S195机体机械加工工艺及精镗三面孔工序夹具设计

S195机体机械加工工艺及精镗三面孔工序夹具设计摘要现代制造工艺是先进制造技术的重要组成部分，也是其最有活力的部分。一件产品从设计变为现实必须通过生产加工才能完成，故而工艺是设计、制造的桥梁，设计的可行性一般会受到工艺水平的制约。同时，在机械加工过程中，夹具占有非常重要的地位，它可靠地保证了工件的加工精度，提高了加工效率，减轻了劳动的强度。本课题通过分析S195机体零件，运用机械制造技术及相关课程的知识，解决S195在加工中的定位、夹紧以及工艺路线的安排等方面的相关问题，确定相关的工艺尺寸及选择合适的机床和刀具，保证零件的加工质量。其次，依据其毛坯件和生产纲领的要求及各加工方案的比较，制定出切实可行的加工工艺规程路线。最后，根据被加工零件的加工要求，参考机床夹具设计手册及相关方面的书籍，运用夹具设计的基本原理和方法，拟定夹具设计的方案，设计出高效、省力、经济合理并且能保证加工质量的夹具，以满足实际生产的需要。关键词:S195机体；机械加工工艺规程；精镗夹具TheDesignofProcessPlanandFixtureforFinishingBoringofTheThreeDimensionalforS195DieselEngineFrameAbstractModernmanufacturingprocessisnotonlyanimportantpartofadvancedmanufacturingtechnology,butalsoitsmostdynamicpart.Aproductfromdesigntorealitymustbecompletedthroughtheproductionprocess,andthereforetheprocessisdesigned,manufacturedbridge,thegeneralfeasibilityofthedesignwillbetheleveloftechnologyconstraints.Meanwhile,inthemachiningprocess,thefixtureoccupiesaveryimportantposition,itisreliablyensurethemachiningaccuracyoftheworkpiece,improveprocessingefficiency,reducetheintensityoflabor.ThisdesignbyanalyzingS195bodyparts,machinerymanufacturingtechnologyandtheuseofknowledge-relatedcourses,solvingS195positionedintheprocessingofrelatedproblemsintensifyandarrangingprocessrouteandotheraspectsrelatedtotheprocessofdeterminingthesizeandselecttheappropriatetoolsandtoolensurepartquality.Secondly,basedontheirrelativelyroughpiecesandproductionrequirementsofvariousprocessingprogramprogram,todeveloppracticalprocessplanningroutes.Finally,accordingtotheprocessingrequirementsofpartstobemachined,fixturedesignmanualsandreferencebooksrelatedto,theuseofthebasicprinciplesandmethodsoffixturedesign,fixturedesignprogramdevelopedtodesignefficient,labor-saving,economicalandcanguaranteethequalityoftheprocessingfixtures,tomeettheneedsofactualproduction.Keywords:S195dieselengineparts；Machiningprocessplanning；Fineboringfixture目录目录......................................................................................................................................................III表格清单......................................................................................................................................................IV绪论....................................................................................................................................................-1-引言....................................................................................................................................................-3-第1章零件的工艺分析................................................................................................................-4-1.1零件的作用..................................................................................................................................-4-1.2零件的工艺分析...........................................................................................................................-4-1.2.1前后表面：.......................................................................................................................-4-1.2.2上下表面：........................................................................................................................-4-1.2.3左右表面：........................................................................................................................-5-1.2.4内表面：............................................................................................................................-5-第2章工艺规程的制定........................................................................................................................-6-2.1毛坯的制造..........................................................................................................................................-6-2.2基准的选择..................................................................................................................................-6-2.3确定工艺路线...............................................................................................................................-6-2.3.1工艺方案的拟定................................................................................................................-6-2.3.2工艺方案的比较与选择....................................................................................................-7-2.4机械加工余量、工序尺寸及毛坯尺寸的确定...........................................................................-8-2.5确定切削用量及基本工时.........................................................................................................-10-2.5.1粗铣各表面工序的切削用量及基本工时......................................................................-10-2.5.2精铣各表面工序的切削用量及基本工时.............................................错误!未定义书签。2.5.3镗表面工序加工.....................................................................................错误!未定义书签。2.5.4钻削螺纹底孔.................................................................................................................-17-2.5.5攻丝.................................................................................................................................-21-第3章精镗三面孔夹具设计.............