Transactions of Materials and Heat Treatment

Title：Design on multi-station progressive die for car threshold decorative panel bracket

Authors： Fu Guanwen1 Gao Yongsheng1 Pan Tiejun1 Jia Xiaodong2

Unit： 1. School of Mechanical Engineering and Automation College of Science & Technology Ningbo University 2.Xuchang Marine Machinery Co. Ltd.

KeyWords： multi-station progressive die layout design automatic feeding guide mechanism wedge mechanism misfeeding automatic detection device

ClassificationCode：TG385.2

year,vol(issue):pagenumber：2024,49(8):184-189

Abstract：

Based on the structural characteristics, technical requirements and material properties of car threshold decorative panel bracket, a multi-station progressive die was determined for production, and the process layout diagram for the multi-station progressive die was designed, including twenty-two steps such as punching, trimming, bending, flanging, forming, shaping, side punching and cutting. Then, the automatic feeding system in die was adopted with a floating pin and a floating block as the floating strip guide mechanism, the step distance was accurately controlled by the guide pin and automatic feeding machine, and the loading or unloading of strip was conducted by an elastic unloading device. Furthermore, in order to improve the guidance accuracy, a combination of external guide pillars, internal guide pillars and conical positioning blocks was used to guide, and a special dedicated wedge mechanism was designed to solve the lateral stamping problem of oblique holes in three directions and ensure the forming accuracy of the holes. In addition, a dual misfeeding automatic detection device was designed to ensure the safe operation of the die. The results show that the die structure is safe and reliable, and the forming accuracy of parts meets the requirements.

Funds：

浙江省十四五教学改革项目（jg20220738）

作者简介：付关文（2002-），男，本科生 E-mail：974015611@qq.com 通信作者：高永生（1979-），男，硕士，高级讲师 E-mail：511534993@qq.com

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