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Acme block offset?

Discussion in 'CNC Mills/Routers' started by MarkM_NJ, Jan 20, 2018.

  1. MarkM_NJ

    MarkM_NJ Journeyman
    Builder

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    Hello,
    I'm working on my gantry plates. I'm using regular size v-wheel on top, and mini v-wheel on bottom. I'm using 96mm offset for the wheels. I'm placing my acme block in the center of my wheel offset (48), but its not lining up with c-beam end plates. Am i over looking something?

    Thanks,
    Mark

    (outside measurements are center of c-beam)
    lead_offset_2.jpg
     
  2. Scotty Orr

    Scotty Orr Master
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    The center of your mini v-wheel is closer to the c-beam than the center of the v-wheel.
     
  3. MarkM_NJ

    MarkM_NJ Journeyman
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    Hi Scotty,
    Would that mean that I shouldn't center my acme block to the center of my wheel offsets? Say if i was using both standard v-wheels, my offset would be 100 so the center of my acme block would be 50mm, so go with 50mm?
     
  4. Rick 2.0

    Rick 2.0 OpenBuilds Team
    Staff Member Moderator Resident Builder Builder

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    The drawing in your original post shows the answer. The screw is centered on the channel which would be roughly 46mm from the bottom wheels and 50mm from the top wheels.
     
  5. MarkM_NJ

    MarkM_NJ Journeyman
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    Thanks Rick,
    It was staring at me right in the face lol.. Don't know why I was overthinking it.
     

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