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Thread: Spring loading rack and pinion?

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  1. 03-16-2009, 02:56 AM #1
    flash319
    flash319 is offline Registered
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    Spring loading rack and pinion?

    May be a stupid question but I work in the automation industry and have yet to see a spring loaded pinion running on a rack. I find many machines on here that have this feature?? Why do people do this on DIY machines? Is it because of alignment issues? Is it a protection device? Why not just have an adjustment for the gear pre-load?
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  2. 03-16-2009, 11:25 AM #2
    ZNAK
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    in my case it is because of alignment issues))
    + you get no backlash
    + less load on stepper -> you can go faster and more stable at high speed.
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  3. 03-16-2009, 02:07 PM #3
    ger21
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    Even though the spring is probably not the best method, it's the easiest.
    Gerry

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

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    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. 03-16-2009, 02:52 PM #4
    ZNAK
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    serious routers i think dont use springs, but for hobby it is ok!
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  5. 03-17-2009, 12:57 PM #5
    keyancnc
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    Rack&pinion

    According to me,not only the alignment problem but also to self compensating the wear.But i think that during heavy load pinion may loose some steps.
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