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Y-Motors don't move the same distance

Discussion in 'CNC Mills/Routers' started by Keith Kimura, Apr 17, 2024.

  1. Keith Kimura

    Builder

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    I have a Workbee 1010 with Black Box 32. When moving the Y-Axis 10mm one motor moves 10mm while the other moves 11.2mm. What should I investigate to fix this?
     
  2. Peter Van Der Walt

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

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    Most likely something mechanical. Loose setscrews on shaft coupler, loose stop collar, etc
    Perhaps one side binds a little, or stalls. OpenBuilds Motors (or high inductance 3rd party motors?)

    The two Y motors get the same amount of steps. Check your steps per mm, should be around 199-200 steps per mm (our 8mm Leadscrews)
     
  3. Keith Kimura

    Builder

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    Thank you Peter, I'll recheck all of the mechanical connections, although I've done this dozens of times already. The motors are Openbuilds high-torque. Unfortunately the lead screws are not Openbuilds. I purchased a Linear Rail kit from SPAM-3D and have had nothing but problems with this rebuild. My CNC has been out of operation for almost a year due to the lack of support from them when they shipped wrong or defective parts (from China). Lesson learned here - I'll have to live with it and keep working on it. If anyone is considering this mod I don't recommend SPAM-3D; very costly experience. Every encounter with Openbuilds for all the other parts and info has been top-notch - much appreciated.
     
    Peter Van Der Walt likes this.
  4. Peter Van Der Walt

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

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    Could take them out, lay them side by side and see if the helixes line up - might be rolled out of spec (replacements needed)
     
    David the swarfer likes this.

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