Thank you for your answers,
Bart, I converted my tube to sheet metal and then ticked the "Normal material removal" option but this manip gives me an amazing result .
See images
To follow the idea of @Bart, try in your sketch not to leave the arc Ø42.4, but to cut wider in the upper part. It can come from there!
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Benoit.LF, same result as with the previous sketch.
Just a silly question: is it the same function (or sketch) applied in the 2 softwares?
i.e. do you do a tube/tube removal like what you drew on SW?
Because if you take your laser head fixed, your tube rotates on itself to be cut, you don't get the shape of SW, but a propeller. Well I may be wrong...
edit: so it comes back to the first answer of PL. do it in 3 functions.
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You can't see well in your pictures, but I have the impression that you have converted to sheet metal, but it is not a sheet metal part in the sense that it cannot unfold: your basic shape before material removal remains a tube, and not a rolled sheet.
Watch this example (SW13)
part2.sldprt
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Wow! =)
Laborious work for so little.... Is it really necessary?
I got the same results as the others....
enlevement_2.png
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yes @ Bart
laborious work for if you can as you say
but at the big diff it's not done in sheet metal
and the cutting angles are respected as in image 1
Now is it necessary I'm like you
which of + is it should have a solder
and like anyone who knows how to make a weld
It is generally necessary to respect a clearance = to the thickness of the part for a weld with good penetration
@+ ;-))
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You summed up the bottom of my thoughts well =)
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Thank you all for your answers,
If I draw my part in sheet metal, how do I do it when my tube is bent?
GT22, I can't open your room!!
Thank you
When a part is laser cut, the head remains fixed and the tube rotates, so the laser is always normal to the cut surface. This is what I would like to reproduce on solidworks, to be able to send the file to the laser. Today when I send it it it cuts following the outer edge of my drawing so the cut piece does not correspond at all to the desired one.
Thank you
Hello
I work in 3D laser cutting so my laser is able to follow the external curve by tilting its head: up to 45°, you can't do everything anyway:)
To help you, you should keep the inside of the tube as a reference in sheet metal construction
and perform normal material removal.
See attached file made on Solidworks 2015.
I created a model of the sheet metal tube with a flat face Lg 0.05mm (which my cutting software eliminates because it is too small) Then I create the normal material removal on the surface.
tube-essay.sldprt
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What version of SW are you on?
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I'm on Solidworks 2014
How do I open the files attached to your answers?
Thank you
Hello
I made a little TUTORIAL in word to explain my progress in SOLIDWORKS 2015.
But worked on 2014.
creer_tube_coupe_normale_a_la_surface_solidworks.docx
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Hello
I haven't done the test, but couldn't the function of removing material by scanning a body solve the problem? (sweep would be the direction of the axis of the shape part)
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A priori the cleanest solution to be close to the result is:
1) To project the surface of the tool onto the outer (or inner) cylinder of the cutting cylinder. This gives a 3D intersection curve on the cylinder
2) From this curve we can make a scan of a straight line perpendicular to the cylinder following the 3D curve drawn on the tube (in practice this is what your laser does in your tube cutting machine: it is always perpendicular to the tube)
3) cut the tube with the 3D surface obtained in 2
In the end, it's long and tedious, but geometrically surely the most accurate technique.
The folded sheet metal solution probably gives a very similar geometry (but we have a nice vertical slot on one side)
NB: this can be buggy at the corners because sweeping the line can create a crisscrossing surface. In this case, put a ray (instead of the sharp angle in the sketch used to make the projection on the cylinder in step 1) and decrease its value until the function no longer fits.
Another solution is to make the cut in 2 steps: the intersection of cylinder and then the vertical slit. This will eliminate the problem of angles
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I'm sending you the file under SW 2012
if you have a problem with the opening I don't understand I just did the test
it works well for me
@+ ;-))
piece1_test_decoupe_laser1.sldprt
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@dao2,
To save attachments (especially sldprt and sldasm) from Internet Explorer, right-click on the link, "Save target as" and in the file name that is offered to you, you have to change the extension that is offered in .htm. You must retype .sldprt in the case of the @gt22 part.
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