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Movement is choppy but accurate

Discussion in 'CNC Mills/Routers' started by WoodworkerSD, May 17, 2024.

  1. WoodworkerSD

    Builder

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    My Lead CNC doesn't run smoothly when it is going in a circular (not straight path). I have attached a video to demonstrate what I am seeing. The cuts are still accurate but the machine slows down the cut. I am not sure if it is a problem with wiring, if it isn't running through the gcode fast enough or if the actual machine is out of alignment. If you have any ideas please let me know. Again the cuts are still accurate so I am making it work, it just slows everything down and is just concerning.
     

    Attached Files:

  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    Could be a couple things
    1) Gcode for review
    2) Check that leadscrew is still tensioned (no axial play between leadscrew and endplates)
    3) Check shaft couplers - not slipping on leadscrews? Check grubscrews tight and on the flat of the motor shaft
    4) Do a couple cuts like circle-diamond-square tests
     
  3. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

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    only jerking in Y- direction as far as i can see, other curves are just fine
     

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