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Glue(?) for shimming tool holders

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Glue(?) for shimming tool holders

Home › Forums › Manual machine tools › Glue(?) for shimming tool holders

Viewing 6 posts - 1 through 6 (of 6 total)
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  • 28 April 2017 at 14:47 #12956
    Nitai Levi
    Participant
      @nitailevi73768
      28 April 2017 at 14:47 #295360
      Nitai Levi
      Participant
        @nitailevi73768

        Hi

        I have Dickson quick change tool holders and some of them are worn (old and came with the lathe) i.e. they can't be tightened to the post. I thought about shimming them and found that approximately 0.1mm to 0.2mm shim works (depending on holder).

        I tried two types of epoxy. The problem was, I planned to trim the shim to exact size after gluing. I suspect my trimming vibrations (using a micromotor) ruined it. Cutting it to the exact size before gluing was a little difficult because it moved when gluing and I wanted to cover the maximum surface possible.

        I think maybe some type of double sided tape would be ok for this? I even considered using low temp silver solder, flattening it and heating after tightening…. but double I can heat it enough, pretty thick to get there when tightened.

        Any suggestions?

        Thanks

        28 April 2017 at 14:51 #295362
        JasonB
        Moderator
          @jasonb

          Check that the cam which pulls the "tee nut" into the post is not worn or the nut itself, I doubt it is the actual tool holder.

          Also if some of the tool holders are imports they sometimes need a bit grinding off the back as there is too much metal to allow the angled faces to seat against the post

          Edited By JasonB on 28/04/2017 14:56:53

          28 April 2017 at 14:56 #295366
          Nitai Levi
          Participant
            @nitailevi73768

            I thought it could be the post but only the oldest holders that look worn have the problem. All the other holders work fine.

            28 April 2017 at 14:56 #295367
            JohnF
            Participant
              @johnf59703

              Plus one for the cam or the 'Top Hat' locking part that locks onto the T slot in the holders — this is probably easier to make than the cam ?

              Another thought it also depends on where the tool post and the various holders were made, there is a considerable difference in dimensions of the cloned holders and tool post blocks.

              Edited By JohnF on 28/04/2017 14:59:36

              28 April 2017 at 15:17 #295372
              Vic
              Participant
                @vic

                I've got a standard four way tool post and have simply glued metal strip (gauge plate) to the bottom of a couple of indexable tool holders with Araldite.

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