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id cutters please

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  • id cutters please

    can anyone id these cutters ..found them in the bottom of a wooden box at a car boot sale today

    the ones that are complete have sort of micrometer dials on them







    all the best.markj

  • #2
    also found these spanners ..

    they are handy too keep around the machines ..they wont wonder off to be used for anything else.




    and shown here ...,are half the quantity of inserts i found in the same box.

    they dont look it ..but they are unused



    all the best...markj

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    • #3
      The cutters in the first picture are DeVlieg microbore inserts. Used in a boring bar they give you fine adjustment control. There are two different dials though the threads are all the same. One assumes the insert is at right angles to the centerline and the other assumes an angle. Can't remember the angle exactly but they change the number of graduations, making it an even number, and then calculate the appropriate angle so it's a little bit odd.

      You can still get them, along with replacement dials, screws, etc. and different end shapes depending on the intended task.

      I've seen specialized boring bars manufactured to turn multiple diameters simultaneously, presumably for production jobs.
      .
      "People will occasionally stumble over the truth, but most of the time they will pick themselves up and carry on" : Winston Churchill

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      • #4
        will have to keep an eye open for the heads to go with them then ..

        that's if they come in 30 taper.

        anyway ..thanks i went to the site ..looked them up and they are exactly what you say they are .

        all the best.markj

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        • #5
          Second row from bottom in your insert pics are KNUX inserts, left handed and right handed inserts. Great ones for really removing material and still widely available, though I prefer something else.
          Amount of experience is in direct proportion to the value of broken equipment.

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          • #6
            You can make your own heads they just screw in at 45؛. I have made a few. And still have one in my kit.
            Every Mans Work Is A Portrait of Him Self
            http://sites.google.com/site/machinistsite/TWO-BUDDIES
            http://s178.photobucket.com/user/lan...?sort=3&page=1

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            • #7
              Well, you're not claiming a gloat or telling us how much you paid, but those cutters are neat enough that I've got to say it...YOU SUCK!

              David
              David Kaiser
              “You can have peace. Or you can have freedom. Don't ever count on having both at once.”
              ― Robert A. Heinlein

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              • #8
                £3

                and not all is in the pictures

                i had several tool post box spanners as well out of that box

                and a few bits of hss and some grooving /parting tools you can just see in one picture

                all the best.markj

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                • #9
                  I used that type of cutter in boring bars at my first machine shop job in 1972 they were used in a NC Burgmaster to make truck axles. Yes I did mean to type NC and yes I am that old.

                  john

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                  • #10
                    Originally posted by frankie
                    I used that type of cutter in boring bars at my first machine shop job in 1972 they were used in a NC Burgmaster to make truck axles. Yes I did mean to type NC and yes I am that old.

                    john
                    I can beat that one. I used them, or something very similar, circa 1958

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                    • #11
                      TGTool was clearly too modest to post this link to a most informative thread about those micrometer boring insters:

                      http://bbs.homeshopmachinist.net/showthread.php?t=41665

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