YAMAHA-YG系列 换螺杆指导书.pdf - 第22页

Service Engineer Service I nformati on SI080 2008 E-000 = YG series: Replacement proc edure for ball screws of each axis 22/65  Wh en mountin g the ball screw of YG88R, YG 100R, YG200, YG200L and YG300 models. 5. Assem …

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Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
21/65
When mounting the ball screw of YGD, YG88 and YG100 models.
3. Insert the HOUSING BRG. Y into the HOLDER BRG. Y, and fix the HOUSING BRG Y
temporarily with the four fixing bolts (M5*14).
Figure 26
4. Temporarily tighten the six bolts (M4*30) of the coil springs that pull the ball screw with fingers.
Figure 27
Caution:
If a shim plate was put between the HOLDER BRG Y and the Y-axis frame before replacement, put the
shim back to where it was when assembling them.
HOLDER, BRG. Y
Bolts to fix the holder (Qty:4)
SCREW BALL Y AXIS
SCREW BALL Y AXIS
HOLDER, BRG. Y
Bolts for the coil
springs of the
Y-axis ball screw
Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
22/65
When mounting the ball screw of YG88R, YG100R, YG200, YG200L and YG300 models.
5. Assemble the bearing on the dead-end side of the SCREW BALL Y AXIS.
1) Insert the dead-end side of the SCREW BALL Y AXIS into the bearing.
2) Tighten the LOCK NUT with a spanner while inserting a hex wrench into a hole (for
anti-rotation) on the SCREW BALL Y AXIS.
3) Tighten the set screw for anti-backlash on a corner of the LOCK NUT with a hex wrench.
Figure 28
* The following procedure is common to all the models.
6. Temporarily tighten one of the two bolts at the slotted part of the coupling on the ball screw side.
Figure 29
Setscrew for fixing the LOCK NUT
LOCK NUT
HOLDER, BRG. Y
*Please do not remove this part.
SCREW BALL Y AXIS
FRAME R, Y AXIS
Hex wrench (Size 3)
SCREW BALL Y AXIS
Coupling
Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
23/65
2.4. Centering of the Y-axis
2.4.1. How to perform centering of the Y-axis ball screw [Common to both Y1 and Y2-axis]
* The following procedures are common to all the models.
Note:
Please perform centering with reference to the height of the center of the ball screw on the motor side.
1. Set the tool (plate) for centering to the GUIDE SET and attach a dial gauge on the tool.
2. Put the dial gauge at the point near the SUPPORT UNIT on the ball screw, then perform zero
setting.
3. Put the dial gauge at the point near the HOLDER BRG. Y. Then adjust the height of the HOLDER
BRG. Y by putting shims so that the dial gauge indicates 0 and temporarily tighten the fixing bolts.
Figure 30
4. Put the dial gauge at the point near the SUPPORT UNIT on the ball screw, and perform zero
setting.
5. Put the dial gauge on the point near the HOLDER BRG. Y on the ball screw, and adjust the
position of the HOLDER BRG. Y by moving it from side to side until the dial gauge indicates 0, then
temporarily tighten the fixing bolts.
Figure 31
6. Repeat the procedure from 2 through 5 to adjust the deviation of the center of the ball screw so
that it falls within +-0.01mm. Then fully tighten the bolts.