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1、4L22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
2、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.Itmainlyfocusedonthedesignistheoutwarda
3、ppearancechartandthejig.Accordingtothedieselengineofthefuselage’sstructure,shape,size,thedesignoftheoutwardappearancechart,selectedtheinterchangeablecomponents,whichincludesthemechanicalsliplableandthemillingcutterunit,designthespecial-purposejigandthebasicpartsofcolum,sidefoundationtoformavertica
4、lcompletemillingmachinetool.Inthedesignofthejig,itusedthreebasicplanecombinationslocalization.Simultaneously,inordertoreducesworker’slaborintensityandnon-cuttingtime,usinghydraulicpressuretoclamp.Withhydraulicpressurewedgeclampinstallmenttocompletetheworkpiececlamping.Thisdesignproposalhasmanyadva
5、ntages,suchas,thecycleofthedesignandmanufactureisshort,thecostofthemanufactureislow,highXXproductivity,stableprocessingaccuracy,andtheinterchangeablecomponentsstillcanreusetoformanewcompletemillingmachinetool,whentheproductisrenewal.Beinganalysedandprecisoncomputed,thismillingmachinetoolcanmeetthe
6、productefficiency,processingaccuracyandsuperficialdemand.Keywords:Millingcutterunit;Mechanicalsliplable;Blockmillingmachinetool;Jig目录摘要…………………………………………………………………………………………ⅠAbstract……………………………………………………………………………………...Ⅱ第一章绪论…………………………………………………………………………………11.1选题的背景、目的和意义………………………………………………………………………11.2国内
7、外研究现状分析……………………………………………………………………………1第二章方案选择与论证……………………………………………………………………32.1确定方案……………………………………………………………………………………………32.2方案分析和选择……………………………………………………………………………………3第三章4L22柴油机机体顶面精铣床外观图设计…………………………………………43.1选取铣刀………………