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    Elliptic Gears

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    • gillesG Offline
      gilles
      last edited by

      Component Stringer could help.

      http://sketchucation.com/forums/viewtopic.php?f=79&t=48477&hilit=component+stringer#p435378

      " c'est curieux chez les marins ce besoin de faire des phrases "

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      • GaieusG Offline
        Gaieus
        last edited by

        @gilles said:

        Component Stringer could help.

        http://sketchucation.com/forums/viewtopic.php?f=79&t=48477&hilit=component+stringer#p435378

        Component stringer AND Ddider's ellipse plugin: http://rhin.crai.archi.fr/rld/plugin_details.php?id=124
        as it makes ellipses with equal segments.

        Gai...

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        • Jean LemireJ Offline
          Jean Lemire
          last edited by

          Hi enhydra, hi folks.

          In your image, you show two small circular gears meshed with a larger elliptical one.

          For this to work, you need a way to accomodate changes in axis distance.

          Normally, elliptical gears are meshed with other elliptical gears.

          See this web page for some formula:

          http://www.technicaljournalsonline.com/ijaers/VOL%20II/IJAERS%20VOL%20II%20ISSUE%20I%20%20OCTBER%20DECEMBER%202012/225.pdf

          You will see that defining the exact shape for the teeth is not so simple.

          Just ideas.

          Jean (Johnny) Lemire from Repentigny, Quebec, Canada.

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          • pilouP Offline
            pilou
            last edited by

            Even not elliptical gears are no so simple too πŸ˜„
            38 parameters! πŸ€“


            gears.jpg

            Frenchy Pilou
            Is beautiful that please without concept!
            My Little site :)

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            • Jean LemireJ Offline
              Jean Lemire
              last edited by

              Hi Pilou, hi folks.

              You are right. Imagine with square gears. Yes, they exist.

              See this page:

              Link Preview Image
              Non-circular gear - Wikipedia

              favicon

              (en.wikipedia.org)

              And this one for even more strange looking shapes for gears. Look for the fish shaped one at mid length. Really funny.

              Just ideas.

              Jean (Johnny) Lemire from Repentigny, Quebec, Canada.

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              • E Offline
                enhydra
                last edited by

                @gilles said:

                Component Stringer could help.
                http://sketchucation.com/forums/viewtopic.php?f=79&t=48477&hilit=component+stringer#p435378

                Thanks for replying πŸ˜„

                @gilles & by Gaieus: I will take a look at these two plugins. Hope they do the job. πŸ‘

                @Jean Lemire:

                @unknownuser said:

                you need a way to accomodate changes in axis distance

                Yes, I am aware of that. πŸ˜‰ Take a look at http://skfb.ly/5k3ecba. A rubber band will press the smaller gear towards the elliptic gear.
                You get the point: Dealing with gears is quite challenging. But

                @Pilou
                I am not bothered by all of the 38 parameters. πŸ˜‰

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                • pilouP Offline
                  pilou
                  last edited by

                  Terrific gears indeed!
                  And crazzy wood clocks 😲

                  Frenchy Pilou
                  Is beautiful that please without concept!
                  My Little site :)

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                  • E Offline
                    enhydra
                    last edited by

                    @unknownuser said:

                    Terrific gears indeed!
                    And crazzy wood clocks 😲

                    I wish I had a laser cutter in the basement. πŸ˜‰

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                    • PixeroP Offline
                      Pixero
                      last edited by

                      Kind of reminds me of the intro to the old Swedish TV show Tekniskt Magasin.

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                      • D Offline
                        driven
                        last edited by

                        you could reverse engineer this one...
                        11mb and v6
                        https://dl.dropbox.com/u/25114184/Clark_67.skp

                        edit forgot to add superelipse plugin may help http://sketchucation.com/forums/viewtopic.php?t=29061

                        learn from the mistakes of others, you may not live long enough to make them all yourself...

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                        • E Offline
                          enhydra
                          last edited by

                          Unfortunately the plugin "Compnent Stringer" won't work for this kind of problem. Especially if you are interessted in a proper solution. For makers and tinkerers the plugin and also my way are good enough. πŸ˜‰

                          Look at: http://www.thingiverse.com/thing;57771

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                          • gillesG Offline
                            gilles
                            last edited by

                            For those who enjoy fine mechanics:

                            http://kmoddl.library.cornell.edu/model.php?m=689&movie=hide


                            1357.jpg

                            " c'est curieux chez les marins ce besoin de faire des phrases "

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