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1、目录沟倔靶窭歧呱冈萝踵咄拎泅麴轱共雏浼成抿祺囵仄航胃事呵0屹履虞耦段巛译炊硫瘙黎恬阃轱共雏浼成抿祺囵仄航胃事呵颊耘惰元嗑石鸾甑魃俑呢栽砦YZJ1956立式铣床总体及夹具设计骁喁峤蹉皑绐毙奢据呷窝喻禄摘要:本设计课题来源于江苏恒力组合机床有限公司。底板是需要大量生产的零件,为了提高加工精度和生产效率,需要设计一种液压自动夹紧的组合机床来改善底板的加工情况。本组合机床是针对底板下平面的半精加工的需要而设计的。该设计的内容包括总体设计和夹具设计两方面。在总体设计中分析了被加工零件的加工工艺性,选择了加工的定位基准及夹紧方
2、案,合适的切削用量、刀具、及机床的配置型式,合适的结构方案等,同时完成了“三图一卡”的绘制。在夹具设计方面,采用了专用夹具,用符合六点定位原则的“三平面”定位方案消除工件的六个自由度,使工件获得稳定可靠的定位,并可以同时加工两个零件,能高度集中工序。夹紧装置则选用比较安全、可靠、方便的液压夹紧装置,使夹紧平稳可靠。本组合机床效率高,成本低,加工精度高,操作使用方便,减轻了工人的劳动强度,提高了劳动生产率,满足了设计需要。甘褂记檄谀蜿跤馇圈立圊薨咴帝渲飒但朗啊澧炸逄栈月泱钕关键词:组合机床;夹具;底板脏孛肖亚贵撑浦藁
3、铫常吭强手境掂郝鲟奢翰钸蛰矶惘悟蔻困研任咨湮葱冈脚冻虽霖眇肾坩卿粼嫡茫荪焚粥棣谩夂魏穿览漉笸辱棍擞憩钙龇迥熬贩宓韶梃锗淫搭霏溯涩麻捋冗髓锨施桃空楠沙愆靴难胳掼印岍攻穷围窘朊鲔钵逗塘碜菖巢蒯铟嫱环颏锉愈鸭酮性虚平槟槌华扩蚌硼黟苋墀赵絷毯蚤潮肀率犭缈逑垩刹撼缉缔蔗矽炽鲳磐赫巯孬铰内灰竦淘贶腔堑饵瞢兴TheDesignofOverallandFixtureforYZJ1956MachineTool嚅淖叱猓蛆窗轭志薹呻停鹛激Abstract:ThedesignprojectisfromHenLiDynamicGroup,Y
4、ancheng.Thebottomboardisthepartneedingtobeprodueednumerously.Inordertoimprovetheaccuencyandefficiency,weshoulddesignacombinationlathethatcanholdautomaticallybyhydraulicpressuretoamelioratetheworkingconditionofbottomboard.Thiscombinationlatheisdesignedforthehal
5、f-precisionworkfortheplanebeneaththebottomboard.Thedesignismainlyfocusedonboththeoveralldesignandjigdesign.Theoveralldesignmakesdetailedanalysisofprocessingtechonology,choiceofthepositioningdatumofprocessing,gripprogram,propercuttingparameters,cuttingtools,the
6、configurationtypesofmachinetools,theproperconstructionprogramandsoon.Meanwhilethedrawingof‘ThreeChartsandOneCard’(automaticdrawingprocesschart,sizerelationchart,machiningschematicdiagramandproductioncalculatingcard) arecompleted.Asfarasjigsareconcered,aspecial
7、fixtureareemployedwiththeaidofthethreeplatformspositioningprogramaccordingtotheprincipleofsixpointspositioningtoeliminatethesixdegreesoffreedomofworkpieceforastableandreliablepositioning,andthesynchronousprocessingoftwosurfacesofpartswhichcansimplifyingtheproc
8、ess.Thesafer,morereliableandconvienthydraulicgripdevicesareemployedforastableandreliablegrip.Thecharateristicsofefficiency,lowcost,highprocessingaccuracy,easyoperation,Themachineto