ZH1105柴油机齿轮室盖多孔钻组合机床总体及夹具设计

ZH1105柴油机齿轮室盖多孔钻组合机床总体及夹具设计摘要：组合机床是由大量通用部件和少量的专用部件组成的专用机床。为了提高柴油机齿轮室盖得生产效率，满足被加工零件的精度要求，本课题设计了一台用于加工ZH1105柴油机齿轮室盖多孔钻孔的组合机床。本组合机床可以同时加工ZH1105柴油机齿轮室盖左面上的6个M6的螺纹底孔、6个∅20的平面；右面上的6个∅10的光孔、1个M14的螺纹底孔、1个M8的螺纹底孔3个∅10的光孔；后面上的3个∅9的光孔、1个M12的螺纹底孔。本课题主要阐述组合机床的总体设计和夹具设计。在满足工艺要求的基础上，绘制了“三图一卡”，确定了该组合机床的整体布置方案。在夹具设计过程中，采用方便可靠的一面两销的定位，以工件的左面作为主定位面限制3个自由度，由一个圆柱定位销限制2个自由度，由一个削边定位销限制剩下的一个自由度，从而限制了被加工零件的6个自由度。该组合机床夹具选用安全方便的液压夹紧方式，设计了夹具的总体结构和主要零件，对夹具进行了误差分析，夹紧力的计算。该组合机床不仅保证了钻孔精度，还提高了加工效率，降低了工人的劳动强度，较好地完成了设计任务。关键词：组合机床；钻孔；夹具设计本设计来自：完美毕业设计网：8191040DesignofGeneralandFixtureofModularMachineToolforPorousDrillingofHousingCoverforGearofZH1105Abstract:Modularmachinetoolisaspecial–purposemachinetoolconsistedthatiswithalargenumberofgeneral-purposecomponentsandasmallnumberofspecial-purposecomponents.Inordertoimprovethehousingcoverforgearefficiencyandsatisfytheprecisionoftheprocessedparts,thesubjectaimsatdesigningamodularmachinetoolusedfordrillingholes,whichareonthreesideofhousingcoverforgearofZH1105.Themodularmachinetoolcanprocess6basicholesofM16screw,countersinksixdiaphragmswhichthediameteristwentyontheleftsideofhousingcoverforgearofZH1105;sixdiaphragmswhichthediameteristen,onebasicholesofM14screw,onebasicholesofM8screwandthreediaphragmwhichthediameteristenontherightside,andthreediaphragmswhichthediameterisnine,onebasicholesofM12screwontherightside.Thedesignmainlyillustratesthegeneraldesignofthemodularmachinetoolandthefixturedesign.Onthebasisofmeettingthetechnicalrequirements,thecompletionofthetechnologicaldrawingofthepartwhichneedtobemanufactured,thegeneraldrawingofmodularmachinetool，drawingofcutterdisplayandtheefficiencycardofmanufacture,anddeterminesthegenerallayoutprogramofthemodularmachinetool.Intheprocessofdesigningthefixture,usetheconvenientandreliablepositioningofthetwoholesonthesamesideareused,andthebottomoftheworkpieceispositionedasamajorsidewhichrestrictsthethreedegreesoffreedom,acylindricalpinrestrictstwodegreesofthefreedom,acuttingedgepinrestrictstheleftdegreesofthefreedomsothatitrestrictssixdegreesofthefreedomoftheworkpiece.Thefixtureofthemodularmachinetoolusesthesafeandconvenienthydraulicclamping,designsthegeneralstructureandmajorpartsoffixture,carriesontheerroranalysisandcalculationsofclampingforce.Themodularmachinetoolcannotonlyguaranteetheaccuracyofdrillingtheholes,butalsoenhancetheprocessingefficiencyandreducethelaborintensity.Keyword:Modularmachinetool;Drilltheholes;Designoffixture目录1引言............................................................................................................................41.1概述.........................................................................................................................41.2课题设计的总体思路.............................................................................................52组合机床总体设计....................................................................................................62.1总体方案论证.........................................................................................................62.1.1被加工零件的特点..............................................................................................62.1.2工艺路线的确立..................................................................................................62.1.3机床配置型式的选择..........................................................................................72.1.4定位基准的选择..................................................................................................82.1.5选用滑台传动型式..............................................................................................82.2确定切削用量及选择刀具.....................................................................................92.2.1选择切削用量......................................................................................................92.2.2计算切削力、切削扭矩及切削功率................................................................102.2.3选择刀具结构....................................................................................................112.3组合机床总体设计—三图一卡...........................................................................112.3.1被加工零件工序图............................................................................................112.3.2加工示意图........................................................................................................112.3.3机床联系尺寸图..................................................................错误!未定义书签。2.3.4机床生产率计算卡..............................................................错误!未定义书签。3夹具设计....................................................................................错误!未定义书签。3.1概述.........................................................................................错误!未定义书签。3.1.1机床夹具在机械加工中的作用..........................................错误!未定义书签。3.1.2机床夹具的分类..................................................................错误!未定义书签。3.1.3机床夹具的组成..................................................................错误!未定义书签。3.2夹具的设计步骤及内容..............................................