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Thread: [Metal lathe] Indexing plate and cranck

  1. #1
    Supporting Member Christophe Mineau's Avatar
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    [Metal lathe] Indexing plate and cranck

    Hi,
    I needed something to index the spindle of my metal lathe, and I decided to build it, adding the crank feature. I wanted something not too much intrusive and that would be quickly mounted / unmounted as needed.

    Here is what I came up with :









    And here is how I did it :

    First the plate, continuing on my idea to source metal in the kitchen utensils, it is made from an induction interface plate. I initially thought it would have been made of plain stainless steel, but I discovered when drilling through it that it is actually principally made of aluminum, coated with stainless steel sheets on both sides. Anyway, this is good enough for me, it is 5mm thick.
    The shaft is turned out of aluminum round stock, and will be inserted in the spindle (21 mm on that side).


    The shaft is cut at 45° using the table saw. Wood cutting tools work well for aluminum.
    I don't remember who gave me this idea for locking the shaft in the spindle, I think it's here, maybe Paul Jones.
    It works very well and is really much easier to make than an expending system.


    The plate is screwed on the shoulders of the shaft.
    On the right you can see the beveled bottom part of the shaft. The inside bore is threaded and a piece of threaded rod will be used to pull it and lock it.




    For drilling accurately the indexing holes, I drew a two pieces template with my
    CAD software.


    It was initially planned only to be a template but I left it glued on the plate actually and varnished it to protect it from dirt.


    The crank knob, wood turned out of beech. I inserted a brass sleeve in it to ease the rotation of the knob around the screw.


    Finished Verso. The brass pin will be inserted in a small block of steel screwed on the lathe body.
    The tip is threaded M4 and the shaft has a 5mm diameter.


    Finished Recto :
    Cheers !
    Christophe
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  2. The Following 10 Users Say Thank You to Christophe Mineau For This Useful Post:

    bobs409 (01-29-2017), C-Bag (04-08-2016), garage nut (12-05-2017), jeanalvitre (04-16-2016), Jon (04-08-2016), lazarus (06-03-2016), Metallurg33 (04-28-2018), PJs (04-08-2016), Rangi (04-15-2016), rctoywizard (04-08-2016)

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    Supporting Member C-Bag's Avatar
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    great project, great documentation!

    I feel another "tool of the week" coming on........

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    bobs409 (02-18-2018), Christophe Mineau (04-09-2016)

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    sking0369's Tools
    Nice work there but I'm not understanding what the shaft cut at 45 is for?

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    Christophe Mineau (04-09-2016)

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    very nice job. I like it . thanks

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    Christophe Mineau (04-09-2016)

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    Thanks Christophe Mineau! We've added your Indexing Plate and Crank to our Lathe Accessories category,
    as well as to your builder page: Christophe Mineau's Homemade Tools. Your receipt:




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    Christophe Mineau (04-09-2016)

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    Supporting Member scrdmgl's Avatar
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    The cut at 45 Deg., allows the short piece to slide when the bolt at the end is tightened and locks to the spindle ID holding the whole assembly in place. Simple and effective.

  12. The Following 2 Users Say Thank You to scrdmgl For This Useful Post:

    Christophe Mineau (04-09-2016), Paul Jones (04-10-2016)

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    PJs
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    Nice Job Christophe! Very cool to re-use the induction plate. Really like your protected template with the Octagon and Hexagon for an easy visual from the work side!! Great pictures and docs as well! Thanks for sharing a great build. ~PJ
    ‘‘Always do right. This will gratify some people and astonish the rest.’’
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    rossbotics
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    Hi christophe
    Good work buddy, I'm assuming you have a milling attachment on your lathe ? Are you making camshafts ? Crank Shafts ? Mr. Curiosity here LOL.
    Anyway great write up & Doc., I'm curious as to what was your main concern for making an indexing plate for your lathe,
    Nice Job

    Doug
    Comments are always welcome
    Doug

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    Supporting Member Christophe Mineau's Avatar
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    Quote Originally Posted by rossbotics View Post
    Hi christophe
    Good work buddy, I'm assuming you have a milling attachment on your lathe ? Are you making camshafts ? Crank Shafts ? Mr. Curiosity here LOL.
    Anyway great write up & Doc., I'm curious as to what was your main concern for making an indexing plate for your lathe,
    Nice Job

    Doug
    Hi Doug, thanks for the kind words !
    Actually, more than the indexing feature, I needed the locking feature, especially for side drilling.
    (See the other topic)
    Example :
    Attachment 9890

    But Yes, I often do some small milling or grinding with my Dremel attachment, and I have recently purchased a small rooter that I wish to install on the lathe, probably in my milling square to get a Z axis.
    I want to use it also for sharpening or grinding some conical reamer for woodwind instrument making.

    Cheers !
    Cheers !
    Christophe
    ________________________________________________________________
    Visit my Website : http://www.labellenote.fr/
    Facebook : La Belle Note
    All my personal works, unless explicitly specified, are released under
    Creative Commons BY-NC-SA license.

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    PJs (04-11-2016)

  18. #10
    Supporting Member Christophe Mineau's Avatar
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    Quote Originally Posted by scrdmgl View Post
    The cut at 45 Deg., allows the short piece to slide when the bolt at the end is tightened and locks to the spindle ID holding the whole assembly in place. Simple and effective.
    Yes, that's exactly it, quick and easy solution !
    Thanks
    Cheers !
    Christophe
    ________________________________________________________________
    Visit my Website : http://www.labellenote.fr/
    Facebook : La Belle Note
    All my personal works, unless explicitly specified, are released under
    Creative Commons BY-NC-SA license.

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    PJs (04-11-2016)

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