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1、加工中心AC铣头设计[摘要]随着数控技术的发展、可靠性的提高和价格的下降,近年来多轴联动机床的技术、品种和功能价格比有很大的提高。由于用多轴联动加不再过于昂贵,加之原先用数个零件拼装的组件已设计成单个整件,用多轴联动机床加工也促进了多轴联动机床的发展。多轴联动是加工航空、航天发动机叶片,涡轮盘和模具等复杂型面的高效方法,它能使刀具切削刃始终保持与切削面垂直,改善切削条件和提高加工表面质量。例如加工汽轮机叶片型面,在获得相同的表面粗糙度值时,应用五轴联动可以比用三轴联动加工采用更高的进给速度,提高生产效率2倍左右。又如加工内腔型面时,五轴联动可以防止刀具与已加工
2、表面发生干涉,工件不需多次安装、调整就能完成全部加工。因此随着对产品制造质量的要求不断提高,多轴联动加工技术的应用日益扩大。A/C轴双摆角铣头的应用是加工中心实现五轴联动加工最理想的方法之一,亦是五轴联动数控铣床的核心部件,目前国内外市场上形式多样的A/C轴双摆角铣头竞相亮相其结构和性能各有千秋本文基于普通加工中心基础上而设计的一款A/C轴双摆角附件铣头如同其它附件铣头(如等附件铣头一样)可以被放置在附件铣头库中机床可以根据指令随时调用轴双摆角附件铣头实现五轴联动加工[关键字]五轴联动A/C铣头加工中心Processingcenter,ACmillinghea
3、ddesign[Abstract]Alongwiththedevelopmentofnumericalcontroltechnology,significantlyimprovethereliabilityandprice,inrecentyearstheaxismachinetooltechnology,varietyandpriceratioisgreatlyimproved.Duetotheuseofmulti-axisandnottooexpensive,inadditiontotheoriginalbyapluralityofpartsassembled
4、componentshavebeendesignedintoasinglewhole,multi-axismachinetoolsforprocessingitalsopromotedthedevelopmentofmulti-axismachinetools.Multi-axismachiningaviation,aerospaceengineblade,efficientmethodofturbinediscandthecomplicatedmouldsurface,itcanmakethecuttingedgeandcuttingfacealwayskeep
5、vertical,improvethecuttingconditionsandimprovethequalityofmachinedsurface.Forexampletypeturbineblademachiningsurface,thesamesurfaceroughnessvalue,feedingspeedusingfiveaxislinkagecanbehigherthanusingthreeaxislinkageprocessing,improvetheproductionefficiencyofaround2times.Andastheprocess
6、ingchamberface,fiveaxislinkagecanpreventthecuttingtoolandthemachinedsurfaceofworkpieceinterference,withoutrepeatedinstallation,adjustmentcanbecompletedprocessing.Therefore,withtheincreasingrequirementsformanufacturingqualityproducts,processingandapplicationsofmulti-axisgrowing.Applica
7、tionofA/Caxisdoublependulumanglemillingheadisoneofthefiveaxislinkageprocessingmethodisthemostidealprocessingcenter,alsoisthecorepartoffive-axisNCmillingmachine,atpresentthedomesticandforeignmarketformsofA/CaxisBi-Rotarymillingheadracedebutofitsstructureandperformanceofeachhasitsownmer
8、its.T