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1、論文題目:典型難加工材料深孔鉆削工藝及試驗研究專業(yè):機(jī)械制造及自動化碩士生:黃華(簽名)流單指導(dǎo)教師:劉戰(zhàn)鋒(簽名)彭海(簽名)摘要機(jī)械制造業(yè)是國民經(jīng)濟(jì)的支柱，在切削加工中，孔加工約占加工總量的三分之一，而深孔加工又占孔加工的百分之四十。由于深孔是在封閉或半封閉的狀況下進(jìn)行，因此不能直接觀察刀具的切削情況、切削熱不易傳散，而且排屑困難、工藝系統(tǒng)剛性差，切削效果不理想。尤其是難加工材料的深孔鉆削加工是目前國內(nèi)外的技術(shù)難題。本課題在對深孔鉆削機(jī)理、DF和BTA系統(tǒng)排屑機(jī)理進(jìn)行深入研究的基礎(chǔ)上，在不銹鋼、欽合金和高溫鎳基合金的切削性能深入研究的基礎(chǔ)
2、上，合理選用刀具材料，設(shè)計結(jié)構(gòu)合理BTA鉆頭，選用優(yōu)良的切削液，對不銹鋼(OCrl7Ni4Cu4Nb)進(jìn)行深孔鉆削試驗，試驗孔徑由‘14.6mm，長度410mm和對欽合金(TC6,TC11)進(jìn)行深孔鉆削試驗，試驗孔徑(D64mm，長度1500mm左右以及對高溫鎳基合金(16X3H(DMB)進(jìn)行試驗，試驗孔徑中13.4mm、014.4mm，長度400mm,600mm。試驗結(jié)果證明試驗用鉆削系統(tǒng)鉆削效果良好，工藝可靠，并且還對產(chǎn)生良好工藝效果的原因進(jìn)行了分析。關(guān)鍵詞:深孔鉆削、內(nèi)排屑深孔鉆、刀片材料、不銹鋼、欽合金、高溫鎳基合金論文類型:應(yīng)用基礎(chǔ)
3、Subject:Studyandexperimentontechnicsofdeep-holedrillingofdifficulttocutmaterialsSpeciality:MachineBuildingandAutomationName:HuangHua(signature)一NorHwn,Instructor:LiuZhanfeng(signature)業(yè)絲鮮紛PengHai(signature)ABSTRACTMachinebuildingisthebackboneofthenationaleconomy.Holedrillin
4、gisaboutonethirdofthetotalamountofmachining.Especiallydeep-holedrillingisaboutfortypercentsofholedrilling.Becausedeep-holeisdrilledinclosedorhalf-closedposition,theconditionofcutercannotbeobserveddirectly.Therigidityofprocesssystemislow,thecutingheatspreadisnoteasy,thechipd
5、isposalisdifficultandcutingefectsarenotideal.Especiallysmall-diameterdeep-holedrillingofdifficult-to-cutmaterialsisadificultproblemindomesticandoverseas.Onthebaseofstudyin-depthonthemechanismofdeep-holedrillingandBTAsystemchipremoval,onthebaseofstudyin-depthonthemachinabili
6、tyofstainlesssteel,titaniumalloyandnickel-basedhightemperaturealloy,rationalchoosingcuteredgematerials,designingnewstructureofBTA,selectinggoodcoolingfluid.Operatedeep-holedrillingexperimentonstainlesssteel(0Cr17Ni4Cu4Nb),thediameteroftheholeis014.6mmandthelengthisabout410m
7、m:operatedeep-holedrillingexperimentontitaniumalloyCTC6,TC11)，thediameteroftheholeis(D64mmandthelengthisabout1500mmandonnickel-basedhightemperaturealloy(16X3H(DMB),thediameteroftheholeis013.4mm、014.4mmandthelengthisabout400mm、600mm。Resultsofexperimentshowthatthedrillingefec
8、tsaregoodandthetechnologyisreliable.Alsothereasonsoftechnicalefectsareanalyzed.Key
