Research on positioning & testing instrument in LED sorting machine based on virtual prototype

Aiming at the problem that the positioning precision of the positioning-testing device in LED sorting machine is much lower,the complicated problems in three output directions of the mechanism were converted onto the equivalent multi-degree of freedom mass-spring-damping model,and both it's Kinematics and dynamic equations were studied.The parameterized solid model of virtual prototype for the mechanism was established based on ADAMS and solidworks dynamic simulation software,the qualitative and quantitative analysis of the virtual prototype were carried out,and the correctness of the established model was verified.Based on theanalysis of the parameterized virtual prototype,the factor and its degree that has influence on the positioning-testing device was determined from relationship between compound cam speed,system stiffness as well as the positioning-testing and mechanism dynamic out-put characteristics.