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Thread: Collet closer

  1. #21
    Supporting Member marksbug's Avatar
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    THANK YOU!!!! we all get different ideads from others ideas and thats what evolution is all about. and it keep us trying to make a better mouse trap. I remember one shop I ran&programed cnc mills and much more we had as old band saw, a big one I think it was a meat saw at one time.but it had a 4 speed volvo trans mission running it.oh so eazy to change speeds when you needed too with no fuss at all. I presume it only had 1 speed as a meat saw. I remember long ago in okanawa japan growing up with motorcycles and gocarts, when we needed something different to finish a build we just fired upo the big hibachi groll ( basicly the big green egg but 35 years before the big green egg) and we would make what we needed with whatever we had...Ive addvanced a bit since then but still love making things .and seeing other peoples stuff just adds to the brain power for all of us. remember there is always a better way.

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  3. #22
    Supporting Member threesixesinarow's Avatar
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    threesixesinarow's Tools
    These are less interesting, but still useful parts of it.

    The first picture is to show the sleeve with a couple flats that unscrews from the spindle guard to release the 3c adapter. I made it soon after the first time swapping from collets back to a regular chuck. I also figured out pretty quickly using it that I needed a splash guard, but didnít spend as much time on that.


    Collet closer-2319e1c0-0ade-4bab-a9b9-ff0a916779f7.jpg Collet closer-9edcdf19-8fbc-422c-9a13-10ed5926cbf4.jpg

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  5. #23
    Supporting Member old_toolmaker's Avatar
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    old_toolmaker's Tools
    threesixesinarow<

    Thank you for the pictures. They are most helpful.
    Dick


    Links to some of my plans:

    http://www.homemadetools.net/forum/f...6068#post65876 OFF-SET TAILSTOCK CENTER PLANS
    http://www.homemadetools.net/forum/s...995#post112113 SMALL TURRET TOOL POST PLANS
    http://www.homemadetools.net/forum/l...994#post112111 LARGE TURRET TOOL POST PLANS
    http://www.homemadetools.net/forum/m...383#post110340 MINI-LATHE CARRIAGE LOCK PLANS
    http://www.homemadetools.net/forum/s...191#post106483 SMALL QC TOOL POST PLANS
    http://www.homemadetools.net/forum/q...849#post119345 QUICK CHANGE LATHE TURRET
    http://www.homemadetools.net/forum/m...949#post119893 MINI LATHE COMPOUND PIVOT MODIFICATION

  6. #24
    Supporting Member Toolmaker51's Avatar
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    Toolmaker51's Tools
    Quote Originally Posted by threesixesinarow View Post
    Going by the drawings and the steps they suggest and what parts could be bought in I would make a ball one now. The yellow South Bend drawing I posted yesterday makes the mechanism pretty clear, hereís a photo, also from practicalmachinist.com, https://www.practicalmachinist.com/v...9/#post1859229

    Iím curious if there are problems with them, though, I wonder why they arenít more common compared to the finger ones.
    One time I made new 3 piece finger sets for a worn collet setups where I worked. I don't remember if they were chuckers, screw machines, or multi spindle. They were sawn from A2 and milled into shape, no CNC all rotary table and indexer. I bet ball operated closers outnumber finger closers for that very reason. High quality Class 7 balls; easy OEM procurement, accurate size and form, perfect heat treat, and replace when time comes. Another plus is engineering factor, more compact. I suspect fingers are preferred for mechanical advantage of leverage; bigger lathes, bigger material, heavier cuts.
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

  7. #25
    Content Editor
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    Thanks threesixesinarow! We've added your Chuck Guard to our Lathe Accessories category,
    as well as to your builder page: threesixesinarow's Homemade Tools. Your receipt:




  8. #26
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    hi,
    do you all have any plans for a ball bearing version?
    thanks,
    matt

  9. #27
    Supporting Member threesixesinarow's Avatar
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    threesixesinarow's Tools
    Quote Originally Posted by whitehouse260 View Post
    hi,
    do you all have any plans for a ball bearing version?
    thanks,
    matt
    Hi, Matt,

    I don’t - I’d like to see them, too, if someone else has them.

    I don’t know how much this will help, but up the thread there’s a couple drawings for a South Bend that might make a good start toward making one, combined with the photos at Practical Machinist. That works like an inside out version of the watchmaker lathe clutch shown on the second page.


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