机械设计课后练习

..σs260MPa，σ1Φ170MPa，σ命0.2]AC(26'Φσσ02σσ10σ02σ11Φσσ02σ11Φσ2170Pa10.2283.33M得D(283.33,283.33)D(141.67,141.67)精品文档放心下载''22A，C(260,0)，D(141.67,141.67)精品文档放心下载''：=72mm，=62mm，=3mm。如用题，设其强度极限精品文档放心下载σβBq]因D1.2，r31.88得得qddσσ0.78，.学习帮手...k1qσσσεσ110.781.8811.690.75βσ0.91βq则1，Kk111.6911σεβσβq0.750.911σσA,C260,0,D141.67,141.672.352.35A0,72.34,C260,0,D141.67,60.29精品文档放心下载σσmσCS。m170MPa,]σσ260MPa,Φs20MPa，0.2,K2.35σσa②20MPa，①rC）rC感谢阅读ScaKσσa）σmσΦσσm1702.282.35300.220C精品文档放心下载.学习帮手...1.811702.350.2σSΦcaK20σσ2.35300σσσmKσam图4精品文档放心下载精品文档放心下载×谢谢阅读]精品文档放心下载谢谢阅读[]由螺栓材料，性能等级，查表，可知[σs]640MPa，查表，可知[S]3.5~5.0[][σ]640182.86~128MPas[S]3.5~5.0σ[σ]s426.67MSPapp1.5FTFLFFiF2cos即r2mmj11FF2.5kNi88FL300103Fj52kN82103TFFFij2F22iFjcosθ2.52(52)222.552cos459.015kN.学习帮手...03Fmax9.0151[]d244061032σpF[σmaxdL0min9.0151036101033131.8p]故6感谢阅读谢谢阅读感谢阅读]FFFiTFj精品文档放心下载FiFj11F66FL60103r6103FmaxFiFj30kNFiFj11F10kN66FLr6r26r2ii1i1i210323224.39kN22262422Fmax由d0FFcosθ102(24.39)2F2Fj224.3922iji4Fmax可知采用（）布置形式所用的螺栓直径较小25感谢阅读.学习帮手...的谢谢阅读精品文档放心下载谢谢阅读VP7.5kW，带速ν10msF1F2FFe0F]Pνe7.5F750NeνF且FeFF2F12122F2750Fe11500NFFe21F01F750e1500F0F1125N22。.学习帮手...感谢阅读].学习帮手...设计铣床中的一对圆柱齿轮传动，已知感谢阅读P7.5kW,n1450rz11154，寿命zL2h支12000h]7谢谢阅读10-1精品文档放心下载。谢谢阅读.学习帮手...d1t2.32KTu1Z23uσΦ1EdHKt1.5105P1057.5T149397Nmm1n14501Φd1.0ZE189.8MPa12σHlim1齿600MPa轮的接触疲劳强度极限σ550MPa。Hlim2uzz21542.0826N160nN2N16011.04410h1.04410990.5021091u2.08KHN10.98,K1.021%S1σσHH12Kσ0.98600588MPaHN1SHlim11Kσ1.03HN2Hlim2aS

1dσH.学习帮手...d1t22KTu1Z1.5493972.081189.832.3253.577mmuσ1

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3Φ12.08566.5dHννdn1t13.141000s4.06bbΦdd153.57753.577bhmtdz153.577262.061mmh2.25m2.252.0614.636tb11.564.636h感谢阅读ν4.066ms7Kv1.2K1KHFKA1.251.420KHβ由b11.56，K1.420得KhHβFβ1.37KK1.251.211.4202.13KKKAvHH谢谢阅读d1K2.13d53.5773K1.560.22tm.学习帮手...mdz1160.222.32mm26取md1mzd2mzad12.52612.5542d100mm2222KTu12.5Z2b1dEuσH22.13493972.0812.5189.826522.08566.5精品文档放心下载51.74mmb2b1。σFE1疲500MPaσ380MPa。FE2KFN10.89,K0.93。2SσFσF12KσaFN1FE1S1.4317.86MPKσ2FE2252.43MPaS1.4KKKKKAFF1.251.211.372.055.学习帮手...YFa12.6YFa22.304YSa11.595YSa21.712σF2KT1YYbdmFSaa1σFσF12.61.59599.64MPaσ2KT22.05549397YY1bdm52652.5FSFa1a111σF22.31.71294.61MPaσ2KT22.055493971YYbdm52652.5FSFa2a212谢谢阅读精品文档放心下载]精品文档放心下载精品文档放心下载α精品文档放心下载正装。轴颈直径d，工作中有中等冲击，转速n1800r感谢阅读Fr13390N，Fr23390NF870N，作用]F和Fa2α，按表，Fd0.68Fr，.学习帮手...eFd10.68Fr10.6833902305.2NFd20.68Fr20.681040707.2NFa1,FFd1Fd22305.2,870707.22305.2N,FFa2Fd2d1P1707.2,2305.28701435.2NFP和12FFr1Fa2Fr22305.2e33901435.2e10400.681.38感谢阅读11XYY1100.412X220.87fp则1.5，PX1.5102305.2fYFF11