how to make teeth on a surface?

how to make teeth on a surface?

chandosb90
Explorer Explorer
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Message 1 of 26

how to make teeth on a surface?

chandosb90
Explorer
Explorer

PXL_20240309_013214932.jpg

im trying to make this part and i cant figure out how to make the teeth/splines. someone please help, im a new fusion user and havent done cad in years.

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Accepted solutions (2)
3,970 Views
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Replies (25)
Message 21 of 26

chandosb90
Explorer
Explorer

they only taper towards the center because i dont know what im doing. they are not supposed to taper, but i dont know how to achieve that.

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Message 22 of 26

evanp4509U4JZ
Collaborator
Collaborator

Sorry to sound so dense but, where do I find the Parameter dialog box? If I want to create a user parameter how do I go about that?

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Message 23 of 26

jhackney1972
Consultant
Consultant

You need to start a new thread!  I created a quick video showing the creation and use of three User Driven parameters.

 

John Hackney, Retired
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Message 24 of 26

laughingcreek
Mentor
Mentor

@chandosb90 wrote:

...the only "spec" that has to be corrected is the angle of the valley of the teeth has to be 90 degrees, ...


so in my model  I swept a solid, scaling the profile down using a path and rail.   valley and peak angle of the resulting solid will be extremely close to the  angle of the profile at high tooth counts.  probably closes enough, but maybe not.  if you need to nail the valley angle, the process would be much the same, but instead of doing a scaled sweep the way I've done, you would so a sweep along a path that defines the peak line with no scaling. (or a sweep cut defined by the valley line)

I suggest exploring the provided model a bit and understanding what was done before moving on.

 

in sketch 2, the angle of the peak is being driven by the height of the tooth (the provided spec)-

laughingcreek_0-1710278673710.png

you can change the .03 dimension to a driven one and then define an angle at the peak-

laughingcreek_1-1710278790496.png

this angle is extremely close (particularly at high tooth counts) to the peak and valley angles-

laughingcreek_2-1710279267925.png

 

study the model. ask questions.

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Message 25 of 26

laughingcreek
Mentor
Mentor

scratch the "extremely close" bit. I was measuring the angle the wrong way.  the angle of the peaks and valleys is equal to the angle given to the triangle in sketch 2-

laughingcreek_0-1710280206323.png

 

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Message 26 of 26

evanp4509U4JZ
Collaborator
Collaborator

Thank you very much. I've seen it referred to but never explained.

Sorry to threadjack.

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