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| Sheetmetal shaping definitions A open dictionary of sheetmetal shaping terms |
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#1
03-30-2005, 05:13 PM
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Shape
Shape - result of manipulating sheet metal parts through stretching and shrinking the metal to create compound curves. Rearranges the surface of the metal by changing the surface area from the blank stage to the finished part. Some examples would be a ball or bowl, a fender on many cars from the 40’s or 50’s, a bicycle fender or the nose of a commercial jet plane.
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#2
03-30-2005, 06:55 PM
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Ahhh, shape is sort of that. In sheetmetal terms, shape generally refers to thickness changes. In metalshaping, those thickness changes result in a change in the area of the panel - actual surface area that is.
Examples? A stretched panel has areas that are thinner than the steel sheet from which it was shaped. Conversely, areas that have been treated to a shrinking process will be thicker. Wray generally refers to "shape" and "form" as area and arrangement. Changes to the shape (by varying thickness as I described) result in a change in area as well. The reason for the different terms? Most people think of a shape as a geometric form, which isn't always useful in metalshaping. HTH, Tim D.
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