数控精密中小孔珩磨机液压系统设计汇总.doc

数控精密中小孔珩磨机液压系统设计 摘 要 本次设计的液压系统包含机械手液压系统和夹具液压系统。其中液压传动机械手根据规定的动作顺序，综合运用所学的基本理论、基本知识和相关的机械设计专业知识，完成对机械手的设计，并绘制必要装配图、液压系统图。机械手的机械结构采用油缸、导向筒等机械器件组成；在液压传动机构中，机械手的手臂伸缩采用伸缩油缸，立柱的转动采用伸缩油缸，机械手的升降采用升降油缸，立柱的横移采用横向移动油缸。在PLC控制回路中，当按下连续启动后，PLC按指定的程序，通过控制电磁阀的开关来控制机械手进行相应的动作循环，当按下连续停止按钮后，机械手在完成一个动作循环后停止运动。夹具采用横向移动油缸，在PLC控制下配合机械手运动，完成工件的加紧与松放。 关键词 机械手；夹具；液压；控制回路 Hydraulic system design for CNC precision honing machine Abstract The design of the hydraulic system contains hydraulic system of manipulator and clamp hydraulic system. The hydraulic drive manipulator according to the provisions of the action sequence, the basic theory, comprehensive use of the basic knowledge of mechanical design and related professional knowledge, to complete the design of manipulator, and draw the necessary assembly drawing, hydraulic system diagram. The mechanical structure of the manipulator using the cylinder, cylinder and other mechanical components; in the hydraulic transmission mechanism, a telescopic arm manipulator with telescopic cylinder, column is rotated in a telescopic cylinder, lifting manipulator with lifting cylinder, vertical traverse the transverse moving oil cylinder. In the PLC control loop, when pressed for startup, PLC according to the specified procedure, to control the manipulator by controlling the switch of the electromagnetic valve for the corresponding action cycle, when you press the stop button after continuous, mechanical hand in a cycle of operation is completed after the cessation of movement.Fixture with transverse moving oil cylinder, with the mechanical hand movement under the control of the PLC, the completion of workpiece stepping up and release. Key words mechanical hand ;fixture;hydraulic pressure;control loop 目 录 第一章 绪论 1 1.1 液压技术发展趋势 1 1.2 国内外对液压产品技术的提高 3 1.3 课题研究的对象和研究方法 4 第二章 拟定液压系统原理图 5 2.1 液压系统原理图 5 2.2 液压系统特点分析 6 2.3 液压系统电磁铁动作顺序表 7 2.4 液压系统工作原理 8 第三章 计算和选择液压元件 12 3.1 执行元件——液压缸、液压马达 13 3.1.1 手指夹紧缸 14 3.1.2 手臂伸缩缸 16 3.1.3 手臂升降缸 22 3.1.4 手臂回转液压缸 27 3.1