Reply With QuoteA picture would be helpful as your description does not seem logical (all holes have a radius).Originally Posted by Karolys
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Sheet Metal Design and Applications
Manufacturing Processes
Hello all,
I need help on a die (if i am not wrong on how tool is called) design. I need to form a hole with radius on a sheet metal. Maybe anyone have some useful online links or books on a subject, where I could get started? I drew a part similar to what i need, but can not attach it here somehow.
Any help would be appreciated!
A picture would be helpful as your description does not seem logical (all holes have a radius).
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Sheet Metal Design and Applications
Manufacturing Processes
I agree with Kelly that the drawing will help a lot; but, if you are seeking a hole with a radiused top edge or a rounded top entry then you may require a two step arrangement: first, one die to stamp a clean hole and then a second die to either radius the upper hole edge or extrude the metal surrounding the hole to form a radiused entry depending on which of those alternative configurations you are seeking.
I just had a visual.... Thanks JAlberts
Kaitv180.jpg
This is a fast drawing of what i need.
To start with, a hole would be laser-cut. I need just to form its edges.
So im wondering, if there is some literature, that would help to design the tool, for something exactly like this?
The geometry looks very manufacturable to me - less information on the size, radius and tolerance expectations. In general, you can design the geometry you need and submit for a manufacturing review by a sheetmetal expert. This is a great way to get an education..
See the following books as well:
Die Design Fundamentals, Third Edition
Sheet Metal Stamping Dies, Die Design and Die Making Practices
Metalworking Sink or Swim
Thanks! Very useful literature it seems to me.
Also, sorry for the possibly stupid question, what do you mean by "submit for a manufacturing review by a sheetmetal expert"?
Submit your design to the person or organization that will actually manufacture the tool or end-item sheet metal part.
Those whom physically build stuff are usually "experts" and can provide valuable insight and suggestions on how to improve your design.
The thing is, we only sent them a 3D models and the drawings. They gonna design the tool themselves. What i want to, is to get at least some experience in the field of this tool design, that i could talk to them, and be able to explain what i want properly and in general to learn. Later gonna compare my design to theirs, see how it differs.
Thanks for the help!
This is a great stuff about the metal sheet forming. The ideas are fine and give us nice information.
I want to produce a sheet metal part (30mm*3mm*0.3mm).
And the specimen was formed from progressive sheet metal die.
And the application of this part requires the elasticity (return to the original position after unloading) at the free end of the part.
And at the same time, we cannot form the material that has high elasticity because its high spring back.
My search on internet reach me to “heat treatable annealed spring steel” because before the forming process, the material has low tensile strength (the forming process occurs easily) and after the forming process, we can make a heat treatment to increase the tensile strength to gain the required elasticity during its application.
What is your recommended grade of this steel?
And What is the method of heat treatment that I apply after the forming process?
Thanks for discussion on this topic guys.
Suitable steels : SAE 1080 (Carbon content 0.75% to 0.85%)
Condition: Annealed with bright surface finish
Heat Treatment: Get heat treatment consultation from relevant agency.
Caution: Hydrogen embrittlement will be encountered while Zinc lating
The setup seems simple enough to be done, a little more details on the dimensions would help a lot.
Pickled and oiled steel fabrication (HRPO) is a chemical process that removes impurities such as stains, rust, scale and other surface impurities and then coated with a thin layer of oil to protect it from oxidization. Hot Rolled Pickled and Oiled Sheets are primarily used in end use applications that are exposed and or painted parts or metal stamping applications.
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