Transactions of Materials and Heat Treatment

Title：Multi-degree-of-freedom numerical control linkage forming process for steering nut

Authors： Liu Guanghui Liu Dan Zhang Chao Zhang Yishuai Liu Hua

Unit： Zhengzhou Research Institute of Mechanical Engineering Co. Ltd.

KeyWords： steering nut multi-degree-of-freedom numerical control linkage forming mold structure Deform-3D

ClassificationCode：TG314.3

year,vol(issue):pagenumber：2020,45(5):20-25

Abstract：

According to the structural characteristics of a certain type of steering nut, a new multi-degree-of-freedom numerical control linkage forming process was proposed, and the steering nut forgings without flying edge and with tooth shape could be formed by only one heating and single working station. Then, the multi-degree-of-freedom numerical control linkage forming process of steering nut was simulated by the finite element simulation software Deform-3D, and the load-time curve of each punch, equivalent stress distribution and stress distribution inside the mold in the forming process were analyzed. Furthermore, based on the simulation results, the mold structure of multi-degree-of-freedom numerical control linkage forming for steering nut was designed, and the process test was conducted on the multi-direction numerical control linkage forming press developed independently. The results show that the multi-degree-of-freedom numerical control linkage forming process of steering nut proposed is feasible, and the steering nut forgings obtained by the experiment are full filled and the sizes meet the design requirements. Thus, the above research has certain guiding significance for the production of steering nut.

Funds：

郑州市科技重大专项资金（152PZDZX007）

刘光辉(1989-), 男, 硕士，工程师，E-mail：liu0406gh@163.com；通讯作者：刘华（1962-），男，博士，博士生导师，研究员，E-mail：13903832971@163.com

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