Yet an other Rotary Table, Direct Turning

Discussion in 'Machine Modifications' started by necchiom, Dec 31, 2019.

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  1. Dec 31, 2019 #1

    necchiom

    necchiom

    necchiom

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    Good morning folks.
    I finally won over shyness (or laziness...) and I decided to share my experience on developing a sligthly modified version of the Harold Hall: Rotary Table, Direct Turning.
    "Modified" because casually I found a bigger piece of cast iron than what suggested by the original drawings... Furthermore because I had to convert dimensions from Imperial to millimeters.
    Here is what I've done so far. Last, but not least, I apologize for my bad spaghetti english.

    20191229_114804.jpg 20191229_165810.jpg 20191229_181044.jpg 20191231_082228.jpg
     
  2. Dec 31, 2019 #2

    necchiom

    necchiom

    necchiom

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    To whom interested on metric drawings....
     

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  3. Dec 31, 2019 #3

    dethrow55

    dethrow55

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    hello not to be a wise guy , the origional drawings are in metric. nice! happy new year
     
  4. Dec 31, 2019 #4

    necchiom

    necchiom

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    Approaching the T-Slots...

    @dethrow55; unfortunately what I've got are in inches...

    20191231_161227.jpg 20191231_164546.jpg 20191231_170912.jpg 20191231_173052.jpg 20191231_175811.jpg
     
  5. Dec 31, 2019 #5

    dethrow55

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    wow thats strange because in the book that i have, its metric . maybe there is a metric and imperial version of the drawings.
     
  6. Jan 3, 2020 #6

    necchiom

    necchiom

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    Further progresses...
    20200101_110602.jpg 20200101_111141.jpg 20200101_125608.jpg 20200101_163312.jpg 20200101_172244.jpg 20200101_173617.jpg 20200101_181044.jpg 20200101_183219.jpg
     
  7. Jan 15, 2020 #7

    necchiom

    necchiom

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  8. Jan 15, 2020 #8

    dethrow55

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    looking good
     
  9. Jan 16, 2020 #9

    awake

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    Nice work!
     
  10. Jan 20, 2020 #10

    necchiom

    necchiom

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    During the weekend I had some hours for producing new parts, improve and finish some others.
    Here are some pictures.
    Unfortunately I am discovering that the original design, in my humble o pinion..., has some conceptual lacks.
    Nose, pin and reference hole in the rotary table is in an hyperstatic condition so no way to fine tune the alignment among the three axes.
    I am thinking about a different solution based on a eccentric rotating bush.

    20200118_165036.jpg 20200118_183741.jpg 20200119_171859.jpg 20200119_172721.jpg 20200119_172902.jpg
     

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