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    Elliptic Gears

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    • E Offline
      enhydra
      last edited by

      I was looking for a plugin, that helps generating elliptic gears. As long as I do standard gears, I am fine with the involute gear plugin. So I sliced two different gears and merged them (see image below). But is there a proper way to generate an elliptic gear?


      EllipticGearDraft.jpg

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      • Chris FullmerC Offline
        Chris Fullmer
        last edited by

        I'm going to guess that if the involute gear plugin does not support elliptic gears, then there probably is no plugin for it.

        You could contact CADalog and see if they'll incorporate it though.

        Lately you've been tan, suspicious for the winter.
        All my Plugins I've written

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        • pilouP Offline
          pilou
          last edited by

          there is link inside the text
          Don't know if it's free and the export format

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

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          • E Offline
            enhydra
            last edited by

            Hi

            @unknownuser said:

            there is link inside the text
            Don't know if it's free and the export format

            I know this tool. It seems promising. πŸ˜„ But the guy has not decided yet, how he wants to publish it. By now there is no export format.

            Regards
            Kurt

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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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