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Lead screw whipping on LEAD CNC

Discussion in 'CNC Mills/Routers' started by jeffmorris, Jan 11, 2020.

  1. jeffmorris

    jeffmorris Well-Known
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    I found out that one of the lead screws on one of the Y-AXIS were whipping on my modified LEAD CNC. How can I fix this problem? I'm not sure if I can turn the end plates around so that the bearings and collars are outside because the lead screws are not long enough. I know that some people put 12mm lead screws on their machines but they had to make custom nut blocks.
     
  2. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    While whip is a natural part of the process it can be minimized by straightening and aligning the screws as much as possible. A general description of the process can be found here.
     
  3. Wallied

    Wallied New
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    The end plate switcheroo can be done by cutting your extrusions slightly shorter.
     
  4. jeffmorris

    jeffmorris Well-Known
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    Are there stores in USA that sell 1100mm Tr8*8-2p (4 starts) lead screws?
     
  5. Rick 2.0

    Rick 2.0 OpenBuilds Team
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  6. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Well, the Lead shouldnt suffer from whip, and its only one one axis you say? Sounds less like a whipping issue and more like a bent screw (;
     
  7. jeffmorris

    jeffmorris Well-Known
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    I think that OpenBuilds should sell longer lead screws so that the bearings and lock collars are outside the end plates.
     
  8. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    If you reach out to [email protected] you can order custom lengths
     
  9. jeffmorris

    jeffmorris Well-Known
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    Peter, I sent an E-Mail message to [email protected] asking them if I can order custom-length lead screws and they said no.
     

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  10. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    I did a quick doublecheck for you, to see why I remember they do:

    The DO do custom lengths, BUT the maximum length is 1040mm. You can order custom lengths, but has to be less than 1040mm. Good to know :) but yeah, then doesnt help you with your plan, sorry.

    Wallied has a interesting plan though (;
     
  11. jeffmorris

    jeffmorris Well-Known
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    I got an E-Mail from [email protected] saying:

    Hi Jeffrey,

    Thank you for your feedback. I will pass it on to our Building Team.

    Thank you for your support!

    Thank You,
     
  12. Christian James

    Christian James Well-Known
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    Have a look at my build log below and scroll down to "Lead-screw Mod and nut blocks", dunno if that helps?

    Workbee "style" 1010 cnc
     

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