平缝机刺布挑线机构的动力学优化-噪声与振动控制.PDF

平缝机刺布挑线机构的动力学优化 91 文章编号：1006-1355(2013)02-0091-04 平缝机刺布挑线机构的动力学优化 1, 2 2 1, 2 刘亚辉 ，杨 华 ，周长江 ( 1. 湖南大学 车身先进设计制造国家重点实验室，长沙 410082； 2. 湖南大学 机械与运载工程学院，长沙 410082 ) 摘 要：工业平缝机是缝制行业应用最为广泛的装备之一，其刺布挑线机构对整机的振动与冲击影响较大，对该机 构进行优化有助于整机的减振降噪。建立了平缝机刺布挑线机构的虚拟样机模型，对其进行动力学分析。基于部分 平衡理论，以针杆曲柄处最大惯性力最小为优化目标，建立优化数学模型，通过改变构件的质心坐标位置及质量等参 数来实现机构惯性力的最佳平衡。试验表明该优化方法具有一定的可信度，部分平衡法应用于解决如高速平缝机等 复杂机械系统的振动和噪声有一定的参考价值。 关键词：振动与波；工业平缝机；刺布挑线机构；部分平衡；针杆曲柄；动力学优化 中图分类号：TH 112；O313 文献标识码：A DOI 编码：10.3969/j.issn. 1006-1335.2013.02.021 DynamicDynamic OptimizationOptimization forfor PuncturingPuncturing andand StirringStirring MechanismsMechanisms ofof SewingSewing MachinesMachines LIU Ya-hui 1, 2 , YANG Hua 2 , ZHOU Chang -j iang 1, 2 （1. Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China; 2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China ) AbstractAbstract :: Sewing machine is one of the most popular equipment in sewing industry. The puncturing and stirring mecha- nism is found to have a large influence on vibration and shock of the entire sewing machine. In this paper, a virtual prototype model of the puncturing and stirring mechanism of sewing machines was established for dynamic analysis. Based on the par- tial equilibrium theory, and taking minimizing the maximum inertia force of the needle-bar crank as the optimal objective, the mathematical model of optimization was established. By adjusting the parameters such as