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Nema 23 Belt and Pinion System

Discussion in 'Other Builds' started by Mark Carew, Sep 5, 2018.

  1. Mark Carew

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

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    Mark Carew published a new build:

    Read more about this build...
     
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  2. GrayUK

    GrayUK Openbuilds Team Elder
    Staff Member Moderator Builder

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    I just thought, if you attach a saw blade to the aluminium and hold the motor somehow, Ta-da!! :thumbsup::D :jawdrop:
     
    Mark Carew likes this.
  3. Giarc

    Giarc OpenBuilds Team
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    Martini shaker...unless you prefer stirred.
     
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  4. Duncan Meyer

    Builder

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    Hi Mark,
    A newcomer to cnc machining here.

    I have a Lowrider2, and it is OK, but not very rigid. I would like to build something that is rigid but can handle full sheets of plywood (2480 x 1220) That is a big machine, but it seems to me that my limitation is only the X-axis.

    Question #1:
    Can one join C-channels? Sure, I know that the join will never be perfect, but for my purposes (plywood) a minor bump might be acceptable.

    Question #2:
    While your belt and pinion actuator is exactly what I'm looking for, I'm struggling to understand how to attach the Y-Z gantry (I refer to the short side as the Y-axis). I assume there are plates to attach the Y-axis C-channel to the system you have described?

    Regards,
    Duncan
     
  5. Giarc

    Giarc OpenBuilds Team
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    There are a couple of builds recently where people joined extrusions to make CCN routers for cutting full sheets of plywood. Here is one. Openbuilds 4x8 cnc

    Personally, if it were me I would do a double belted system where a piece of belt is glued into the channel of the extrusion and the belt that moves the gantry is pressed down into that belt so it acts like a rack and pinion system. This should help alleviate belt stretch and some backlash.
     
  6. JustinTime

    JustinTime Journeyman
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    The convention is that X0 and Y0 is at the bottom left of the machine where X goes left and right and Y goes forward and back. I would recommend that you make the Y axis the static one and the X axis the moving one.
    If I misunderstood what you've meant with "limitation is only the X-axis" than disregard my above runt. :D
     

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