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Thread: Other design Oval turning device

  1. #1
    Join Date
    Sep 2007
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    Other design Oval turning device

    After thinking a long time on my first design, I found another and more simply way for building an oval turning device, so with less parts than in my first design, and also with the possibility to turn three different oval shapes..
    All the rotating parts are fitted with rollerbearings, and the swivel points with nylon bearings. The device is lathe driven by using chainwheels with rollerchains. The reduction between the driven shaft and the faceplate is 1:2, so a rotation of 180 degrees of the crankshaft means a rotation of 90 degrees of the faceplate, and a translation of the faceplate to the left, this movement creates a quarter of the oval shape.
    Most of the needed parts, like rollerbearings, chainwheels and other material I have in stock.
    Think to start with building this device in about a couple of weeks, having still the time to think it all over, and to change something.
    Thanks for looking.
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    Attached Thumbnails Attached Thumbnails Oval turning device - other design.jpg  

  2. #2
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    As a formal mechanical designer i find this interesting. I just stopped to eat something and I don't have time to study it and understand it right now. But I will come back to it tonight probably. Very interested in what you have there.

    I don't really want to go back to my old job but I do miss this kind of stuff.
    God grant me the senility to forget the people I never liked anyway,
    the good fortune to run into the ones I do,
    and the eyesight to tell the difference.


    Kudzu Craft Lightweight Skin on frame Kayaks.
    Custom built boats and Kits

  3. #3
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    Very interesting design.... it does take a bit of time to understand.
    Here's one very similar in construction: http://www.claycritters.com/lathe/

  4. #4
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    Quote Originally Posted by Jim Kunzweiler View Post
    Very interesting design.... it does take a bit of time to understand.
    Here's one very similar in construction: http://www.claycritters.com/lathe/
    Thanks Jim for making me attent to this website, I studied this oval turning device of Bollinger already, before I started with to developed my own version. For this Bollinger version you need a well equipped machine shop, which I don't have. So I have to do it with the possibility's I have in my own workshop, that means also a lot of handwork.
    Thank you very much for taking the time for looking to the drawing. I appreciate this very much.

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  5. #5
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    Sep 2007
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    Oval turning device, production of parts

    Started yesterday with the production of parts for the Oval turning device.
    Used parts of a bike, like the chainwheel 44tooth, and the crankaxle.
    The spindle for the rocking headstock is made of a 20mm tube, and cut off bearing parts of the crankaxle.
    Drilled also 4 holes into the faceplate for fasten pieces of work.
    For me is this a fun projects, time consuming, getting dirty hands, by doing it all with my bare hands, without using machinery, except my table drill press.

    Thanks for looking.
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    Attached Thumbnails Attached Thumbnails 100_1582 .jpg   Oval turning device - other design.jpg  

  6. #6
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    This is going to be a fun build to watch. Good luck, and have fun, Ad.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
    When the weird get going, they start their own forum. - Vaughn McMillan

    workingwoods.com

  7. #7
    Join Date
    Sep 2007
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    Quote Originally Posted by Vaughn McMillan View Post
    This is going to be a fun build to watch. Good luck, and have fun, Ad.
    Thanks Vaughn, I have a lot of fun, and hands black like a coalman....)))

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