Would someone like to try out this 4th axis fixture? - Page 2
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  1. #21
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    Very VERY cool!

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    Quote Originally Posted by D Smith View Post
    Thanks Guys! I was hoping others would see the value in it. I just cant justify getting all the set up for a real 5 axis but this is a bridge for now and working great for me. I have another slightly larger on in the works that uses the 5th axis V75100X vise because I can see that doing a lot of work for me as well. 5th axis is local to me and I love their products. They have such an awesome shop. I'll get going and post some pics of the vise version and look for someone to test it out as well.
    IIRC Gene Haas started out with a simple indexer.....Just sayin'

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    I rarely do stuff that small, but I think it looks like a great idea! Very cool!

  4. #24
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    About accuracy, I'm a little kooky about it. I am getting the standard 30 arc seconds position and 10 arc seconds repeatability but think I have a grinder up in LA that is legendary and says he can do better. I'm tempted to try at least one and see how it goes. He has all Herman Schmidt equipment on his grinder that my guy does not. But still 30 arc seconds it pretty good huh?

  5. #25
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    Quote Originally Posted by D Smith View Post
    A model V6 ? Cool

  6. #26
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    Make it ready for tailstock support, and large enough to take a macro magnum.... I'd buy one.

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    I saw index designs has a very similar product but theirs is indexes via air. Is this going to at some point be similar? So an m code could be programmed and it will index?

  8. #28
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    Quote Originally Posted by EmanuelGoldstein View Post
    A model V6 ? Cool

    Y block with cross bolted mains by the looks of it. (not drilled yet)
    Kind of a tall deck height too eh?
    With that wide of a top end, I wonder if you could git away with a low riser cross port tunnel ram?
    Like on the old 426's? (The whole under hood is carbs and intake!)


    ---------------------

    Think Snow Eh!
    Ox

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  10. #29
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    Well done I like it a lot. It's a great bridge to a real full 5th axis and more. I could see that getting a lot of use in many shops. By the looks of it you did a fine job. It is a great example of American ingenuity and passion. The Hardinge Brothers are smiling down on you.

    Make Chips Boys

    Ron

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  12. #30
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    looks really nice. Is there any way to make the indexer work like a super spacer?

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    No plans to go with air indexing and M codes. Keeping the cost down and accessible to shops like me is important. What is the function of a Super Spacer that you would want? I had a Yuasa Accu-dex back in the day. I really miss the days of making a living with manual machines. Great memories.

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    My only suggestion is to possibly have more angle options and a center drill for a tailstock support.

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  16. #33
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    I really only have one question:
    How is the positional locking accomplished?
    Is it a simple round pin in a round hole? Or is there some type of wedge/taper feature?

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  18. #34
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    Quote Originally Posted by D Smith View Post
    No plans to go with air indexing and M codes. Keeping the cost down and accessible to shops like me is important. What is the function of a Super Spacer that you would want? I had a Yuasa Accu-dex back in the day. I really miss the days of making a living with manual machines. Great memories.
    on a super spacer, there rotation is lock in by a wedge at a certain interval. I don't know if they're all the same, but lets say its 15 deg. Then you have different plates that fit onto the back, with cutouts that only allow it to fall in at certain angles.
    So lets say you had a part where you needed to index at 90 deg intervals. You would use a plate with 4 notches at 90 deg. If you needed to index at 60 deg intervals, you would use a plate with 6 notches, etc.

  19. #35
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    No pins to locate here. it has a drill blank with 15 degree flat wedge in a drill bushing that is .0001 dia larger and a 150 lb die spring to push it in and hold it there. The dove tail will fail before you over power the index mechanism. All indexing parts are D2 heat treated then ground. 8 locations spaced 45 degrees apart. And yes the index ring is replaceable with any angles you would like. I never had thought of that but the design does lend itself to swapping the index ring. I like this idea, thanks,

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  21. #36
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    Quote Originally Posted by D Smith View Post
    ...... But still 30 arc seconds it pretty good huh?
    I call that really, really good.
    How do you even measure that on a 2-4 inch radius part or master? My sub micron lvdts have a hard time touching that.
    Please do not tell me you are using a DTI even if 50 millionths.

    I may piss on real numbers just to be an ass but the whole darn thing looks like a very, very good idea.
    I do like it it a lot. Many would only need index on what is the fifth.
    A great idea.
    Bob

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    Bob, I grew up in Holly just south of you! Now I live in the sunshine and never miss the snow.
    So as best as I can figure in my old school way is this, I put the manual index axis parallel to the table(A90), cut a block 2" above center line, index 90, cut and repeat 3 times. This gives you a 4" square. 30 arc seconds over 4" is .0006" so if the taper in the two sides is less than .0006" does that mean its within 30 arc seconds or since the part was rotated 180 is it 15 arc seconds? If the 180 degree spread is good and the index wheel was ground at the same time I assume the 90 degree is the same but since by brain exploded in one of the calculations I check in on a Mitutoyo Brightstrato 710 CMM at a friends shop. My Helmel is good but not that good.

  23. #38
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    Quote Originally Posted by D Smith View Post
    No pins to locate here. it has a drill blank with 15 degree flat wedge in a drill bushing that is .0001 dia larger and a 150 lb die spring to push it in and hold it there. The dove tail will fail before you over power the index mechanism. All indexing parts are D2 heat treated then ground. 8 locations spaced 45 degrees apart. And yes the index ring is replaceable with any angles you would like. I never had thought of that but the design does lend itself to swapping the index ring. I like this idea, thanks,
    Oooooh…..need to incorporate the Newbould infinite (almost) differential
    planetary indexing system....

    Yup, your die spring to keep it locked, cylinder to pull it apart slightly, and (2) indexing motors, one for the outer ring, and one for the middle ring.

    Sort of like a curvic coupling.

  24. #39
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    What does the interface to the vise look like?

  25. #40
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    Quote Originally Posted by D Smith View Post
    ....
    So as best as I can figure in my old school way is this, .....
    Yup, sorry my napkin math was off by a decimal point...duh........

    Totally aside and off topic, Hoping for real snow tonight of 6 or more...... Maybe I can go to Mount Holly and play in a decent amount of actual snow and not that ice stuff they make.
    As a very little kid the best place in the world to go with mom and dad in wintertime, hills, snow, very old handmade skis from the old country that you strapped onto your shoes with a one tiny leather belt.
    ....( family is Norwegian, snow is in the blood from the day you are born)

    Your system seems great and slick to me. Some pros may not like it for various reasons.
    But like the ski equipment laughed at as a child......follow me down the hill.
    Bob


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