摘要
为分析旋转变速机构输出运动规律对综框运动特性的影响,建立基于固定凸轮-连杆组合机构的旋转变速机构运动规律反求与凸轮廓线设计模型,提出简谐修正等速的拟合运动规律并进行机构运动学仿真分析。结果表明:旋转多臂提综机构实现了织机主轴等速运动转变为提综臂具有约60°停顿时间的变速反复摆动运动,利于引纬工艺要求;当一个周期内对应主轴转角各阶段均相等时,综框运动连续且无突变,其运动特性良好满足织机开口工艺要求,类角跃度不连续为提综机构尺度优化与综框运动规律优选提供理论参考与设计依据。
In order to research the influence of the output motion law of the modulator mechanism,a reversed motion law and profile design model of the modulator mechanism based on the fixed cam-linkage combination mechanism was established.The fitting motion law of simple harmonic correction constant velocity is proposed and kinematics simulation analysis is carried on.The results show that the rotary dobby lifting mechanism achieves the variable-speed repeated swing motion of the lifting arm with approximately 60°pause time,which is beneficial to the weft insertion process.When the corresponding rotation angle in one cycle is equal,the movement of the heald frame is continuous and has no abrupt change,which meets the requirements of the opening process.However,the discontinuity of the angular degree provides a theory and design reference for the optimization of the lifting mechanism and the motion law of the heald frame.
作者
周国庆
龚文强
袁汝旺
蒋秀明
刘瑀
ZHOU Guo-qing;GONG Wen-qiang;YUAN Ru-wang;JIANG Xiu-ming;LIU Yu(Tianjin Key Laboratory of Advanced Mechatronics and Equipment Technology,Tiangong University,Tianjin 300387,China)
出处
《天津工业大学学报》
CAS
北大核心
2019年第6期58-62,68,共6页
Journal of Tiangong University
基金
国家科技支撑计划重点项目(2011BAF08B02)
关键词
旋转式电子多臂
提综机构
运动学分析
固定凸轮-连杆机构
rotary electronic dobby
heald lifting mechanism
kinematic analysis
fixed cam-linkage mechanism
