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DZZ-10多轴钻床的设计论文[带图纸].doc

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DZZ-10多轴钻床的设计论文[带图纸].doc

本科毕业设计论文题目DZZ10多轴钻床的设计系别机电信息系专业机械设计制造及其自动化班级学生学号指导教师2013年05月IDZZ10多轴钻床的设计摘要随着我国社会经济的飞速发展,整个制造业的加工生产水平也在不断的提高。为了适应汽车行业的快速发展,需要越来越多的特殊加工设备来完成单一的、精度要求较高的工序,而多轴钻床就是一种专为进行汽车轮辐扩钻孔加工而设计的一种高精度机床。DZZ10多轴钻床专为汽车轮辐十个螺纹孔的扩钻孔加工工序而设计,它包括机床本体支承件、动力部分、传动部分、液压传动部分等几大部分,在设计之前,首先应对机床的整体布局设计提出一个方案,再根据所加工工件的要求确定机床所需的功率,然后进行电动机的选取,依据传动比依次选择减速器、联轴器并进行各参数的计算,由计算所得参数设计各轴和齿轮的结构并进行强度的校核,同时还应对机床的工作台、底座、床身和立柱进行设计,最后选择传动进给系统的液压缸,绘制整台机床的装配、零件等图纸。本文主要对机床的一般设计方法和各部件的选用计算进行介绍。关键词多轴钻床汽车轮辐扩钻孔加工IIDesignofDZZ10multiaxisdrillingmachineAbstractWiththerapiddevelopmentofChinassocialeconomy,themanufacturinglevelofproductionhasbeenimproved.Inordertoadapttotherapiddevelopmentofautomobileindustry,specialprocessingequipmentmoreandmorenecessarytocompleteahighersingle,accuracyrequirementsoftheprocess,whilethemachineisakindofspecialforautomobilewheelexpandingdrillinganddesignofahighprecisionmachinetool.ThedesignofDZZ10machineforautomobilespoketenthreadedholeexpandingdrillingprocess,whichcomprisesamachinetoolbodysupport,powerpart,transmissionpart,ahydraulictransmissionpartofseveralmajor,inthedesign,firstproposedaschemeofoveralllayoutdesignofthemachinetools,andthendeterminethemachinepowerrequiredaccordingtotheworkpiecerequirements,thentheselectionofmotor,basedonthecalculationoftransmissionratioinordertochoosethereducer,couplingandparameters,thecalculatedparameterscheckedbydesignoftheshaftandgearstructureandstrength,butalsotothemachinetable,abase,thebedandcolumndesign,thefinalchoiceofhydrauliccylinderdrivefeedsystem,drawingtheassembly,partsandthewholemachinedrawings.Themaindesignmethodofmachineandthecalculationofthecomponentsareintroduced.KeyWordsmultiplespindledrillautomobilespokeexpandingdrillingIII目录1绪论.........................................................................................................................11.1研究背景及意义..............................................................................................11.2工艺方案的分析...............................................................................................11.3论文的组织架构..............................................................................................12总体设计.................................................................................................................32.1原始条件的分析...............................................................................................32.2选择工艺基准...................................................................................................32.3制定工艺路线...................................................................................................42.3.1工艺过程................................................................................................42.3.2绘制工序图............................................................................................42.4刀具的选择......................................................................................................52.4.1刀具选择应遵循的原则.........................................................................52.5切削用量的计算...............................................................................................52.5.1切削速度的计算.....................................................................................52.5.2吃刀深度的计算.....................................................................................52.6对机床性能的要求..........................................................................................62.6.1机床的加工范围.....................................................................................62.6.2对加工精度和粗糙度的要求.................................................................62.6.3经济效益.................................................................................................72.6.4人机关系.................................................................................................73多轴钻床整体布局设计.........................................................................................83.1整体布局设计要求...........................................................................................83.2机床整体布局方案的选择...............................................................................83.2.1方案的提出.............................................................................................83.2.2方案的比较...........................................................................................103.3机床支承件的设计.........................................................................................103.3.1机床支承件的功能...............................................................................103.3.2支承件的分类.......................................................................................103.3.3支承件的变形.......................................................................................113.4立柱的设计.....................................................................................................113.4.1导轨的设计...........................................................................................123.5机床底座的设计.............................................................................................14IV3.5.1材料的选取...........................................................................................143.5.2底座结构设计.......................................................................................143.5.3底座的尺寸...........................................................................................154传动部分的设计计算...........................................................................................164.1主轴箱与传动系统设计计算.........................................................................164.2齿轮齿数的确定.............................................................................................194.3齿轮的校核及几何尺寸计算.........................................................................214.3.1按弯曲疲劳强度进行校核...................................................................214.3.2按接触疲劳强度校核...........................................................................234.3.3大小齿轮几何尺寸...............................................................................244.3.4齿轮的结构设计...................................................................................254.4轴的设计.........................................................................................................254.4.1大齿轮轴的设计计算...........................................................................254.4.2小齿轮轴的设计计算...........................................................................304.5轴承的选择与计算.........................................................................................334.5.1大齿轮轴轴承的校核...........................................................................334.5.2小齿轮轴轴承的校核...........................................................................344.6键连接的选择和校核.....................................................................................364.6.1联轴器与大齿轮轴的键连接...............................................................364.6.2大齿轮与大齿轮轴的连接...................................................................364.6.3小齿轮与小齿轮轴的连接...................................................................375液压传动部分设计............................................................................385.1液压传动系统的设计要求.............................................................................385.2工况分析与液压系统主参数的确定.............................................................385.2.1负载分析...............................................................................................385.2.2各参数的计算.......................................................................................385.2.3工况负载分布表...................................................................................405.2.4负载在各工况阶段分布图...................................................................405.3液压缸的设计计算.........................................................................................415.3.1液压缸参数计算...................................................................................415.3.2快进、工进、快退时液压缸各参数计算...........................................415.4液压系统的设计.............................................................................................425.4.1液压回路的选择...................................................................................425.4.2液压系统原理图...................................................................................43

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