The size of the draw die radius is one of the major factors affecting metal to draw properly. If the radius is too large, wrinkles will occur on the part. If the radius is too small, it will restrict the flow of the material and cause cracking to the part. As a general rule, three (...
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Pinch trimming operation is commonly used in deep draw progressive tool to separate the drawn product from the progression strip. Unlike a conventional metal cutting process, no shearing or fracturing takes place in pinch trimming. Because the metal basically is pinched off, a very sharp burr usually remains on the drawn part; this burr...
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To develop the flat blank contour of a drawn corner for rectangular drawn shell is not an easy task and there isn’t any formula that will produce a flat blank corner contour exactly conform to the print. Extra material will always produce at the edge near the center-line of the drawn radius; this is...
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Drawn ring produced in a simple progressive tool. Found this video from You tube when I was searching some other information related to stamping technology. Although this video was taken a few years back, but is showed viewers a clear picture of how a simple drawn tool been design and runs in a progressive...
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Many tool designers always ask the same question, “How to compute the flat blank dimension of a deep drawn product?” Seem like developing the flat blank profile is one of the tougher task when comes to designing a deep draw tool Recently we have a request from one of our customers to build a...
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Tool and die makers should be familiarize with what deep drawing tool is, there are also many articles and design books in the market showing how the deep drawing process being done. However, not many really seen how the deep drawn process works. Deep Drawing tools are usually designed in a form of progressive...
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