How to best perform a Boolean/imprint/mold function?

Hello

Not being used to performing this kind of function in solidworks, I take the liberty of asking the question.

I need to reproduce a volume located between 2 geometries on either side of this volume.

For example, and to image, I have a 1/2 sphere sheet metal on the one hand and I have its symmetry on the other hand. Between these 2 sheets there is therefore an empty volume.

I don't really know which function is the most appropriate, I tried the imprint function by creating a "brut" but I don't find it very clean, I can't create the useless geometry of my stock at the end of the function.

For your information, the sheets I work on are not that simple, they are more "heat exchanger" type sheets.

Would you have a more appropriate function? Switching to surface?

Thank you.

Kind regards.

Good evening

If I read your description correctly, you have a stamped sheet metal with portions of spheres.

So if we get closer to real life (and if I understand correctly) you have two sheets of metal that will be put face to face. This means that you have to use "shape tools" which allow you to place them wherever you want with dimensioned sketches.

Check this  out http://help.solidworks.com/2019/french/SolidWorks/sldworks/c_Forming_Tools.htm?id=bfeb117b7f6d452fb27d4b8bd6c310ad#Pg0

Kind regards

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Hello

In fact, I already have these sheets.

My goal now is to create a volume of the "empty" space that presents itself when I put 2 sheets of metal facing each other.

Hello @SimonBmax 

One or more images would help to better understand your problem 

You say you have the metal sheets 

Are they a perfect symmetry?

@+

Hello @SimonBmax 

I agree with @gt22 : with images it's more meaningful.

Now, if the fingerprint function doesn't give you satisfaction, you should switch to surface as you suggest. This is what will give you the most possibilities to achieve the desired result.

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Insert the 2 sheets in a part, copy the interesting surfaces (with offset=0), build the surfaces necessary to close the volume, sew the surfaces, remove the bodies of the imported parts.

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Hello everyone and thank you for your participation,

Here is a picture of what I'm trying to do...

So I realized the "subtract" function of my sheet metal in a "blank". So we see a "recess" between 2 parts of my "rough", which corresponds to my original sheet metal.

The upper part of this stock corresponds to the "negative" of my original sheet, this is the part that interests me.

My problem here is that I don't have a solution to remove this lower part of this body. I don't have any "bodies" that have been created in my tree, to be able to select it.

Once I have managed to solve this, I will make a symmetry of my negative to have a volume of the inside of 2 sheets facing each other.

Is it a little clearer?

It was supposed to be clearer but it's not (to me).

Send images from a different angle. Attach it so that it can be enlarged.

Even better, a step anyone can open. 

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I still don't understand either
If it is the volume you want to know and only the volume of the void between the sheets, there is a proven method for calculating the contained volume.

Kind regards

Yes, that's right, it's the volume of the void contained between the 2 sheets that I want to highlight and create a 3D volume of this "void".

Unfortunately I can't share the step with you, but I made you a .sldasm for the principle.

When you open it, you see 2 sheets facing each other with particular shapes, which highlight a "space" between these 2 sheets (in red).

It is this space that I would like to model, to put in volume.

So of course, the sheet metal I have is much more complex than this one, I can't afford to do a "conversion of entities" for example and extract the whole thing...


asm_lynkoa.sldasm

 @SimonBmax

so you have a perfect symmetry

It's up to you to create a plan that is offset from your symmetry 

On this offbeat plane you create a sketch that envelops your whole room 

from there you make an extrusion to the surface 

that you have already modeled 

then via a perpendicular plane you delete via a sketch removal of material all your excess 

then you redo a symmetry of the part to the right of your symmetry 

Is it clear enough for you?

@+

 

 

1 Like

I think I understand, however, for the step of creating a perpendicular plane to remove the excess, it seems complicated to me because the "patterns" vary on the length of the plate, so I can't use the entity conversion to remove the material...

Unfortunately, the CAD file I have is strictly confidential.

 @SimonBmax

When I say perpendicular, it's perpendicular, so nothing to do with your tubes of different lengths

since you are going to cut your excess (created via your offset plane) of shape to the right of the axis of symmetry 

there on your example you have 2 sheets joined 

you keep 1 you create an offset plane parallel to your axis of symmetry 

On this plan you create a rectangle that encompasses all your room 

you do an extrusion to the surface 

inter of your sheet 1 hoping that you have only one and only one surface

you end up with a negative of your profile

having an excess since the plane shifted from your axis of symmetry 

doc via a perpendicular plane you remove your excess via material removal

then you just have to make a symmetry 

@+

Well I give the solution I thought of and which had been indicated to us by a colleague on this forum (I don't remember who! may he forgive me.)
I hope that's not what @gt22 explained because I didn't understand anything about it (not banging my head no)

Brief!

This is the calculation of the contained volume

https://www.youtube.com/watch?v=Uc3p0XyJLCo
https://www.youtube.com/watch?v=6oPtiCLmNpA
https://www.youtube.com/watch?v=V1zHcBw7hCA

Kind regards

 

 

2 Likes

Not sure I understood... What did I do wrong?


test_lynkoa_2.sldprt

 

 Hello@SimonBmax 

I couldn't open the assembly because the parts are missing. But no big deal. I made a simplified example of your sheet metal.

I traced the inner outline (red line). I extruded it in non-fusion boss and part mode. You guessed the extrusion lg it's the same as the sheet metal. I insist, not in assembly mode. You can force your assembly to be saved under sldprt so that it becomes a part. With the Mass Property tool (Evaluate tab) and by choosing the body, you can calculate all kinds of geometric properties including volume.

You have to repeat this for each volume or you can do this with a single extrusion. It's your choice. 

 

 


volume_int.zip

 Zozo_mp

It is the most elegant solution indeed.

Thank you for your help, I think the 3rd video of @Zozo_mp can help me, unfortunately I won't have the opportunity to test it before next Tuesday.

I'm testing the technique of the first 2 videos, my model is so heavy that it's been grinding for more than 10 minutes... but I don't think it can help me. I think I'm going to find myself like with the first image I shared with you, a "void" between my "raw" which corresponds to the thickness of my plates and the impossibility of "cleaning" the excess material.

@soring unfortunately my plate does not have as simple and continuous shapes as the example I showed, indeed it would have been very simple. ^^