碳鋼高速車削中切削熱的試驗研究與有限元分析.pdf

1、華南理工大學(xué)碩士學(xué)位論文碳鋼高速車削中切削熱的試驗研究與有限元分析姓名：何振威申請學(xué)位級別：碩士專業(yè)：機械制造及其自動化指導(dǎo)教師：全燕鳴20050501華南理工大學(xué)碩士學(xué)位論文AbstractNowadays，theadvancedmanufacturingtechnologiesaredevelopedinallovcrtheworld，andalsoinChinaHighspeedmachining(HSM)technologyis

2、researchedandappliedinglobalareaandbecomesthetidalcurrent，owingtoit’Slotsofsuperiorities，suchashighefficiency，highmachiningquality，andSOonHSMisratherdifferentintheaspectsofcuttingheat，cuttingtemperature，chipdeformingandc

3、uttingforce，comparedwithtraditionalmachiningCuttingheatandtemperaturehavedirectlyinfluenceontoolwearandlife，andalsoonmachiningprecisionandmachinedsurfacequalityCuttingheatandcuttingtemperatureaswellastheirvarietylawsinhi

4、ghspeedmachiningaretheimportantcontentsofHSMresearchesInthispaper，someessentialprinciplesandmeasurementsofcuttingheatandcuttingtemperatureresearchedwithcalorimetermethod，mathematicalanalysis，finite—elementmethod(FEM)anda

5、rtificialthermocouplemethodarediscussedUsingthesemethodsandbyexperimentstheauthorsystematicallyinvestigatedthepropertyandvarietylawofcuttingforceinthehighspeedturningofmediumcarbonsteel，thechipformanditsthickness，theleng

6、thoftool／chipcontactinterface，andthequantificationaldistributionofcuttingheatinthemachiningsystem(chip，workpiece，toolandenvironment)，thevarietylawsofcuttingtemperatureintool／chipcontactinterfaceandintootThroughseriesofex

7、perimentsandFEManalysis，theapplicabilityanduniformityoftheseresearchmethodswereprovedTheresearchresultsindicatethefacts：thecuttingheatmeasuringdevicedesignedbytheauthorcanbeusedtowellandtrulyinvestigatethequantificationa

8、ldistributionofcuttingheatintheclosedmachiningsystem；WiththemathematicalanalysisofcuttingheatandbymeansofcuttingexperimentstOobtainthosenecessaryparametersvaluessuchascuttingforces，chipthicknessandtool／chipinterfacelengt

9、hetc，theaveragetemperatureinshearplanandinthetool／chipinterfacecanbecalculated，further，thequantjfjca“onaldistributionofcuttingheatinthemachiningsystemcanbeobtained，F(xiàn)EMatsoisastrongtoolforanalyzingcuttingheatandcuttingtem

10、peratureThefollowingconclusionsareelicitedinthepaper：inthehighspeedturningofmediumcarbonsteel，thecuttingforceincreasesfirst，thendecreaseswiththeincreaseofcuttingspeed(undertheexperimentalconditionsinthispaper，thecorrespo

11、ndingtransitionspeedrangeisin400—800m／min)；whencuttingthesamelength，withtheincreaseofcuttingspeed，thecuttingheatofchipincreases，butthatofworkpieceandtooldecreases；withtheincreaseofcuttingspeed，thepowerconsumedduringtheII