Y axis dosen't go straight

New Home Forum LowRider Troubleshooting – LowRider Y axis dosen't go straight

This topic contains 10 replies, has 4 voices, and was last updated by  parkjh 3 weeks ago.

Viewing 11 posts - 1 through 11 (of 11 total)
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  • #101330

    parkjh
    Participant

    my LR2 can’t go straight on the y-axis.

    In case of load, the gap with the table will be tilted to one side.
    no-load conditions, it goes straight.
    gap

    Another problem is that the belt touches the pipe.
    tube-belt
    pulley

    #101352

    Greg
    Participant

    I ran into the same thing with the belt rubbing and made some clips to offset the belt:

    https://www.thingiverse.com/Tailslide/collections/low-rider-cnc-v2

    You might also want to check if each wheel is parallel to the other wheel on the same side.  There is a brace I made above to adjust them parallel since the plate seems to flex under load. I eventually also had to route a groove for the wheels to run in so the carriage doesn’t migrate over to one side of the table.

    #101359

    Ryan
    Keymaster

    I am not understanding how or why your belts are rubbing? Using my belt holders? Can you get some pictures of them and maybe the Y stepper assembly.

    #101364

    parkjh
    Participant

    I already use your clips.

    but using a clip, the belt will look like a ‘W’

     

     

     

    #101365

    parkjh
    Participant

    I am not understanding how or why your belts are rubbing? Using my belt holders? Can you get some pictures of them and maybe the Y stepper assembly.

    KakaoTalk_20190524_014051460
    KakaoTalk_20190524_014046929
    KakaoTalk_20190524_014049608

    This is the only picture I have right now.

    I’ll upload other pictures tomorrow.
    #101374

    kd2018
    Participant

    In regard to the belts touching the z tubes: An obvious question is are you positive the sides are straight and without any bow? And are both sides parallel to each other?

    #101670

    parkjh
    Participant

    In regard to the belts touching the z tubes: An obvious question is are you positive the sides are straight and without any bow? And are both sides parallel to each other?

    I used a steel ruler to check if there was any bowing, but I couldn’t find any bow
    And it was parallel (within 0.5mm).
    But the wheels weren’t quite parallel.
    (Maybe it’s because there is no wheel spacer.)
    #101671

    parkjh
    Participant
    #101695

    Ryan
    Keymaster

    What sized idlers did you use?

    #101696

    Ryan
    Keymaster

    Are the M5 nuts hitting the top, flip them over if they are.

    #101704

    parkjh
    Participant

    I use 20t idlers(diameter is 12.3 mm.) and M5 nut doesn’t hit the top.

     

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