke- in.
4= Jaw adjustment pitch
5= Minimum cylinder stroke to provide jaw stroke of
.050" longer than adjustment pitch.
1 2 3 4 5
180 .82" .27" .189" .73"
215 .94 .31 .189 .72
260 1.10 .35 .216 .85
315 1.10 .36 .216 .85
400 1.18 .39 .216 .85
500 1.38 .45 .275 1.10
630 1.57 .50 .275 1.10