Mechanically welded sheet cabinet design, how to simplify

Out of category
1

Hello

I designed a box with my sheet metal worker and we made this design below. I find that we have too many small parts to weld and too much solder overall.  What complicates in my opinion are the "quarter rounds" here in purple on both sides and the green pieces to fill the front. I think there must be another, simpler solution, but I don't see how. How would you do it? How would you make it?

For your information, the realization is 700x400x150mm, and it's made of stainless steel.

Thank you for your help

2

Is there no way to bend in your company? This cabinet could be made with the sheet metal module for the most part! Then just weld these parts together in the end.

1 Like
3

Hello

I would make by biting (successive fold) the large rays and the bottom I think it is slipped in and then pointed from behind...

1 Like
4

Your wardrobe still has an atypical shape

more annoying you don't have to look for it ;-)

No parallel face, is it an imperative?

Financially speaking, it's not a very optimized product

Not possible to modify the structure to minimize the different parts?

@+

4 Likes
5

Hi and thank you for your answers,

In fact it is a product that we already produce and yes the shapes are not modifiable because they are part of a whole, a bit like a car body part.

@Alain, yes the design was done with the sheet metal module.

@ac cobra, Yes the rounded pieces are crunched. But for an indsutrial product to make some 10 copies... It's not an optimal production solution.

@gt22, I agree, the shape is boring but it's a design constraint. No way to change.

The question is when I do a deflection of all this, it's to see how to integrate a maximum of things and minimize the number of welds because too expensive and too much finishing.

Any ideas?

6

can you detail each piece with image and dimension if possible

How many pieces do you have

What is the connection between the façade and the flans circled in red

@+

1 Like
7

Which version of Solidworks are you on???   Because if you want and if you can put us your solidworks or unSTEP files so that we can see and make you proposals...

8

Personally, I will take a large V to have the desired bending radius, then bend the whole thing and weld it.

 

Welding is used for mechanically welded profiles, not for "thin" sheet metal

1 Like
9

Hello

@gt22: Each piece has a different color, the gray color piece is folded fully folded.

@Bart: The radius of the purple pieces is 30mm, which is a lot for a V.

@ac cobra 427: It's true that it would be more simple to share a step but I don't have the authorization to do it.


element_coffret_2.jpg
10

There are tools to radiate for a Ø30.

See attached link

http://www.ukb-gmbh.de/fileadmin/images/fr/montagebeispiel-10115-10116-10190-10191.jpg

 

11

At home the max is V of 100, it's 17 radius. Otherwise we work with the apron bending machine, by crunching.

Powder-coated, the crunching is almost no longer visible, except light grinding or leaving raw it all depends.

But for your corners, it's not possible.

In general, this kind of rounded corners is done with a special machine. See here for example

 

Otherwise you have to stuff it by hand like the old ones =)

12

No worries, but can you at least tell us what thickness it is and what tools you have or your subcontractor??? which version of Solisworks do you have??? That way we can at least try to propose something...

13

I remember a special folding tool at Trumpf that can make this kind of fold.

14

Hi, thanks for your remarks and sorry for my response time.

AC cobra 427: The box is made of 316L stainless steel 1.5mm thick

The equipment that my subcontractor has:

  • 2 x 6kW laser cutting machines
  • 2 press brakes
    • 170 tons, 3 meters
    • 220 tons, 4 meters
  • A machining centre
    • Maximum length: 1500 mm
    • Maximum width: 500 mm
    • Maximum height: 640 mm

The CAD software: Solidworks 2015.

Thank you for your help

15

The lasers are 1500*3000 or 2000*6000?!? I ask in relation to the development that the piece can have...

16

Hello

I've just been experimenting and for me there are only 2 solutions to make your box in 3 parts (the box + the blue part of the bottom + bottom).

1) Box with the purple paries made in crunching (succesive fold) and the green parir fixed on one of the opsé faces with large radius.

2) Same as the 1st way except that the person who will make the box will have to make a tool that he will show on the folder. I make them regularly, in layers cut with a laser and then assembled and it works very well....