Harig AUTOMATIC PLC, Руководство пользователя

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arped or the column uprights have moved closer together by a
w tenths. If the spindle housing is tight in only a small area, scrape the back ways of the
to the bottom
osition and push the housing just far enough away from the column to inspect the 45-degree
o
s of the back plate that ride on the back column ways. Accurately check the step between
e way surface of the back plate and the center part that is screwed to the spindle housing before
d response is less than .001”, the spindle housing assembly may be too
ose in the column ways. Remove the motor spindle assembly and dust guards as outlined in
the amount of looseness by placing an indicator on the grinder
s
If the column way surfaces are clean and smooth and the spindle assembly is still sticking, either
the spindle slide back plate has w
fe
column to remove the high spot. Applying a thin layer of red lead or blueing to the ways and
running the housing assembly up and down can find the high areas of the ways.
If the assembly is tight over the entire column, remove the back plate from the spindle housing
by taking out the six 5/16” screws holding it in place. Crank the spindle housing
p
ways.
If there is no evidence of scoring or a piece of grit lodged in the casting, grind .0003” off the tw
surface
th
grinding the way surface, so the entire back plate can be reground if found to be warped.
Reassemble the back plate to the spindle housing. If still too tight, remove an additional .0003”
from the way surface.
D. Spindle housing too loose.
If the error in down fee
lo
the previous section. Determine
table to read against the part of the spindle housing projecting to the front of the grinder. With
the column ways wiped clean of oil, alternately twist the spindle housing from one side to the
other. The difference on the indicator reading when the twisting pressure is released should be
less than .0005”. Make this check at both the top and bottom positions of the spindle housing, a
well as in the middle, and use the lowest reading. Remove the back plate from the spindle
housing. Then remove 3/4 of the difference between the “at rest” indicator readings from the
center area of the back plate that is clamped against the spindle housing. For example, if .0012”
slack is found, remove .0009” from the center area of the plate.
7. IMPROPER LONGITUDINAL FEED
A. Table runs slow or stops.
See that the hydraulic pump is running in the direction indicated by the arrow on the motor. If
e motor is turning in the wrong direction, check to make sure the spindle motor is turning in
erse any two of the line wire connections to the machine. If the
hine
e speed control valve. The pressure should be
e7 250 PSI.
th
the proper direction. If not, rev
pump motor is turning in the correct direction, make certain the speed control valves are open
and the table drive hand wheel is pulled all the way out. If the table still will not start, the
following checks may be used to determine the problem.
If the machine had just been set up, check the hose connections to the pump and to the mac
to make sure that they are connected properly.
Check the hydraulic pressure by opening the control valve next to the gauge while the pump is
running. Start the table, and then close the tabl
b
NOTE:
Gauge should be turned off when not in use.
If the pressure is too low, adjust accordingly. If the pressure is correct, remove the screw on the
move while the plunger is depressed. end of one solenoid and move plunger. The table should