摘要
为了解决国产织机可靠性、稳定性较差,织机速度、运动精度有待进一步提高等问题,借鉴摆动凸轮机构误差分析方法,将凸轮机构反转原理、有效长度理论、转换机构法等多种误差分析技术应用到织机运动精度分析中。开展了剑杆织机共轭凸轮打纬机构在考虑基本尺寸误差、运动副间隙误差及凸轮副磨损误差3种情况下的打纬摇轴摆角误差计算方法的研究,建立了各摆角误差与凸轮转角之间的关系,运用Maple数值分析计算软件对打纬机构的运动精度进行了数学建模及分析计算。研究结果表明,在所考虑的3种主要误差中,共轭凸轮打纬机构的运动精度受凸轮副磨损误差的影响最大,应采取措施控制凸轮副磨损误差。并且该研究对无梭织机的改造和高速剑杆织机的设计应用具有理论指导作用和实用价值。
In order to solve the problems of poor reliability,poor stability,low speed and low precision movement of domestic loom,learning the error analysis method of moving disk-cams and rollers,the inversion principle of cam mechanism,the theory of effective length and the method of conversion mechanism were applied to the movement precision analysis of loom.Considering the three errors including dimension errors,clearances of hinged joints and surface wear caused by conjugate cam in beating-up mechanism,the corresponding calculation methods for position errors of the follower of beating rocker in beating-up mechanism with swing rollers were investigated.The relationship between position errors of the follower and cam angle was established.The motion accuracy simulation of beating-up mechanism was carried out by Maple software.The results show that the surface wear caused by conjugate cam affected the motion accuracy of conjugate cam in beating-up mechanism is greatest in the considered three major errors.It has some guidance and practical value to improvement of shuttle-less loom and development of high speed rapier loom.
出处
《机电工程》
CAS
2014年第2期173-176,202,共5页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51375350
51005170)
关键词
打纬机构
运动精度
共轭凸轮
误差分析
beating-up mechanism
kinetic precision
conjugate cams
error analysis
