Turning and boring almost any* shape. *within reason

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Turning and boring almost any* shape. *within reason

Home Forums CNC machines, Home builds, Conversions, ELS, automation, software, etc tools Turning and boring almost any* shape. *within reason

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  • #15305
    sam sokolik
    Participant
      @samsokolik60334
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      #502751
      sam sokolik
      Participant
        @samsokolik60334

        Some more fun with cnc…

        #502831
        Michael Gilligan
        Participant
          @michaelgilligan61133

          Clever stuff, Sam yes

          Keep sharing your adventure

          MichaelG.

          #502863
          DC31k
          Participant
            @dc31k

            A couple of questions:

            Right now, it is effectively converting a closed shape into a series of (X, A) coordinate values, where I guess the A- increment can be arbitrarily small.

            How easy would it be to make it turn 90 degrees and produce (Z, A) values? I am thinking of a face cam, as used in Brierley and Rush drill grinders.

            https://rushmachinery.com/products/drill-and-tool-grinders/model-132c/

            Second, does it have any built-in idiot-proofing? If I sent it a circular hole with a keyway cut out, would it tell me to go away and pound sand due to the discontinuity in the profile? As a corollary to this, what is the most acute internal angle with which it is comfortable (e.g. an equilateral triangle-shaped bore)?

            Thanks.

            #502872
            Nigel Graham 2
            Participant
              @nigelgraham2

              I'm not an expert on CNC machining but I don't think the keyhole would be a problem unless the corner radii are very critical . Rather, won't the minima on milling internal dimensions including angles, be controlled by practical machining criteria like the diameter and lengths of the cutters, more than the tool paths?

              I recall seeing a drawing at work of something resembling the internal profile of a hollowed stepped pulley, in which one of the steps was shown with a small pocket, perhaps for a form of key, milled into it. The pocket's size and 2mm corner radii were so small, and it was so far down the overall cavity, I could not imagine how it could be machined with any standard slot-drills.

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