Firstly, reasonable material selection and thickness control is the foundation for preventing deformation. Sheet metals of different materials have different mechanical properties, such as stainless steel has a larger elastic modulus and significant springback; aluminum alloy is softer and prone to plastic deformation. Therefore, in the design stage, materials should be selected reasonably according to product usage requirements, and material thickness should be controlled within a reasonable range to reduce the risk of deformation during processing.

　　Secondly, optimizing the structural design helps to reduce deformation. In the design of parts, it is necessary to avoid bad designs such as structural asymmetry and stress concentration as much as possible, such as using reinforcing ribs, flanges, and bulges to enhance rigidity, thereby improving the deformation resistance of parts when subjected to force or heat. In addition, reasonable arrangement of stamping and bending directions also helps to evenly distribute stress, reduce springback and twist.



Thirdly, adopting scientific processing technology is a key link. For example, in bending processing, attention should be paid to the matching accuracy of the upper and lower molds, controlling the springback angle, and using over-bending springback compensation method when necessary; during stamping, it is necessary to ensure that the mold clearance is reasonable to prevent local deformation caused by uneven pressure. At the same time, in cutting and welding operations, it is advisable to use high-precision equipment such as laser cutting and plasma cutting to minimize the heat-affected area and avoid deformation caused by uneven local heating.



Fourthly, reasonably arranging the processing sequence is also very important. It is advisable to follow the processing principle of 'inside first, outside later' and 'small first, large later' to minimize cumulative stress during the processing process. For complex parts that require multiple processes, step-by-step processing and intermittent cooling methods can be adopted to release internal material stress and avoid deformation caused by stress concentration.



Finally, implementing effective correction and inspection measures is also an indispensable means. For parts that have experienced slight deformation, repairs can be made through methods such as pressure correction and heat correction; at the same time, strengthening the detection of finished product dimensions is necessary, using precision equipment such as coordinate measuring machines and laser scanners to ensure product quality in line with design requirements.



In summary, to avoid processing deformation in sheet metal manufacturing, it is necessary to consider multiple aspects such as material selection, structural design, processing technology, process arrangement, and subsequent correction. By continuously optimizing the process flow and improving the production technology level, high-quality and high-precision sheet metal parts can be manufactured. This not only helps to improve the pass rate of products but also effectively reduces production costs and enhances the market competitiveness of enterprises.