Technical requirements for shrapnel of various electrical plugs

Technical requirements for various electrical plug shrapnels. The radius of the bending part of the shrapnel of electrical plugs. Most of the springs need to be bent when they are formed. If the radius of curvature of the curved part is relatively small, these parts will have a lot of stress. Therefore, if you want to avoid large stress in the bending part, the bending radius should be at least five times the thickness of the plate. The stress is concentrated at the notch or hole of the shrapnel of the electrical plug. Spring sheets often have stepped parts and openings, and stress concentration will occur at steps with sharp changes in size. The smaller the hole diameter, the larger the plate width, the greater the stress concentration factor. Tolerances on the shape and size of the shrapnel of electrical plugs, and the springs are mostly processed by stamping. In the design, the shape and size of the stamping should be selected. At the same time, the springback during bending and the deformation caused by heat treatment should also be fully considered. Dimensional tolerance.