油压机液压系统设计_毕业设计.doc

河北农业大学 本科毕业设计说明书 题 目：《油压机液压系统设计》 学 院：机电工程学院 专业班级：机械设计制造及其自动化1401班 学 号： 学生姓名： 指导教师姓名： 指导教师职称： 副教授 2016 年 5 月 30日 《油压机液压系统设计》 机械设计制造及其自动化1401班： 指导教师： 摘要:本设计任务为四柱式油压机，主机最大工作负载设计为1960KN。主机主要由上梁、导柱、工作台、移动横梁、主缸、顶出缸等组成。本文介绍了液压系统的设计方法。通过具体的参数计算及工作情况况分析，制定出总体的设计方案。然后，拟定液压系统原理图。为了解决主缸快进时供油不足的问题，主机顶部设置补油油箱进行补油。主缸的速度换接与安全行程限制通过压力继电器来控制；为了防止产生液压冲击，系统中设有泄压回路，确保设备安全稳定的工作为了保证工件的加工质量，液压系统中设置了保压回路，通过保压使工件稳定的成型。最后，本文对液压站进行了总体布局设计，对重要液压元件进行了外形、结构、工艺设计，进行了比较简要设计。通过液压系统的压力损失和油温温升的验算，液压系统的设计可以满足油压机顺序循环的工作要求，能够实现塑性材料冲压、冷挤、弯曲等成型加工工艺。 关键词：液压系统；油压机；毕业设计 Hydraulic system design of hydraulic press ABSTRACT: This Paper design for the medium frame of hydraulic machines, the mainframe’s largest work load design for 1960KN. Mainframe mainly by the beam、guided、Worktable、Mobile beams、Master cylinder、Cylinder head out of components .This Paper focuses on the hydraulic system design. Through specific parameters and hydraulic mechanic situation analyzes ,formulation of a master control program. By contrast, developed hydraulic control system diagram .Hydraulic systems use cartridge valve integrated control system, integrated cartridge valve control system has good sealing, flow capacity, small pressure characteristics etc. To solve the master cylinder express entered the shortage of oil supply in the top of the mainframe installed oil tank. Master cylinder for the speed of access restrictions and security through the trip exchanging to control switches. To Prevent hydraulic shocks, pressure relief system with a loop to ensure that this equipment can be a safe and stable work. In addition, the paper hydraulic station on the overall layout of the key components of the hydraulic structure、shape、Technique for a specific design. By the loss of hydraulic system pressure and temperature checked. Hydraulic system is designed to meet the hydraulic action sequence and cycle requirements can be achieved by forging plastic materials, stamping, cold extrusion, straighten