Transactions of Materials and Heat Treatment

Title：Method of eliminating surface impression in the bending of thick plate parts and die development

Authors： Lyu Haoyuan

Unit： Changchun Railway Bus Co. Ltd.

KeyWords： thick plate part bending surface impression semi-axis turning plate bending die conventional die

ClassificationCode：TG386

year,vol(issue):pagenumber：2017,42(5):102-107

Abstract：

It was introduced the current situation and handling method of outer surface impression in the bending of thick plate parts, and the limitation of existing technology in solving the bending impression was presented. Then, influential factors of impression and their relationships were described theoretically. Therefore, an innovative solution was put forward, and its feasibility was analyzed in detail. On the basis of the theoretical analysis, a semi-axis turning plate bending die with no-impression was developed to bend parts of thick plate and large fillet radius. Based on the kinematic mechanics, the relationship between specific structures with its application scope was provided. Through the practical application, it was proved that the die with a new structure could effectively eliminate the impression on bending of thick plate parts and improve the surface quality. Therefore, the production efficiency was improved and the production cost was reduced.

Funds：

中车长客股份公司2015年技术开发项目（15GCZX002）

吕浩源(1959-),男，学士，高级工程师

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