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Cutter for 9 tooth 16/32 involute spline

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  • Cutter for 9 tooth 16/32 involute spline

    All,

    I have a broken shaft from a gearbox with a flat root involute spline. Through reading this forum as well as other sources I believe it's a 16/32, althought I haven't done any serious measuring to verify. The shaft OD is .625 on the money. Roughly measuring with calipers the internal spline ID is slightly over .500. I think it's a side fit because I can see daylight between the major diameters when the broken piece is slid into it's mate.

    I've poked around the interweb for a cutter, but I haven't found anything less than 12 teeth. Any leads on where I might find such an animal?

    Thanks,
    Aaron

  • #2
    Aaron
    Pay close attention to John Stevenson's posts
    He knows lots about what you need to know
    Check it out here
    http://www.metalwebnews.com/howto/gear/gear1.html
    and here for splines
    http://bbs.homeshopmachinist.net/arc...hp/t-7390.html

    Rich
    Green Bay, WI

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    • #3
      It is possible to grind a bit for a fly tool for cutting splines. It takes a long time and a steady hand to grind the form into the tool. One bobble with the dremel and you get to start over.

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      • #4
        This is a newer, more relevant thread.

        http://bbs.homeshopmachinist.net/thr...Involute-shaft
        .

        Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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        • #5
          Thanks for the info guys. I was hoping to be able to buy a cutter and avoid a project to be able to do the real project. Does anyone have software that could kick out a dxf? I've got AutoCAD 2004 and solidworks 2007.

          I drew an involute spline using the string method in solidworks for wire edm shop a year ago. It's a bit of a pain to do. They were able to cut the profile I created but it didn't pass QC. I could draw this one using the string method but it's on the same level as going to the dentist.

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          • #6
            Can do you one tomorrow morning. Getting late here
            .

            Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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            • #7
              Aaron,
              can't upload the file to my server, send me an email to john [at] stevenson-engineers.co.uk and I'll post you the DXF.
              .

              Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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