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Precision metal stamping parts bending processing is a processing method in which the bending moment is applied to the material to deform it, causing the precision stamping component to experience bending stress caused by the bending moment internally. The stress distribution is limited by the neutral plane of the sheet.
Bending machining is a machining method in which bending moment is applied to the material to deform it, causing the precision stamped component to experience bending stress caused by the bending moment internally. The stress distribution is limited by the neutral plane of the sheet. The outer side is tensile stress, and the inner side is compressive stress. Once the bending moment is removed, the material returns to a state where the moment is balanced through elastic deformation. Compared with the standard shape of the workpiece, there is a certain phenomenon of opening outward or tilting inward. This phenomenon is called elastic recovery deformation.
The factors that affect the rebound amount of precision hardware stamping parts include: part material, plate thickness, stamping pressure, mold size, and star shape. Due to these factors, if we consider the speed of sound and the nature of the rebounds, it is easy to identify the cause of the rebound phenomenon and then stop it. The fundamental reason for rebound is that the bent part undergoes uneven stress after the material is bent. If this uneven stress becomes uniform stress, that is, compressive or tensile stress is applied to the entire part, the amount of rebound can be reduced. However, certain components have special requirements for deformation, such as indentation, which requires significant solutions in the design and processing of precision stamping parts.
The number of stamping processes mainly depends on the dimensional accuracy of the workpiece geometry, as well as the material characteristics and complexity. In specific cases, the actual ability to manufacture molds should also be considered Factors such as stamping equipment conditions, production batches, and process stability. On the premise of ensuring the quality of precision stamping parts, in order to improve economic efficiency and production efficiency, the number of processes should be minimized as much as possible.
The number of stamping processes mainly depends on the dimensional accuracy of the workpiece geometry, as well as the material characteristics and complexity. In specific cases, the actual ability to manufacture molds should also be considered Factors such as stamping equipment conditions, production batches, and process stability. On the premise of ensuring the quality of precision stamping parts, in order to improve economic efficiency and production efficiency, the number of processes should be minimized as much as possible. The principles that should be paid attention to in precision stamping parts processing technology:
When precision hardware stamping parts require high cross-sectional quality and dimensional accuracy of the workpiece, it can be considered to add a finishing process after the stamping process or directly use precision stamping technology.
The number of steps in a curved component mainly depends on the complexity of its structural shape, the number of bending angles, relative positions, and bending direction. When the bending radius of the bent component is less than the allowable value, a forming process is added after bending. The process quantity and material properties of drawing parts, drawing height, number of drawing steps and drawing diameter, material thickness and conditions are related and must be determined by the drawing process.
When the depth of the fillet is small or the dimensional accuracy is high, the forming process is required after stretching. The determination of process quantity should also comply with the existing forming capacity and stamping equipment status of the enterprise. The forming ability should ensure corresponding improvement in assembly accuracy. Otherwise, you can only increase the number of operations. In order to improve the stability of the stamping process for precision hardware stamping parts, it is sometimes necessary to increase the number of processes to ensure that