Trihedral Model

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  • Trihedral Model

    Does anyone know where I could find the trihedral models that you can leave at your CMM to reference back to when making your alignments? I saw them at the Charlotte training facility. Any ideas?

    Thanks!
    Josh
    ~Josh~ Giles Rescue "Ut ceteri vivant"

  • #2
    Yes, just use a sharpe and the Right Hand Rule. http://images.google.com/imgres?imgu...lr%3D%26sa%3DG
    http://www.netcomuk.co.uk/~jenolive/vecunit.gif
    sigpicSummer Time. Gotta Love it!

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    • #3
      I'm referring to a little replica of this, that sits on your cmm. One that is machined. Nice picture though!
      ~Josh~ Giles Rescue "Ut ceteri vivant"

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      • #4
        You could just take a block of wood and jam golf tees into it or a block of aluminum with dowels if you really, really need to have a visual aid. I made one with wood and golf tees awhile back to help when training new operators.
        DCCFreak

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        • #5
          I took a small block of plastic. Drilled holes in it. Screwed dowel pins in it and wrote on each side of the block. Took about an hour and cost about 4 bucks.
          sigpic.....Its called golf because all the other 4 letter words were taken

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          • #6
            I used a square block of aluminum, and wrote X+..... on the sides.
            sigpic Life is not a journey to the grave with the intention of arriving safely, but rather a skid in broadside, totally worn, proclaiming WOW What a ride!

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            • #7
              B&S used to sell 'em at the training centers. One of the guys asked about them when the instructor was using one in a demo. Think they were something like $30! I use the right hand thingie. I've never lost or had it stolen, yet...
              Index finger=X
              Thumb=Z
              Mid finger=Y
              Last edited by Rick Coleman; 08-30-2006, 03:01 PM.
              sigpic:eek: Bring out the comfy chair!:eek:

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              • #8
                My monkeys came up with a not so pretty trick that seems to work for them. I was not impressed but sometimes monkey-speak is the best language.

                Craig
                <internet bumper sticker goes here>

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                • #9
                  Originally posted by jkb_mcg
                  Does anyone know where I could find the trihedral models that you can leave at your CMM to reference back to when making your alignments? I saw them at the Charlotte training facility. Any ideas?
                  Start with a piece of beryllium-copper; 4" x 6" x 7.375".
                  Have this ground square within .00047".
                  Drill 3 holes in one side. Tap two of the holes 1/4-28 and the other 4-40.
                  Cover the 4-40 hole with 2-sided tape.
                  Stick this to the bottom of the chair at the CMM workstation.

                  See how easy it can be. Just need a little ingenuity
                  Lately, it occurs to me
                  What a long, strange trip it's been.

                  2017 R1 (Offline programming)

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                  • #10
                    The last place I worked I made one out of Tinkertoys that were laying around. Don't ask me what they were doing there though.
                    Worked well.
                    sigpic

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                    • #11
                      I took three little pieces of quarter inch key stock and had the welders make mine. I then took paint marker and painted the ends red white and blue. I haven't used it in a long time, but back when I started it was a good little reference tool.

                      Bill

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                      • #12
                        Mine is a piece of paper.

                        1. cut out square
                        2. fold along both diagonals
                        3. cut out one of the sections
                        4. fold into the trihedron
                        5. tape together
                        6. label

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                        • #13
                          Originally posted by keith
                          Mine is a piece of paper.

                          1. cut out square
                          2. fold along both diagonals
                          3. cut out one of the sections
                          4. fold into the trihedron
                          5. tape together
                          6. label
                          Can you elaborate on step 4? Maybe a pic? TIA
                          sigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery

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                          • #14
                            Originally posted by Wes Cisco
                            Can you elaborate on step 4? Maybe a pic? TIA
                            http://www.learner.org/jnorth/images...igamiWhoop.jpg
                            <internet bumper sticker goes here>

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                            • #15
                              I sucked up to the very cute sales rep when she was in. Got one in the mail a few days later. (She was hot, gone from B&S now.)
                              When in doubt, post code. A second set of eyes might see something you missed.
                              sigpic

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