topic Re: Derive from an assembly in Inventor Forum

Derive from an assembly

rodek — Tue, 31 May 2022 06:19:04 GMT

Hi,

It looks like it is not possible to derive from an assembly. (why) The derive icon only appears in a part.

Is there however a possibility to derive/make a cut out from an assembly?

I have a assembly from a shutter and wan't to derive/make a cut out of a bend in the shutter assembly.

See attached file.

Re: Derive from an assembly

CCarreiras — Tue, 31 May 2022 11:27:37 GMT

HI!

"edit" the part and cut.

Re: Derive from an assembly

JDMather — Tue, 31 May 2022 11:30:15 GMT

Copy Object

Sculpt or Split.

Attach your assembly here if you can’t figure it out.

Re: Derive from an assembly

rodek — Tue, 31 May 2022 12:12:25 GMT

Can't seem to find it out what you mean.

Can not send all the files(5) of the assembly, only 3 allowed.

Re: Derive from an assembly

rodek — Tue, 31 May 2022 12:14:28 GMT

In a zip file it worked 😉

Re: Derive from an assembly

rodek — Tue, 31 May 2022 12:16:58 GMT

It is a assembly I have to cut.
When I choose edit on one part, I can't find "cut"

Re: Derive from an assembly

CCarreiras — Tue, 31 May 2022 13:45:04 GMT

Re: Derive from an assembly

johnsonshiue — Tue, 31 May 2022 23:49:12 GMT

Hi! The reason why Derive isn't available in the context of an assembly is that Derive isn't a suitable workflow in such situation. Technically, Derive is out-of-context geometry referencing. This means, the derived source and the derived part aren't aware of their context. Certainly, the shape change in the source does push to the derived part. But, it is limited to the derived objects, irrespective of how the geometry was changed or where the change happened. Derived part can stand by itself.

In order to borrow geometry from another component within the same assembly, Adaptive is required. It can be projecting edges, the face loops, or copying the entire body geometry from another component within the assembly. Such relationship only makes sense within that particular assembly, not elsewhere.

Many thanks!

Re: Derive from an assembly

rodek — Wed, 01 Jun 2022 05:36:03 GMT

Hi CCarreiras,

Thanks for your comments.

However , I don't want to make a cut out in the bend, but I want to use the bend to make a cut out in assembly of the shutter. I want that the shape of the bend cut's out the side plates of the shutter. If I edit just one sideplate of the shutter, make a sketch and want to prosject the geometry of the bend, you can't select it.

Re: Derive from an assembly

rodek — Wed, 01 Jun 2022 06:35:46 GMT

Hi,

I have a solution some works fine for me.

If I make the cut in the bend first, than I can use that to make the cut-out in the side plates.

It doesn't deserve the beauty pris, but it works fine enough for me.

Thanks for your help.

Re: Derive from an assembly

CCarreiras — Wed, 01 Jun 2022 08:16:13 GMT

I thought it was the opposite, cut the bend...

...Well...The way to do it is to copy the bend surface to the parts you need to cut and use the copied surface as a reference for the cut.

Re: Derive from an assembly

rodek — Wed, 01 Jun 2022 11:45:22 GMT

I've tried what you said,"copy the bend surface to the parts you need to cut and use the copied surface as a reference for the cut" but don't succeed how to do it.

Re: Derive from an assembly

JDMather — Wed, 01 Jun 2022 12:44:34 GMT

@rodek wrote:

I have a solution some works fine for me.

Attach your solution here and I will demonstrate how I would have done it.

Re: Derive from an assembly

rodek — Thu, 02 Jun 2022 05:15:42 GMT

Hi JD,

Hereby the solution as I have done it.

Looking forward to your solution.

Re: Derive from an assembly

JDMather — Thu, 02 Jun 2022 12:19:48 GMT

I would have probably used a multi-body master technique instead, but your Adaptive technique is fine.

I would caution you to fully define your sketches though...

This line is missing a Coincident of endpoint between line and curve and a Tangent to the curve.

Re: Derive from an assembly

rodek — Thu, 02 Jun 2022 12:52:37 GMT

With a multi-body object, if I don't get wrong, we don't get the right parts list in our drawings.

Thanks for your help.

Re: Derive from an assembly

johnsonshiue — Thu, 02 Jun 2022 23:25:36 GMT

Hi! Inventor BOM is only available in an assembly. Once you create a multi-solid body part, you need to use Make Components workflow to push each solid as a part in a hosting assembly. In this way, the multi-solid body part drives the shape change. All the documentation and annotation are done on the assembly.

Many thanks!

Re: Derive from an assembly

JDMather — Fri, 03 Jun 2022 11:41:14 GMT

@rodek wrote:

With a multi-body object, if I don't get wrong, we don't get the right parts list in our drawings.

As noted by @johnsonshiue you must push out the parts and assembly (Manage>Make Components).

This is an automated derived component.

You could also manually derive component.

It will work for correct part list - post back if you need example. (The end result is essentially the same as Adaptive.)