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how to substract bodies (parts)?

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Message 1 of 15
kmeldfreyssinet
1120 Views, 14 Replies

how to substract bodies (parts)?

Hi,

I am now modeling elements for silicone formwork for casting elements of epoxy resien.

 

I would like to schow idea of this formwork. For this I would like to make part representing silicone part of this formwork. It is contained in aluminium "cover" for convenience of use.

 

In assembly I have placed may model, and aluminium elements representing "cover" of formwork.

 

I am trying now to model silicon but it is quite hard. I can not use "derivered part" method to substract model and cover elements from some big block body because coordinate systems do not mach in all elements.

 

In Part there is "combine" function but it only works with bodies mabe within this part.

Is it possible to substract one placed in assembly from anothe part in this assemby?

 

Cris.

14 REPLIES 14
Message 2 of 15
CAD-One
in reply to: kmeldfreyssinet


Just like mold cavity feature in SW? I doubt if this kind of feature is currently there in inventor
C1
Inventor Professional 2020
Vault Professional 2020
AutoCAD 2020
Message 3 of 15
JDMather
in reply to: CAD-One


@CAD-One wrote:

Just like mold cavity feature in SW? I doubt if this kind of feature is currently there in inventor

Sounds lilke you need training in Inventor.


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Message 4 of 15
JDMather
in reply to: kmeldfreyssinet

This is easy.

Attach your assembly here.


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Message 5 of 15
CAD-One
in reply to: kmeldfreyssinet

Good to know there one. I often run into this kind of need too. Waiting to see the files.
C1
Inventor Professional 2020
Vault Professional 2020
AutoCAD 2020
Message 6 of 15

Hi kmeldfreyssinet,

 

You can place and postioon the components in an assembly and then edit the base part from within the assembly, and use the Copy Object tool to bring in the other part(s) as separate solids. Then you can use the Combine tool to subtract. This link shows this workflow in a video.

 

http://youtu.be/6JpK2bEJP-I

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com

 

Message 7 of 15

Hi,

 

It is something like I want to do.

But I see one problem with this solution for future - it will not be adaptive I suppose.

 

In the meantime I came up with a solution like this:

I made all parts in the way they coordinate sustems match and then use derivered part method to substract some parts.

But this will only work fine for very small assembliwes.

 

 

I will post my files later tooday. mayby someone has other ideas.

 

Cris

Message 8 of 15
JDMather
in reply to: kmeldfreyssinet


@kmeldfreyssinet wrote:

I made all parts in the way they coordinate sustems match and then use derivered part method to substract some parts.

 


You do not need to do this.

There are several ways to get the results you are after.

The "best" way depends on what you have to start with.

That is why I requested the files rather than suggesting a "solution".


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Message 9 of 15

Hi kmeldfreyssinet,

 

If you need to keep it adaptive, you can use the Copy Object tool, but select the Composite option with the Associative checkbox selected, rather than the new Solid option. Then you can use the Sculpt tool to make it a solid. This will make it adaptive.

 

But as JDMather mentioned, there might be a better way to go about it, depending upon what you're working with.

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com


Message 10 of 15

Hi,

here are some files. I had made some simplificatons compearing to actual model in order not to send my clients original files, byt for exumple purposes it will be enough.

 

So in "tech 1.iam" there are 4 parts:

- two are aluminium casing elements

- there is model of part I want to make mould for

- one is roughly modeled silicone part.

 

I had made only simple shape of silicone. now I would like to substract model of part and one of aluminium elements that is overlaping with silicone part from it.

 

Cris

 

 

Message 11 of 15

Hi kmeldfreyssinet,

 

Here is the method I mentioned demonstrated in a short video, using your files. You'll notice the result is that "silicon tech 1" is adaptive to changes made in the aluminum part, "flexi dno_obudowa 1". Again, there might be other ways to go about it.

 

http://www.screencast.com/t/u8HhM7lSRr6r

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com


Message 12 of 15
CAD-One
in reply to: Curtis_Waguespack

Curtis,

 

This is a great tool. Do you mind sharing the data set, please.

Also, are there any other videos for demonstrating sculpt tool.

 

Thanks

C1

C1
Inventor Professional 2020
Vault Professional 2020
AutoCAD 2020
Message 13 of 15
Curtis_Waguespack
in reply to: CAD-One

Hi CAD-One,

 

The files I used in the Jing video, were the ones provided by kmeldfreyssinet in the zip file. I don't think I have the files used in the Youtube video any longer.

 

Also see this link.

http://wikihelp.autodesk.com/Inventor/enu/2013/Help/3364-Show_Me_3364/3365-Show_Me_3365/3516-Parts_-...

 

I hope this helps.
Best of luck to you in all of your Inventor pursuits,
Curtis
http://inventortrenches.blogspot.com


Message 14 of 15
CAD-One
in reply to: kmeldfreyssinet

JD, you are right after all. This is a great tool.
C1
Inventor Professional 2020
Vault Professional 2020
AutoCAD 2020
Message 15 of 15
JDMather
in reply to: CAD-One


CAD-One wrote:
JD, you are right after all.


 

There was doubt?   Smiley Mad


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