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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Draw die radius
In die tapping sensor
Any tool maker might imagine what will happen if a tap within a progressive tool drives into a strip without a pre-pierced hole or a missing extrusion hole. The consequences can be very frustrating. The missing hole in the in die tapping tool (...
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Metal forming Faston connectors
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...
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Metal stamping | coining
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...
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Put AutoCad back to normal
It is hard to get used to the 2009 version of Autocad., The tool bar and menu bar are completely different from the 2008 version. It seems that one...
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How gold chains are made
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!...
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Selection of tool steel
Found the following chart from the Internet. I thought it is a good idea to share this piece of information with my Blog readers. This chart comparing the toughness...
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Deep draw Pinch trim in progressive die
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...
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Developing drawn corner for rectangular shell
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...
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