机电2班

哈尔滨应用职业技术学院毕业论文题目卧式组合钻孔专用机床液压系统学生姓名石俭飞系部名称自动化系专业班级机电一体化二班指导教师卜丽华、张佳欣起止时间教务处制毕业论文项目表填表日期年月日迄今已进行周剩余周学生姓名石俭飞系部自动化系专业、班级机电一体化二班指导教师姓名卜丽华、张佳欣职称从事专业是否外聘□是□否题目名称卧式组合钻孔专用机床液压系统指导教师意见指导教师签字：年月日系意见系主任签字：年月日毕业答辩成绩：年月日小组答辩委员会成员签字：年月日答辩委员会主任签字：年月日哈尔滨应用职业技术学院毕业设计（论文）I摘要：本文首先对液压系统进行工况分析，通过分析计算，绘制速度、负载循环图，初步选定液压缸工作压力，并计算加紧液压缸和工作缸尺寸以及各阶段流经液压缸的流量；其次根据液压系统供油方式、调速方式、速度换接方式以及加紧回路的选择拟定液压系统图，并且对系统工作状态分析；再次通过对流通各元件的的流量的计算，合理选择液压系统元件；最后通过对压力损失和系统升温的验算，对液压系统进行性能分析，达到要求。关键词：工况分析；液压系统原理图；液压泵；液压阀；压力损失哈尔滨应用职业技术学院毕业设计（论文）IIAbstract：Accordingtotherequirementsofthemissionstatementtitle,thefirstconditionofthehydraulicsystemanalysis,throughanalysisandcalculation,renderingspeed,dutycyclegraph,theinitialselectionofhydrauliccylindersworkingpressure,andcalculatedtointensifytheworkofhydrauliccylindersandcylindersizeandflowofthevariousstagesThehydrauliccylinderoftheflow;secondoilhydraulicsystemaccordingtomode,speedmode,thespeed-for-accessapproachandthechoiceofsteppingupthedevelopmentofhydraulicsystemcircuitdiagramandworkingstatusofthesystem;onceagainflowthroughvariouscomponentsoftheflowCalculation,areasonablechoiceofhydraulicsystemcomponents;lastthroughthepressurelossandtemperatureofthecheckingsystem,hydraulicsystemperformanceanalysis,meettherequirements.Keywords:EngineeringAnalysis;hydraulicsystemdiagram;hydraulicpump;hydraulicvalve;pressureloss哈尔滨应用职业技术学院毕业设计（论文）目录摘要：....................................................................................................................................IAbstract：.............................................................................................................................II第一章绪论.........................................................................................................................11.1液压传动的发展概况..........................................................................................11.2液压传动的工作原理和组成..............................................................................21.3液压传动的定义和优缺点..................................................................................31.3.1液压传动的定义............................................................................................31.3.2液压传动的优缺点.......................................................................................31.4液压传动的研究现状..........................................................................................41.5课题研究的目的、意义及内容..........................................................................51.5.1本课题研究的目的、意义.........................................................................51.5.2本课题研究的内容.....................................................................................5第二章现代液压技术的应用.............................................................................................62.1液压技术的应用..................................................................................................62.1.1液压技术的应用领域....................................................................................62.1.2静液压传动装置的应用................................................................................6第三章钻床液压系统的设计.............................................................................................83.1工况分析..............................................................................................................83.2主要参数的确定..................................................................................................93.3拟定液压系统原理图........................................................................................103.3.1调速方法及供油形式的确定......................................................................103.3.2换向方式的确定..........................................................................................113.3.3工作进给油路的确定..................................................................................113.4选择液压元件....................................................................................................133.4.1选择液压泵..................................................................................................133.4.2选择液压阀..................................................................................................143.4.3选择辅助元件..............................................................................................153.5验算液压系统性能............................................................................................153.5.1压力损失验算..............................................................................................153.5.2油液升温验算..............................................................................................15结论...................................................................................................................................16致谢.................................................................................................................................17参考文献.............................................................................................................................18哈尔滨应用职业技术学院毕业设计（论文）1第一章绪论1.1液压传动的发展概况液压传动相对于机械传动来说，它是一门新学科，从17世纪中叶帕斯卡提出静压传动原理