1. #1
    I am in the middle of my second build. Iím going for a long Z axis 500mm. 1500 x 1500 table. The z axis is getting pretty heavy. (might start a build log)

    I bought 4:1 HTD reduction belt and pulleys to give the Nema 24 566oz in a bit of extra torque to assist the Z. The X, A and Y also have 4:1 HTD reduction units. However I now realise iím slowing the whole feeds and speeds down with reduction on the Z. The first machine was 1:1 throught

    Just looking for suggestions about other solutions before make up the nema bracket and fitting it today.

    Thanks

    ps got the 2DM556 drivers set on 3.8 Amps Half Current 1/10th Microstep for the 4Nm steppers perhaps could change the these settings

  2. #2
    Ger21's Avatar
    Lives in Detroit, United States. Last Activity: 4 Hours Ago Has been a member for 6-7 years. Has a total post count of 614. Received thanks 84 times, giving thanks to others 0 times. Referred 1 members to the community.
    What are you using to move the Z axis? Ballscrew? What pitch? How much weight are we talking about?
    Gerry
    ______________________________________________
    UCCNC 2017 Screenset

    Mach3 2010 Screenset

    JointCAM - CAM for Woodworking Joints

  3. #3
    Quote Originally Posted by Ger21 View Post
    What are you using to move the Z axis? Ballscrew? What pitch? How much weight are we talking about?
    RM1605 C7 650mm ballscrew
    700x150x12.7 alu plate for the Z travel
    HG20 rails mounted on that plate
    2.2kw air spindle
    approx total weight for travel plate, rails and spindle 12kg

    pic without guide blocks or travel plate
    Click image for larger version. 

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  4. #4
    Ger21's Avatar
    Lives in Detroit, United States. Last Activity: 4 Hours Ago Has been a member for 6-7 years. Has a total post count of 614. Received thanks 84 times, giving thanks to others 0 times. Referred 1 members to the community.
    I'd use 1:1
    Gerry
    ______________________________________________
    UCCNC 2017 Screenset

    Mach3 2010 Screenset

    JointCAM - CAM for Woodworking Joints

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