轴承套圈专用车床主轴箱设计毕业论文.doc

www.yanziedu.com轴承套圈专用车床主轴箱设计摘要作为主要的车削加工车床，轴承套圈专用车床是适合大批量生产，大功率，高效率的半自动化车床，它主要用于轴承套圈的车削加工，也可用于加工盘类、短轴类、套类等零件，在该机床上采用多把刀具同时加工零件，也可采用仿型刀架加工各种成型表面。本设计主要针对液压卡盘多刀仿型车床主传动系统进行设计。主传动系统的功用是支撑主轴和传动其旋转，并使其实现起动、停止、变速、变向等。主传动系统的传动机构包括定比机构和变速机构两部分，前者仅用于传递运动和动力，或进行升速、降速，采用齿轮传动副；后者用来使主轴变速，采用滑移齿轮变速机构，其结构简单紧凑，传动效率高。开停装置用于控制主轴的起动和停止。换向装置用于改变主轴的旋转方向。设计的内容主要有机床主要参数的确定，传动方案和传动系统图的拟定，对双向片式摩擦离合器进行设计，它是主轴的起动和停止以及换向装置，对离合器的主要零件摩擦片进行计算和验算，利用CAD绘图软件进行零件的设计和处理。关键词：车床，床头箱，换向，离合器。www.yanziedu.comHYDRAULICMULTI-CHUCKLATHEBEDPROFILINGTOOLBOXDESIGNABSTRACTAsthemainlatheworklathe,speciallathesbearingringsaresuitableformassproduction,highpower,highefficiencyofsemi-automaticlathe,whichismainlyusedforturningbearingrings，andcanalsobeusedforprocessingdisktype,brachyaxistype,asetofkindandsoonInaddition，itusesmanycutterssimultaneouslytoprocessesthecomponents，andmayalsouseduplicatingtoolresttoprocesseachkindofformedsurfaceThisdesignmainlyaimsatthehydraulicchuckmulti-knifeshapinglatheheadstockMaindrivensystemistopropupthefunctionofitsrotationofaxisandthedriveandmakeitstart,stop,speedchange,direction-convertingetc.Thedrivingmechanismofmaindrivensystemmainlyincludetwoparts,constantproportionmechanismandgearshiftmechanism.Theheformerisonlyusedforthetransmissionofmotionandpowerthroughgearpair,orhoistingspeed,settlingvelocity；Thelatterisusedtochangethevelocityofspindlethroughshiftmechanismofslippinggear,thestructureofwhichissimpleandcompact,withhightransmissionefficiencyTheshartingandbrakingdevicesareusedtocontrolthespindleofitsstartandstopThereversingdeviceisusedtoalterthedirectionofspindlerotationThemaincontentsofthemachinetoolcontainsettlesoftheparameter,toascerttheprojectoftransmissionanddrawingofdrivensystem，thedesignoffrictionclutchofdouble-disk,whichisthedeviceofstart,stopandcommutationforthespindle，calculationandcheckingforthemajorpartsandfrictionplate，utilizationofCADpaintingsoftwaretocarryonthedesignandprocessingofpartsKEYWORDS：lathe，headstock，direction-converting，clutchwww.yanziedu.com目录前言··················································································1§1.1车床的用途和运动························································3§1.2车床的分类·································································3第1章概述·······································································5§1.1轴承环卡盘多刀车床的用途···········································5§1.2机床的总体布置···························································5§1.3机床的主要参数···························································5第2章国内外卡盘多刀车床分析比较······································7§2.1国内外同类机床参数的分析比较····································7§2.2国内外同类机床结构及精度分析比较······························7§2.2.1结构特点·······························································7§2.2.2精度比较·······························································8第3章机床的运动设计··························································9§3.1极限转速的确定···························································9§3.2转速数列公比的确定··················································9§3.3主电机功率的确定······················································10§3.4主传动系统的拟定······················································11第4章主要零件的设计计算··················································14§4.1三角带的传动计算······················································14§4.2摩擦片离合器的设计···················································15§4.3传动轴设计································································16§4.3.1传动轴的直径估计·················································16§4.3.2轴弯曲刚度验算·················································17§4.3.3轴上花键侧挤压力验算········································21www.yanziedu.com§4.3.4轴上轴承寿命校核··············································21§4.4主轴的计算································································23§4.4.1主轴轴颈及合理跨距·············································23§4.4.2主轴弯曲刚度验算·················································23§4.5齿轮的计算································································27§4.5.1齿轮模数估算·······················································27§4.5.2齿轮模数验算·······················································27第5章主轴箱的结构设计·····················································33结论·················································································34参考文献··············································································35致谢·················································································36