一阶椭圆与二阶共轭非圆齿轮络交机构的设计与仿真

Design and Simulation of Traverse Mechanism Consisting of a First-order Elliptical Gear and a Second-order Conjugated Non-circular Gear

EB型缫丝机络交机构的结构复杂、传动路线长、行程运动两端速度变化过快,导致丝片成形容易塌边,因此提出一种一阶椭圆与二阶共轭非圆齿轮络交机构。建立了一阶椭圆与二阶共轭非圆齿轮节曲线数学模型并完成共轭凸轮工作轮廓设计,根据设计尺寸建立新型络交机构模型。通过ADAMS软件建立新型络交机构运动仿真并分析丝线成形,可以看出该机构具有良好运动特性,能够满足丝片成形要求。

The traverse mechanism of EB silk reeling machine is of a complex structure, its transmission line is long, and its speed changes fast at the two ends of movement journey, which results in that turned-down edge easy to occur in yarn sheet shaping. Hence, a traverse mechanism consisting of a first-order elliptical gear and a second-order conjugated non-circular gear is put forward. A mathematic model of first-order elliptical and second- order conjugated non-circular gear pitch was built, the working profile of conjugated cam was designed, and a new traverse mechanism model was built according to the design size. Motion simulation of new traverse mechanism was carried out with ADAMS software, and silk yarn shaping was analyzed, which shows that the mechanism is of good kinematics characteristics, and can meet the requirements of yarn sheet shaping.