With the rapid development of finite element numerical simulation technology, numerical simulation technology is more and more used in the analysis of metal plastic forming process. It has gradually become a powerful tool to analyze complex forming process, so it has attracted extensive attention. Finite element numerical simulation technology is mainly used in the design of process and die, the research of deformation law and the control of quality and accuracy in gear precision forging.
Tian Hua and others reviewed the development of volume forming simulation technology, expounded the development history and research progress of volume forming process numerical simulation technology, and summarized the key technologies, existing technical difficulties and development trend. Tan Xianfeng and others used DEFORM-3D numerical simulation software to simulate and test the precision forging process of cylindrical spur gear, established the finite element simulation model, and compared and analyzed the forming effect and the influence of process parameters, film material, extrusion speed and punch fillet radius on the forming force through the test and simulation results. Zhang Qingping and others analyzed the forming process of bevel gear by finite element method. Through numerical simulation, the geometric changes, material deformation, load and stress-strain distribution of bevel gear in the forming process were analyzed, and the best precision forging process of bevel gear was determined.
Wang Jianhua et al. Carried out numerical simulation of the precision forging process of the driving wheel of hypoid gear through the finite element software DEFORM-3D, analyzed the equivalent effect force field, equivalent effect deformation field, deformation speed field and stroke load curve, and verified through the actual test to prove the accuracy of the numerical simulation. Feng Wei used Pro / Engineer Wildfire three-dimensional modeling software to establish the die model of cylindrical helical gear, and used DEFORM-3D software to simulate the cold precision forging process of cylindrical helical gear by three-dimensional rigid plastic finite element method, analyzed the blank mesh deformation law, equivalent stress and equal effect deformation distribution and stroke load curve, and obtained the metal flow law and deformation mechanical characteristics in the forming process.
Li Zhenhong and others carried out numerical simulation on the forming process of semi closed warm forging of cylindrical gear. Through analysis and comparison, the effects of closed die forging, boss shunting and tooth top shunting on the forming process of semi closed warm forging of cylindrical gear were analyzed and compared. Wei f et al simulated the cold precision forging process of helical gear and the hot precision forging process of helical gear through finite element simulation, and analyzed the deformation load and deformation uniformity of billets with six different geometric shapes in the cold precision forging process of helical gear, as well as the influence of deformation temperature on the microstructure and mechanical properties of billets in the hot precision forging process of helical gear.
Liu g h et al simulated the cold sizing process in spur gear precision forging by finite element method, and discussed the influence of hole diameter on forging force and material flow rate. Liang l analyzed the cold extrusion process of the internal ring gear by using the finite element simulation method, established different numerical models according to the design parameters of the die, the geometric parameters of the gear, processing conditions and load, predicted the forming defects in the actual production process, and the conclusions can be used to guide the production.