Questions tagged [metal-folding]
23 questions
15
votes
2 answers
How do I size metal plates to get the correct dimensions after folding?
I am designing a metal plate that will be laser-cut (or machine-cut) and then folded. I want to know how to size the pre-folded plate in order to get the right dimensions after folding.
My actual part is not exactly like this (I simplified it for…
jhabbott
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6
votes
1 answer
What is this strengthening dent called in a sheet metal part?
What is this deliberate v-shaped strengthening dent called in a sheet metal fold? I want to use CAD software to add one, but I don’t even know the term to search for it in order to to find out how!
learnvst
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3
votes
1 answer
Folding of thin gauge metal sheets
I would like to fold thin metal sheets to a particular angle.
For example: fold a 0.1mm thick steel strip of width 20mm and length 150mm to an angle of 45° along its length (10mm panels on each side of the fold).
I would like to keep the radius of…
atom44
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2
votes
1 answer
Metal sheet forming - material properties when switching material
What does one have to look out in material properties when changing material grade in cold sheet forming operation (example: from DC04 to DC03 or to DC01). Operation is mostly made of 90°bends and punching (16 mm parts).
branexius
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2
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0 answers
Springback in carbon/HSLA steel - cold forming
What are the measurements denoted on top of the YS-t steel lines? Material thickness or bend radius?
ASM Handbook Volume 14B - Metal Working Sheet Forming - 2006; pg.517 fig. 39
The only mention of the figure (pg.516):
The
amount of springback with…
branexius
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2
votes
3 answers
Understanding metalwork manufacture -- How are Purchase Quotations prepared?
I have been involved with a number of metalwork design projects lately and I'm increasingly finding myself asking for quotations for small prototype runs (often one-off jobs) to verify the validity of a design.
The kind of items I'm talking about…
user6335
2
votes
1 answer
Coating gold on to sunglasses lenses?
Recently I have been trying to find out more about the process that is used to coat glasses lenses with gold. I asked about it in another forum last night and I was directed here. I initially thought that I could use the same process that NASA used…
gowekj sergfg
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1
vote
4 answers
What is the cheapest way to build a fireproof box?
I'm breaking my brain for a two weeks trying to find a way to build a fireproof box 100 cm × 100 cm × 100 cm with 1 door at the cheapest price.
The immediate candidate is sheet metal, which needs to be at least 1.5 mm thick in order to be welded,…
Simon
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1
vote
1 answer
How can we tell if a press mold need more stages?
I was asked to design a simple press mold for a 0.5mm sheet metal part. It has some small but rather deep sinks (5-7mm) which has made me wondering if it can be done in a single stage or it needs more stages. I guess there should be a table to help…
2012User
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1
vote
1 answer
Bendable flaps on sheet metal
I'm trying to cut some bendable flaps on aluminium sheets for hooking/clipping onto some fabric. The flaps I have in mind look like this:
Are these common features? Does anyone know the geometry of the cutout? I wish SolidWorks had them as standard…
John M.
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1
vote
1 answer
How to form steel truck fenders
I want to set up steel truck fenders production line, but have no idea how to do that. Something like this picture.
Edit1:
I have two plans to form final curved shape , using a hydraulic press or using a customized rolling machine .
Final products…
bryan c
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0
votes
1 answer
How are sheet metal enclosures closed with screws?
I need to design an aluminum enclosure for some electronics, but I have no idea how to screw the different pieces together. I have settled for a folded box design with a top, but I can't figure out how the lid is supposed to be screwed with the…
Jambon
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0
votes
1 answer
How to CAD: smooth width transition in sheet-metal bends
I am working with FreeCAD 0.20 and Sheet Metal work bench 0.2.63, but universal CAD tips are also welcomed. As shown in the image, I would like to bend sheet metal with smoothly chancing width along the bend. So, I cannot use for example negative…
Imsa
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0
votes
0 answers
Bend a metal strip to a different axis
How can I bend a metal strip (3 inches x 3 feet x 1/32th) in a different axis? I know it would need a few compound bends, but can't figure out the math. Preferably straight vends instead of just twisting it.
How long of a bend radius would be…
cde
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0
votes
1 answer
Fire rated EN 13501-1 B-s1/s2, d0 sheets
I'm trying to learn more about the type of sheets I can get for a project, I would of course go for polycarbonate if not for its price, currently the project with PC will cost \$600-\$700
but I'm hoping for something cheaper.
It does not need to be…
Simon
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