YAMAHA-YG系列 换螺杆指导书.pdf - 第4页
Service Engineer Service I nformati on SI080 2008 E-000 = YG series: Replacement proc edure for ball screws of each axis 4/65 1.2. How to r emove the ball screw of X-axis Caution: As som e rem oved parts may contain shim…
Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
3/65
1. How to replace a ball screw of X-axis
<Overview>
Though the component parts that make up the ball screw Assy. vary depends on the models, there are
three main types of them.
This document describes the replacement method of the ball screws by dividing them into three types
depends on the models as follows:
- YGD
- YG88, YG100, YG200 (L), YG300
- YG88R, YG100R
Required tools
- Phillips-head screw driver (Standard type)
- Hex wrench set
- Special T-shape hex wrench (Size 5) or ratchet wrench set
- Nipper
- Some cable ties (150mm, 250mm)
- Marker pen (Used after checking if the screws are tightened properly)
- New ball screw for X-axis (Sub-Assy. Part)
1.1. Work to be done before replacement
The coordinates of the machine deviate due to the replacement of the parts. Therefore, some works
need to be done in order to restore the coordinates in the simple method.
Also, in case the ball screw is broken or the problem such as seizure occurs, the works before the
replacement cannot be performed and various adjustments need to be performed.
Caution:
Please make sure to do the necessary work before replacement. Otherwise, you will need to perform
all the adjustment, which requires a great deal of time later on.
<Works to be done>
- Check the machine reference of each axis
- Set the reference coordinate before replacing the ball screw.
* Please refer to the relevant section in “5. Adjustment”.
Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
4/65
1.2. How to remove the ball screw of X-axis
Caution:
As some removed parts may contain shims, please be careful not to lose them. Also, please note
down the places where the shims were set.
Figure 1
YGD & Xg
YG100
YG88
YG200(L)
YG300
YG100R & YG88R
Service Engineer
Service Information
SI0802008E-000= YG series: Replacement procedure for ball screws of each axis
5/65
1. Remove the bolts that secure the SLEEVE BRG.
When removing the ball screw of YGD,YG88, YG100, YG200(L) and YG300 machines
1) Remove the four bolts (M5*14) that secure the SLEEVE BRG.
(YG88,YG100, YG200(L) and YG300:No.15 / YGD: No.37 in Figure 1).
Figure 2
2) Remove the fixing bolts that secure the DAMPER with a hex wrench (Size 3) and remove the
DAMPER.
3) Remove the bolts to fix the COVER, BRG with a hex wrench (Size 3) and remove the
COVER, BRG.
4) Remove the SLEEVE, BRG.
* When the SLEEVE, BRG cannot be removed because of the cable duct, remove the bolts
that secure the stay plate and move the plate to the position where the SLEEVE, BRG can be
removed.
.
Figure 3
Sleeve BRG
Four bolts for fixing
the SLEEVE BTG
Bolts for fixing the
SLEEVE, BRG
(Qty:4)
SLEEVE, BRG
Square nut
BRG, ANGULAR
HOLDER, BRG X
Nut bearing (SCREW BALL X AXIS)
BOLT HEX, SOCKET HEAD
DAMPER
Bolts for fixing the
DAMPER(Qty:2)
DAMPER
Bolts for fixing the COVER, BRG (Qty:4)
COVER, BRG