| 引用本文: | 李萍,胡传鹏,杨卫正,代光旭,薛克敏.带横向外凸筋多楔轮旋压成形规律及工艺研究[J].哈尔滨工业大学学报,2018,50(11):153.DOI:10.11918/j.issn.0367-6234.201803060 |
| LI Ping,HU Chuanpeng,YANG Weizheng,DAI Guangxu,XUE Kemin.Study on spinning forming process of multi-wedge belt pulley with transverse outer ribs[J].Journal of Harbin Institute of Technology,2018,50(11):153.DOI:10.11918/j.issn.0367-6234.201803060 |
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| 摘要: |
| 为解决带较高横向外凸筋的多楔轮需整体成形三凸筋且凸筋部位难成形的问题，采用多道次旋压成形工艺方案并采用基于SIMUFACT的有限元模拟和实验相结合的方法对其成形过程进行研究.基于旋压成形工艺理论分析，建立了旋压成形有限元模型.模拟分析了圆形板坯成形过程中应力、应变场分布，分析了第1至4道次旋压成形过程中材料塑性流动规律.总结了不同旋压设备工艺参数下零件成形效果，分析表明不同旋轮进给速度与摩擦系数对多楔轮凸筋充填效果和成形载荷存在较大影响.并以旋轮进给速度、摩擦系数、芯模转速为自变量，建立3因素3水平正交试验，获得每种工艺方案下最大成形载荷、凸筋充填程度数据.结合灰色理论对带横向外凸筋多楔轮旋压成形工艺参数进行了优化，证明了在较小的旋轮进给速度与摩擦系数下能够保证凸筋的充填质量和零件整体的成形效果，在CDC-S100E/R4旋压机上进行了试验，成功将初始板坯由3.0 mm整体增厚到3.4 mm，凸筋部位增厚到6.9 mm，验证了该成形方案与灰色系统理论优化的可行性.
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| 关键词: 带横向外凸筋多楔轮 旋压成形 有限元分析 正交实验 灰色系统理论 |
| DOI：10.11918/j.issn.0367-6234.201803060 |
| 分类号:TG306 |
| 文献标识码:A |
| 基金项目:江苏省科技计划项目(BA2016047) |
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| Study on spinning forming process of multi-wedge belt pulley with transverse outer ribs |
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LI Ping1,HU Chuanpeng1,YANG Weizheng1,DAI Guangxu2,XUE Kemin1
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(1.School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China; 2. Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei 230009, China)
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| Abstract: |
| In order to solve the multi-wedge belt pulley (MWBP) with transverse outer ribs was difficult to forming ribs and simultaneous forming three ribs, the MWBP with transverse outer ribs was used to study the formation of multi-steps spinning forming process by the SIMUFACT software. The finite element model of spinning forming was established based on the analysis of spinning deformation. The stress field distribution, the deformation of the sheet metal and the metal flowing of the sheet during the 1st to 4th step spinning forming process were analyzed. In this study, it generalized integral quality of parts under different spinning equipment technics parameter, and prove the roller feed speed and the friction to have important impact in filling quality of ribs the integral quality of parts. Three factors and three levels orthogonal experiment were numerically simulated with the independent variables of roller feed speed, friction factor and rotation rate, the data of the maximum forming load and thickening rate of transverse ribs and those data were obtained by the orthogonal experiment. The grey system theory was used in the parameters optimization though the spinning thickening forming of MWBP with transverse outer ribs. The smaller roller feed speed and the friction can ensure filling quality of ribs the integral quality of parts. Those experiments were conducted on the CDC-S100E/R4 spinning machine. The results showed that the original plate thickness was thickened from 3.0 mm to 3.4 mm and the rib region was thickened to 6.9 mm which verified the feasibility of the grey system theory based optimization scheme.
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| Key words: MWBP with transverse outer ribs spinning forming FEM orthogonal test grey system theory |
