Minster IOI, Руководство по обслуживанию

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This section contains instructions for relieving a slide
from a “stuck on bottom” condition, checking bearing
clearances, and installing replacement bushings. It is
recommended that these services be performed only
by authorized personnel who are experienced in the
care and maintenance of mechanical power presses.
RELIEVING A SLIDE FROM A
“STUCK ON BOTTOM” CONDITION
If the slide and upper die should become “stuck” on or
near the bottom of the stroke, the press user can nor-
mally relieve this condition using one of the following
methods.
•
Using air pressure to “lift the slide off bottom.”
•
Using the (optional) “clutch bumping arrangement.”
It should be noted that method used is dependent upon
the severity of the condition. The press user should
attempt to use the simplest method first. If that method
does not relieve the condition, the user should use the
next method (in the order listed above). A procedure for
each of the methods (listed above) is described below.
Using Full Line Air Pressure To
Free A “Stuck On Bottom” Press:
1. Stop the main drive motor and place the Stroking
Selector Switch in the OFF position. Make certain
the flywheel has stopped turning completely. Attach
a WARNING sign to the press controls to warn other
personnel that the press is currently being serviced.
2. Determine slide position (i.e., before or after bottom
of stroke). Then place the DRIVE MOTOR, FWD-
REV Selector Switch in the appropriate position.
(See NOTE below.)
NOTE: If the slide is stuck “before bottom,” place
the switch in REV (Reverse) position. If the
slide is stuck “after bottom,” place the
switch in the FWD (Forward) position.
3. Turn ON the air supply to the press. Then adjust the
clutch air pressure regulator to apply full line air
pressure to the clutch.
4. Set the SPEED, SLOW-FAST speed control (if
applicable) to maximum speed.
5. Place the POWER, OFF-ON-BAR Selector Switch
in the ON position.
6. Start the main drive motor and place the Stroking
Selector Switch in the INCH position. Then inter-
mittently depress the INCH buttons and inch the
slide off the bottom of the stroke. If the slide does
not move after several (4 to 6) attempts, clutch
bumping arrangement method (if provided) will
have to be used. Continued inching with the slide
“stuck on bottom” may result in damage to the
clutch/brake unit.
WARNING
MAKE CERTAIN THAT ALL PERSONS AVOID ANY
PINCHING POINTS ASSOCIATED WITH THE OPER-
ATION OF THE PRESS AND/OR ITS AUXILIARY
EQUIPMENT.
7. Stop the main drive motor and place the Stroking
Selector Switch in the OFF position.
8. Place the POWER, OFF-ON-BAR Selector Switch
in the OFF position.
9. Set the SPEED, SLOW-FAST speed control (if
applicable) to a moderate speed.
10. Adjust the air pressure regulators for proper air
pressure to the counterbalance cylinder (if appli-
cable) and the clutch.
Using The (Optional) Clutch
Bumping Arrangement To Free A “Stuck
On Bottom” Press:
(Flywheel Press only)
1. Stop the main drive motor and place the Stroking
Selector Switch in the OFF position. Make certain
the flywheel has stopped turning completely. Attach
a WARNING sign to the press controls to warn other
personnel that the press is currently being serviced.
2. Place the POWER, OFF-ON-BAR Selector Switch
in the OFF position and lock the disconnect switch
in the OFF position.
3. Shut OFF the air supply to the press.
4. Remove the hub cover from the flywheel cover to
obtain access to the bumping hole in the flywheel.
NOTE: It may be necessary to remove the entire
flywheel cover.
G - 2
SERVICING THE FRAME AND
DRIVE ASSEMBLY
!