Create length arc for Ellipse

Create length arc for Ellipse

dusan.naus.trz
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Message 1 of 11

Create length arc for Ellipse

dusan.naus.trz
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How to create lenght arc for Elipse? It works for the arc. Not for Ellipse.

2020-05-25_12h30_18.png

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Message 2 of 11

admaiora
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You can't.

You can do it with math (integral)

Admaiora
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Message 3 of 11

dusan.naus.trz
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Hi,

Equation Curve. I guess I can't do that. 🙂

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Message 4 of 11

admaiora
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iLogic, maybe.

Admaiora
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Message 5 of 11

dusan.naus.trz
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I think that could be the solution. The dimension would be better. Maybe in the future?

((20)^2*(1-(t/40)^2))^(1/2)

2020-05-25_19h33_21.png

video link

https://www.youtube.com/watch?v=4kvJmjBOjrY

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Message 6 of 11

dusan.naus.trz
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Advisor

Yes, ilogic is an interesting sight. 🙂 I don't know what such a code would look like. 🙂

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Message 7 of 11

admaiora
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Just an idea.

The code and setting can be improved (angles, axis, etc)

 

Admaiora
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Message 8 of 11

dusan.naus.trz
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Hi,
it's nice. Why don't the lengths match 1: 1? Is it rounding?

ellipse.png

I was still trying the formula, but I think I still have a mistake there. I can't give Accepted to myself or you. I need those 5 mm. Yes, your ilogic is nice, but it affects the whole ellipse. The customer needs 5 mm for drilling.

I tried the dimensions from the customer and I don't understand why I have to put 4.8 into the formula to have a length of 5 mm. I thought the box was length.

2020-05-26_14h16_20.png

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Message 9 of 11

admaiora
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As I said the code and model needs to be processed .

It reds the perimeters, but you can subtract the linear edges to obtain the length of the angular arc.

 

 

Admaiora
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Message 10 of 11

-niels-
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Accepted solution

Do you need it for a practical purpose (drilling)?

Can't you work around it by creating a projected 3D sketch?

 

See my attached (IV2018) file, does that help?


Niels van der Veer
Inventor professional user & 3DS Max enthusiast
Vault professional user/manager
The Netherlands

Message 11 of 11

dusan.naus.trz
Advisor
Advisor

Hi,
yes, i think this may be enough for the customer. It didn't occur to me. It's very simple and practical. Yes, I think this is the solution. Yes the length is accurate. Thank you very much everyone.

lenght.png