As one of the basic parts and components, the spring industry needs a super early stage of development to adapt to the rapid development of the whole national industry. In addition, the expansion of the scale and variety of spring products and the improvement of the quality level are also the needs of the upgrading of mechanical equipment and the improvement of the performance of supporting main machines. Therefore, the development of the whole national industry, spring products play an important role, such as the load accuracy of springs There are many gaps in perpendicularity and accuracy, which are mainly reflected in unstable performance.
Some important quality indicators are highly discrete and the service life is unstable. Especially when the main engine requires the spring to work under high-speed and high stress conditions, the contradiction is more prominent. In the future, the development direction of the spring should be high strength, high life, lightweight, miniaturization, special-shaped parts and assemblies. We should strengthen the development of new spring products, intensify the research of new products, and continue to expand the varieties and specifications of spring products. In recent years, There are many researches on FEM design method.
Some of them have entered the practical stage. In order to construct the data base of materials, it is necessary to strengthen the basic mechanical theory research of metal materials; Technology and manufacturing technology directly affect spring quality and spring design. The equipment used by most manufacturers in China's spring industry is relatively backward, especially the phenomenon of state-owned old enterprises is more serious, especially the testing equipment and testing equipment. At present, the precision of domestic products is not up to the standard and the variety is not complete, which can not meet the demand. It is mainly imported from abroad.
At present, the mechanical spring processing equipment and spring processing production line are developing in depth and breadth towards NC and CNC, mainly to reduce non-metallic inclusions and control surface quality and dimensional accuracy. The main requirements for spring materials are: the spring working under high strength should have high fatigue life and good relaxation resistance. The woodworking band saw machine should have corrosion resistance, non-magnetic, electrical conductivity, wear resistance Heat resistance, etc. at present, the widely used spring stress and stiffness calculation formulas are derived from elementary material mechanics. Without certain practical experience, it is difficult to design and manufacture high-precision springs. With the increase of design stress, many previous experiences are no longer applicable.
