Transactions of Materials and Heat Treatment

Title：Numerical simulation and process improvement of re-extrusion process

Authors： Wu Lianping Yang Xiaoxiang

Unit： Fuzhou University

KeyWords： FEM simulation spherical plain bearings re-extrusion clearance between the outer ring and the inner ring

ClassificationCode：

year,vol(issue):pagenumber：2015,40(1):61-65

Abstract：

For the non-uniform clearance between the outer ring and the inner ring of large joint bearings after extrusion process, the re-extrusion and assembly process of GEG60 bearing was simulated by Abaqus software, and the distribution of springback and deformation mechanism of the outer ring were investigated. According to the shortage of initial design scheme, two improvement schemes (Reduce convergent radius and die radius and increase protuberance at the waist and both ends of the outer ring) were proposed to solve the problem. The results show that the distribution of the springback of the outer ring is more uniform by implementing the improved plans. Not only the non-uniform of clearance between the outer and the inner rings for initial die design is improved, but also the uniformity of metal flow velocity distribution and contact stress of the inner and the outer rings for bearings are improved considerably.

Funds：

福建省科技重大专项：高端自润滑关节轴承研发及产业化（2012HZ0006-3）

吴连平（1988-），女，硕士研究生

Reference：

［1］Byung Chul Kim，Dong Chang Park，Hak Sung Kim，et al. Development of composite spherical bearing [J]. Composite Structures,2006,75(1):231-240.

［2］杨程，赵升吨，安苏娟，等.一种轴承内外套圈毛坯复合温挤压成形工艺及模具[J].锻压技术，2012,37(1):10-13.Yang C，Zhao S D, An S J, et al. Combined warm extrusion process and its die of bearing inner and outer rings[J].Forging & Stamping Technology, 2012,37(1):10-13.

［3］陈继刚，杨育林，夏振伟，等.整体型外圈关节轴承成形技术现状及发展趋势[J].轴承，2013,（9）：58-62.Chen J G,Yang Y L,Xia Z W,et al.Current status and development trends of forming technology for spherical plain bearing with one piece outer ring[J].Bearing，2013,（9）：58-62.

［4］Yulin Yang, Shijun Huang. Study on new forming process for spherical plain bearing and optimum of the necking force[J]. International Conference on Information Engineering，2010, 229: 216-219.

［5］Alex Orsolini,Julian D Booker. Modelling capabilities required for the double nosing process in the assembly of spherical plain bearings [J].Journal of Engineering Manufacture, 2012，226(5): 930-940.

［6］Johnpaul Woodhead,Julian Booker.Modelling of nosing for assembly of aerospace bearings[J].Experimental and Applied Mechanics,2013,38:327-338.

［7］Xiumei Wang,Shaowei Lv. Numerical investigation on press forming of self-lubricating spherical plain bearings[J]. Int. J. Materials and Product Technology, 2013, 47:46-62.

［8］陈浩,赵国群,张存生,等. 薄壁空心铝型材挤压过程数值模拟及模具优化[J]. 机械工程学报,2010，46(26):35-39.Chen H,Zhao G Q,Zhang C S,et al. Numerical simulation of extrusion process and die structure optimization for a hollow aluminum profile with thin wall[J]. Chinese Journal of Mechanical Engineering,2010，46(26):35-39.

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