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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(yàn)研究專業(yè):機(jī)械制造及自動(dòng)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(guó)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(guó)內(nèi)外的技術(shù)難題。本課題在對(duì)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(jì)結(jié)構(gòu)合理BTA鉆頭,選用優(yōu)良的切削液,對(duì)不銹鋼(OCrl7Ni4Cu4Nb)進(jìn)行深孔鉆削試驗(yàn),試驗(yàn)孔徑由‘14.6mm,長(zhǎng)度410mm和對(duì)欽合金(TC6,TC11)進(jìn)行深孔鉆削試驗(yàn),試驗(yàn)孔徑(D64mm,長(zhǎng)度1500mm左右以及對(duì)高溫鎳基合金(16X3H(DMB)進(jìn)行試驗(yàn),試驗(yàn)孔徑中13.4mm、014.4mm,長(zhǎng)度400mm,600mm。試驗(yàn)結(jié)果證明試驗(yàn)用鉆削系統(tǒng)鉆削效果良好,工藝可靠,并且還對(duì)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