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ID:12704159
大小:1.34 MB
页数:41页
时间:2018-07-18
《立式加工中心床身结构设计(全套图纸)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、优秀机械毕业设计CAD图纸通过答辩QQ194535455摘要床身是立式加工中心非常重要的基础支撑件,它起到了支撑立柱、滑座、工作台等重要零部件的作用,主要承受机床的静载荷以及在加工时产生的切削负载。床身的静动态性能直接影响机床的加工精度和稳定性,因此,床身结构的优化对于立式加工中心的发展具有十分重要的意义,本课题即结合沈阳机床厂VMC850B立式加工中心的性能特点与相关参数,对立式加工中心床身结构进行了科学系统的设计,具体内容如下:(1)借鉴于同类型的床身结构,根据VMC850B的整机结构设计了床身上表面布局,通过查阅《实用机床设计手
2、册》《机械设计手册》等参考书,科学的设计了床身的截面形状,包括壁厚的选定以及加强肋、方孔、圆孔的合理布置。同时对床身进行了受力分析并利用ANSYS软件对床身模型采取了静态力有限元分析。(2)针对与床身相关的重要零部件,包括Y方向伺服进给系统的驱动电机、滚珠丝杠、直线导轨、轴承、联轴器,进行了分析与计算,并最终确立了型号与参数。(3)提出了床身的精度要求,包含加工和装配过程中的几何精度。关键词:立式加工中心;床身;结构设计;选型计算;有限元分析;精度设计35优秀机械毕业设计CAD图纸通过答辩QQ194535455AbstractTheb
3、edisaveryimportantbasisforsupportingpartsintheverticalmachiningcenter,itplaysarolethatsupportingthecolumn,theslide,theworkbenchandsomeotherimportantparts.Thebedmainlywithstandsthestaticloadofthemachinetoolandthecuttingloadintheprocessing.Thestaticanddynamicperformanceof
4、thebeddirectlyaffectsthemachiningaccuracyandstability.Therefore,theoptimizationofthebedstructurehasgreatsignificanceforthedevelopmentoftheverticalmachiningcenters.Thesubject,whichiscombinedwiththeperformancecharacteristicsandparametersoftheverticalmachiningcenter850Boft
5、heShenyangMachineToolFactory,havedesignedthebedstructureoftheverticalmachiningcenterscientificallyandsystematically,thedetailsareasfollows:(1)LearntfromthebedstructureofthesametypeanddesignedthelayoutofthebedtopsurfaceunderVMC850B’swholestructure,throughaccessingto6、ticalMachineDesignManual>andandotherreferencebooks,scientificallydesignedthecross-sectionalshapeofthebed,includingtheselectionofthewallthicknessaswellasthereasonablelayoutofthereinforcingrib,thesquareandcircleholes.Thesubjectalsodidthestressanaly7、sisforthebedandusedthesoftwarecalledANSYStodothefiniteelementanalysisofthestaticforceforthemodelofthebed.(2)Fortheimportantpartsofthebed,includingtheY-directionservofeeddrivemotor,ballscrews,linearguides,bearingsandcouplings,didtheanalysisandthecalculation,andeventually8、establishedthemodelsandtheparameters.(3)Putforwardtheaccuracyrequirementsofthebed,includingthegeometricprecisi
6、ticalMachineDesignManual>andandotherreferencebooks,scientificallydesignedthecross-sectionalshapeofthebed,includingtheselectionofthewallthicknessaswellasthereasonablelayoutofthereinforcingrib,thesquareandcircleholes.Thesubjectalsodidthestressanaly
7、sisforthebedandusedthesoftwarecalledANSYStodothefiniteelementanalysisofthestaticforceforthemodelofthebed.(2)Fortheimportantpartsofthebed,includingtheY-directionservofeeddrivemotor,ballscrews,linearguides,bearingsandcouplings,didtheanalysisandthecalculation,andeventually
8、establishedthemodelsandtheparameters.(3)Putforwardtheaccuracyrequirementsofthebed,includingthegeometricprecisi
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