topic Re: Cone to conical hole constraint [How to?] in Inventor Forum

Cone to conical hole constraint [How to?]

j.pavlicek — Wed, 06 Jun 2018 07:05:22 GMT

Hi everyone,

I have two parts the first has conical pin and the second conical hole.
Cones have same aperture.
I want to fully put the pin in the hole.

It's possible with Inventor constraints without additional working geometry?

This is my temporary solution:

PS: I used share sketch instead of visibility because it's visible in the screencast.

Re: Cone to conical hole constraint [How to?]

admaiora — Wed, 06 Jun 2018 07:17:34 GMT

Re: Cone to conical hole constraint [How to?]

IgorMir — Wed, 06 Jun 2018 09:34:22 GMT

Hi j.pavlicek;

Since both of the parts are sharing the same origin plans you can constrain one to the other by constraining to their corresponding origin plans. Thus - there is no need for extra sketches/geometries.

Cheers,

Igor.

Re: Cone to conical hole constraint [How to?]

SBix26 — Wed, 06 Jun 2018 16:40:05 GMT

A simple mate constraint is all that's needed, assuming that the cone angles are identical. The trick is to choose the conical faces instead of the axes. When selecting the first participant, the axis of rotation is the default; but if you use Select Other, the second choice should be the face itself, and then the second participant selection easily finds the other conical face.

Hope that helps,

Sam B
Inventor Pro 2019.0.1 | Windows 7 SP1
LinkedIn

Re: Cone to conical hole constraint [How to?]

j.pavlicek — Thu, 07 Jun 2018 05:54:33 GMT

@SBix26 wrote:
A simple mate constraint is all that's needed, assuming that the cone angles are identical. The trick is to choose the conical faces instead of the axes. When selecting the first participant, the axis of rotation is the default; but if you use Select Other, the second choice should be the face itself, and then the second participant selection easily finds the other conical face.

THANK YOU!

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Fri, 18 Nov 2022 09:46:45 GMT

If you got different angles on the cones... How do you get them to tanget each other?

Re: Cone to conical hole constraint [How to?]

johnsonshiue — Fri, 18 Nov 2022 21:00:10 GMT

Hi! In your case, you will have to create an axial Mate constraint and a Tangent constraint. Please share the files here if it does not work. Forum experts can help take a look.

Many thanks!

Re: Cone to conical hole constraint [How to?]

IgorMir — Fri, 18 Nov 2022 23:55:07 GMT

Create one part. Once finished - derive that part as surface into a new part file. In there model a second part, using geometry of derived part for referencing sketches of the second part. Once done - place both parts into assembly file. Use Ground to Origin option for both of them.

Cheers,

Igor.
P.S. Sorry Johnson, I was replying to Joakim... 🙂

@johnsonshiue wrote:

Hi! In your case, you will have to create an axial Mate constraint and a Tangent constraint. Please share the files here if it does not work. Forum experts can help take a look.

Many thanks!

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Tue, 22 Nov 2022 13:37:39 GMT

Hi John Sonshiue!

Thank you for your support!

I made a quite simple assembly to share and explain the problem. One straight cylinder should be tangent inside a cone. A constraint center - center is no problem but then the edge of the cylinder shall be tangent inside the cones face. I can't find any solutions except a lot of work arounds to make these constraints with sketches or distans constraints. Ther must be some simple way to make this.

I´ll attach the files in a zip file.

Do you have any solotions?

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Tue, 22 Nov 2022 14:21:24 GMT

Hi IgorMir!

Thank you for your support! Maybe I didn´t explain so good. Check my answer to John. MESSAGE 9.

Re: Cone to conical hole constraint [How to?]

IgorMir — Wed, 23 Nov 2022 00:00:51 GMT

Hi Joakim,

I can't open your files but based on a picture you have provided with your post - I have made an assembly of my own.

Here it is, in IV2020 format.

Cheers,

Igor.

@joakim.wolgers wrote:

Hi IgorMir!

Thank you for your support! Maybe I didn´t explain so good. Check my answer to John. MESSAGE 9.

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Wed, 23 Nov 2022 10:33:31 GMT

Hello Igor!

Thank you for your assembly.

The two parts should be concentric and the cone should have smaller diameter than the axle.
The end of the axle, the edge of it, I want to be tangent at the surface inside the cone.

The only way I found to solve this is with some workaround with sketsches and work point to constranin with.

I changed your parts and assembly a bit and this is how it should be like.
Isn´t there any easyer way to do it?

I attach your files but it´s in 2022version of Inventor.

Re: Cone to conical hole constraint [How to?]

IgorMir — Thu, 24 Nov 2022 00:04:40 GMT

Yes, there is a simple and reliable way of producing design you are after. It requires using derived components. Can be done with multi-solids as well, but I preferer Derived Components way.
Here is an updated set of files.
Cheers,

Igor.

@joakim.wolgers wrote:

Hello Igor!

Thank you for your assembly.

The two parts should be concentric and the cone should have smaller diameter than the axle.
The end of the axle, the edge of it, I want to be tangent at the surface inside the cone.

The only way I found to solve this is with some workaround with sketsches and work point to constranin with.

I changed your parts and assembly a bit and this is how it should be like.
Isn´t there any easyer way to do it?

I attach your files but it´s in 2022version of Inventor.

Re: Cone to conical hole constraint [How to?]

johnsonshiue — Thu, 24 Nov 2022 02:31:03 GMT

Hi! I don't think there is a one constraint solution to solve this problem. Another alternative is creating a cone surface in the rod part. The cone surface has the same angle as the other cone face. Then the Cylindrical Face Mate will work.

Many thanks!

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Thu, 24 Nov 2022 08:14:07 GMT

Hello Igor and John!

It's possible to solve this in different ways but if someone needs to make many constraints in an assembly with different parts and needs these types of constraints it will take a long time to finish. Another option would be to make the cylinder concentric to the cone and then make a moving collision detection which stops when they touch each other. Then make the part grounded. Haven´t tryed it yet in Inventor but should work and give the same results.

Thank you ofor your support!

Re: Cone to conical hole constraint [How to?]

IgorMir — Fri, 25 Nov 2022 05:12:45 GMT

Hi Joakim,

Where did you see constrains in the latest assembly I have posted? That's one of the beauties of so called Muscular Modeling. All parts are grounded to the assembly origin on placement into the assembly. Yet they are fully updatable and get adjusted in a predictable way, should any editing be needed down the track. For most of the times I use constrains to place fittings in assembly only.

Cheers,

Igor.

@joakim.wolgers wrote:

Hello Igor and John!

It's possible to solve this in different ways but if someone needs to make many constraints in an assembly with different parts and needs these types of constraints it will take a long time to finish. Another option would be to make the cylinder concentric to the cone and then make a moving collision detection which stops when they touch each other. Then make the part grounded. Haven´t tryed it yet in Inventor but should work and give the same results.

Thank you ofor your support!

Re: Cone to conical hole constraint [How to?]

joakim.wolgers — Fri, 25 Nov 2022 07:16:13 GMT

Hello Igor!

Thank you for your support!

Well.. It will be a lot of work to make this if you use components from different sources and not modeling them all from start by yourself. Working with "skeletons" is not new for me but It's not often the imported parts from other systems have the origo in the "right" place and then you need to make this work around again and again and not concentrate on the work and put the assembly together. I read several comments on the same problem and many people would like a constraint for this so I´m not the only one.

Re: Cone to conical hole constraint [How to?]

IgorMir — Fri, 25 Nov 2022 07:47:06 GMT

Well, you didn't say anything about those two parts are coming from your supplier and not modeled by you. But now we know.

@joakim.wolgers wrote:

Hello Igor!

Thank you for your support!

Well.. It will be a lot of work to make this if you use components from different sources and not modeling them all from start by yourself. Working with "skeletons" is not new for me but It's not often the imported parts from other systems have the origo in the "right" place and then you need to make this work around again and again and not concentrate on the work and put the assembly together. I read several comments on the same problem and many people would like a constraint for this so I´m not the only one.