Some readers wrote to me asking what is the best, recommended bend radius for cold rolled steel after reading my previous post, entitled “Good way bend and the bad way bend” while some engineering students from India asked for formulas for tooling design. P.S: It is highly recommended that, readers put their questions and...
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Some readers wrote to me after reading my previous post on “Metal forming spring back”. The technique I mentioned in the post was used on a progressive tool it is not suitable in the single forming tool. Some of the factors for successful bending are the size of interior bend radius and the metal...
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All metal has a certain degree of spring back after its being bent. During sheet metal bending, the interior radius of the bent metal is under compression and the exterior bend radius is in tension and stretched. Due to the metals’ elasticity, it tends to go back to its original shape after its being...
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In any press tool design, the first thing to consider is how to determine the flat blank length of the folded component. I won’t go into the boring theory of how the material behaves during bending and how the individual material property affects the length and spring back. To be frank, I hate all these theories! During the bending...
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Somewhere last year, we had a simple progressive tool designed by one of our junior designers. It’s a very simple “U” bracket, 0.8 mm thick cold roll steel with both sides bent up to 1.6mm height. No one really paid attention to it just because this item is too simple to draw any attention...
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