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台式车床车头箱孔系加工分配箱机构设计说明书.doc

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台式车床车头箱孔系加工分配箱机构设计说明书.doc

盐城工学院机械工程系毕业设计说明书1目录0引言.............................................................................................................................11.主传动设计................................................................................................................61.1主传动方案.........................................................................................................................................................61.1.1传动布局...............................................................................................................................................61.1.2变速方式...............................................................................................................................................61.1.3传动系统...............................................................................................................................................71.1.4设计原则...............................................................................................................................................71.2主传动运动设计............................................................................................................................................71.2.1制定工艺方案......................................................................................................................................71.2.2确定切削用量......................................................................................................................................81.2.3传动计算...............................................................................................................................................92.主轴设计..............................................................................................................122.1结构设计..................................................................................................................................................122.1.1确定切削力、切削扭矩、切削功率及刀具耐用度.................................................................132.1.2初步估算轴的直径...........................................................................................................................142.1.3轴的结构分析及轴上零件的固定...............................................................................................152.2轴的强度校核.............................................................................................................................................162.3轴的刚度校核........................................................................................................................................223.齿轮的设计.....................................................................................................253.1齿轮的结构分析.........................................................................................................................................253.2齿轮传动主要参数的选择....................................................................................................................253.2.1压力角a的选择............................................................................................................................253.2.2齿数和模数的选择.....................................................................................................................263.2.3传动比和齿数比............................................................................................................................263.2.4齿宽系数¢d........................................................................................................................................263.3齿轮的精度设计........................................................................................................................................273.4齿轮传动的强度计算....................................................................................................................................31台式车床车头箱孔系加工分配箱机构设计24.分配箱及其附件................................................................................................344.1箱体的结构型式........................................................................................................................................344.1.1铸造箱体...........................................................................................................................................344.1.2铸造箱体的结构分析.....................................................................................................................344.1.3箱体的结构尺寸..............................................................................................................................344.2分配箱附件的选择及结构........................................................................................................................354.2.1油标....................................................................................................................................................354.2.2排油孔螺塞........................................................................................................................................354.2.3起吊装置...........................................................................................................................................374.2.4定位销................................................................................................................................................375.分配箱的润滑和密封..........................................................................................385.1分配箱的润滑..............................................................................................................................................385.1.1齿轮的润滑........................................................................................................................................385.1.2轴承的润滑........................................................................................................................................385.2分配箱的密封..............................................................................................................................................396.结论.........................................................................................................................40致谢.............................................................................................................................41参考文献.....................................................................................................................42附件清单.........................................................................................错误未定义书签。摘要本设计是在搜集大量台式车床车头箱孔系加工工艺资料的基础上,根据被加工箱体孔系的结构特点、尺寸精度、表面粗糙度和技术要求、定位夹紧方式、工艺方法和加工过程中所采用的刀具和辅具、切削用量情况以及生产率要求等,按照工序集中的原则而设计出来的一种高效率的台式车床车头箱孔系加工分配箱机构。设计传动系统时,尽可能地减少了主轴、传动轴和传动齿轮的数量设计各分主轴盐城工学院机械工程系毕业设计说明书3转速时,只考虑能与工件被加工孔径相匹配,而由车床车头箱变速来使个分主轴得到比较合理的切削速度设计分配箱轴承支墙跨度时,由于采用浮动联接镗杆,加工精度由镗模保证,跨度只需满足变速齿轮安装的必要空间。经实例计算证明,该机构具有体积小、重量轻、结构简单、使用方便、效率高、质量好的特点。关键词分配箱台式车床车头箱工序集中AbstractDesigningandcollecttingalargenumberofdesktoplathelocomotivecaseholedepartmentprocessingtechnologyfoundationofmaterialsoriginally,accordingtoprocessingthestructurecharacteristicoftheholedepartmentofbodyofcase,sizeprecision,theroughnessofsurfaceandspecificationrequirement,makeareservationandclampway,craftmethodandcutterandcomplementandhave,cutquantitysituationandproductivitynottorequireetc.thatadoptinthecourseofprocessing,Designaccordingtoprinciplethatprocessconcentrateononethatcomeoutdesktoplathelocomotivecaseholedepartmentofhighefficiencyprocessesandassignsthe台式车床车头箱孔系加工分配箱机构设计4organizationofthecase.Whiledesigningthetransmission,havereducedthequantityofmainshaft,driveshaftandtransmissiongearwheeltothebestofonesabilityDesigneverymainshaftontherotationalspeed,considerandcanprocesswithworkpieceaperturematchonly,andischangedspeedtomakemainshaftsgetthemorerationalspeedofcuttingbythelocomotivecaseofthelatheDesignandassigncasebearingpropupwallwhenthespan,becauseadoptandfloattolinkandborethepole,machiningaccuracyboremouldguaranteespanneedandsatisfyandchangespeedessentialspacethatthegearwheelisinstalledonly.Calculateandprovebyinstanceorganizationthishavecharacteristiconsmall,light,thestructureissimple,easytouse,efficiencyishigh,highinquality.KeywordThedistributedcaseDesktoplathelocomotivecaseThecentralizedprocess0引言车床、铣床、镗床等机床是各类机械制造厂用的最多的设备,学生比较熟悉,在结构上兼有一般机械的特点。而对于箱体类零件,其加工一般都需经平面加工,以及镗、扩、铰、钻及攻螺纹等工序。在中小企业,孔系加工是工厂新产品开发中的薄弱环节。鉴于以上原因,许多学校机械制造类专业都选择围绕机床方面进行布置设计课题,我的毕业设计课题就是涉及这个领域,具体的说是关于台式车床车头箱孔系加工分配箱机构设计。我的这次毕业设计是在学完基础课及有关的专业课的基础上,结合机床主传动部件设计进行的综合训练,其目的包括1.掌握机床主传动部件(分配箱)设计过程和方法,包括参数拟定、传动设计、零件计算、结构设计等,培养自己结构分析和设计的能力。2.综合运用过去所学的理论知识,提高自己联系实际和综合分析的能力。3.训练和提高自己设计的基本技能。如计算、制图,学习运用标准、手册,图册和查阅有关技术资料,编写技术文件(说明书等)。为了保质保量的按期完成设计,我在认真阅读设计任务书,到工厂参观以及

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