Gear teeth features

[Anonymous]

Hello, 

I was hoping someone could help me model these interesting features on gear teeth. I've been trying for a long time and I have no idea.

Polišenský

[Casey.P]

Are you willing to share your file so that we can help solve your issue?

Thank you!

[JDMather]

From the tool marks you can see how it was done in the real world. 
I would do it essentially the same in Inventor.

Attach your *.ipt file here if you can’t figure it out.

(Did you Export you cosmetic tooth profile to true involute teeth?)

[Anonymous]

I think I figured it out. Anyway, I'm attaching a file so you can see how I did it. Perhaps there is a better way.

[Anonymous]

I definitely didn't change the tooth profile. I kept it as it was.

[JDMather]

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@Anonymous wrote:

I definitely didn't change the tooth profile. I kept it as it was.

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What is your purpose for this model?

If all you want is something that sort of looks OK (cosmetic) then the simplified tooth profiles might be OK, but if you want to model a real gear...

[Anonymous]

I would like to have it as real as possible. Unfortunately I don't know how to do it. Is there some sort of tutorial online?

[johnsonshiue]

Hi! The precise geometry in this case has to be created using Solid Sweep. Try defining the cutting tool and identifying the path. Next, use Solid Sweep to create the "cut" volume. Then, mirror and pattern it. Lastly, use Combine feature to cut the body.

Many thanks!

[JDMather]

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@Anonymous wrote:
Is there some sort of tutorial online?

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3:10-

[IgorMir]

Here it is. IV2020 file. The model is far from being the optimal but it might give you a starting point.
I will put some more thoughts into it later on.

Cheers,

Igor.

[WHolzwarth]

Many years ago I've been working in this industry. The procedure is called gear tooth chamfering, with special shaped milling tools.

It can be done with fixed workpiece, milling one tooth, and then rotating the workpiece to the next tooth. Two tools are working on different positions, one for each side of the roof.

Another method is done with continuous rotation of the workpiece, and synchronized motion of the tool. See an old-time video, for only one tool shown.

[IgorMir]

Thanks, Walter.
I hope - the OP will appreciate our efforts. 😊
Here is one more attempt to create the cut (IV2020). It is a bit cleaner to what I have posted yesterday. But still - the depth of cut (controlled by d77 parameter) is a manual work. I am missing something obvious in creating the cutting geometry, but can't pin point it yet.

Cheers,
Igor.