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YATSDRO (Yet another tailstock DRO)

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  • YATSDRO (Yet another tailstock DRO)

    Inspired by dockrat's thread, I finished my tailstock DRO this morning. Pretty much the same as his but the ram to slide connection was made via a couple r/c helicopter ball-links. No problem with ram rotation binding anything.

    Works great. Wish I'd done it long ago.



    Milton

    "Accuracy is the sum total of your compensating mistakes."

    "The thing I hate about an argument is that it always interrupts a discussion." G. K. Chesterton

  • #2
    Looks great DB. Neat idea but do you actually have ram rotation in yours? I can't detect any rotational movement in my ram at all.
    Ernie (VE7ERN)

    May the wind be always at your back

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    • #3
      Thanks dock. Unfortunately my ram does rotate about 3/32" measured at the ball link attach point. Take a look at the pristine green paint on the tailstock and you can see it's been used a bit.

      The groove in the ram is fine; it's the little index peg that's worn. S'pose I could make a new one...naaah, too lazy.
      Milton

      "Accuracy is the sum total of your compensating mistakes."

      "The thing I hate about an argument is that it always interrupts a discussion." G. K. Chesterton

      Comment


      • #4
        Yes, nice job DB, good thinking on the little RC helicopter link,

        Curious, does, the indicator show different measurement throughout the rotation?

        Ken

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        • #5
          Nice job,I like the ball links idea,that should have several applications.
          I just need one more tool,just one!

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          • #6
            Good question Ken. I just did a little test to check and was surprised.

            Maybe I should quote all the dimensions and have a contest to see which math whiz could do the trig correctly and come up with the closest answer?



            Naah, I don't wanna waste even more bandwidth giving birth to yet another thread argument.

            The answer is .0025 Chinese inches. I pressed a drill bit up against a piece of stock in the chuck, rotated the ram all the way C/CW, zeroed the DRO and rotated it CW to come up with that figure. It was repeatable.

            Doesn't matter as long as I rotate it CW and zero before starting a drill op. I don't usually need that much drill depth accuracy anyway but it's nice to know it's there when needed.
            Milton

            "Accuracy is the sum total of your compensating mistakes."

            "The thing I hate about an argument is that it always interrupts a discussion." G. K. Chesterton

            Comment


            • #7
              Hmm my ram rotates a little stock from the factory.. a new index pin you say? hmmm. Project # 1512 initializing....
              Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.

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              • #8
                Originally posted by DICKEYBIRD
                The answer is .0025 Chinese inches. I pressed a drill bit up against a piece of stock in the chuck, rotated the ram all the way C/CW, zeroed the DRO and rotated it CW to come up with that figure. It was repeatable.

                Doesn't matter as long as I rotate it CW and zero before starting a drill op. I don't usually need that much drill depth accuracy anyway but it's nice to know it's there when needed.
                That's not much, and doing as you mention negates even that.

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