多杆高速机械压力机机构优化设计

摘要

为了有效发挥压力机的性能、解决机械压力机高速化带来的一系列问题，建立了一种以曲柄最短、冲压转角最大为评价指标的多杆高速机械压力机主传动机构几何参数综合优化数学模型，并利用MATLAB构建了该机构的优化模型。优化结果表明：该机构的冲压转角增大了13.5％，主滑块加速度减小了35.3％，在下死点附近，位移曲线较平滑，有利于冲裁过程中材料的充分变形和动平衡的设计，且有助于提高下死点的动态精度。%In order to exert the ability of press,and solve a series of problems of high-speed me-chanical press,an compound optimal mathematic model about geometric parameters of main driving organization of high-speed mechanical press was established,which took minimum of crack and maxi-mum of punching angle as the evaluation index.In the meantime,the optimal model was established with MATLAB.The optimization results show that the punching angle of organization is increased by 1 3.5%,and acceleration of main slider is decreased by 3 5.3%.The displacement curve is smooth in the near of bottom dead center.It is beneficial to a bundant deformation of materials in the process of stamping,the design of dynamic balance,and to improve the dynamic precision of the bottom dead center.