Sheet metal common sense and processing methods
Scribing 1, The sheet metal parts are mostly made of fl […]
1, The sheet metal parts are mostly made of flat metal sheet, so the actual surface size of the sheet metal parts must be drawn into a flat pattern on the metal sheet. This method is called unfolding.
2. According to the unfolding nature of the surface of the component parts, there are two types of expandable surface and non-expandable surface.
3. The surface energy of the part is flattened flat on a flat surface without tearing or wrinkling. This surface is called a developable surface. Planar, cylindrical and tapered surfaces are expandable surfaces.
If the surface of the part cannot be flattened flat on a flat surface, then the non-expandable surface, such as the sphere, the surface of the ring, and the helicoid, are non-expandable surfaces, and they can only be approximated.