防摆吊具刚柔耦合动力学分析与结构拓扑优化

传统吊装夹具应用在有色金属板电解、检测、分拣等工序的搬运等过程,易会出现摆动磕碰等情况,需要设计一种在吊装运动过程中可以防止金属板摆动和减少对金属板表面质量损坏的防摆机构。通过在Pro/E中建立吊装夹具三维模型并装配出整体机构,由于防摆机构在工况下高速运动并且为薄板零件,所以通过柔性体替代刚体进行动力学分析,以模仿真实运动情况。利用HyperMesh做模态分析,导出MNF文件到ADAMS中,建立机构的刚柔耦合模型。动力学分析输出各构件在防摆机构夹紧运动过程中各铰接处的受力情况以及接触处的冲击载荷。利用OptiStruct进行拓扑优化使得机构整体结构减重48.1%,减轻工业机器人的工作负载,减少对金属板表面的冲击,以获取更好的运动性能。

Dynamic Analysis of Rigid-flexible Coupling and Topological Optimization of Anti-pendulum Spenders

Traditional hoisting jig will swing and bump in the handling process of non-ferrous metal plates in the electrolysis,detection,sorting and other processes.It is necessary to design an anti-swing mechanism which can prevent the metal plate from swinging and reduce the damage to the metal plate surface quality in the lifting movement.The three-dimensional model of the hoisting jig is established in Pro/E and the whole mechanism is assembled.Since the anti-pendulum mechanism moves at high speed under the working condition and is a thin plate part,the rigid body is replaced by flexible body for dynamic analysis to imitate the real motion.Using HyperMesh for modal analysis,the MNF file was exported to ADAMS,and the rigid and flexible coupling model of the mechanism was established.Dynamic analysis of the output components in the anti-swing clamping motion of each hinge and the impact load at the contact.Using OptiStruct for topological optimization,the overall weight loss structure of the mechanism is 48.1%to reduce the load of industrial robots,reduce the impact on the surface of metal plates,and obtain better motion performance.