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Thread: problems with the Y axis

  1. #41
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    Quote Originally Posted by DickB View Post
    I guess I was letting my own experience influence here. I would check the board tracking encoder first, then the motor encoder.
    I just meat that I misinterpreted what you were saying. I do not think I have ever heard of the x motor encoder being a problem. The tracking encoder, however, has been.

  2. Default

    I checked and double checked the sandpaper belts and they are 100% fine. The tracking sensor never leaves the board. The big plastic X drive gear may be causing the problem but I am not sure. When turning it back and forth by hand it will slip one or two teeth but the there are no teeth missing and they are not worn down. Maybe I should get another whole x drive assembly or somehow adjust this one to sit tighter against the shaft coming from the motor? Any other recommendations before ordering another one? Thanks for the help everyone

  3. #43
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    It just might be a slip in the X drive motor. There is a small amount of adjustment in the X motor to insure it is mating up good to the drive gear.

    The attached picture shows the most common gear that strips out. Make sure you inspect yours for any wear.
    Attached Thumbnails Attached Thumbnails Levering X gear 1.jpg  
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  4. #44
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    Quote Originally Posted by Robkjv1611 View Post
    I checked and double checked the sandpaper belts and they are 100% fine. The tracking sensor never leaves the board. The big plastic X drive gear may be causing the problem but I am not sure. When turning it back and forth by hand it will slip one or two teeth but the there are no teeth missing and they are not worn down. Maybe I should get another whole x drive assembly or somehow adjust this one to sit tighter against the shaft coming from the motor? Any other recommendations before ordering another one? Thanks for the help everyone
    Are you saying that the big, fine tooth gear is slipping on the small motor gear? Is the motor loose? There is not much there for adjustment. Maybe loosen all the relevant screws and retighten as you push the gears together.

  5. #45
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    Sounds like a broken off tooth is causing this.... A careful inspection of all gears is in order.... Or in your case a re check....

    AL
    Attached Thumbnails Attached Thumbnails DSC05774_WEB.jpg   DSC05673_WEB.jpg   DSC05672_WEB.jpg   DSC05691_WEB.jpg  

    DSC05680_WEB.jpg   DSC05679_WEB.jpg   DSC05692_WEB.jpg  
    Favorite Saying.... "It's ALL About the Brass Roller"..... And "Use MASKING TAPE" for board skipping in the X or breaking bits.

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  6. Default

    Quote Originally Posted by bergerud View Post
    Are you saying that the big, fine tooth gear is slipping on the small motor gear? Is the motor loose?
    Yes, the big fine tooth has a bit of a slip and no the motor is not loose. I took the x drive plate with the gears off for a closer inspection, there were no missing teeth and everything seemed fine but when I put it back in, it did the same thing. Would this small skip in this gear be the cause of this?
    Click image for larger version. 

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  7. #47
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    I would think it could certainly be the cause of your problems.

    I cannot understand how it could be slipping. It does not seem possible on my machines. Is the bushing worn out? Is the gear plate a defective part? Just why are the gears not meshed close enough not to slip? You have to dig deeper and find out why.

  8. #48
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    Since the Gears checked out OK... Then we are back to the board loosing contact with the Brass Roller..... The Ripping of the Sand Paper Belt is in order... I know you are dissmissing this as a problem... BUT... from the years of use and if you look at the various dates on all the pictures I posted.... I have been down this road a few times... It was not until I ripped my first belt that looked GOOD... that I saw the Rolled Under part at the Brass Roller.... And know that "IF" the belt is in fact rolled under.... That at some time the rolled under belt will jam in the sand paper guide and cause the X Gears to SNAP... Yes, more than one Snapped Gear shown in the pictures were the result of a jammed rolled under belt.... I has been a very long time since I have seen a broken gear... Mostly since I now rip the belts... And know that the Rolled Under Belt is lifting the board UP by the thickness of the Paper folded over and that is why the cut is OFF JUST LIKE MY CLOCK PICTURE..... I have been their... and done that....

    I will quit harping about this.... I will watch to hear the resut of finding the actual problem....

    And to review.... Things to check...

    Sand Paper Belt Rolled Under.

    Little Rubber spacer UNDER the Brass Roller was sucked up by a vacuum.

    Board Project designed with the BOARD only being held under ONE roller at ONE or BOTH ends of the project and failure to support the board and letting it tip UP a fraction of a inch and loose contact with the brass roller by 1/4 inch in X.... THREE OR FOUR Times.....

    HIGH In or Out Feed table..

    OK... OFF my Soap Box... I will check back in a dozen more posts of things to check by other users and see if it is fixed....

    AL
    Favorite Saying.... "It's ALL About the Brass Roller"..... And "Use MASKING TAPE" for board skipping in the X or breaking bits.

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  9. Default

    Sorry it took so long but just wanted to give a quick update. There were a couple teeth on the shaft of the x motor that were worn and only when under pressure would slip. By loosening the motor screws & pushing the motor tight against the x gear, then retightening I have been able to keep on using my machine without anymore trouble but I did order a new x motor and x drive plate which I just got and will put on after this gives out again. Thanks for all the recommendations.

  10. #50
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    Thanks for the update. Interesting problem. Glad you got it figured out.

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