Finite element analysis and process optimization in closed precision-forging for shifting gear blank

被引：0
|
作者：
School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China [1 ]
机构：
[1] School of Materials Science and Engineering, Chongqing University
来源：
Nongye Jixie Xuebao | 2013年 / 3卷 / 251-256期
关键词：
Closed precision-forging; Divided flow; FEM; Process optimization; Shifting gear blank;
D O I：
10.6041/j.issn.1000-1298.2013.03.045
中图分类号：
学科分类号：
摘要：
Based on a rigid plastic finite element method, the surface defect of closed precision-forging process for shifting gear blank can be predicted. The metal forming process with different drafting angle and fillet radius in the die key part was simulated by using the orthogonal experimental method, and the initiation of surface defect was analyzed in detail. The reasonable forging critical diagram of shifting gear blank was given, which effectively eliminates fold and unfilled. Meanwhile, in view of the problems of the high position accuracy of ribs and the high forming load in actual practice, a new scheme of divided flow precision-forging was put forward, which can greatly improve rib position degree precision and reduce load. The accuracy of position degree was less than 0.08 mm, and the reduce load was reduced by 20%-40%. The new scheme was put into actual practice and the key problems of a closed precision-forging process for shifting gear were solved. The reliability of the numerical simulation was verified.
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页码：251 / 256
页数：5
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