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Thread: Combining rotary and X feeds in mill?

  1. #1
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    Default Combining rotary and X feeds in mill?

    On a 4th. axis mill, how can you combine the rotary feed, given in degrees per minute, with the X feed ib IPM?
    Its a 4' diameter part with a thread shape around the OD.
    Any ideas?
    Heinz. www.doccnc.com

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    Default Re: Combining rotary and X feeds in mill?

    Hey Heinz,
    Attached is a PDF that explains the feedrate calculation for a rotary axis.

    Basically it appears to be IPM*57.296/R

    Steve
    Attached Thumbnails Attached Thumbnails feed rate calculation rotary axis.pdf  
    (The opinions in this post are my own and not those of machinetoolhelp.com and its management)

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    Default Re: Combining rotary and X feeds in mill?

    Hello Steve:
    How are things going in Wisconsin.
    here in Ohio they are starting up with oil related work and I seem to get quite a few shops in N. Dakota doing the same thing.
    Any oil where you are?
    On the rotary feed, I have it as part of one of my Math DVDs, the question I had was to combine rotary wth regular feed.
    The part is rotating at a certain feed while the X is moving over at another Feedrate, like cutting a square thread.
    Good luck with your work there.
    Heinz, www.doccnc.com

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