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HM 1000/1250
2) Y – Z squareness
ⓐ Measure
Place the square on the pallet deck in the Z-axis direction and install the indicator on
the spindle head. Check the squareness between Y and Z axes. The greatest
difference is the measurement.
▪ How to measure : As shown below, set both ⓑ and ⓒ to "0" and calculate "ⓑⓐ"
▪ Tolerance: 0.01mm/300mm
c
d
ⓑ Correction
The Y-Z squareness should have the same result as specified by factory default if
the level is correct. If you fail to correct the squareness even after the leveling,
perform the scraping of the sliding plate on the bottom of the column.
※ To perform the scraping of the sliding plate
▪ Preparations: Scraper, whetstone, minium, screw jack (x2), cloth, other repair tools
(1) Unplug the cable that supplies power to the lubricant motor from the electric cabinet
to block lubricant inflow.
※ turn off the power and unplug the secondary U51 and V51 wires from the
terminal block.
(2) Remove the front sliding cover and rear cover from the Z axis.
(3) Loosen the ball screw nut fixing bolts on the rear of the column.
(4) Remove the front and rear wiper plates from the column.
(5) Remove the back plate from the column.
(6) Install two screw jacks on the lubricant passage in the side of the column bed, one
for each back plate place in the rear column. Then, lift up the column slide plate so
that you can remove it.
※ Insert a thin metal plate between screw jack and back plate to prevent scratches.
(7) Insert the bolt (BB 12×100) in the middle of the sliding plate and use the bolt as a
handle to remove the sliding plate from under the column. (one more in the rear)
54
and "ⓒ－ⓓ". If ⓐ and ⓓ are the same symbol (+/-), add "ⓑ－
ⓐ" to "ⓒ－ⓓ", if not, deduct the smaller measurement from the
greater one.
a
b
HM1000ISE99
Z axis
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