【作者】 刘扬；

【导师】 钟康民；

【作者基本信息】 苏州大学 ， 机械制造及其自动化， 2010， 硕士

【摘要】 相对于传统的基于飞轮储能的曲柄-连杆-滑块式机械压力机,伺服电机驱动的机电一体化压力机,具有便于进行自动控制,运动学曲线可编程设计,可以显著提高技术性能等突出优点,因而在近一时期得到了较快发展。但由于尚处于初级发展阶段,现有的伺服压力机尚存在总体设计布局不平衡,不简约,缓冲性能差,以及因为非对称机构而造成摩擦损失大等缺点。本论文根据科学美学的对称性理念,以及串联组合增力机构的设计方法,分别设计了对称布局的一级、二级、三级乃至四级增力的由伺服电机驱动的机电及机电液一体化压力机。所进行的主要研究工作如下:(1)对伺服电机进行了较系统的分析研究,比较了各种伺服电机的技术性能以及如何进行选择,充分运用伺服电机的“电子飞轮”储能技术和可编程控制、精度高等优点。(2)为了在输入转矩相同的条件下,得到相对更大的输出压力,利用增力机构进行对称性串联组合,所设计的基于三级与四级增力机构的伺服压力机,能够利用多级串联增力机构来化解大功率伺服电机价格昂贵的技术难题,适用于冲裁和浅拉伸作业。(3)所设计的基于直线伺服电机与面积增压原理的双工位压力机,只用一个伺服电机就能实现两个工位的顺序作业,机床的经济性好,生产效率高。(4)所设计的机电液一体化压力机,具有良好的缓冲性能。(5)所设计的压力机,大多采用对称结构布局,压头的径向受力平衡,大幅度地降低了摩擦损失。(6)论文中给出的力学计算公式、利用PRO/ENGINNER进行的运动学仿真和利用MATLAB得到的运动学仿真结果,对工程界具有较实用的参考价值和理论指导意义。更多还原

【Abstract】 Compared with traditional crank - linkage - slider mechanical press based on energy storage elements flywheel, machatronics presses driven by servo motor have advantages of easily automatic control, programmable kinematics curves and high technical performance, which lead to its rapid development recent year. However, because of its short development period, the existing servo presses still have some disadvantages, such as the imbalance and complicated overall structure, poor cushion performance and large friction loss due to the non-symmetrical body.Guided by the symmetry idea of scientific aesthetics and creative design method called series combination of force-amplifier, we designed kinds of one-step, two-step, three-step, and four-step force-amplifier mechatronica and hydromechatronics presses driven by servo motor in a symmetrical structure in this paper. My major new researches are:(1) We carried out systematic analysis on servo motor, compared the technology performance of different servo motors and provided our advice on how to choose servo motors in this paper. In our creative design process, we make full use of the“electronic flywheel”energy storage technology and advantages of programmable control as well as its high precision characteristics.(2) To obtained relatively greater output force with the same input torque, three-step and four-step force-amplifier servo presses with a symmetrical structure have been designed, which guided by method of series combinations with force amplifier, can resolve the technical problems of expensive high-power servo motor by using the tandem force amplifier, and suitable for blanking and shallow drawing operation.(3) The duplex press we designed based on linear servo motor and area booster principle can achieve the order of two-station operation with a single servo motor, which results in great machine economy and high production efficiency. (4) The hydromechatronics press we designed has good cushioning properties.(5) Majority of the presses we designed are symmetrical layout, thus reduces the friction loss significantly owing to the balance radial force of pressure head.(6)The mechanical formula of each press we designed are presented in this paper, as well as kinematics simulation by PRO/ENGINNER and kinematics curves by MATLAB, which may have a practical reference value and theoretical guidance in engineering.更多还原