3D printing - A look at the FreeCAD Gears Workbench

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  • Опубликовано: 24 ноя 2024

Комментарии • 29

  • @owlcricker-k7ulm
    @owlcricker-k7ulm 26 дней назад +4

    It is nice to see you feeling well enough to engage in strenuous mental challenges!

  • @hawkinscsa
    @hawkinscsa 26 дней назад +2

    That really simplifies gears!

  • @lysippus
    @lysippus 26 дней назад

    thanks for these 3d printing videos, its getting myself back 'in gear' for more printing projects

  • @SpinStar1956
    @SpinStar1956 26 дней назад +3

    Hi Kevin, good to see you again!
    73…

  • @DonDegidio
    @DonDegidio 26 дней назад

    Hi Kevin,
    Hope your health is still improving. Great explanation on how to make gears in FreeCad. Easily understood. Stay safe. 73 WJ3U

  • @Davidjb37721
    @Davidjb37721 26 дней назад

    Thanks for your help 😊

  • @RESlusher
    @RESlusher 26 дней назад

    Ooooooh, thanks Kevin! Now you've got me looking at getting one of those fancy 3D printers! 😁

  • @LudwigSpiegel
    @LudwigSpiegel 26 дней назад

    Thank you for sharing

  • @moimeme8696
    @moimeme8696 26 дней назад

    Tnx from FarWest of France

  • @sleepib
    @sleepib 26 дней назад

    Better to set the clearance/backlash in the gear data rather than scaling in the slicer.
    If you're trying to match another gear, pressure angle also matters. If you don't know, you can put the mating gear on a flatbed scanner, make a copy of it, then tweak pressure angle until the tooth profile looks right, and then look if it's close to something commonly used, like 20 or 14.5 degrees.
    Also, if you're using plain helical gears rather than herringbone, the beta of mating gears should be the same number but opposite sign.

    • @loughkb
      @loughkb  26 дней назад

      3D printer dimensional accuracy varies quite a bit. Many of the lower end printers will error as much as 1 to 2/10 of a millimeter. Since the people that are downloading the model don't have access to the CAD file, scaling in the slicer is the only option they have.
      Thanks for the rest of that information though, very helpful.

  • @protektwar
    @protektwar 26 дней назад

    nice tutorial! I know there should be another rule for the gears which says that the teeth of the wheels at the starting point should not meet, once the compete rotation of the big wheel is performed. meaning the sun and planetary should be different in size / nr of teeth.

    • @loughkb
      @loughkb  26 дней назад +2

      Well I have seen several planetary arrangements where the sun and planet gears are the same size and number of teeth. And they seem to work just fine. I just built a dual stacked planetary transmission with a ratio of 16 to 1 and it's smooth as butter. And the planetary and sun gears have the same number and size of teeth.

  • @jeremiahbullfrog9288
    @jeremiahbullfrog9288 3 дня назад

    This item could be printed in place pre-assembled. How would I go about arranging the gears properly in FreeCad? Thanks

    • @loughkb
      @loughkb  3 дня назад +1

      First, you would have to scale each gear down so that there is about 0.2 mm clearance between each of them. You could probably do that in the Part workbench. You could duplicate the planet gears as separate parts in part workbench. Then you would have to use transform to position them all in place. Once they're all in place, you could create a compound of them all in Part workbench and export the compound as an STL file.

    • @jeremiahbullfrog9288
      @jeremiahbullfrog9288 2 дня назад

      @@loughkb Thanks I'll try it out tonight

  • @gmanshackshack6822
    @gmanshackshack6822 26 дней назад

    How do you know where to place axles so the gears mesh?

    • @loughkb
      @loughkb  26 дней назад +1

      There are two diameters listed in the data for the gear. Well, three actually. The first two are a diameter to the outer edge of the teeth and then a diameter to the root of the teeth. Those two are the ones you need. You cut them in half to get the radius, and then the distance between the center of the gears is 1 plus the other. The radius out to the end of the teeth on one gear plus the radius to the root of the teeth on the other gear is the distance between the center points.

  • @kiethcrimin2837
    @kiethcrimin2837 26 дней назад

    Howdy, see ya soon😅

  • @bentrider1972
    @bentrider1972 26 дней назад

    Sadly i can not print the ring gear..Print is being filled in and a top and bottom is on it :/

    • @loughkb
      @loughkb  26 дней назад

      It's got to be a setting in your slicer.
      If you're using Cura, make sure "Remove all holes" is turned off.

    • @ianhoworth7298
      @ianhoworth7298 25 дней назад

      @@loughkb I had the same problem, the fix was to remove the chamfers on the outside of the ring gear.

    • @loughkb
      @loughkb  25 дней назад

      That's very strange. What slicer are you using.? There's no logical reason that that feature of the geometry would cause that behavior. Unless maybe you set the chamfer too deep and it intersected with the root of the gear teeth? No, That couldn't have been it freeCAD would have failed the chamfer if it crossed edges.

    • @bentrider1972
      @bentrider1972 24 дня назад

      @@loughkb Ok I got it to print but had to come up with my own fix kinda..After trying every slicer I have (Creality,FreeCad,and Cura) I pulled it into TinkerCad and zoomed in you see all the huge holes that were stopping it..I made a new outside ring to go on the outside of the gear teeth and it now prints great 😁...Only problem I have now is trying to keep one for myself..Everyone that sees it wants it LOL

    • @loughkb
      @loughkb  24 дня назад

      I just went and checked the model file on thingiverse and it was borked. I don't know how that happened! I've fixed the file so nobody else will have trouble with it. I hope.

  • @Charles-g5d7k
    @Charles-g5d7k 26 дней назад

    🛵🛵🛵🛵🛵🛵🛵👋🏻