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Thread: Ball Screw problem
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12th Jun 2016, 02:12 PM #1Diamond Member
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Ball Screw problem
I bought a X6-1500GT cnc router 2 years ago and have recently developed a problem with the y axis ball screw.
I is free in one direction but it binds in the other direction.
I have ordered a new one but will pull the old one down to try and find the cause of the problem.
Has anyone come across this sort of problem before?
Steve
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13th Jun 2016, 02:44 PM #2
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13th Jun 2016, 02:47 PM #3Diamond Member
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Its the Ball Screw. I pulled it out of the machine.
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13th Jun 2016, 03:09 PM #4
Only at one spot, or does it bind in all positions along the length?
Ray
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13th Jun 2016, 05:10 PM #5Diamond Member
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It appears to be binding along the whole length as the stepper motor looses steps along the whole length.
Its too hard to wind the ball nut, by hand, for the whole 700 mm...lol
Steve
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13th Jun 2016, 05:32 PM #6
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13th Jun 2016, 05:52 PM #7Diamond Member
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I have not removed the screw nut as i wanted to find a replacement. One is on its way so when I get a chance ( Im on the road atm ) I will pull it down and post some photos.
Weird that the balls only like moving one way. ....maybe some swarf has been drawn inside...somehow....
Steve
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14th Jun 2016, 05:45 PM #8Senior Member
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certainly sounds like something has managed to find its way inside the ball nut.
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14th Jun 2016, 09:57 PM #9Diamond Member
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I pulled the nut off today. ( of course, I lost a couple of balls...grrr....I have 46. I guess I am supposed to have 48 ish ...3 rows of balls..)
I cannot really see a problem although I don't know what I'm looking at. No swarf or bits of metal came out.
It seems a bit dodgy inside the nut but maybe that's how they are supposed to be...lol
I think its going to be a nightmare trying to get them back in...even with a mag lamp......
The balls are 3.18 mm ( 1/8" , so I can get some more. )
20160614_130102 (Small).jpg20160614_130107 (Small).jpg20160614_130123 (Small).jpg
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15th Jun 2016, 01:00 AM #10
I wouldn't bother putting them back... it's a bit hard to see but that thread looks pretty bad. It should be a smooth track all the way through.
Ray
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20th Jun 2016, 09:45 PM #11Diamond Member
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My new Ball Screw arrived today.
Good news...Its the right one.....lol
The nut itself looks a little different, so maybe they have changed it for a better design.
The screws appear to have the same finish so I guess the old screw may be ok for a spare, if I need it.
20160620_155553 (Small).jpg20160620_155559 (Small).jpg
Now to find the time to re-install it and ensure it runs smoothly.
Steve
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22nd Jun 2016, 09:24 PM #12Senior Member
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22nd Jun 2016, 09:51 PM #13Diamond Member
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