PAGEXIII4L22柴油机机体顶面精铣床设计摘要本文主要介绍了4L22柴油机机体顶面精铣床的设计。研究的主要问题是4L22柴油机机体顶面精铣床外观图设计和夹具设计。根据4L22柴油机机体的结构、形状和尺寸特点，4L22柴油机机体顶面精铣床外观图设计选用了通用部件：铣削头、机械滑台等，配以专用的夹具和立柱、侧底座等基础部件，采用立式布局形式组成一组合铣床；夹具的设计，采用三基面组合定位，采用机动夹紧方式，使用液压斜楔夹紧装置完成工件夹紧。该设计方案具有设计制造周期短，生产率高，加工质量稳定，工人劳动强度低，产品更新时，组合铣床上的通用部件仍可重新利用组成新的组合机床等优点。经过分析和精度验算表明该设计方案能够满足4L22柴油机机体生产纲领要求，能够保证4L22柴油机机体顶面的加工精度和表面质量要求。关键词：铣削头；机械滑台；组合铣床；夹具DesignFineMillingMachineTooltoMillthe4L22DieselEngineFuselageAbstractThisarticlemainlyintroducedthedesignaboutthefinemillingmachinetool,whichwasusedtomillthetopofthe4L22dieselenginefuselage.Itmainlyfocusedonthedesignistheoutwardappearancechartandthejig.Accordingtothedieselengineofthefuselage’sstructure,shape,size,thedesignoftheoutwardappearancechart,selectedtheinterchangeablecomponents,whichincludesthemechanicalsliplableandthemillingcutterunit,designthespecial-purposejigandthebasicpartsofcolum,sidefoundationtoformaverticalcompletemillingmachinetool.Inthedesignofthejig,itusedthreebasicplanecombinationslocalization.Simultaneously,inordertoreducesworker’slaborintensityandnon-cuttingtime,usinghydraulicpressuretoclamp.Withhydraulicpressurewedgeclampinstallmenttocompletetheworkpiececlamping.Thisdesignproposalhasmanyadvantages,suchas,thecycleofthedesignandmanufactureisshort,thecostofthemanufactureislow,highproductivity,stableprocessingaccuracy,andtheinterchangeablecomponentsstillcanreusetoformanewcompletemillingmachinetool,whentheproductisrenewal.Beinganalysedandprecisoncomputed,thismillingmachinetoolcanmeettheproductefficiency,processingaccuracyandsuperficialdemand.Keywords：Millingcutterunit;Mechanicalsliplable;Blockmillingmachinetool;Jig目录摘要…………………………………………………………………………………………ⅠAbstract……………………………………………………………………………………...ⅡTOC\o"1-3"\h\z第一章绪论…………………………………………………………………………………11.1选题的背景、目的和意义………………………………………………………………………1HYPERLINK\l"_Toc138377998"1.2国内外研究现状分析……………………………………………………………………………1HYPERLINK\l"_Toc138377999"第二章方案选择与论证……………………………………………………………………3