混合驱动凸轮连杆机械压力机的分析与仿真

Analysis and Simulation of Hybrid Cam-linkage Mechanical Press

分析了将混合驱动凸轮连杆机构应用于机械压力机的意义,提出了一种混合驱动凸轮连杆机械式压力机的机构构型,分析了其运动原理。用回路矢量法对混合驱动凸轮连杆机械压力机进行了运动学分析。并给出了一个设计实例,利用Pro/Mechanism模块对其进行了机构运动仿真,结果表明该机构能使滑块实现多种运动规律以满足加工要求。通过对混合驱动七杆压力机的结构特性和运动仿真分析,得出了混合驱动凸轮连杆压力机相对混合驱动七杆压力机具有杆长条件容易满足和滑块输出运动规律特性好等优点。最后建立混合驱动凸轮连杆压力机的动力学模型,对其进行了功率分配研究。

The significance of applying hybrid cam - linkage mechanism to mechanical press is expounded. This new type of mechanistic configuration for the hybrid cam - linkage mechanical press is proposed and its kinematic principle is analyzed. Using complex number vector method, the inverse kinematic analysis of this hybrid mechanism is carried out and the actual operating function that can meet the demand of processing techniques is worked out. Based on Pro/Mechanism, The mechanism motion simulation is done. The results show that the hybrid cam - linkage mechanical press can realize multiple motion specification and satisfy multi - technique request fi＇om slider velocity characteristics in the course of process. According to the structure analysis and simulation for hybrid seven - bar mechanism, the conclusion that compared to the hybrid seven- bar press, the hybrid cam - linkage press has the merits of easy link lengths restriction and good motion output is obtained. At last, the dynamic simulation model is designed, and the power distribution of the constant speed motor and the servo - motor is analyzed.