冷锻压力机广义肘杆机构的运动及静力分析

Motion and statics analysis of generalized knuckle mechanism used in cold forging press

建立了广义肘杆机构的运动学和静力学模型。通过对其进行运动分析,可以看出该机构运动速度和加速度都很平稳,非常适合冷锻作业的需要。通过对该机构的静力分析,获得了该机构在不同工作条件下各杆的受力和偏心轴所需输入扭矩的变化规律,为各杆的强度设计和离合器的选择提供了依据;同时考虑到压力机在工作中可能出现的过载情况,对该情况下可能出现的离合器打滑和闷车也进行了深入的分析。分析发现,该广义肘杆机构冷锻压力机不会出现闷车情况。

The statics and kinematics models of the generalized knuckle mechanism were set up.Through the motion analysis of this mechanism,the smoothness of the velocity and acceleration were obtained which was suitable for cold forging.Through the static analysis,the force of each pole and the input torque of the eccentric shaft in different working conditions were obtained which provided the basis for the strength design of the poles and the selection of the clutch.Moreover,considering the press may be overloaded,the posibility on this situation that the press may be sliding or jamming was further analysised.The result shows that the cold forging press would not be jammed.