传动箱箱盖加工工艺和铣前后端面夹具设计.doc

PAGE\*MERGEFORMATIIPAGE\*MERGEFORMATIIIPAGE\*MERGEFORMATI附件1教学单位学生学号编号本科毕业论文（设计）题目传动箱箱盖加工工艺和夹具设计学生姓名专业名称指导教师年月日摘要本文是在传动箱箱盖的图样分析后进行传动箱箱盖的机械加工工艺路线的设计，同时按照其中的加工工序的要求设计夹具。传动箱箱盖的主要加工内容是表面和孔。其加工路线长，加工时间多，加工成本高，零件的加工精度要求也高。按照机械加工工艺要求，遵循先面后孔的原则，并将孔与平面的加工明确划分成粗加工和精加工阶段以保证加工精度。基准选择以底面作为粗基准，以底面与两个工艺孔作为精基准，确定了其加工的工艺路线和加工中所需要的各种工艺参数。在零件的夹具设计中，主要是根据零件加工工序要求，分析应限的自由度数，进而根据零件的表面特征选定定位元件，再分析所选定位元件能否限定应限自由度。确定了定位元件后还需要选择夹紧元件，最后就是确定专用夹具的结构形式。关键词:传动箱箱盖；加工工艺；工序；专用夹具PAGE\*MERGEFORMATIIPAGE\*MERGEFORMATIIIAbstractThisisthecaseintheheadstockpatternanalysiscabinetaftermachiningprocessroutedesign,whilemanufacturingprocessesinaccordancewithoneoftherequirementsofthedesignfixture.Themainspindleboxcasingsurfaceandholemachiningcontent.Processingroute,processingtime,higherprocessingcosts,machiningaccuracyrequirementsarealsohigher.Inaccordancewiththemachiningprocessrequirements,andfollowtheprinciplesofthefirstsurfaceafterhole,andtheholewithaflat-screenprocessingisclearlydividedintoroughingandfinishingstagestoensureaccuracy.Referenceselectiontothebottomasacrudebenchmark,thebottomtwotechnicalholeasafinebasis,determinetherouteofitsprocessingtechnologyandprocessingneedsofthevariousprocessparameters.Inthepartsfixturedesign,partsprocessingoperationsrequirements,analysisshouldbelimitedtothenumberofdegreesoffreedom,andthenselectedaccordingtothepartsofthesurfacecharacteristicsofthepositioningelement,andthenanalysiswhethertheselectedpositioningelementshouldbelimiteddegreesoffreedom.Positioningelementalsoneedtochoosetheclampingelement,thefinalstepistodeterminethestructureofthespecialfixture.Keywords:Headstock;processing;process;specialfixtures目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc418197617"摘要PAGEREF_Toc418197617\hIIHYPERLINK\l"_Toc418197618"AbstractPAGEREF_Toc418197618\hIIIHYPERLINK\l"_Toc418197619"目录PAGEREF_Toc418197619\h1HYPERLINK\l"_Toc418197620"1绪论PAGEREF_Toc418197620\h1HYPERLINK\l"_Toc418197621"1.1本课题的研究内容和意义PAGEREF_Toc418197621\h1HYPERLINK\l"