Minster IOI, Service Manual

Page: 56 / 92

10. Attach magnetic base dial indicator to the bottom
of the slide. Position the dial indicator so that its
spindle contact point is perpendicular to, and rest-
ing against, the flat inner surface of the square.
(See Figure 3F.)
11. Start the main drive motor. Place the Stroking
Selector Switch in the INCH position. Then INCH
the slide through one complete stroke. Throughout
the last third of the downward stroke, observe
reading on the dial indicator (See example
below). Note the maximum and minimum reading.
This test will measure the amount of front-to-back
vertical runout, if any.
EXAMPLE: If the above measurement is being
performed on a press with a 6.00”
stroke, the last third of the downward
stroke would be the last 2.00” of travel.
WARNING
MAKE CERTAIN THAT ALL PERSONS AVOID ANY
PINCHING POINTS ASSOCIATED WITH THE OPER-
ATION OF THE PRESS AND/OR ITS AUXILIARY
EQUIPMENT.
12. Reposition machinists square so that its base leg is
parallel to the front edge of the bed (or bolster).
Reposition the dial indicator on the slide so that its
spindle is perpendicular to, and resting against, the
flat inner surface of the square. (See Figure 4F.)
13. INCH the slide through one complete stroke.
Throughout the last third of the downward stroke,
observe reading on the dial indicator (See exam-
ple below). Note the maximum and minimum
reading. This test will measure the amount of slide
right-to-left vertical runout, if any.
EXAMPLE: If the above measurement is being
performed on a press with a 6.00”
stroke, the last third of the downward
stroke would be the last 2.00” of travel.
WARNING
MAKE CERTAIN THAT ALL PERSONS AVOID ANY
PINCHING POINTS ASSOCIATED WITH THE OPER-
ATION OF THE PRESS AND/OR ITS AUXILIARY
EQUIPMENT.
14. Stop the main drive motor. Place the Stroking
Selector Switch in the OFF position. Place the
POWER, OFF-ON-BAR Selector Switch in the
OFF position.
If the above tests indicate that slide is moving off verti-
cal in either direction greater than the tolerances listed
in the chart below, vertical angularity is not satisfactory
and must be corrected — usually by adjusting the gibs.
See chart entitled “Factors Affecting Parallelism And
Vertical Movement,” page F-11. Note possible causes
and the corrective action to be taken.
CALIBRATION OF
THE SHUTHEIGHT INDICATOR
(Ref. Figure 5F)
The optional shutheight indicator is a digital counter
which is built into the slide assembly. It is connected
directly to the slide adjustment mechanism through a
gear train. The shutheight indicator displays a reading
indicating the relative distance between the slide face
and bed (or bolster) with the stroke down. The reading
is displayed on the indicator in inches and thousandths
of an inch or millimeters and hundredths of a millimeter.
Because of the positive type drive, the indicator should
retain its accuracy for a considerable period of time.
However, due to wear and/or certain adjustments in the
press, the shutheight should be measured periodically
and the meter must be recalibrated, if necessary.
Recalibration will also be necessary if the slide or any
part of the slide adjusting mechanism is disassembled.
F - 5
!
Figure 4F. Checking slide right-to-left vertical angularity.
!
STROKE LENGTH
MAX. VERTICAL ANGULARITY
(LAST 1/3 OF STROKE)
2.00” .00027”
3.00” .0004”
4.00” .00053”
5.00” .00067”
6.00” .0008”