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针对LED(Light Emitting Diode)分拣机定位测试装置工作中存在的定位精度偏低的问题,将该机构3个输出方向上的复杂问题转化为等效的多自由度质量-弹簧-阻尼模型,研究了其运动学、动力学方程。基于动力学仿真软件ADAMS和SolidWorks建立了定位测试装置的虚拟样机参数化实体模型,并进行样机的定性分析和定量分析,验证了所建模型的正确性。通过参数化虚拟样机分析,从复合凸轮转速、系统刚度、预紧力与机构运动输出特性的关系,确定了影响定位测试装置工作定位精度的因素及大小。
In order to solve the problem of low positioning accuracy in the work of LED (Light Emitting Diode) sorter positioning test device, the complex problems of the three output directions of the mechanism were transformed into the equivalent multi-degree-of-freedom mass-spring-damping model. Studied its kinematics and dynamics equations. Based on the dynamic simulation software ADAMS and SolidWorks, the virtual prototyping parametric solid model of the positioning and testing device was established, and the qualitative analysis and quantitative analysis of the prototype were carried out to verify the correctness of the model. According to the analysis of parameterized virtual prototype, the factors influencing the positioning accuracy of the positioning and testing device and the size of the positioning and testing device were determined from the relationship between compound cam speed, system stiffness and preload and the movement output characteristics of the mechanism.