The stress condition of scaffolding stamping parts processing

In the production and processing of scaffold stamping parts, several processing procedures need to be passed in sequence. Different processing sections have different stress conditions. For example, in the blanking process, the shape of the blanked product is closely related to its forming process. For scaffolding stamping parts, the cross-section of the blanking product can be divided into four forms: collapsed corner, bright area, broken area and burr. These four differences are actually caused by different stages, different parts, and different stresses in the blanking process of scaffold stamping parts. For example, in the elastic deformation stage, the stress condition is that the cutting edge material is subjected to shearing force, and the force is less than the elastic limit. If the force disappears, the matter will return to its original state. The specific state of the high-pressure cabinet can be described as the punch exerting pressure on the material, and the material is slightly squeezed to the edge of the die. At the same time, in the process of processing the scaffold stamping parts, it will go through the plastic deformation stage. At this stage, the stress of the material gradually exceeds the elastic limit from the edge to the center. The specific state is that the punch further penetrates into the material, and at this stage the blanking piece produces a reduced angle and a bright band. In the shear cracking stage, the local stress near the edge of the mold first reaches the shear strength of the material, which increases the cracking of the material near the edge of the mold. . It should be noted that at this time, during the processing of the scaffold stamping parts, the material of the punch blade is still in the plastic deformation stage. As the punch penetrates further into the material, the material near the punch also reaches shear strength, cracks appear, and then the two cracks overlap and the material separates. The phenomenon is that the material separates, and when the upper and lower cracks overlap, they tear each other to produce burrs. In addition, in the processing and production of scaffolding stamping parts, the blanking process also needs to be reasonably controlled. It should be noted that when designing scaffold stamping parts, the straight or curved joints of the blanking parts must have proper rounded corners, otherwise the stress of the mold will be concentrated and it will be easily damaged. Related news: The characteristics of the main materials of stamping parts, the treatment of common problems of stamping parts, the characteristics of scaffolding stamping parts and the importance of inspections