基于solidworks的双偏心曲柄摆剪的动力学分析

Dynamic Analysis of Couple Off- Center Flying Shear Based on Solidworks

应用Solid Works建立了双偏心曲柄摆式飞剪的三维模型,并应用Solid Works-motion对其进行了动力学研究。重点考察了空载时和加载时双偏心主轴的扭矩变化,双偏心轴的启动相位角的影响以及重要部件的应力。仿真结果表明:双偏心轴启动相位角为45°时,主轴的扭矩较小并且垂直剪切速度最大,为779 mm/s。加载后,主轴扭矩为2.5×108N·mm,主轴所受应力分布最均匀,其值最小。剪切过程中的冲击力对铜套磨损的影响不大,而摩擦是主要的因素。

A three-dimensional model of couple off-center flying shear is established applying Solid- works and dynamics research is done using SolidWorks-motion. The torque changes of the double ec- centric shaft with upload and load is studied, and the influence of double eccentric shaft start-up phase angle to the stress of key component. The simulation results show that： when the double ec- centric shaft start-up phase angle is 45°, the spindle torque is small and the vertical velocity of up shear blade is the largest for 779 mm/s. After loading, the main shaft torque is 2.5 × 10^8 N ·mm, the stress distribution in the spindle with minimum value is more homogeneous. The effect of the im- pact to copper bushing in the process of shearing is less than the wear. The friction is the main fac- tors.