冷凝器電機(jī)換向器冷擠壓成形工藝研究與計(jì)算機(jī)模擬.pdf

1、分類號(hào)——UDC——一一一／一一一，、00489l密級(jí)————莘卞斟技大署碩士學(xué)位論文冷凝器電機(jī)換向器冷擠壓成形工藝研究與計(jì)算機(jī)模擬學(xué)位申請(qǐng)入學(xué)科專業(yè)指導(dǎo)教師余斌工業(yè)工程陳學(xué)東教授論文答辯日期29Q5生旦!Q旦學(xué)位授予日期壘旦—旦一答辯委員會(huì)主席圍重：!評(píng)閱人筮握矗圍垂玉一使壁強(qiáng)華中科技大學(xué)碩士學(xué)位論文AbstractMetalcoldextrusionformingisanadvancedmanufacturetechnologyof

2、highefficiency，highprecision，lowconsumption，whichtakesanimportantrankinthedevelopmentofnationaleconomyandthefieldofmaterialprocessThecurrentn℃ndofmetalplasticformingtechnologytowardsaccuracy，complicationandqualityoptimiz

3、ationPrecisecoldformingtakingmainattosupplynear。net—shapeSOfarasnetshapecomponent，hasattractedmuchattentionandisbeingappliedmoreandmorewidelyindevelopedcountries。Withthefastdevelopingofmanufactureindustryandthesharpening

4、ofinternationalcompetition，high—precision，goodperformance，high—efficiencyandlowcostofmanufactureprocessareprincipalwaystoimprovetheproduct’scompetitionSo‘‘PreciseForming”hasbecomethetrendofmanufacturePrecisecoldforming，w

5、hichhasbeenthedirectionofplasticsforming，isusedmoreandmorewidelyInthispaper，thecoldextrusionprocessandformingsimulationofthecommutatorinthispaperisresearchedThefollowingsalethesulnlnaryofmainresearchworks：1、Basedonanewme

6、talformingsimulationpackage，MSCSuperforge，thecoldextrusionprocessofsection—discontinuity&multiheadsextrusionpartsissimulatedandtherulesofplasticshapeincoldextrusionprocessarediscussed2、Thebased—on—EulerFiniteVolumeMethod

7、(FVM)isusedtosimulatethecoldextrusionprocessofshape—complication§iondiscontinuitypartThesimulationresultsprovetobecomparativelyprecise3、Byformingsimulation，obtainingthevalueofpressureinthecoldextrusionisclosetotheres

8、ultsofprocesstest(about10％error)Itprovidesreferencedatafordesigningmould，heattreatmentandselectingtheexperimentequipment4、Bysimulationmethodandconsideringmaterialusingratio，obtainingthesizeofflan(thickwallsheettan：t44mm)