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Thread: Gantry building calculations

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  1. 01-29-2014, 03:00 AM #1
    tjthe1st
    tjthe1st is offline Registered
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    Gantry building calculations

    Gday all.

    I'm in the process of designing a CNC router / milling table. I'm looking at using aluminium extrusions and while I think I can manage the calculations for the vertical deflection, I would appreciate a bit of help with the horizontal.

    My question is how do you estimate the forces in the horizontal plane. I would think there would be resistance to the routers passage through the wood as well as the force involved in changing direction. Can anyone suggest some assumptions for calculating these?

    Alternatively, are there some rules of thumb for extrusion sizes in relation to x y z span size?

    Cheers.
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  2. 01-31-2014, 03:44 AM #2
    tjthe1st
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    Anybody?
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  3. 01-31-2014, 05:49 PM #3
    ger21
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    Acceleration plus cutting forces. For a wood router, 30-50 lbs should be the max cutting force you'd ever see.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
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  4. 02-01-2014, 02:01 AM #4
    tjthe1st
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    Thanks very much ger21
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