摆动式飞剪机构的运动学分析与仿真优化  

Kinematics Analysis and Simulation Optimization of Swing-out Flying Shears Mechanism

作　　者：李海波[1] 耿葵花[1] 马小波[1] 

机构地区：[1]广西大学机械工程学院,南宁530004

出　　处：《机械工程师》2016年第6期29-32,共4页Mechanical Engineer

摘　　要：以摆动式飞剪机构为研究对象,利用闭环矢量法分析其运动学模型,建立了上、下刀尖点的位移方程,由此可通过求导方便地得出上、下刀尖点的速度和加速度方程。为直观地显示上、下刀尖点随曲柄转动的变化,通过Matlab平台编制程序绘制了上、下刀尖点的位移-曲柄转角曲线图,并依据所建立的运动学优化模型通过进一步的编程对摆动式飞剪机构的关键尺寸进行了优化,得出了一组关键尺寸的最优值。同时,在机械系统多体动力学仿真软件Adams中建立了摆动式飞剪机构的三维模型,进行运动学仿真和关键尺寸优化,结果与Matlab得出的结论一致,验证了理论分析的正确性。This paper studies the swing-out flying shears mechanism. Closed-loop vector method is used to analyze the kinematics model. Meanwhile we build the upper and the lower hlade points＂ displacement equations, so the upper and the lower blade point＇s velocity and acceleration equations can be go! easily using derivative of displacement. In order to visually show the process of tile upper and the lower blade points following the change of the crank, this paper draws the displacement of the upper and lower blade points - crank angle curve and optimizes＇thee key size by programming in Matlab, then obtains the optimal value of a set of key dimensions. Meanwhile 3D model of the swing-out flying shears mechanism is established to complete the kinematics simulation and the key size optimization in ADAMS. The simulation results are consistent with the conclusion using Matlab, so the correctness of the theoretical analysis is verified.

关 键 词：飞剪 摆动式 运动学模型 仿真优化 

分 类 号：TG333.21[金属学及工艺—金属压力加工]