变导程螺旋引纬机构运动特性分析  

Motion characteristics analysis of variable lead screw weft insertion mechanism

作　　者：詹雄烽 赵世海[1,2] 袁汝旺[1,2] ZHAN Xiongfeng;ZHAO Shihai;YUAN Ruwang(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津工业大学天津市现代机电装备重点实验室,天津300387

出　　处：《毛纺科技》2023年第5期108-114,共7页Wool Textile Journal

基　　金：国家重大技术装备攻关工程项目(2021-1635-06);天津市131创新型人才团队项目(201916);中国纺织工业联合会应用基础研究项目(J202003)。

摘　　要：为了研究曲柄滑块机构及变导程螺旋传动机构运动特性,采用平面解析法建立了曲柄滑块机构的运动学模型,并利用MatLab对其机构特性进行仿真。以标准椭圆比函数作为引纬运动规律,应用多项式拟合,建立了滑块位移与螺杆转角的函数方程,并推导出变导程螺杆的螺旋线方程、螺旋升角及导程的表达式;分析了螺旋传动的工作原理和影响螺旋传动效率的因素,将螺旋升角控制在合理的范围以提高螺旋传动效率;选择摩擦因数较小的螺旋副材料并配以合理的润滑方式。In order to study the motion characteristics of crank slider mechanism and variable lead screw drive mechanism,the kinematic model of crank slider mechanism was established by plane analysis method,and the mechanism characteristics were simulated by MatLab.Taking the standard elliptic ratio function as the motion law of filling insertion,the functional equation of slider displacement and screw rotation angle was established by polynomial fitting,and the spiral equation,screw lift angle and lead were derived.The working principle and the factors affecting the efficiency of screw transmission were analyzed.The ways to improve the efficiency of screw transmission were put forward:controlling the spiral angle in a reasonable range;selecting screw pair material with small friction coefficient and matching with reasonable lubrication.

关 键 词：变导程 引纬机构 螺旋传动 传动效率 

分 类 号：TS103[轻工技术与工程—纺织工程]