Doosan DBC 130 II, Installation Manual

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DBC 130II DBC130II ISE41
15.3 Straightness of Y Axis
1) X - Y
ⓐ
Measure
Install the square vertically on the pallet
deck in the X-axis direction and install the
indicator on the spindle head. Move the Y
axis to measure the parallelism. Set both
ends of the square to “0” and check the
measurement in the middle of the square.
▪
Measuring point
: both ends and center of square
▪
Tolerance: 0.01mm / 500mm
ⓑ
Correct
Correction is not possible as the squareness is attributed to the physical column
sliding side. However, correction is necessary as the gap of the gib in the Y axis may
have a problem or the ball screw nut in the Y axis may be improperly aligned.
▪
Adjusting the Y-axis gib
(1) Loosen the bolts on the reference gib in the front and lower of the spindle head.
(2) Loosen the set-screw (BQ bolt) of the gib-adjusting bolts completely.
(3) Slowly tighten the BB bolt (one of the gib adjusting bolts) at first. Then tighten it up
when you feel that the gib gets tightened. (this is where the gap between gib and
column sliding side becomes "0")
(4) Then, loosen the bolt (BB bolt) by a half turn (180
˚).
(5) Tighten back the set-screw (BQ bolt) and pull out the gib as much as you have
loosened the BB bolt (180
˚).
(6) Adjust the upper and lower gibs as well as the other gibs in the same way.
▪
It is recommended to adjust the back plate gib just after performing the clamping of
the Y axis.
▪
Aligning the ball screw nut
(1) Move the Y axis to "0".
(2) Loosen all fixing bolts on the ball screw nut.
(3) Slightly tighten the bolts diagonally one by one at first, and then tighten them up by
applying force as evenly as possible to each of them.
Y axis
Indicator
Square