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Backlash in the leadscrew nut

Discussion in 'General Talk' started by Adam Roberts, Jun 19, 2015.

  1. Adam Roberts

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  2. Ronald van Arkel

    Staff Member Resident Builder Builder

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    Hello Adam,

    Hard to answer your question, how precise do you want it to be? I can tell that you can feel the play it has if you use one nut-block, with 2 nut-blocks the play is almost gone when installed right. When using the Acme in a CNC setup you won't see much of the precision loss. How much backlash does your design accept?

    -Ronald
     
  3. Adam Roberts

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    I will be using the leadscrews for a 3d printer, I wanted to try to use the leadscrews for the x/y axis compared to the typical belt driven way to see if it would be any more precise. Would using two nut blocks tensioned properly be the best way?
     
  4. Ronald van Arkel

    Staff Member Resident Builder Builder

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    Personally I would like to see something different than a belt-drive for a 3D printer but I believe that you are better of using a belt and just NEMA17 motors; there are only disadvantages by using an Acme over a belt-drive in this case. But yes, if one must use an Acme system then it would be wise to use 2 blocks instead of one; I've been thinking about making one springloaded (adjustable) but it's still in my head and not on "paper".

    -Ronald
     
  5. Adam Roberts

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    Can we talk about leadscrew vs belt drive a bit more?

    I'm expecting the leadscrew to be slower, and backlash is a problem compared with belt drive.
    However, done properly shouldn't a leadscrew be able to achieve better precision than belt drive?

    As an aside, what exactly does acme mean for an acme leadscrew?
     
  6. Mark Carew

    Mark Carew OpenBuilds Team
    Staff Member Moderator Resident Builder Project Maker Builder

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