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丝杠车床改光杠键槽铣专机进给系统设计说明书.doc

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丝杠车床改光杠键槽铣专机进给系统设计说明书.doc

盐城工学院毕业设计说明书10引言...................................................................................................................................41进给系统总体设计方案.................................................................................................61.1机床外形结构见图1............................................................................................................................................61.2主要技术参数原始数据..................................................................................................................................71.3设计方案的比较......................................................................................................................................................71.4进给系统结构的运动简图...................................................................................................................................82电动机的选用.................................................................................................................102.1电动机选型...............................................................................................................................................................102.2其额定的功率选择...................................................................................................................................................102.3确定电动机的转速.................................................................................................................................................112.4电磁离合器的选用.................................................................................................................................................113箱体结构的设计...........................................................................................................133.1加工工艺....................................................................................................................................................................133.2箱体尺寸确定(见下图)....................................................................................................................................134齿轮的设计计算...........................................................................................................144.1设计原则...................................................................................................................................................................144.2基本参数得计算.................................................................................................................................................144.2.1齿轮设计计算程序(用VB编的简单的程序实现齿轮的基本参数的电算化).......................144.2.2源程序代码程序清单代码为....................................................................................................................154.3齿轮的传动设计.................................................................................................................................................184.3.1设计的原则......................................................................................................................................................184.3.2许用应力的计算1.........................................................................................................................................194.4齿轮的精度设计.................................................................................................................................................214.4.1选择的原则....................................................................................................................................................214.4.2误差检验组的选择及其公差值得确定...................................................................................................21丝杠车床改光杠键槽铣专机进给系统设计24.4.3计算齿轮副侧隙和确定齿厚极限偏差代号..........................................................................................214.4.4确定齿胚公差及表面粗糙度....................................................................................................................234.4.5公法线平均长度极限偏差的换算............................................................................................................245轴与花键轴的设计.....................................................................................................255.1轴的最小直径得计算.............................................................................................................................................255.2轴的结构分析及轴上零件的固定.......................................................................................................................255.3轴(花键轴)的结构分析及其上零件的固定安装........................................................................................275.4轴的强度校核..........................................................................................................................................................285.5轴的刚度校核..........................................................................................................................................................346轴承的设计和润滑.......................................................................................................377结论...............................................................................................................................38致谢.....................................................................................................................................39参考文献............................................................................................................................................................................40附件清单............................................................................................................................................................................41摘要针对在一般的企业生产实践中经常会遇到对已有的机床进行更专业化改造的问题,进而达到节约成本,提高产品质量的目的。此文系统的阐述了利用原有丝杠车床、床身、床鞍,丝杠进行改光杠键槽铣专机。此键槽铣专机是专为铣长键槽光杠类零件,并可铣各种宽度的键槽。其设计方案主要从总体方案设计、各主要部件技术参数的确定,及其空间的合理布置、传动方案的比较选择、各种典型零件的设计计算、校核、电动机选型等。进给系统作为机床的主要功能系统,对之有较高的运动速度,精度要求。此进给系统主要实现工进与快退的两大基本功能,速盐城工学院毕业设计说明书3度的切换采用电控式、从而避免了停止时铣刀对已加工的表面擦伤。电机仍选用旋转式电机,电机带有电磁制动器。这项机床的改造的具体措施始终遵循着实用性和经济性的原则,进行工厂的内部改造,完全具有可操作性和可行性。关键词机床改造进给系统光杠键槽铣专机电磁制器AbstractTooftencanmeetandgoonspecializedproblemoftransformationtoexistinglatheamonggeneralenterpriseproductionpractices,thenreachandeconomizethecost,thepurposetoraiseproductquality.Gentleexpositionofsystemthisutilizeoriginalleadingscrewlathe,lathebed,bedsaddle,Guidescrewgoonchangesmooththickstickkeywaymillthespecialplane.Keywaythismillspecialplanetoformilllongkeywaymerethickstickpart,canmillofdifferentwidthskeywayspecially.Planofdesignitsmainlyfromconceptualdesign,everymainpartsurenessoftechnicalparameter,Andspaceassignrationally,transmissioncomparativechoice,variouskindsoftypicaldesigncalculate,check,motorselectingtype,etc.ofpartofscheme.systemasmainfunctionsystemoflathe,丝杠车床改光杠键槽铣专机进给系统设计4havehighersportspeedtotheir,Theprecisionisrequired.Thisenterandgivesystemrealizeworkerstockwithtwomajorbasicfunctionsthatretreatsoonmainly,Toswitchoverandadoptgettingautomaticallycontrolled,thusavoidbetweenmillingcutterandsurfacescotchthathasprocessalreadywhenstoppingspeed.Theelectricalmachinerystillselectstherotatingtypeelectricalmachineryforuse,theelectricalmachineryhaselectromagneticbrakes.Thislathetransformationconcretemeasureisreallyfollowedtheusingandeconomicprincipleallthetime,Carryontheinsidetransformationofthefactory,totallyhaveeffectivenessandfeasibility,Investandproduceandoperateandexamineandhaveobviousresultandeconomicbenefitsactuallythroughit.KeywordThelathetransformingEntertothesystemThemerethickstickkeywaymillsthespecialplaneElectromagneticbrake0引言制造业作为我国的支柱产业,在整个国民经济中占有举足轻重的地位,2000年制造产业占全国GDP36,它是我国比较优势产业,是劳动密集及智力密集型产业。而制造业的主体和基础是机床行业2002年中国机床消费55亿美元,机床的进口已超过31亿美元,一跃成为世界最大的消费国和全球最大的机床进口国。同时加入WTO以后,全球经济贸易的一体化,这对我国制造业的要求不断提高,各种技术壁垒已经阻碍了我国机床行业走向国际化。如何刷新今天的被动局面,积极的应对挑战、抓住机遇、赢得发展的契机,成为机床行业普遍面临的问题。在国外,机床改造已有较长的历史,美国旧机床买卖组织MDMAMachineDealersNationalAssociation成立已有50年。由于各国的政治、经济、科学技术的差异,机床的种类、性能、结构的繁杂多样,使机床的改造内涵更加丰富多彩,出现了机床的翻修、改进、改装、改造、再生、再造。机床改造在汽车、机床、内燃机、航空等行业广泛应用,并批量投入生

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