毕业设计-单片机控制四柱液压机设计.doc

毕业设计(论文)-单片机控制四柱液压机设计 摘 要 本设计为中型四柱式液压机主机最大工作负载设计为2500KN主机主要由上梁导柱工作台移动横梁主缸顶出缸等组成通过具体的参数计算及工况分析制定总体的控制方案经方案对比之后主机部分采用三梁四柱式的结构形式拟定液压控制系统原理图液压系统液压缸采用双作用活塞缸采用恒功率变量泵供油经方案对比之后拟定液压控制系统原理图为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行程开关来控制为了保证工件的成型质量液压系统中设置保压回路通过保压使工件稳定成型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详细设计了主机机械部分和液压部分对电气控制系统进行了简要设计 通过液压系统压力损失和温升的验算本文液压系统的设计可以满足液压机顺序循环的动作要求能够实现塑性材料的锻压冲压冷挤校直弯曲等成型加工工艺 关键词液压系统液压机四柱式单片机控制 ABSTRACT This paper design for the medium frame of hydraulic machines the mainframes largest work load design for 2500KN Mainframe mainly by the beamguidedworktablemobile beamsmaster cylindercylinder head out of components etc 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 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 switchesTo ensure the quality of the work-piece molding in the hydraulic system installed packing loop through packing work-piece stability molding 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 structureshapetechnique 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 straightening bending and other molding processes Keywords Hydraulic System Hydraulic Pressure machinefour-guideds 目 录 第1章 绪论 1 11 液压机现状概要 1 12 发展趋势 2 第2章 四柱液压机总体设计 5 21 四柱液压机主要设计参数 5 22 四柱液压机总体布局方案设计 5 第3章 液压系统设计 8 31 液压机主缸工况分析 8 com 主缸速度循环图