基于装夹变形的某车身侧围公差优化分配
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摘要
以某车身左侧围为模型,利用三维偏差分析软件3DCS对其进行了装配偏差分析,结果表明该车身侧围后段与后保险杠的间隙和面差公差均不满足设定目标要求.依据分析结果对该车身侧围进行了装夹变形分析,进而结合CAE分析结果,将装夹变形因素添加到装配公差约束条件中,对车身侧围进行了公差优化分配,并利用质量成本理论进行评价.优化后其超差率均不超过5%,装配质量明显提高,并且总损失成本降低了7.16%,验证了该优化分配的合理性,实现了以较低的制造成本提高汽车装配质量的优化目标.
Assembly variation of the model of an auto-body left side was analyzed based on 3 D tolerance analysis software 3 DCS. The analysis showed that neither tolerance of gap nor flush between the back of body side and rear bumper can satisfy set target requirement. According to this analysis result, clamping deformation analysis was presented for this auto-body side, then combined with CAE analysis result, the clamping deformation factor was added to the assembly tolerance constraints for the optimal tolerance allocation of the auto-body side, and it was evaluated by the quality cost theory. By optimization tolerance variation is less than 5%, assembly quality is greatly improved, and the total loss is reduced by 7.16%. The rationality of this tolerance optimal allocation method is verified. The optimal goal of improving assembly quality of automobile with low manufacturing cost is realized.
Assembly variation of the model of an auto-body left side was analyzed based on 3 D tolerance analysis software 3 DCS. The analysis showed that neither tolerance of gap nor flush between the back of body side and rear bumper can satisfy set target requirement. According to this analysis result, clamping deformation analysis was presented for this auto-body side, then combined with CAE analysis result, the clamping deformation factor was added to the assembly tolerance constraints for the optimal tolerance allocation of the auto-body side, and it was evaluated by the quality cost theory. By optimization tolerance variation is less than 5%, assembly quality is greatly improved, and the total loss is reduced by 7.16%. The rationality of this tolerance optimal allocation method is verified. The optimal goal of improving assembly quality of automobile with low manufacturing cost is realized.
引文
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[3] 范满珍,徐家川,焦学健,等.某型轿车前车门装配公差分配的优化[J].广西大学学报:自然科学版,2015,40(3):616-621.
[4] 卢鑫.基于车身薄板件的单工位装配偏差分析研究[D].上海:上海工程技术大学汽车工程学院,2013.
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[6] Xie L,Hsieh C.Clamping and welding sequence optimization for minimizing cycle time and assembly deformation[J].Journal of Material Product Technology.2002,17(5/6):389-400.
[7] Stout J B.Geometric covariance in compliant assembly tolerance analysis[M].USA:Brigham Young University,2000.
[8] Camelio J,Hu S J.Modeling variation propagation of multi-station assembly systems with compliant parts[J].Journal of Mechanical Design,2003,12(12):673-681.
[9] 匡兵,黄美发,钟艳如,等.基于粒子群算法的装配公差优化分配[J].机械设计与制造,2009(2):35-37.
[10] 方红芳,吴昭同.并行公差设计与工艺路线技术经济评价方法[J].机械工程学报,2000,36(4):74-77.
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[13] 田口玄一.开发、设计阶段的质量工程学[M].北京:兵器工业出版社,1990.
[14] 应婧.基于质量成本的改进设计决策模型及其应用研究[D].南昌:南昌大学管理学院,2009.
[2] Hung T C,Chan K Y.Multi-objective design and tolerance allocation for single and multi-level systems[J].Journal of Intelligent Manufacturing,2013,24(3):559-573.
[3] 范满珍,徐家川,焦学健,等.某型轿车前车门装配公差分配的优化[J].广西大学学报:自然科学版,2015,40(3):616-621.
[4] 卢鑫.基于车身薄板件的单工位装配偏差分析研究[D].上海:上海工程技术大学汽车工程学院,2013.
[5] Liu S C,Hu S J.Variation simulation for deformable sheet metal assembly using finite element methods[J].Journal of Manufacturing Science and Engineering,1997,119(3):368-374.
[6] Xie L,Hsieh C.Clamping and welding sequence optimization for minimizing cycle time and assembly deformation[J].Journal of Material Product Technology.2002,17(5/6):389-400.
[7] Stout J B.Geometric covariance in compliant assembly tolerance analysis[M].USA:Brigham Young University,2000.
[8] Camelio J,Hu S J.Modeling variation propagation of multi-station assembly systems with compliant parts[J].Journal of Mechanical Design,2003,12(12):673-681.
[9] 匡兵,黄美发,钟艳如,等.基于粒子群算法的装配公差优化分配[J].机械设计与制造,2009(2):35-37.
[10] 方红芳,吴昭同.并行公差设计与工艺路线技术经济评价方法[J].机械工程学报,2000,36(4):74-77.
[11] Galan A Y,Sauleau R,Boriskin A V.Floating boundary particle swarm optimization algorithm[J].Optimization Letters,2013(7):1261-1280.
[12] 刘超,刘少岗.基于粒子群算法的并行公差优化设计模型求解[J].天津科杖大学学报,2013,28(1):67-70.
[13] 田口玄一.开发、设计阶段的质量工程学[M].北京:兵器工业出版社,1990.
[14] 应婧.基于质量成本的改进设计决策模型及其应用研究[D].南昌:南昌大学管理学院,2009.