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Interesting use of a lathe

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  • Interesting use of a lathe

    I saw this video pop up. Someone the actual procedures are a little crude (indexing, live tooling) but it is an interesting concept using the live center in the chuck so you can power the carriage. Basically turns it into a make shift planer/shaper.


  • #2
    I do like the way he used the power feed and adding a hand held drill to power the final cutter.

    But I always have to question the accuracy of gears made with such crude indexing methods. He did use a large diameter disk so that the errors would be less on the gear, but still .........
    Paul A.
    Golden Triangle, SE Texas

    And if you look REAL close at an analog signal,
    You will find that it has discrete steps.

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    • #3
      If the errors are small enough, they would wear in.

      Comment


      • #4
        Man needs a TOS where you can run the feed in neutral.
        21" Royersford Excelsior CamelBack Drillpress Restoration
        1943 Sidney 16x54 Lathe Restoration

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        • #5
          That's old school small shop indexing, very old school.
          The shortest distance between two points is a circle of infinite diameter.

          Bluewater Model Engineering Society at https://sites.google.com/site/bluewatermes/

          Southwestern Ontario. Canada

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          • #6
            Just plain ole' turning until 6:00, then step-and-repeat until 10:45 when the drill comes in. Then step-and-repeat until the end. 15:10 - man, those are shetty gear teeth!
            Last edited by Bob Engelhardt; 03-29-2022, 07:04 PM.

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            • #7
              Originally posted by The Metal Butcher View Post
              Man needs a TOS where you can run the feed in neutral.
              The one I used if I remember correctly was only in rapid. It might be ok if you were using it like a planner, but would probably be too fast for live tooling.

              You probably could hook up a VFD to the feed motor though.

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              • #8
                Originally posted by oxford View Post

                The one I used if I remember correctly was only in rapid. It might be ok if you were using it like a planner, but would probably be too fast for live tooling.

                You probably could hook up a VFD to the feed motor though.
                Certain ones can run the feeds like normal with the spindle in neutral. Gotta be one of the top lever ones, I think with the dual lever?
                21" Royersford Excelsior CamelBack Drillpress Restoration
                1943 Sidney 16x54 Lathe Restoration

                Comment


                • #9
                  Originally posted by The Metal Butcher View Post

                  Certain ones can run the feeds like normal with the spindle in neutral. Gotta be one of the top lever ones, I think with the dual lever?
                  That’s what this one was with the top levers. It’s been a while since I used that machine (2 employers ago). I don’t remember a neutral, I thought you had to float between gears but I may be remembering it wrong. I know other European lathes I used were like that for spindle “neutral”, and would probably work like that for power feed without spindle rotation.

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                  • #10
                    Originally posted by Bob Engelhardt View Post
                    man, those are shetty gear teeth!
                    It's okay, those are for the transmission of a FIAT.

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                    • #11
                      That's not a gear, it's a triangle, but it ain't an involute. Ok, I get it, make do with what you got, just thankful that ain't my situation.

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                      • #12
                        I didn’t really post the video for the “gear” making content, like I said in the OP some (all) of the video was a little crude for the prodecdures. It was more so of powering the carriage without the workpiece moving. Depending on what you have for machines at your disposal it would really open up some options for long parts that wouldn’t go in the mill.

                        This would be good for cutting long keyways in shafts, either with live tooling or shaper/planer style. We just had a thread about cutting a long keyway in a lead screw, you could get it done this way if it was your only option. Follow rest behind long/skinny parts would most likely be needed.

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                        • #13
                          Originally posted by Dan_the_Chemist View Post

                          It's okay, those are for the transmission of a FIAT.
                          Fix
                          It
                          Again
                          Tony
                          I cut it off twice; it's still too short
                          Oregon, USA

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                          • #14
                            A bit of careful grinding of the 'drill bit' might have produced a more acceptable tooth form.

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                            • #15
                              Stanko ant it seems TOS can run in neutral, with a stanko you have to contrive a spindle lock as it floats about but other than that the carriage powers with the spindle static, I suppose it’s going to wear the hell out of the leadscrew nuts, using it as a planer but with a milling cutter and a powered spindle it might be an ok solution ( I’ve only tinkered with a thread milling attachment on a lathe once, it worked but I certainly hit the depth by luck I think)
                              mark

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