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Rack and Pinion Cartesian Mill

Discussion in 'CNC Mills/Routers' started by Joe F, Nov 29, 2019.

  1. Joe F

    Joe F New
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    Joe F published a new build:

    Read more about this build...
     
  2. Mike Campbell

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    Hey Joe, just came across your build plan. I am currently working on a rack and pinion upgrade for a sphinx and hope to post it here early 2020.

    I've already prototyped 20 degree (pressure angle) 20 pitch racks for a couple of T-Slot builds now, and getting the design finalized for v slot rails to cut in the next couple of weeks. If you haven't ordered your parts yet I would be happy to help if possible.

    20191125_095204.jpg 20191127_123341.jpg
     

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    #2 Mike Campbell, Dec 17, 2019
    Last edited: Dec 17, 2019
  3. Joe F

    Joe F New
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    Hey Mike! That's really awesome to hear, unfortunately I already ordered a rack system from McMaster, I'll actually be doing a build update in the next few hours (rack's aren't installed yet though). I see you don't have a build in progress posted, but if you have pictures I'd love to see them, it looks like you may have tried but they're not working on my end. I'm not 100% confident in my mounting solution for the racks and I could always use them for something else if it doesn't work out, so if you've been developing a system for 2020 I'm excited to learn more. Let me know!

    Are you machining these racks yourself? What material and grade of material are you making these out of?

    Joe
     
  4. Mike Campbell

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    Yes I'm machining them. They are milled out of Delrin/Acytel sheet stock. Have just updated my reply to you so the pics ought to be there. My very first build post on this forum about the t-slot builds will be coming along with the sphinx upgrade plans early next year.
     
    #4 Mike Campbell, Dec 17, 2019
    Last edited: Dec 17, 2019
  5. Joe F

    Joe F New
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    Those are awesome, they look well done! I'm a bit nervous about how strong the teeth are near the screw holes, has that been an issue for you? What types of materials are milling with this set up? I'm curious to see how they hold up over time. Looking forward to seeing your build next year!
     

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