NORMAL SWEPT MATERIAL REMOVAL IN THE CENTER OF A TUBE (laser cutting)

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Hello

Try with my fold-out tube via sheet metal configuration. Here are some tutorials I made for sheet metal tubes

https://www.lynkoa.com/contenu/pr%C3%A9paration-dun-tube-carr%C3%A9-en-t%C3%B4lerie-pour-le-laser-tube

https://www.lynkoa.com/contenu/comment-d%C3%A9plier-un-tube-carr%C3%A9-les-configurations

https://www.lynkoa.com/contenu/comment-r%C3%A9aliser-un-serpentin-d%C3%A9pliable-par-configuration-0

https://www.lynkoa.com/contenu/comment-d%C3%A9plier-un-tube-0

https://www.lynkoa.com/contenu/astuce-pour-d%C3%A9plier-un-fer-rond-0

 

 

 


tube_cintre_en_tolerie.sldprt
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8

Thank you AC COBRA 427 !!

So now, you're going to help me a lot in my job. We have just integrated the boilermaking into our factory and I therefore have a lot of tube bending to develop, decomposition of mechanically welded elements... GREAT all of your tutorials.

If you have something for the wolf's faces, I'm all for it. Even if with my method I got out of it, there may be simpler things.

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I proceed in the same way for a straight tube and for curved ones I fiddle with because I haven't found the simpler solution yet.

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Hello @m.legras

I figured out how to do it (it seems to me) except that I don't know if the laser beam is doing towards the center as I did.

It's quite simple if you tolerate a very slight imperfection

Look at the cross-sectional images (in the zip) and let me know what you think. If it's good, I'll make you a mini-tutorial

Kind regards

 


2020-04-16_14_37_06-window.zip
1 Like
11

zozo_mp,

Tube thickness cutouts should be perpendicular to the thickness like a sheet metal cut. The laser beam goes towards the center of the tube. The laser head rotates around the axis of the tube to make the cuts.

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12

Hi @ all

me my problem

with the normal cutouts to the profile

of the 2 bodies

This is the junction of the 2 bodies 

I'm not convinced that it goes well 

It is true that depending on the thickness we should have a clearance for a good weld that corresponds to the thickness of the said tubes

@+

 

13

Hello @gt22

There is always the solution of a filing / finishing beveling for the case of glued or interlocking joints, but as you say, for welded parts a space is preferable.

Cdt

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Bravo @m.legras

That's high-flying!

Forget my solution, it does not correspond to the laser cutting in the center as you want it which in fact and always perpendicular to the tangency point.

On the other hand , is it your drawing that will be used to control the Laser tube because you have defects on the surface after laser cutting on your model?

Kind regards

15

Hello

I tried a little on my side, I used the "Winding" function.

Maybe my method (provided in pj) could help you. 

To have a well-defined shape, you will have to fiddle with the equations but it should be possible.

Kind regards

Gauthik


gueule_de_loup.pdf
1 Like
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Hello @Gauthik67

Thank you for the technique, I like it a lot!

Cdt

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Hi all

I hope I have understood the question well and not created redundancy with respect to the answers already given.

For my part, I suggest going through thickened surfaces:

Step 1: Create the (outer) surfaces by scanning

Step 2: Restrict the surface area of the tube that will be cut

Step 3: thicken the outer surfaces to obtain the tubes

I attach my 2019 version of my coin in PJ.

Disadvantages:

  • The thicken function sometimes fails for reasons I don't know (in my piece, if I want to make a wolf's geule on each side, I have to cut my tube into two halves first);
  • The tubes created are not foldable , unlike sheet metal solutions such as those offered by ac cobra 427. That said, we can get around this by creating the first surfaces not by scanning but by copying the outer surfaces of a fold-out tube by the offset surface function (using an offset of 0).

Advantage:

  • It allows you to create the play between pieces suggested by gt22 by using offset surfaces before making the surface restriction. Because in some cases, the laser-cut tubes really don't fit together.

geule_de_loup.sldprt
1 Like
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Thank you all for your involvement in this post

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Thank you all for your involvement in this post 

As AC COBRA 427 said, the laser nozzle is always perpendicular to the surface of the tube and focused on the center of the tube. Hence the complexity of the surface area generated ...

It's super interesting to discover all your solutions. The winding is awesome Gauthik!

But it must be complicated to draw the shape corresponding to the connection on a tube bend, right?

For the thickened surfaces, mgauroy, I reworked your file. You have to take the inner surface and then thicken. It also works very well. I haven't tried on a link on an elbow yet. But the solution is also interesting.

1 Like
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Big bug this morning on the forum for me. I see that my post has gone into solved when not necessarily! And impossible to put screenshots...

Anyone know how to uncheck the resolution of the problem?

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Hello @ m legras

It's nice to thank all the people who contributed to this com thread to try to solve your problem and we thank you for it

But do you really think that this is the best answer, the one that is designated 

have a nice day @+ ;-) 

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Here is my assembly for analysis if you like.

 

gueule_de_loup_cintrage.zip
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Sorry, big bug this morning, I had typed a novel to thank everyone and take stock of the answers and once published, there was only the first sentence and my message got through and validated as a better answer!! ... Nothing understood and in no way do I think my post is finalized. There are plenty of good answers in there and you just have to test everything. I hope it's as interesting for you as it is for me. A BIG thank you to all in any case

3 Likes
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Hello @m.legras

"Anyone know how to uncheck the resolution of the problem? "

This is not possible, we will have to tick another "best answer" to replace it.

Kind regards.

2 Likes
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I have a simple 2-step solution if anyone is still interested...

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Hello @tarikc24 ,

 

Yes, I'm interested. Especially since I'm on the same subject but for rectangular tubes.

I have a solution by surfaces following the path of the beam but if you do it in 2 steps, I'm interested !!