资源描述:
《本科毕业论文-支架工艺规程及钻φ30孔的夹具设计》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、毕业设计说明书题目:支架工艺规程及钻Φ30孔的夹具设计学生:学号:专业:班级:指导老师:摘要本次设计内容涉及了机械制造工艺及机床夹具设计、金属切削机床、公差配合与测量等多方面的知识。支架加工工艺规程及其钻孔的夹具设计是包括零件加工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设计中要首先对零件进行分析,了解零件的工艺再设计出毛坯的结构,并选择好零件的加工基准,设计出零件的工艺路线;接着对零件各个工步的工序进行尺寸计算,关键是决定出各个工序的工艺装备及切削用量;然后进行专用夹具的设计,选择设计出夹具的各个组成部件,如定位元件、夹紧元件、引
2、导元件、夹具体与机床的连接部件以及其它部件;计算出夹具定位时产生的定位误差,分析夹具结构的合理性与不足之处,并在以后设计中注意改进。关键词:工艺、工序、切削用量、夹紧、定位、误差。ABSTRCTThisdesigncontenthasinvolvedthemachinemanufacturecraftandtheenginebedjigdesign,themetal-cuttingmachinetool,thecommondifferencecoordinationandthesurveyandsoonthevariousknowledge.
3、Thereductiongearboxbodycomponentstechnologicalprocessanditstheprocessing¢140holejigdesignisincludesthecomponentsprocessingthetechnologicaldesign,theworkingproceduredesignaswellastheunitclampdesignthreeparts.Mustfirstcarryontheanalysisinthetechnologicaldesigntothecomponents,
4、understoodthecomponentsthecraftredesignsthesemifinishedmaterialsthestructure,andchoosesthegoodcomponentstheprocessingdatum,designsthecomponentsthecraftroute;Afterthatiscarryingonthesizecomputationtoacomponentseachlaborstepofworkingprocedure,thekeyisdecideseachworkingprocedu
5、rethecraftequipmentandthecuttingspecifications;Thencarriesontheunitclampthedesign,thechoicedesignsthejigeachcompositionpart,likelocatesthepart,clampsthepart,guidesthepart,toclampconcreteandtheenginebedconnectionpartaswellasotherparts;Positionerrorwhichcalculatesthejiglocate
6、swhenproduces,analyzesthejigstructuretherationalityandthedeficiency,andwilldesigninlaterpaysattentiontotheimprovement.Keywords:Thecraft,theworkingprocedure,thecuttingspecifications,clamp,thelocalization,theerror目录序言…………………………………………………………………1一.零件分析……………………………………………………21.1零件作
7、用………………………………………………21.2零件的工艺分析…………………………………………2二.工艺规程设计…………………………………………………22.1确定毛坯的制造形式……………………………………22.2基面的选择传……………………………………………22.3制定工艺路线……………………………………………32.4机械加工余量、工序尺寸及毛坯尺寸的确定…………32.5确定切削用量及基本工时………………………………4三夹具设计……………………………………………………163.1问题的提出………………………………………………163.2定位基准的选
8、择…………………………………………163.3切削力及夹紧力计算……………………………………163.4定位误差分析……………………………………………173.5夹具设计