融合联立约束法和Simulink的高速压力机曲轴动态仿真

发布时间：2018-11-18 18:18

【摘要】：针对高速曲柄压力机中对称布置式曲柄滑块机构,提出了一种融合联立约束法和MATLAB/Simulink的机构动态仿真分析方法。该方法首先基于机构位移闭环矢量方程,建立速度方程及加速度方程,采用达朗贝尔原理建立机构的动力学方程,并通过加速度实现运动方程与动力学方程的联立。在此基础上利用MATLAB/Simulink软件建立了机构的动态仿真模型,将动力学方程作为Function模块嵌入到仿真模型中。并在冲压力作用下对高速压力机的工作过程进行了仿真分析,快速、准确地求得了一个运动周期内压力机曲轴各个轴颈处载荷大小和方向的变化规律,验证了高速压力机的平衡机构具有良好的动平衡效果。所得分析结果为高速压力机曲轴、曲轴支撑结构和动平衡结构的设计和优化提供了重要的参考依据。
[Abstract]:Aiming at the symmetrical arrangement of crank slider mechanism in high speed crank press, a dynamic simulation analysis method of mechanism combined with simultaneous constraint method and MATLAB/Simulink is proposed. Firstly, the velocity equation and acceleration equation are established based on the displacement closed loop vector equation of the mechanism, and the dynamic equation of the mechanism is established by using the Darumbelian principle, and the kinematic equation and the dynamic equation are combined by acceleration. On this basis, the dynamic simulation model of the mechanism is established by using MATLAB/Simulink software, and the dynamic equation is embedded into the simulation model as a Function module. Under the action of punching pressure, the working process of high-speed press is simulated and analyzed, and the variation law of load size and direction of each crankshaft of press crankshaft in a movement cycle is obtained quickly and accurately. It is verified that the balancing mechanism of high speed press has good dynamic balance effect. The results provide an important reference for the design and optimization of crankshaft, crankshaft supporting structure and dynamic balance structure of high-speed press.
【作者单位】：华北理工大学机械工程学院;
【基金】：河北省高层次人才资助项目(A201400214)
【分类号】：TG305

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