Classification of metal contact pieces

Metal contact pieces play an important role in industrial production and manufacturing. According to the shape, they can be divided into straight leaf springs and curved leaf springs. According to the shape of the plate, they can be divided into rectangular, trapezoidal, triangular and stage shapes.　　1, a part of the bending radius. The shape of the spring leaf is the most curved. If the radius of curvature of the curved part is smaller than the force, high stress occurs in these parts. Therefore, in order to prevent large stresses from occurring in the bending section, the plan should be at most 5 times the thickness of the bending radius.　　2, the gap or hole stress meets. The spring sheet is always a step, and in the rapid change of the teeth, in the step length, stress convergence will occur. The smaller the diameter of the hole, the larger the width, the larger the stress convergence coefficient.　　3, the spring board in the shape and size of the public service. The spring is multi-purpose stamping processing, should be considered in the appropriate shape and size selection plan, at the same time stamping processing, but also fully consider that the bending heat treatment of the rebound spring plate is deformed and the size is public.