机械制造工艺学课程设计说明书

机械制造工艺学课程设计(论文)题目:车床离合齿轮零件的机械加工工艺规程及工艺装备设计学生姓名朱传年专业机械设计制造及其自动化学号2220063220220011班级2006级1班指导教师何辉波成绩工程技术学院2009年12月29日西南大学工程技术学院课程设计1目录中文摘要····································································································2英文摘要····································································································21前言········································································································32工艺规程设计···························································································32.1零件分析·························································································32.1.1类型及功用··············································································32.1.2结构分析·················································································42.2零件的毛坯······················································································42.3定位基准的选择················································································42.3.1粗基准的选择···········································································42.3.2精基准的选择···········································································42.4零件加工工艺路线的拟定····································································52.5工序设计·························································································52.5.1工序尺寸的计算········································································52.5.2切削用量的计算········································································63专用夹具的设计·······················································································143.1定位方案的选择···············································································143.2夹紧方案的选择···············································································143.3夹紧力方向、作用点的选择及确定·······················································144收获及心得体会·······················································································14致谢·········································································································15参考文献···································································································15西南大学工程技术学院课程设计2车床离合齿轮零件的机械加工工艺规程及工艺装备设计朱传年西南大学工程技术学院，重庆400716摘要：本课程设计在已知生产纲领的条件下，通过机械加工工序尺寸的计算和加工切削用量的计算，从而确定加工工序过程和制定机械加工工序卡和加工工艺卡片，同时根据提供的数据和资料绘制零件图、毛坯图以及夹具装配图，最后用绘图软件绘制零件图，编写设计说明书。关键词：工艺规程设计、定位基准、切削用量、夹具ThelatheisdesignedbeawayfromthemachineryclosingthegearwheelpartprocessestechnologicalprocedureandhandicraftequipmentZhuchuannianCollegeofEngineeringandTechnology,SouthwestUniversity,Chongqing,China400716Abstract：Thereby,ascertainthecardprocessingworkingprocedureprocessandworkingoutmachineworkworkingprocedureandprocessaprocesschartundercurriculumdesignconditionproducingguidingprincipleinknownnumber,bythefactthatmachineworkworkingproceduredimensioncalculationandprocessingthecalculationcuttingdosages,drawpartpicture,blankpictureandclampassemblingpictureatthesametimeaccordingtothedataanddataproviding,usethesoftwaredrawingtodrawpartpicture,compileandcomposefinallytodesignspecificationsKeyWords：Technologicalproceduredesigns,thecriterionfixingposition,cutsdosages,theclamp西南大学工程技术学院课程设计31前言机械制造工艺学课程设计使我们学完了大学的全部基础课、技术基础课以及大部分专业课之后进行的.这是我们在进行毕业设计之前对所学各课程的一次深入的综合性的总复习,也是一次理论联系实际的训练,因此,它在我们四年的大学生活中占有重要的地位。机械制造技术基础课程设计是在我们学习完了机械制造技术、机械制造装备设计等课程的基础上，在进行了生产实习之后，进行的一个重要的实践性教学环节。其主要目的是让学生把所学的工艺理论和实践知识，在实际的的工艺、夹具设计中综合地加以运用，进而得到巩固、加深和发展，提高我们分析问题和解决生产实际问题的能力，为以后搞好毕业设计和从事相关的技术工作奠定扎实的基础。通过机械制造工艺课程设计，我们可以在以下几个方面得到锻炼：1.能熟地运用机械制造技术课程及其他相关课程中的基本理论，以及在生产实际中学习到的实践知识，正确地和解决一个零件在加工过程中的定位、夹紧以及工艺路线的合理拟定等问题，从而保证制造的质量、生产率和经济性。2.通过夹具设计，进一步了解我们自己的结构设计能力，能够根据被加工零件的加工要求，设计出高效、省力，既经济合理又能保证加工质量的夹具。3.进一步提高计算、制图能力，能比较熟练地查阅和使用各种技术资料，如有关的国家标准、手册、图册、规范等4.在设计过程中培养学生严谨的工作作风和独立的工作能力。就我个人而言，我希望能通过这次课程设计对自己未来将从事的工作进行一次适应性训练，从中锻炼自己分析问题、解决问题的能力，为今后参加祖国的建设打下一个良好的基础。由于能力所限，设计尚有许多不足之处，恳请各位老师给予批评指正。2工艺规程设计2.1零件分析2.1.1类型及功用本题目所用齿轮是车床主轴上的离合齿轮，该零件属于盘套类零件，是一个离合器西南大学工程技术学院课程设计4中的齿轮，主要用于实现齿轮传动时的离合变速功能，在其工作过程中经常承受冲击、交变载荷，加工面多并且较为复杂，尤其是齿轮的部分加工。2.1.2结构分析该离合齿轮是以花键孔与主轴相配合，并可以做轴向滑移，在其齿轮端面有两个宽38mm并与轮齿有相对位置要求的槽，在另一端还有五个爪槽。该零件主要的加工表面有：以82花键孔为主的圆柱内表面；以115外圆表面为主的圆柱外表面加工；分度圆125的齿轮的加工；其中以82花键孔为主的内表面包括：82内孔表面、96内孔表面、102内孔表面以及110内孔表面。以115外表面为主的外表面包括：115外圆面、123外圆面以及110外圆表面。2.2零件的毛坯零件材料为45钢。考虑到在车床运行中要经常进行正反向运动，零件在工作过程中则经常承载载荷及冲击性载荷，因此应选用锻件，以使金属纤维尽量不被切断，保证零件工作可靠。属于大批大量生产，而且零件的轮廓尺寸不大，故可以采用模锻成型。这从提高生产率、保证加工精度上也考虑，也是应该的。2.3定位基准的选择基准选择是工艺规程设计中的重要工作之一。基准选择的正确与合理，可以使加工质量得到保证，生产率得以提高。否则，加工工艺过程中会问题百出，更有甚者，还会造成零件大量报废，使生产无法正常进行。2.3.1粗基准的选择在盘套类零件的加工中，应该以内孔的中心线做为基准，现选取82的花键内孔中心线做为粗基准。2.3.2精基准的选择在精基准的选择过程中要考虑多方面的问题，主要是基准的重合问题。当设计基准与工序基准不能重合时，应进行换算，另外以后也要专门计算，现不做详述。西南大学工程技术学院课程设计52.4零件加工工艺路线的拟定最后的工艺路线确定如下：工序1：粗镗82、102、96、110的内孔工序2：半精镗110内孔工序3：粗车115、128、110、137外圆工序4：半精车110两端面工序5：粗车两个大端面工序6：滚齿工序7：铣宽38mm的槽工序8：齿部倒角工序9：铣五爪槽工序10：五爪槽热处理工序11：校正花键孔工序12：剃齿工序13：轮齿热处理工序14：校正花键孔工序15：冷挤齿工序16：终检以上工艺过程详见“机械加工工艺过程综合卡片”。2.5工序设计车床离合齿轮零件材料为45钢，硬度为：207~241HBS,生产类型为大批大量成批生产，采用锻锤上合模模锻毛坯，公差等级CT:8~10，取为10级。机械造型加工余量等级为E~G级，取F级。2.5.1工序尺寸的计算现采