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  • How do I make this

    This is the only handle I have for my Fritz .I need to make two more.
    The main part of the handle the crank and the part you hold I will have no trouble with.
    but looking at these dogs has me puzzled on how to make them.,
    The only thing I can think of is to mount the peice in a dividing head and cut them with a special tapered endmill of some sorts.
    bet a shaper could do these...but I dont have one

    MY 3d engraver would do it I know ...but would be a long job.
    what do you think guys .what am I to do.
    Is there a simple way that I've not thought of.



    all the best....mark

  • #2
    Mark...

    There was an article in MEW about a year or so ago by Dave Fenner on cutting a 7 tooth dog like yours.

    Just used an endmill,if I can find the article tomorrow I'll post the MEW issue number.You'll see it's very simple.

    Allan

    [This message has been edited by Allan Waterfall (edited 07-12-2005).]

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    • #3
      I ran into the same thing when I fitted a handwheel to my milling machine. As I stared at the splines, I had a moment of clarity, and the job went very easily:

      http://www.frets.com/FRETSPages/Mach...handwheel.html
      Cheers,

      Frank Ford
      HomeShopTech

      Comment


      • #4
        Thanks frank .I seeeeee
        putting my metal rule on mine i see how its done .
        you have to machine them just one revolution of the rotary table.
        turning the whole rotary table a full revolution
        on the first half of the rotation it gets one side of the dogs ..and on the second half it gets the other ..briliant ..but very simple really once you study it .
        and thanks Allan as well.
        all the best.mark

        [This message has been edited by aboard_epsilon (edited 07-12-2005).]

        [This message has been edited by aboard_epsilon (edited 07-12-2005).]

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        • #5
          http://homepage.ntlworld.com/stevens...files/2334.pdf

          http://homepage.ntlworld.com/stevens...files/2335.pdf
          .

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



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          • #6
            Great site, Frank - loved the mini chain hoist project.

            dp

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            • #7
              Thanks John
              68.5 degrees turn per cut should be close enough then for this application.
              all the best...mark

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              • #8
                or does it
                I get
                360 / 7 = 51.4285714 degrees
                now I'm confused.
                all the berst.mark

                [This message has been edited by aboard_epsilon (edited 07-12-2005).]

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                • #9
                  escuse me rabling on
                  I've worked out,
                  I've got I think eight cuts.
                  and that works out at 45 degree roration per cut ....is that right
                  all the best.mark

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                  • #10
                    Nice site Frank!

                    It looks like seven to me Mark. That's where an indexing plate comes in handy.

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                    • #11
                      Mark, I use an indexing head to do these. If I remember right even and odd will cut different. On one you can cut through both sides and the other you have to cut one side and rotate. I think it is the odd number that you can cut both sides in one pass. Fun project.
                      Michael

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                      • #12
                        NOT GOT AN INDEXING HEAD.
                        and have a feeling it would not do seven devisions.
                        think it would do 2,3,4,6,8,9,12, and multiples of that lot...there again , i dont have one .but I some how think ..above will be right.
                        all the best.mark

                        [This message has been edited by aboard_epsilon (edited 07-12-2005).]

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                        • #13
                          You're thinking of those cheap plates that have cutouts around the circumference. I'm talking about the plates that have multiple hole circles/grids. A 28-hole pattern is a common grid. You'd use every 4th hole (28/4=7).

                          But you don't have one.



                          [This message has been edited by CCWKen (edited 07-12-2005).]

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                          • #14
                            Had to make a new handle for my #4 Cincinnati. The knee crank has 7 teeth, had to set the dividing head up for 14 divisions. Went around the hub twice, first getting one side, then getting the other side. Tried doing it the first time with 7 indexes, didn't work correctly. Only the outer corners made contact; not good on a 6000 LB knee.
                            Harry

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                            • #15
                              Hi Ken
                              I was thinking he ment a spindex.
                              I do have a dividing head ......and hopefully a plate with the right multiple of holes.
                              I was just trying to workout how to do it on my rotary table thats all.because it's still on the mill from the last job.
                              I have no plates with my rotary.
                              all the best......off to bed now ..mark

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