柴油机连杆工艺工装设计

1摘要本文主要论述了柴油机连杆的加工工艺及其夹具设计。因为连杆是活塞式发动机和压缩机的主要零件之一，其大头孔与曲轴连接，小头孔通过活塞销与活塞连接，其作用是将活塞的气体压力传送给曲轴，又收曲轴驱动而带动活塞压缩汽缸中的气体。连杆承受的是冲击动载荷，因此要求连杆质量小，强度高。所以在安排工艺过程时，按照“先基准后一般”的加工原则。连杆的主要加工表面为大小头孔和两端面，较重要的加工表面为连杆体和盖的结合面及螺栓孔定位面。在夹具设计方面也要针对连杆结构特点比较小，设计应时应注意夹具体结构尺寸的大小等，最终就能达到零件的理想要求！关键词:连杆变形加工工艺夹具设计AbstractThedieselconnectingrodtreatinghandicraftthemainbodyofabookhasbeendiscussedmainlyandtheirgripdesign.Becauseoftheconnectingrodisoneofdyadicengineofpistonandmaincompressionenginepart,whoselargerendholeandcrankshaftlinkup,thesmallheadholelinksupbythewristpinandthepiston,whoseeffectisthatthepistongaspressureistransmittedtothecrankshaft,collectcrankshaftgasindrivingbutsettingapistoninmotiontocompressacylinder.Beingthatthepolebearspoundsaliveload,requestconnectingrodmassisminortherefore,theintensityishigh.Thereforewhenarrangingprocedurefor,accordingtofirstthecriterionqueen-liketreatingprinciple.Theconnectingrodmainpartprocessesasurfacebeingthatheadholeandbothendsbigorsmallareweak,moreimportantfayingfaceandboltholelocatingsurfacebeingtheconnectingrodbodyandcovertreatingoutside.Alsoshouldbecomparativelysmallspecificallyforconnectingrodstructurecharacteristicinthefieldofgripdesign,designthatthesizeshouldpayattentiontogrippingtheconcretestructuredimensionoftheseasonwaits,theidealbeingthereforelikelytoreachapartultimatelydemands!Keyword:ConnectingrodDeforminationProcessingtechnologyDesignofclampingdevice2绪论毕业实践工作对于每一位即将毕业的毕业生来说都是非常重要的，它对我们以后走上工作岗位很有帮助。对于我们机电专业来说，在以后的工作中经常要做关于夹具的设计工作，在这里，我以连杆零件为例，对它的工艺过程和夹具进行设计。做毕业设计可以把以前所学的知识加以综合运用，起到巩固学到的知识的作用，从而提高分析，解决问题的能力。因此，认真的完成毕业设计是很有必要的。毕业设计是我们完成本专业教学计划的最后一个极为重要的实践性教学环节，是使我们综合运用所学过的基本课程，基本知识与基本技能去解决专业范围内的工程技术问题而进行的一次基本训练。我们在完成毕业设计的同时，也培养了我们正确使用技术资料，国家标准，有关手册，图册等工具书，进行设计计算，数据处理，编写技术文件等方面的工作能力，也为我们以后的工作打下坚实的基础，所以我们要认真对待这次综合能力运用的机会！3目录摘要...................................................................................................................................1Abstract................................................................................................................................1绪论...................................................................................................................................2第一章柴油机连杆的加工工艺.........................................................................41.1柴油机连杆的用途及其特点......................................................................................41.2连杆的的材料及毛坯制造........................................................................................51.3连杆的加工工艺过程................................................................................................71.4连杆的加工工艺过程分析..........................................................................................81.4.1定位基准的选择...............................................................................................81.4.2加工阶段的划分和加工顺序的安排................................................................91.4.3确定合理的夹紧方法.......................................................................................91.4.4连杆主要面的加工方法.................................................................................101.4.5连杆主要孔的加工方法.................................................................................101.4.6连杆体与连杆盖的铣开工序..........................................................................111.5夹具使用.....................................................................................................................111.6确定各工序的加工余量、计算工序尺寸及公差.....................................................111.6.1确定加工余量.................................................................................................111.6.2确定工序尺寸及其公差..................................................................................121.7各项加工数据的计算................................................................................................131.8连杆的检验................................................................................................................201.8.1观察外表缺陷及目测表面粗糙度..................................................................201.8.2检查主要表面的尺寸精度..............................................................................201.8.3检验主要表面的位置精度...............................................................................211.8.4连杆螺钉孔与结合面垂直度的检验..............................................................21第二章工装设计.................................................................................................212.1铣削分面夹具设计....................................................................................................212.1.1夹具的问题注意..............................................................................................212.1.2夹具设计.........................................................................................................222.2扩大头孔夹具............................................................................................................242.2.1夹具的注意问题.............................................................................................242.2.2夹具设计............................................