数控中英文翻译.doc

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1、毕业设计（论文）中英文参考资料资料名称数控技术的发展与维修系别机电工程系专业数控技术班级数控0801姓名指导教师2010年11月DevelopmentandmaintenanceofCNCtechnologyNumericalcontroltechnologyandequipmentisthedevelopmentofnewhigh-techindustryandcutting-edgeenablingtechnology,industryandthemostbasicequipment.Theworldinformationindustry,biologicali

2、ndustry,aviation,aerospaceandotherdefenseindustrywidelyusednumericaltechniquestoimprovemanufacturingcapacityandlevel,toimprovetheadaptabilityofthemarketandcompetitiveness.IndustrialcountriesandCNCnumericalcontroltechnologyandequipmentwillalsobelistedascountriesofstrategicmaterials,noto

3、nlytodeveloptheirownnumericalcontroltechnologyandindustry,andin"sophisticated"technologyandequipment,numericalcontrolkeyaspectsofthepolicyofclosuresandrestrictions.Therefore,effortstodevelopadvancednumericalcontroltechnologyasthecoremanufacturingtechnologyhasbecometheworld'sdevelopedco

4、untriestoaccelerateeconomicdevelopment,enhancethecomprehensivenationalstrengthandanimportantwaytostatehood.TheN／Csystemconsistsofthefollowingcomponents：datainput，thetapereaderwiththecontrolunit，feedbackdevices，andthemetal—cuttingmachinetoolorothertypeofN／Cequipment．Datainput，alsocalled

5、“man—to—controllink”，maybeprovidedtothemachinetoolmanually，orentirelybyautomaticmeans．Manualmethodswhenusedasthesolesourceofinputdataarerestrictedtoarelativelysmallnumberofinputs．Examplesofmanuallyoperateddevicesarekeyboarddials，pushbuttons，switches，orthumbwheelselectors．Thesearelocate

6、donaconsolenearthemachine．Dialsaleanalogdevicesusuallyconnectedtoasyn-chro-typeresolverorpotentiometer．Inmostcases，pushbuttons，switches，andothersimilartypesofselectorsayedigitalinputdevices．Manualinputrequiresthattheoperatorsetthecontrolsforeachoperation．Itisaslowandtediousprocessandis

7、seldomjustifiedexceptinelementarymachiningapplicationsorinspecialcases．Inpracticallyallcases，informationisautomaticallysuppliedtothecontrolunitandthemachinetoolbycards，punchedtapes，orbymagnetictape．Eight—channelpunchedpapertapeisthemostcommonlyusedformofdatainputforconventionalN／Csys