Transactions of Materials and Heat Treatment

Title：Stamping process simulation and die design for thick and narrow-edge ring stop washer parts

Authors： Xing Lijun1 Zhang Yao2 Li Ling1 Fan Jiao1 Xu Peng1 Li Linjin1 Gong Zhihui2 He Hong2

Unit： 1. Hunan Xingtu Aerospace and Spacecraft Manufacturing Co. Ltd. 2. Hunan University

KeyWords： thick and narrow-edge ring stop washer stamping progressive punching die design

ClassificationCode：TG386.2

year,vol(issue):pagenumber：2023,48(11):46-53

Abstract：

For stainless steel stop washers used for aircraft engines, in order to solve the problem of low accuracy of parts using conventional stamping methods, the stamping characteristics, deformation rules, dimensional error sources, defect formation mechanism and avoidance measures of thick and narrow-edge ring parts with high strength were studied by combining with experiments and finite element simulation analysis, and a reasonable stamping process and die scheme was formulated. The results show that two-step progressive blanking is an effective processing method for obtaining thick and narrow-edge ring parts with high precision, and the clearance between punch and die is an important factor affecting the height of collapse angle for parts. Applying ejection force during the semi-blanking process can effectively avoid the collapse angle and inner diameter deviation caused by the unstable deformation of outer ring. By setting reasonable key parameters such as clearance between punch and die, ejection force and semi-blanking thickness, the stop washer parts that meet the quality requirements of design drawings are obtained.

Funds：

国家自然科学基金面上项目（51975200、51975201）

作者简介：邢立军（1988-），男，学士，工程师，E-mail：1913714786@qq.com；通信作者：何洪（1983-），男，博士，副教授，E-mail：hehong_hnu@hnu.edu.cn

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