工业缝纫机挑线机构的运动学研究
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摘要
挑线机构对缝制速度和精度的影响很大,直接影响着缝制的质量与缝纫机的优良,因此急需解决机构的动态特性及轨迹优化问题。通过对连杆挑线机构进行数学建模,参数化计算,以及仿真分析,得到了连杆挑线机构的轨迹形状,并以此分析了缝纫机挑线轨迹形状对缝制性能的影响。通过直接修改连杆长度、铰接点位置来实时、快速、精确控制曲线变化趋势、范围,为机构的设计、优化、评价提供理论参考依据,保证设计的可行性,最后通过仿真分析了四连杆挑线机构的末点的轨迹、位移和速度,为行业的研究人员提供了优化缝纫线迹的方法。
The thread take-up mechanism has an important influence on the sewing speed and precision, which directly affects the sewing quality and the performance of sewing machine. Therefore, it is urgent to solve the dynamic characteristics of the mechanism and the trajectory optimization problem. In this paper, through mathematical modeling, parametric calculation and simulation analysis of the thread take-up mechanism, the trajectory shape of the mechanism was obtained, and the influence of trajectory shape on the sewing performance was analyzed. The variation trend and range of the curve were controlled in real time, quickly and accurately by directly modifying the length of the link and the position of the hinged point. This study provides a theoretical reference for the design, optimization and evaluation of the mechanism so as to ensure the design feasibility. Finally, the trajectory, displacement and velocity of the end point of the four-link take-up mechanism were analyzed by simulation. This study provides a method of optimizing sewing stitch for researchers in the industry.
The thread take-up mechanism has an important influence on the sewing speed and precision, which directly affects the sewing quality and the performance of sewing machine. Therefore, it is urgent to solve the dynamic characteristics of the mechanism and the trajectory optimization problem. In this paper, through mathematical modeling, parametric calculation and simulation analysis of the thread take-up mechanism, the trajectory shape of the mechanism was obtained, and the influence of trajectory shape on the sewing performance was analyzed. The variation trend and range of the curve were controlled in real time, quickly and accurately by directly modifying the length of the link and the position of the hinged point. This study provides a theoretical reference for the design, optimization and evaluation of the mechanism so as to ensure the design feasibility. Finally, the trajectory, displacement and velocity of the end point of the four-link take-up mechanism were analyzed by simulation. This study provides a method of optimizing sewing stitch for researchers in the industry.
引文
[1] 邹慧君,雷杰,杜如虚,等.现代缝纫机原理与设计[M].北京:机械工业出版社,2015.
[2] 彭国勋,陈满儒.高速平缝机挑线机构动力学研究[J].陕西科技大学学报,1985(2):4-21,59.
[3] NB.加尔巴鲁克,魏思(译).锁式线迹缝纫机主要机构的设计与计算[M].上海:全国缝纫机工业科技情报站,1981.
[4] 张侃曼,马晓建,郭金柱,等.高速工业缝纫机动力学仿真与分析[J].轻工机械,2010,28(2):17-21.
[5] 张顺琦,秦现生,邓瑞君,等.组件化的装配生产线快速设计[J].中国机械工程,2010,21(21):2584-2589.
[6] 张莉,冯定忠,李创,等.基于运动轨迹误差分析的送料性能评估[J].纺织学报,2012,33(9):143-147.
[7] 邹慧君,田永利,张清,等.缝纫机创新设计的基本理论与方法[J].机械设计与研究,2002,18(3):56-58.
[8] 李瑞琴,邹慧君.现代机构的创新设计理论与方法研究[J].机械科学与技术,2003,22(1):83-85.
[9] 孙桓,陈作模,葛文杰.机械原理[M].北京:高等教育出版社,2007.
[2] 彭国勋,陈满儒.高速平缝机挑线机构动力学研究[J].陕西科技大学学报,1985(2):4-21,59.
[3] NB.加尔巴鲁克,魏思(译).锁式线迹缝纫机主要机构的设计与计算[M].上海:全国缝纫机工业科技情报站,1981.
[4] 张侃曼,马晓建,郭金柱,等.高速工业缝纫机动力学仿真与分析[J].轻工机械,2010,28(2):17-21.
[5] 张顺琦,秦现生,邓瑞君,等.组件化的装配生产线快速设计[J].中国机械工程,2010,21(21):2584-2589.
[6] 张莉,冯定忠,李创,等.基于运动轨迹误差分析的送料性能评估[J].纺织学报,2012,33(9):143-147.
[7] 邹慧君,田永利,张清,等.缝纫机创新设计的基本理论与方法[J].机械设计与研究,2002,18(3):56-58.
[8] 李瑞琴,邹慧君.现代机构的创新设计理论与方法研究[J].机械科学与技术,2003,22(1):83-85.
[9] 孙桓,陈作模,葛文杰.机械原理[M].北京:高等教育出版社,2007.