Transactions of Materials and Heat Treatment

Title：Near-net-shape forming machining technology on automotive anti-vibration nut based on FEA

Authors： Chen Zhengke Ru Chunbo

Unit： College of Artificial Intelligence Jiangxi University of Technology

KeyWords： anti-vibration nut 35CrMo alloy steel near-net-shape forming technology cold heading mold design

ClassificationCode：TH164；TG376.3

year,vol(issue):pagenumber：2022,47(11):42-49

Abstract：

For the problems of poor performance, easy fracture at the bottom of groove and high manufacturing cost for an automobile anti-vibration nut, the traditional manufacturing process was improved, and a near-net-shape forming machining technology was proposed, which was combined with finite element simulation technology for auxiliary research. Then, the mechanical properties of 35CrMo alloy steel at room temperature were obtained by compression test, and an accurate simulation material model was established. According to the structural characteristics and use characteristics of anti-vibration nut, the forming idea was briefly introduced, a new forming scheme was formulated, and the forming mold design in the cold heading stage was completed. Furthermore, the continuous cold heading process of anti-vibration nut was simulated by Deform-3D, and the forming condition of part, load-stroke curve, equivalent stress distribution and other information were comprehensively analyzed to ensure the rationality of the process and mold structure design, which effectively guided the final process test and reduced the production risk. The test results show that the anti-vibration nut produced by the new process has stable performance and good groove quality, which effectively solves the current problems faced by enterprises.

Funds：

江西省教育厅科学技术研究项目（GJJ202012）；江西科技学院校级自然科学项目（ZR1902）

作者简介：陈正科（1988-），男，硕士，讲师，E-mail：czk2618717czk@163.com

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