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Thread: Knurling tools and holders

  1. #11
    rustamd Guest

  2. #12
    Join Date
    Sep 2004
    Posts
    2,986

    Default HomeMade Knurler

    I have had a few Knurlers . Finally milled out a scissor type from 4340 sdteel. Almost done but then a dozen other projects were getting finished also. I wanted to knurl stainless steel. I think for tough materials a cnc type knurler used in a manual lathe is actually the way to go. The knurls held at a 30 degree angle forcefully cut into the material nicely. What do you guys think? Mike

  3. #13
    Join Date
    Mar 2007
    Location
    Lancashire, UK
    Posts
    637

    Default

    Ok - some more pictures of the knurler. The reference that Rustamd gave is correct.





    The tool is quite easy to make. In fact I cut out the arms and the other plates with just hacksaw and files. I didn't have a milling machine at the time. A bit of exercise is good for you

    Apart from the eccentric adjustment (which is very useful) the big plus point for this design is that it is strong. Most of the commercial scissor units are really wimpy with arms that are undersized. Knurling involves significant forces and a tool that just bends and twists is useles.
    Bill

  4. #14
    Join Date
    Jan 2010
    Location
    Kansas City area
    Posts
    3,242

    Default Knurling Tool

    Thanks willmac - much appreciated. Great job too, it's a nice piece of work!
    Thanks to rustamd too, for the link. It is very informative. I may have to build one of those.

  5. #15
    Join Date
    Aug 2002
    Posts
    7,951

    Default

    I have one the same as this and also one designed especially for my lathes toolholders both work beautifully but I don't think their cut knurls.Alistair
    Please excuse my typing as I have a form of parkinsons disease

  6. #16
    Join Date
    Mar 2007
    Location
    Lancashire, UK
    Posts
    637

    Default

    No it is not a cut knurler. But I don't think this is essential for the OP's application.
    Bill

  7. #17
    Join Date
    Jun 2008
    Location
    Yorkshire, Centre of the known Universe
    Posts
    1,903

    Default

    Just so that the O/P has all the facts between a cut and a scissor type knurler, depends how close to a shoulder you need to go with the knurl.

    The scissor type is streets ahead of the crush type, but similarily the cutting type seems to generate even less stress on the bearings of the lathe.

    No axe to grind on either type, but as a Mech. designer, my preference would be the cut type.

    Regards Ian
    You might not like what I say,but that doesn't mean I'm wrong.

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