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How do I do mate connection for 90deg gear in assembler

RyanAveryRyanAvery Member Posts: 66 EDU

How do I do the mate connector for this? I have 2x 45degree angled gears and I want them to rotate eachother. 
Anyone know how to make this gear relationship? When I try the mate connectors it doesn't line up perfectly. 

Best Answers

Answers

  • brucebartlettbrucebartlett Member, OS Professional, Mentor Posts: 1,629 PRO
    Use 2 revolute mates to get the rotation in the directions as shown. Then link them with the gear mate at the desired ratio. Gear mate is really just a way to link the existing revolute mates via a ratio and rotation direction. 
    Engineer ı Product Designer ı Onshape Consulting Partner
    Twitter: @onshapetricks  & @babart1977   
  • RyanAveryRyanAvery Member Posts: 66 EDU
    When I do that the gears move to be end to end as if it is one large gear instead of 2, one on top of the other. 
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    If you post a link to your document I'm sure somebody will sort it out for you  :)
    Production Engineer
    HWM-Water Ltd
  • philip_thomasphilip_thomas Member, Onshape Employees, Developers Posts: 1,103
    Philip Thomas - Onshape
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    ^^^^^ :)
    Production Engineer
    HWM-Water Ltd
  • RyanAveryRyanAvery Member Posts: 66 EDU
    edited April 16
    https://cad.onshape.com/documents/cb0d31c8ba2be4f0f4f7a473/w/89e55966149663d6912f825e/e/71ccc386bbc72853442b0106

    I would like to have the gears be at right angles to each other. The gears are twisted at 45 degrees so I think it should work. 
    I'm comp sci not engineering so I'm not sure how it all works at the moment. 
  • RyanAveryRyanAvery Member Posts: 66 EDU
    I'd like to know how to do it not just have it done for me though! 
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    Working on it...
    Production Engineer
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    edited April 16
    OK.

    First stab at it here.

    Take3
    https://cad.onshape.com/documents/93f5d20d6703cafeda99e0cf/w/51f8bd2bf7a63edbef6033ad/e/fbc877d30a05748467e19fea  

    As for the knowing how to do it that's the great thing about parametric cad, you can use the roll back bar in the part studio to step through what was done. :)

    We need to treat each part individually and then make them move together.

    Steps.

    (1) To make the handle or shaft spin we use revolute mates.  They need something to mate to so I've made a rudimentary base but anything will do.

    (2) Once we have the base I've put mate connectors in appropriate places (all still in the part studio.)

    (3) Then we go to the assembly and make the revolutes.

    (4) Once they work OK we add a gear relation between them.

    If we look at the assembly in cross-section we can see they don't quite mesh.  This can be fixed with by rotating one of the mates to suit back in the part studio:-


    I've left that step, and mating the secondary :p shaft for you 


    Hope that helps, if not please shout.

    Cheers,
    Owen S.

    Production Engineer
    HWM-Water Ltd
  • RyanAveryRyanAvery Member Posts: 66 EDU
    edited April 16
    I get this message when I click your link:
    Failed to load document for workspace. Resource does not exist, or you do not have permission to access it.
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    That's because I'm an idiot.  Hang on a minute.

    Owen S.
    Production Engineer
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    Document is erm, ah, public now o:)

    Please try it again.

    Ta,

    Owen S.
    Production Engineer
    HWM-Water Ltd
  • RyanAveryRyanAvery Member Posts: 66 EDU
    Link doesn't work now 
  • RyanAveryRyanAvery Member Posts: 66 EDU
    Thanks for the help though 
  • RyanAveryRyanAvery Member Posts: 66 EDU
    Works great, thanks a lot! I will try to understand how you did it now. 
    Thanks for the help
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,180 PRO
    So sorry, been at work for 11hours so far am a bit fried, please give it another go.
    Dude, that's less than half a day.. :D
    //rami
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    You're not wrong, but I'm not self employed...

    ...also there's no food here!

    Owen S.
    Production Engineer
    HWM-Water Ltd
  • philip_thomasphilip_thomas Member, Onshape Employees, Developers Posts: 1,103
    Rami - I have seen Owens desk - also there's no food and the coffee sucks! :)
    Philip Thomas - Onshape
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    edited April 17
    If there are no photographs it never happened, but he's right about the coffee, I wouldn't even insult an American resident by offering it to them!

    O.S.
    Production Engineer
    HWM-Water Ltd
  • owen_sparksowen_sparks Member, Developers Posts: 1,607 PRO
    We're good at sheep though, and more importantly beer.
    Production Engineer
    HWM-Water Ltd
  • 3dcad3dcad Member, OS Professional, Mentor Posts: 2,180 PRO
    So you wen't home to have a beer and kebab - that is acceptable if you hang in Onshape forums at least few more hours to call it a day.
    //rami
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