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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A Faston connector is a conductive device that joins electrical circuits together. This connection might be temporary and could be disconnected quickly. The Faston connector has a wire crimped to the end while being connected to other electrical devices. The Faston connectors have been commonly used since the 1970s. It is economically cheap, thus,...
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Coining is a common process in metal stamping industry. It involves thinning the material thickness and transforms the piece part to completely new shape and size. Coining can be done by cold and hot process; it requires higher operational force and may need to be performed two to three times in order to form...
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As a tool maker for a few decades, I never know how a gold chain is made until I watched the following video clip. Thanks to the up loader! Watch carefully, the robot arms which are twisting the gold chains is actually similar to a multi-slide mechanism.
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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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Side cam design is a common feature in tool making industry which could be applied on almost every tool that requires side cutting, side forming, clamping, rolling etc. Some mathematicians said the best side cam angle is about 43 degrees. At this angle; friction produced between both the contacting elements is reduced and thus...
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We used to receive many RFQ (Request Of Quotation) from our customers asking for price offer. If you study the prints carefully, you may see some sheet metal components were designed in the bed way bend. The bend radii are stated as sharp or only a small radius is allowed. When we spotted this...
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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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Mechanical stamping presses designed with many different type of driven mechanism and each individuate type is used for difference application. The common one included Eccentric-gear drive, Knuckle drives, Rocker arm drives and toggle mechanisms drive. The Eccentric gear drive mechanism The eccentric gear drive is designed mainly for large straight slide press with permit...
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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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