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Dom_CHENTRE14-Alexandrite
14-Alexandrite
September 15, 2018
Solved

Spur gear exact model

  • September 15, 2018
  • 4 replies
  • 2733 views

Hi,

I have to design some teeth of a spur gear.
Depending on module, number of teeth and so on.

I need to model exact shape, because it will be manufacture by rapid prototyping.
The other gear I need to drive will be buy.
So I can't make just an approximate part, just for cosmetic purpose. 
Are there any parametric models on the web, or some tutorials ?

Thanks,
Dominique

Best answer by StephenW

Google for involute profile spur gear. There is a lot of info for them and a lot of models available. I'm not sure I would just trust any model I would download though but you could use one to help check/verify your work.

4 replies

StephenW
StephenW23-Emerald IIIAnswer
23-Emerald III
September 15, 2018

Google for involute profile spur gear. There is a lot of info for them and a lot of models available. I'm not sure I would just trust any model I would download though but you could use one to help check/verify your work.

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    October 29, 2018

    If you're "rapid prototyping" it as claimed (I assume you're using an FDM printed and plastic), then you will never get anywhere near the precision of a metal hobbed gear, so needing to have an "exact shape" is kind of absurd.

    D
    Dom_CHENTRE14-AlexandriteAuthor
    14-Alexandrite
    November 5, 2018

    It's not made using FDM but a very precise prototyping machine.

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    November 5, 2018

    Gear teeth hobbed (machined) from metal are far more exact than you'll get using any rapid prototyping machine.  If you're trying to make a set of metal gears, best just to spend the money and have them hobbed correctly.

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