先进制造技术（有出处）--中英文翻译.doc

《先进制造技术（有出处）--中英文翻译.doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、毕业设计（论文）外文资料翻译系别：机械工程学院专业：机械设计制造及其自动化外文出处AdvancedManufacturingTechnology附件：1、夕卜文原文；2、夕卜文资料翻译译文。指导教帅评语:签字：1、外文原文（复印件）AdvancedManufacturingTechnologylimitationsonacceptablefeedrates—determinedbytheabilityofthecuttingtooltowithstandincreasedcuttingloadswithoutfracture.Increasingradialcuttingdepthsal

2、socouldincreaseremovalrates,althoughcuttingdepthisoftendeterminedbytheamountofstockremovalrequired.Asinthecaseofincreasedfeedrates,toollifedecreasedwithincreaseddepthofcut.Ass：tangentialexpectedtatradeoffexistsbetweentoollifeandremovalrate.Therearethreeforcesgeneratedineverymetalremovalprforce,ge

3、neratedbythepartrotation;radialforcefgeneratedbytheresistanceoftheworkpiecematerialtodepthofcut;and,lastly>longitudinalforce,generatedbythefeedrateapplied.Theseforcesare30%to80%greaterthanin“soft"machiningprocesses.Forexamplefwhencomparingpreheat-treatedtoheai・treatedsteelwithahardnessof62HRCtthe

4、longitudinalforceincreasesfrom30%to50%especiallyintheradialdirection・Cuttingcoolantcaninfluencethegenerationofwhitelayer.Becausewhitelayeristhoughttooc

5、curastheresultofaphasetransformationonthesurface,cuttingcoolantmighthelpeliminatethennaldamagebykeepingtheworkpiecesurfacecookSo(nereportssaycuttingcoolanteliminateswhitelayer,butotherstudiesshowcoolanthavingnoeffect・Toolconditionisalsobelievedtobeanimportantfactortwithnewtoolsproducingundamageds

6、urfaces,whilewhitelayerincreaseswithincreasingtoolwear.Ifhardturningistoreplacefinishgrindingoperations,itmustbecapableofproducingsurfacefinishescomparabletothosegeneratedbygrinding.Unlikegrinding,wheresurfacefinishisdetenninedbythesize,shape,hardness,anddistributionofabrasivegrainsinthegrindingw

7、heel,hard-turnedsurfacesarenominallydefinedbythegeometryofthecuttingprocess,primarilybythecuttingloofsfeedrateandnoseradius.Forgrindingcylindricalapplications,boththewheelandtheworkpiecemustrotate.Moreover,thewheelrota