Transactions of Materials and Heat Treatment

Title：Trimming and restriking composite process for panorama sunroof panel and die design

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ClassificationCode：U466；TG386

year,vol(issue):pagenumber：2022,47(7):112-121

Abstract：

For an automobile panorama sunroof panel, through analyzing the manufacturability of the panorama sunroof panel product and the practicability of the die structure layout, the process content of each process was rationally planned, and the process integration of trimming and side restriking for gutter channel on both sides of the panorama sunroof panel, the process integration of trimming and side restriking for rear wing mounting surface on back side of the panorama sunroof panel, as well as the process integration of trimming and flanging for sunroof opening were realized. Therefore, the stamping die process for the panorama sunroof panel was shortened from four-process to three-process. Then, the two kinds of punch expansion wedge mechanism used to realize the three-process stamping die for the panorama sunroof panel were mainly expounded. Furthermore, a horizontal push-pull punch expansion wedge mechanism was designed in the gutter channel on the both sides of the panorama sunroof panel, and a vertical push-pull punch expansion wedge mechanism was designed on the rear wing mounting surface on back side of the panorama sunroof panel. The research shows that the combined application for two different types of wedge mechanisms can enable the panorama sunroof panel to complete more process content in the same process, realize the synchronization of trimming and side restriking for the three-sided negative angle structure, shorten the stamping die process, reduce the cost of stamping dies and improve the production efficiency of parts.

Funds：

国家自然科学基金面上项目(51775397，51675392)；国家重点研发计划资助项目（2019YFB1704502）

作者简介：蒋磊（1987-），男，学士，工程师 E-mail：648213973@qq.com

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