1、 I 摘要摘要 混合驱动可控压力机研究是目前关于压力机改进的研究问题之一。 它是由大 功率的常速电机和小功率的伺服电机作为驱动器， 通过一个两自由度机构合成后 实现可编程的输出运动，从而满足不同产品和不同材料加工工艺的要求。其中常 速电机为系统提供主要的功率和运动，而伺服电动机则只起到调节作用。这使得 混合驱动可控压力机既有传统机械式压力机的高速、高效、高负载等优点，又有 可控性、精确性等优点。从分析其它种类机械式压力机的不足之处入手，对混合 驱动理论的可行性进行论证。并考虑到压力机的典型运动规律，选择了多杆机构 中的混合驱动七杆压力机(I)的运动方案。 鉴于虚拟样机技术的优越性，首先在软件
2、ADAMS 软件的帮助下，建立混 合驱动压力机的三维虚拟样机模型，其中包括：对于混合驱动精压机的基础理论 研究， 主要是对混合驱动压力机系统进行动态静力分析， 研究两电机的受力情况。 建立混合驱动可控压力机的运动学分析模型。再根据压力机加工工艺的特点，采 用运动学优化的方法， 分别对混合驱动压力机的结构参数和伺服电机的运动规律 进行了优化设计，得出滑块运动规律曲线。 关键词关键词： 压力机, 混合驱动七杆机构, 运动学分析, 动力学分析, ADAMS,SOLIDWORKS II Abstract Hybrid-driven controllable mechanical press is on
3、e of the problems in the researchfield of mechanical press improvement.It is combine the motion of a largeconstant velocity motor with a small servomotor via a two degree of freedom mechanism.In this machine,the constant speed motor provides the main powerand motion required,while servomotor acts as
4、 a motion modulation device.Therefore,the hybrid-driven controllable mechanical pres can supplies programmable motion output to meet requirements of different products different materials.So this kinds of mechanical press not only has advantages of classical mechanical(I) press for its high speed,hi
5、gh precision and high load,but also iscon trollable and has great flexibility. Considered the typical kinetic rules of mechanical press,the motion design of the hybrid-driven mechanical press suitable for deep drawing is selected. Because of the superiority of the virtual prototype technique,the thr
6、ee-dimensional full-scale mockup of this mechanical press is set up,including the part and assembly,with the help of software Pro/E.The kinematical model of the hybrid-driven controllable press is set up.Then the forward and inverse kinematics of this mechanical press is analyzed by using loop vector method.Kinematical simulation analysis is also worked out by software Pro/E.On the basis of the kinematical analysis,the equations of two cranks balance moment are studied considering the inertia
