Analysis of the shape-correction process in the process of metal stamping parts

Stamping parts processing factory, processing furniture parts stamping parts, metal stamping parts, precision parts stamping parts; the uneven metal stamping parts are placed in the mold and flattened is called leveling, which is mainly used to improve the plane of the metal stamping parts degree. The blanking parts exhibit arching under the action of the die (especially the oblique blade blanking and the continuous blanking without pressure material are more serious), the arching of the bottom of the curved metal stamping parts without pressure material and the flatness error of the blank are too large At all times, leveling is required. 1. The characteristics of leveling deformation and leveling force. Under the action of the leveling die, the metal stamping blanks are bent and deformed in the reverse direction and are flattened, and are forced to be compressed when the press reaches the lower extreme point to make the material It is in a state of three-way compressive stress. The leveling work schedule is small, but the pressure is high. 2. Flat leveling die There are two types of leveling die for flat metal stamping parts: split surface leveling die and tooth surface leveling die. 1) Smooth leveling die. The pressing plane of the mold is smooth, so the effective unit pressure acting on the flat material is small, and the effect of changing the internal stress state of the material is weak. After unloading, the parts have a certain rebound, and the effect is worse for the parts of high-strength materials. , In order to make the leveling not be affected by the deviation of the plate thickness or the movement accuracy of the press slider, the smooth leveling die can adopt the structure of a floating die handle or a floating die. The smooth leveling die is mainly used for the leveling of small metal stamping parts made of soft metal (such as aluminum, soft brass, etc.) that are not required for flatness and are not allowed to have indentations on the surface. 2) Tooth surface leveling die. Because the teeth are pressed into the blank to form many small plastic deformation dots, it is helpful to completely change the original stress and strain state of the material, so it can reduce the rebound and the leveling effect is good. According to different tooth shapes, tooth surface leveling can be divided into sharp teeth and flat teeth. There are two types of tine tooth shapes: square and diamond. The upper and lower mold teeth should be staggered during operation, otherwise the leveling effect will be poor and the tines will be ground prematurely. If the tines are pressed into the surface of the part, there will be deep indentation, and the part is easy to stick to the mold. This kind of mold is mainly used for materials with high flatness requirements, strong and hard materials, and the surface is allowed to have indentations or sheet thickness (δu003d 3～15mm) metal stamping parts are leveled. Article recommendation: Bulging process of hollow blanks in stamping parts Previous post: Bulging process of hollow blanks in stamping parts