平缝机刺布挑线机构的动力学优化  

Dynamic Optimization for Puncturing and Stirring Mechanisms of Sewing Machines

作　　者：刘亚辉[1,2] 杨华[2] 周长江[1,2] 

机构地区：[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

出　　处：《噪声与振动控制》2013年第2期91-94,100,共5页Noise and Vibration Control

基　　金：国家重点基础研究发展计划(2010CB832700);国家自然科学基金项目(50805044)

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。： 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 model of the puncturing and stirring mechanism of sewing machines entire sewing machine. In this paper, a virtual prototype 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 the mass and the location of the mass center of the mechanism, the best balance of the inertia force of the mechanism was achieved. The experimental re- sults indicate that the optimization method has some credibility, and the partial equilibrium method applied here is effective for analyzing vibration and noise problem of complex mechanical systems such as the high-speed industrial sewinz ma-chines.

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 

分 类 号：TH112[机械工程—机械设计及理论] O313[理学—一般力学与力学基础]