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电动式钢管自动测长机构设计毕业论文.doc

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电动式钢管自动测长机构设计毕业论文.doc

I摘要钢管是一种用途广泛的工业金属材料,也是国民经济发展的一个重要支柱。本文根据国内外钢管生产线上精整区测长系统的研究开发现状,以测长的硬件设计及控制系统和软件系统作为设计研究的主要工作本文叙述了钢管的工艺生产流程及API国际标准说明了国内测长系统的开发现状及存在的问题并阐述了开发测长系统的必要性陈述了课题的来源和论文的主要工作和意义。提出了系统设计的设计要求根据系统的整体组成结构,进行了测长系统的设计,包括系统组成和工作过程以及设计时应注意的问题最后给出了控制系统和软件系统的总体设计方案及主要硬件的参数,简述了PLC编程的方式S7400的特点性,提出了PLC程序的测试策略。提出了上位机软件的测试策略和监控系统的特点。提出了PLC的IDEF0表示着重介绍了PLC程序的模块化设计以及各个工位的程序流程、程序功能块的划分以及与上位机通讯的基本原理和时序图,介绍了上位机监控系统的功能模块的设计陈述了上位机通讯方案的设计,而且在机械关键部分进行了计算和校核。最后总结了测长控制系统和软件系统开发过程所做的工作,并对系统的改进方向进行了展望。关键词钢管测长PLC电机编码器光电传感器ABSTRACTSteeltubeiswidelyusedasasortofmetallicmaterialinindustryandhasalsocontributedmuchtothenationaleconomicdevelopment.Inthispaper,onthebasisofthecurrentsituationofresearchonsteeltubesmeasure,weight,pinstamp,band,stencilsystembothhereandabroad,withtheaimofresearchinganddevelopingthemeasuresystemfor2ndproductlineinTianjinPipeCorporation,technologicalprocessofsteeltubeandtheinternationalstandardAPIareintroduced.ThenthecurrentsituationofresearchandproblemsonMWBPSsysteminChinaaredescribed.Andalso,thenecessitiesoftheimprovementofmeasuresystemareexplained.Finally,thesourceofthisprojectandthemaincontentsaswellasthesignificanceofthispaperarementioned.thedesignrequirementsofthissystemarepresented.Then,accordingtothesystemsintegralstructure,theauthordepictedthedesignofrelevantmeasuresubsystem.stepsystemandetc,includingthecomponents,workingprocessofthesystemandtheprecautionswhendesigning.Finally,ThewholedesignofthecontrolsystemandsoftwarearealsopresentedAndthemajorhardwareparameters.PLCprogrammethodandthecharactersofS7400seriesareintroducedinbrief.TheteststrategyofthePLCprogramisalsoputforward.Finally,thetestingstrategyoftheuplevercomputersoftwareandthecharactersofthemonitoringcontrolsystemareputforward.TheexpressionsofPLCbyIDEF0arealsoputforward.AttentionaremainlyfocusedonthemodulardesignofPLCprogram,flowfigureofeachsubsystem,theassignmentoftheprogramfunctionblock,thecommunicationprinciplebetweenPLCanduplevercomputerandthetimingsequencediagram.Furthermore,thedesignofthefunctionmoduleblockofthemonitoringcontrolsystemofuplevercomputerisintroduced.Subsequently,thecommunicationprojectofuplevercomputerisdesigned.MainlyonthemechanicalpartofthecalculationandverificationTheworkandaccomplishmentinthereconstructionofmeasurecontrolsystemandsoftwarearesummarized,andmoreover,waystoimprovethissystemarepointedout.KeywordssteeltubemeasurePLCMotorMotorencoderPhotoelectricsensorI目录1绪论...........................................................................................................................................11.1课题研究的背景..................................................................................................................11.2钢管自动测长系统的的分类..............................................................................................21.3目前国内钢管自动测长的发展状况及趋势......................................................................41.3.1国内钢管自动测长发展状况......................................................................................41.3.2钢管自动测长的发展方向..........................................................................................42方案原理的设计.........................................................................................................................52.1测长系统的设计................................................................................................................52.1钢管自动测长原理..............................................................................................................52.3各部件方案选择及说明......................................................................................................72.3.1传动方案说明..............................................................................................................72.3.2光电传感器的选择及说明..........................................................................................92.3.3光电脉冲编码器的选择及说明.................................................................................102.3.4应用中问题分析及改进措施...................................................................................112.4控制系统的方案................................................................................................................122.4.1PLC在工业应用中的优势........................................................................................122.4.2PLC在工业中应用优势的系统说明........................................................................132.4.3上位机监控系统的特点.............................................................................................152.4.4上位机监控系统的测试策略....................................................................................163部件设计及计算.......................................................................................................................173.1推钢机构的设计................................................................................................................173.1.1动力传动齿轮的设计..................................................................................................173.1.2动力齿轮与齿条传动计算..........................................................................................203.1.3编码器传动齿轮的设计..............................................................................................213.1.4键的选择与计算........................................................................................................223.1.5螺栓的选择与校核计算............................................................................................223.2误差的分析........................................................................................................................233.2.1误差理论分析............................................................................................................233.2.2减小误差的措施.........................................................................................................253.3测长系统设计关键点........................................................................................................264控制系统...................................................................................................................................274.1PLC程序设计...................................................................................................................274.1.1PLC软件及编程..........................................................................................................274.1.2S7400编程方式.....................................................................................................274.1.3PLC程序设计............................................................................................................284.1.4PLC程序的测试........................................................................................................354.2上位机监控系统的设计....................................................................................................364.2.1上位机系统监控功能模块设计................................................................................364.2.2上位机监控系统的通讯设计.....................................................................................395总结与展望...............................................................................................................................405.1总结.....................................................................................................................................405.2展望....................................................................................................................................40致谢...............................................................................................................................................41参考文献.......................................................................................................................................42附录.................................................................................................................错误未定义书签。附录1...............................................................................................................错误未定义书签。附录2..........................................................................................................错误未定义书签。

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