X axis motor slipping

[Weber128]

My x axis motor keeps slipping I've tightened every set screw on there and still slips .5 every time I run it. I've done everything I can think of to fix it. I have a 4x8 classic bolt together accumove 3. 1.0.20 / classic. I've had this problem before with the y axis and was told to change the file to fix it. But that doesn't seem like a fix.. now it's happening on the x axis. So can the table not handled the quick movement in the file or is ther another issue?

 

[Matt]

Out of curiousity, how did you measure that it was slipping 1/2"? Showing up in the cut itself or you saw it pause or?

 

[Weber128]

I've been doing dry runs and datuming it after words and it's .5 to .6 off. I can hear the motor slipping on the shaft in the gear box. Almost sounds like a drill

 

[Matt]

I would imagine if you take it apart that you should see some wear on the shaft if that is the case

 

[Weber128]

Is that where you recommend I start? I don't really want to take anything apart without approval for warranty reasons

 

[Weber128]

So I pulled the gear from the x axis motor and and there was some slipping marks. so I pushed the gear back on and tightened everything. I tried it again and it did the same thing it seems to be anything over 200 ipm it slips in quick jaged movements. As soon as I dropped below that it was fine. Is this normal?

 

[LECS-Chad]

Classic? so first thing I would check is to make sure that the gear box and motor shaft are friends. So take the motor/gear box assy off and split the two and verify that the (2) compression rings inside the gear box that attach to the motor shaft are opposing. I've seen the compression rings get aligned and they don't hold the motor shaft tight even if you crank the set screw. Since you have the set screws out hit them with a little blue loctite to assure they don't walk out on you.

 

[Weber128]

What do you mean when you say compression rings? Is that the sleeve in the hub? Or do you have any pictures I could go off?

 

[Matt]

See the yellow box in the image. You can see the inner and outer rings are aligned in this image which is NOT what you want. Those need to be offset.

 

[Weber128]

I realigned the compression ring. But it didn't seem to fix it.

 

[Dnmeistr-LECS]

The slots should form a cross.