YAMAHA-YG系列换螺杆指导书.pdf - 第24页

Service Engineer Service I nformati on SI080 2008 E-000 = YG series: Replacement proc edure for ball screws of each axis 24/65 2.4.2. A djustment aft er replacing the ball screw The coordinates of the machine deviate due…

Service Engineer

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SI0802008E-000= YG series: Replacement procedure for ball screws of each axis

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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.

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SI0802008E-000= YG series: Replacement procedure for ball screws of each axis

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2.4.2. Adjustment after replacing the ball screw

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.

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.

• Adjust the machien reference.

• Adjust the Y2 dual offset

• Adjsut the reference coordinate after the replacement of the ball screw.

• Check the peak current (With the Servo utility).

* Please refer to the relevant section in “5. Adjustment”.

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

 Check if the bolts are tightened properly

1. Press the [Emergency stop] button and check the surrounding area for safety.

2. Check the bolts removed for replacement or loosened are tightened properly.

Check if the bolts are tightened with the appropriate hex wrench and make a mark on the

bolts with the marker pen.

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 Other items to be checked and done

1. Check if there are any tools used for replacement left in the machine.

2. Check if there are any pieces of cut off cable tie left in the machine.

3. Make sure that all the harnesses are secured properly, and no axes interfere with anything

when they move.

Caution:

Please do not use an air gun for cleaning inside the machine. The blown away dusts may stick to the

moving parts of the axes, which causes the serious problem to the machine.

4. Get ready for the production activity

Put back all the removed parts such as feeders and other supplying equipments to the

original position.

2.5. Necessary adjustment

Note:

Please refer to the relevant section in “YG300 CalibSm Adjustment Manual” for performing the

following adjustment.

• Check and adjust the soft limit of the Y-axis

• Check and adjust the coordinate of the ANC nozzle station.

• Check if the ANC consecutive nozzle change function works properly after adjusting the

coordinate of the nozzle station.

• Check and adjust the coordinate of the blow station.

* Please use an actual board and perform mounting test.

If the mounting accuracy is not enough, please perform FAMF adjustment.

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3. How to replace a ball screw of the PU-axis (Single, Double)

The design of the PU-axis for YG series machines varies depends on the model and the size of the

board.

The PU-axis motors of the YG100R (KHV) and YG88R(KHW) are equipped with intermidiate shaft.

The PU-axis motors of YG100(KGS), YG88(KGR) and YGD(KGM) are direct-drive, and the conveyor

width and the layout of the single and double PU-axis vary as shown in the figure below.

 The layout of the PU-axis for YG88 and YG100 models

Figure 32

KGS

M9210

000 (Single 440mm)

KGS

M9210

200 (Dou

ble 440mm)

KGS

M9210

500 (Single 280mm)

KGS

M9210

400 (Double 280mm)

KGS

M9210

100 (Single 330mm)

KGS

M9210

300 (Double 330mm)