电气工程及其自动化专业计算机数字控制基础大学毕业论文外文文献翻译及原文

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1、毕业设计（论文）外文文献翻译文献、文献、文献、文献、资料中文题目：计算机数字控制基础资料英文题目：ThebasicsofComputerNumericalControl资料来源：院（部）：专业：电气工程及其自动化班级：姓名：学号：资料发表（出版）日期:指导教师:翻译日期:2017.02.14本科毕业设计（论文）外文翻译ThebasicsofComputerNumericalControlWhilethespecificintentionandapplicationforCNCmachinesvaryfrommachinetypetoanother,all

2、formsofCNChavecommonbenefits.ThoughthethrustofthispresentationistoteachyouCNCusage,ithelpstounderstandwhythesesophisticatedmachineshavebecomesopopular.HerearebutafewofthemoreimportantbenefitsofferedbyCNCequipment.ThefirstbenefitofferedbyallformsofCNCmachinetoolsisimprovedautomati

3、on.Theoperatorinterventionrelatedtoproducingworkpiecescanbereducedoreliminated.ManyCNCmachinescanrununattendedduringtheirentiremachiningcycle，freeingtheoperatortodoothertasks.ThisgivestheCNCuserseveralsidebenefitsincludingreducedoperatorfatigue,fewermistakescausedbyhumanerror,and

4、consistentandpredictablemachiningtimeforeachworkpiece.Sincethemachinewillberunningunderprogramcontrol,theski11levelrequiredoftheaCNCoperator(relatedtobasicmachiningpractice)isalsoreducedascomparedtoamachinistproducingworkpieceswithconventionalmachinetools.ThesecondmajorbenefitofC

5、NCtechnologyisconsistentandaccurateworkpieces.Today’sCNCmachinesboastalmostunbelievableaccuracyandrepeatabilityspecifications.Thismeansthatonceaprogramisverified,two,ten,oronethousandidenticalworkpiecescanbeeasilyproducedwithprecisionandconsistency.Athirdbenefitofferedbymostforms

6、ofCNCmachinetoolsisflexibility.Sincethesemachinesarerunfromprograms,runningadifferentworkpieceisalmostaseasyasloadingadifferentprogram.Onceaprogramhasbeenverifiedandexecutedforoneproductionrun,itcanbeeasilyrecalledthenexttimetheworkpieceistoberun.Thisleadstoyetanotherbenefit,fast

7、change-overs.Sincethesemachinesareveryeasytosetupandrun,andsinceprogramscanbeeasilyloaded,theyallowveryshortsetuptime.Thisisimperativewithtoday’sJust-In-Timeproductrequirements.1.Motioncontrol-theheartofCNCThemostbasicfunctionofanyCNCmachineisautomatic,precise,andconsistentmotion

8、.Ratherthanapplyingcompletelymechanicald