Kinematic Modeling and Characteristic Analysis of Eccentric Conjugate Non-circular Gear & Crank-Rocker & Gears Train Weft Insertion Mechanism

A novel weft insertion mechanism named eccentric conjugate non-circular gear & crank-rocker & gears train weft insertion mechanism was proposed in order to better meet the requirements of rapier loom's weft insertion mechanism as well as reduce the manufacturing difficulty. Meanwhile, based on the working principle of this mechanism, kinematical mathematic models of this mechanism were established and an aided analysis and simulation software was compiled. The influences of eccentricity ratio, deformation coefficient, and other important parameters on the kinematics characteristics of this mechanism were analyzed by using the software. A group of preferable parameters which could meet the requirements of weft insertion technology were obtained by means of human-computer interactive optimization method. The maximum velocity, maximum acceleration, and variation of acceleration of this mechanism are smaller than those of the conjugate cam weft insertion mechanism applied on TT96 rapier loom under the conditions of the same unilateral total stroke of rapier head and the same rotary speed of loom spindle; meanwhile the other demands of weaving technology can be met by this novel weft insertion mechanism.

偏心齿轮的共轭非圆齿轮及其渐开线齿廓

讨论了与偏心齿轮共轭的非圆齿轮及其渐开线齿廓.说明该共轭非圆齿轮并非同一的偏心齿轮,它的节曲线取决于偏心圆的偏心率,渐开线齿廓曲线的形状也主要取决于偏心率的数值.

偏心齿轮的共轭非圆齿轮的设计

讨论了与一个偏心的圆齿轮共轭的非圆齿轮及其传动设计的有关问题。该共轭非圆齿轮本质上不是一个相同的偏心齿轮 ,它的传动设计取决于偏心圆的偏心率大小 。

丝绒织机行星式割刀机构原理分析

本文讨论了三种丝绒织机上割绒机构。用解析法,借助计算机对其中一种行星齿轮割刀传动机构进行了运动分析。并讨论了行星齿轮割刀传动机构在割刀过程一定的条件下最大的割绒门幅。

丝绒织机割刀机构原理分析

本文用解析法借助计算机对丝绒织机两种机上割绒机构:偏心齿轮及其共轭齿轮割刀传动机构和行星齿轮割刀传动机构进行运动分析,并讨论行星齿轮割刀传动机构在割刀动程一定的条件下的最大割绒门幅以及机构结构点对绳子变形的影响.

共轭凸轮引纬机构设计

为了开发剑杆织机的引纬运动装置，对织机的引纬类型进行了研究。针对共轭凸轮引纬机构，分析了引纬机构中剑头的运动规律，得到剑头相对于共轭凸轮运动要求为具有两次停歇的往复摆动；根据摆角变化特点，建立了平面四连杆机构的图解法模型，给出了设计平面四连杆机构的方法和步骤；再结合剑杆加速度运动规律，通过MATLAB编程软件求解得到共轭凸轮工作轮廓线；最终，得到引纬机构的所有尺度。