直齒輪和斜齒輪承載能力計(jì)算 第31部分：微點(diǎn)蝕承載能力算例

GB/ZXXXX—XXXX/ISO/TR6336-3直齒輪和斜齒輪承載能力計(jì)算第31部分：微點(diǎn)蝕承載能力算例本文件給出的計(jì)算示例僅適用于ISO/TS633料或潤(rùn)滑劑的允許值，或用作實(shí)際產(chǎn)品中微觀要求的推薦值。對(duì)的方法確定必要的參數(shù)和許用膜厚比λGFP。GB/Z3480.22—2024直齒輪和斜齒輪承載能力計(jì)算第22部分：微點(diǎn)蝕承載能力計(jì)算（ISO6336-22:2018,IDT）DefinitionsrelatedtogeomeISO6336-1直齒輪和斜齒輪承載能力計(jì)算第1部分：基本原理、概述和通用影響系數(shù)（Calculationofloadcapacityofspurandhelicalgears—Pa 注：GB/T3480.1—2019直齒輪和斜齒輪承載能力計(jì)算第1部分：基本原理、概述和通用影響系數(shù)（ISOofloadcapacityofspurandhelicalgears—Part2:Calculationofsurfacedurability(pitting)]注：GB/T3480.2—2021直齒輪和斜齒輪承載能力計(jì)算第2部分：齒面接觸疲勞強(qiáng)度（點(diǎn)蝕）計(jì)算（ISOISO21771齒輪漸開線圓柱齒andgearpairs—Conceptsandge4符號(hào)和單位表2中的符號(hào)適用于本文件。長(zhǎng)度單位米、毫米和微米的選擇是按照常規(guī)慣例給出的aA BM1N/(m·s0.5·K)BM2N/(m·s0.5·K)GB/ZXXXX—XXXX/ISO/TR6336-3bN/(mm·μm)N/(mm·μm)da1da2db1db2dw1dw2dY1dY2ErN/mm2E1N/mm2E2N/mm2FbtNFtN—gYgαHv—KA—KBγ—KHα—KHβ—Kv—Kγ n1Ppetpdyn,Y含載荷系數(shù)K的局部赫茲接觸應(yīng)力N/mm2GB/ZXXXX—XXXX/ISO/TR6336-3pH,YN/mm2RaRa1Ra2—Sλ—Sλ,min—T1Nm—u———Xbut,Y XCa XL—XR XS—XY—ZEz1—z2 °°βb° — GB/ZXXXX—XXXX/ISO/TR6336-3——— N·s/m2N·s/m2N·s/m2N·s/m2— λGFP—λGFT—λM1λM2μm—ν1—ν2—ρM1kg/m3ρM2kg/m3ρn,Cρn,Yρt,Yρt1,Yρt2,YρθB,Ykg/m3ρθMkg/m3ρ15kg/m3GB/ZXXXX—XXXX/ISO/TR6336-3Y本章提供了抗微點(diǎn)蝕安全系數(shù)Sλ的計(jì)算示例。首先根據(jù)方法B計(jì)算每個(gè)示例，然后根據(jù)方法A計(jì)算示例1、3和4。根據(jù)方法B提供的計(jì)算步驟使用輸入數(shù)據(jù)進(jìn)行合理計(jì)算。除了提供公式本身，還提供與用于標(biāo)準(zhǔn)FZG功率封閉背對(duì)背試驗(yàn)臺(tái)和標(biāo)準(zhǔn)的試驗(yàn)條件。在第一個(gè)算例的基礎(chǔ)上，根據(jù)FZG-FVA微點(diǎn)蝕試驗(yàn)[1]（方法B）的結(jié)果計(jì)算λGFP的值。對(duì)于示例3，由臺(tái)架試驗(yàn)確定其許用膜厚比λGFP。該示例的結(jié)果已通過(guò)試驗(yàn)研究得到驗(yàn)證。齒輪出現(xiàn)了明顯的微型凹坑，且造成齒廓偏差約8μm至GB/ZXXXX—XXXX/ISO/TR6336-3z———x°β°0bax—da——A 55Ra——EN/mm2ν λMρMkg/m36336-22:2018,表A.1（滲碳淬火/滲碳淬—KA—Kv—Kγ KHα—KHβ—T1n1 ρ15kg/m3— — λGFP—GB/ZXXXX—XXXX/ISO/TR6336-3mt=10.93mm.mtd2=z2.mt.=arctanαt=20.000db1db22cosαtdw2w1αβb=arcsin(sinβ.cosαn)βb=0。pet=mt.π.cosαtpet=32.267mm2.πL(db1,ε2.πL(db1,ε2εγ=εα+εβεY=1.411?a.sinαwtgα=45.519mmgAgAB=gα?pet2GB/ZXXXX—XXXX/ISO/TR6336-3gB=gα?pet（34）.tanαwt?（35）gD=pet（36）gE=gα（38）（39）dAB1=190.046mmdB1=193.546mmdD1=207.998mmdDE1=214.394mmdA2dAB2=214.394mmdB2=207.998mmdD2=193.546mmdDE2=190.046mm（43）pn,AB=15.663mmpn,B=17.890mmpn,D=17.890mmpn,DE=15.663mm5.2.3.2材料數(shù)據(jù)計(jì)算pp（84）601000 td1F=2000.T1 btdb1注：無(wú)齒面修形，直齒輪，ISO公差等級(jí)≤7（見GB/Z3480.22—2024，圖2)。gBgC=22.760mmgD=32.267mmgDE=28.893mmgEdA1dC1dE1dA2dC2=200.000mmdE2pn,A=12.285mmpn,C=19.074mmpn,E=12.285mmE=226374N/mm2r0.5KtF=20316NbtGB/ZXXXX—XXXX/ISO/TR6336-3XA=0.333XAB=0.500XB=1.000XC=1.000XD=1.000XDE=0.500XE=0.333pH,AB,B=1045?N/mm2pH,D,B=1383N/mm2pdyn,AB,B=1175N/mm2pdyn,D,B=1555N/mm2vg,A=vr1,?A?vr2,?Avg,AB=?10.137m/svg,D=5.974m/svΣ,A=vr1,?A+vr2,?AvΣ,AB=23.969m/svΣ,D=23.969m/sRa=0.5.(Ra1+Ra2)pH,B,B=1383N/mm2pH,DE,B=1045N/mm2pdyn,B,B=1555N/mm2pdyn,DE,B=1175N/mm2?5.974m/svg,DE=10.137m/svΣ,B=23.969m/svΣ,DE=23.969m/s5.2.3.4潤(rùn)滑參數(shù)計(jì)算XL=1.0礦物油（GB/Z3480.22—2024，α38=2.657.10?8.η8.1348（9）5.2.3.5材料參數(shù)計(jì)算XR=2.2.0.25（86）對(duì)于εγ<2，KBγ=1.00.5ZEN/mm2)0.5pH,A,BpH,C,BpH,E,B=963N/mm2=1339N/mm2=963N/mm2pdyn,A,Bpdyn,C,Bpdyn,E,B=1084N/mm2=1506N/mm2=1084N/mm2vg,A=?14.300m/svg,C=0m/svg,E=14.300m/svΣ,A=23.969m/svΣ,C=23.969m/svΣ,E=23.969m/sα38=2.15.10?8m2/NA=-3.385B=8.815XR=1.025GB/ZXXXX—XXXX/ISO/TR6336-3.XR.XL（85）μm=0.048（90）Hv=0.204εmax=ε1=ε2XCA=1.0無(wú)齒廓修行（方法B99）GM=106.αθM.Er（5）GM=2678.35.2.3.6本體溫度下動(dòng)力黏度ηθM=10?6.vθM.PθM5.2.3.7速度參數(shù)計(jì)算UAB=1.571×10?11UD=1.375×10?11UB=1.375×10?11UDE=1.571×10?11vθM=5.824mm2/sPθM=798.0kg/m3UAUCUE4.647.10?3Ns/m2=2.003×10?11=1.290×10?11=2.003×10?115.2.3.8載荷參數(shù)計(jì)算WD=2.966×10?4WB=2.966×10?4WDE=1.694×10?4WA=1.440×10?4CCWEW。θf(wàn)l,AB=154.1C。θf(wàn)l,D=145.4CθB,A=θM+θf(wàn)l,A。θf(wàn)l,B=145.4C。θf(wàn)l,DE=154.1C。θf(wàn)l,A。θf(wàn)l,C=0C。θf(wàn)l,E=175.3C。θB,A=328.9CGB/ZXXXX—XXXX/ISO/TR6336-3oθB,AB=307.7CoθB,D=299.0CSGF,AB=0.076SGF,D=0.0865.2.3.10潤(rùn)滑劑油膜厚度計(jì)算hA=1600.Pn,A.G.U.0.13.S.,5.2.3.11潤(rùn)滑劑膜厚比計(jì)算λGF,AB=0.153λGF,D=0.152λGF,min=λGF,A=λGF,EoθB,B=299.0CoθB,DE=307.7CSGF,B=0.086GF,DEGF,DEλGF,B=0.152λGF,DE=0.153oθB,C=153.6CoθB,E=328.9CSGF,A=0.057GF,CGF,GF,CGF,ES=0.057hA=0.122μmλGF,A=0.136λGF,C=0.267λGF,E=0.136λGF,min=0.1365.2.3.12微點(diǎn)蝕安全系數(shù)計(jì)算Sλ=（1）Sλ=0.644點(diǎn)ABCDEλGFPSλ表5壓力分布矩陣pH,Y,A（N/mm2）AGB/ZXXXX—XXXX/ISO/TR6336-3BCDEABCDE（1）Sλ=0.577注：算例1中方法A和方法B計(jì)算得到的安全系數(shù)的差異是由于根據(jù)方法B進(jìn)行荷載分布簡(jiǎn)化計(jì)5.2.5.1概述比。由于齒輪類型C的潤(rùn)滑劑最小膜厚比始終位于A點(diǎn)，因此在A點(diǎn)進(jìn)行其參考值λGFT的計(jì)算。參考測(cè)試齒輪C-GF類型的所有數(shù)據(jù)均帶有下標(biāo)“Ref”。zRef—mtRef端面模數(shù)(mnRef=mtRef)αnRef端面壓力角(αnRef=αtRef)°βbRef基圓螺旋角(βbRef=βRef)°0bRefGB/ZXXXX—XXXX/ISO/TR6336-3aRefxRef daRef——RaRefERefN/mm2νRef—λMRefcMRefρMRefkg/m3 KARef—KvRef—KHαRef KHβRef—n1Ref—pH,A,AN/mm2——注：KvRef和KHβRef的取值在標(biāo)準(zhǔn)FZG功率封閉試驗(yàn)臺(tái)和標(biāo)準(zhǔn)條件下是有效的。表8給出了C-GF型參考測(cè)試齒輪在點(diǎn)A的名義赫茲接觸應(yīng)力，其是FZG-FVA微點(diǎn)蝕試驗(yàn)[1]中所達(dá)到NmN/mm2N/mm2567895.2.5.2齒輪幾何計(jì)算GB/ZXXXX—XXXX/ISO/TR6336-3d1Ref=z1Ref.mtRefd2Ref=z2Ref.mtRefdb1Ref=d1Ref.cosαtRefdb2Ref=d2Ref.cosαtRefdw1Ref=dw2Ref=2.aRef?dw1RefαwtRefpetRef=mtRef.π.cosαtRefεwtRef z2Ref「(da2Ref)2ε2Ref z2Ref「(da2Ref)2αpetRef|(\4444,αpetRef|(\4444,εβRef=εyRef=εαRef+εβRefgαRef=0.5.(+)?aRef.sinαwtRefgARef=0mmdA1RefdA2Ref(4(4?((,,2,|(42,|(4?)d1Ref=72.00mmd2Ref=108.00mmuRef=1.5db1Ref=67.658mmdb2Ref=101.7487mmdw1Ref=73.20mmdw2Ref=109.80mm。αwtRef=22.439petRef=13.285mmε1Ref=0.722ε2Ref=0.714εβRef=0εyRef=1.436gαRef=19.079mmgARef=0mmdA1Ref=68.249mmdA2Ref=118.350mmd1Ref?d1Refptpt2,ARefpt1,CRef=d1Ref?d1Ref4pt2,ARefpt2,CRef=d2Refpt2,ARefpt2,CRef4d2Ref?d2Ref4（42）pt1,ARef=4.482mm（42）pt1,CRef=30.443mm（42）pt2,ARef=30.443?mm（42）pt2,CRef=20.955mmpt,ARef=（41）pt,ARef=pn,ARef=3.907mmpt,CRef=（41）pt,CRef=pn,CRef=8.382mmGB/ZXXXX—XXXX/ISO/TR6336-35.2.5.4FVA-FZG微點(diǎn)蝕試驗(yàn)工作條件計(jì)算pH,A,ARef=pH,A,Avg,ARef=vr1,ARef?vr2,ARefvΣ,ARef=vr1,ARef+vr2,ARefvΣ,CRef=vr1,CRef+vr2,CRefRaRef=0.5.(Ra1Ref+Ra2Ref)ppdyn,A,ARefpH,A,ARef=1 （3）ErRef=226374N/mm2BM1Refms0.5KBM2RefPRefbtRefF=5072.6NbtRef=1229N/mm2191N/mm2vr1,ARef=1.056m/svr1,CRef=3.292m/svr2,ARef=4.782m/svr2,CRef=3.292m/svΣ,ARef=5.838m/svΣ,CRef=6.583m/sRaRef=0.50μm5.2.5.5潤(rùn)滑數(shù)據(jù)計(jì)算ηθoilRef=ηθoil=0.021N.s/m2XSRef=1.2噴射潤(rùn)滑5.2.5.6許用潤(rùn)滑劑膜厚比計(jì)算KBγRef=1.0forεγ<2ΠK=K.K.K.K.KRefARefvRefHαRefHβRefBγRefXRRef=1.087RefRefGB/ZXXXX—XXXX/ISO/TR6336-3εα無(wú)齒廓修形時(shí)XCaRef=1.0θMRefMRefηθMRef=10?6.vθMRef.PθMRefGMRef=106.αθMRef.ErRefθB,ARef=θMARef+θf(wàn)l,ARef=A.logηθB,ARef=10?6.vθB,ARef.PθB,ARefhARef=1600.Pn,ARef.G.U.ef.3.S.,RefλGFP=1.4.WW.λGFT5.3算例2直齒輪5.3.1概述（8）（5）（4）（2）vRefvRefvθMRef=12.317mm2/sPθMRef=824.4kg/m3ηθMRef=0.010N.s/m2αθMRef=1.435.10?8m2/NUARef=3.351×10?11WARef=1.825×10?4θf(wàn)l,ARef=82.5。CθB,ARef=198.3vθB,ARef=PθB,ARef=ηθB,ARef=αθB,ARef=GF,ARefh=0.0753.112mm2/s766.7kg/m30.002N.s/m29.363.10?9m2/N0.153μmλGFT=0.151該示例的結(jié)果已通過(guò)試驗(yàn)研究得到驗(yàn)證。齒輪出現(xiàn)了明顯的微點(diǎn)蝕，且齒廓偏差約為15μm。圖2GB/ZXXXX—XXXX/ISO/TR6336-3注：算例2僅根據(jù)方法B進(jìn)行計(jì)算.此外，根據(jù)方法B計(jì)算時(shí)未考慮齒面修形。z— x°β°0bax da——A級(jí)—66Raμm——EN/mm2ν—λMGB/ZXXXX—XXXX/ISO/TR6336-3ρMkg/m3材料系數(shù)，根據(jù)ISO/TS6336-2—KA—Kv—Kγ KHα—KHβ—T1n1ρ15kg/m3 λGFP mtmttd2=z2.mtd2=200.00mmzzz1αt=20.000。db1=d1cosαtdb1=187.939mmdb22cosαtdb2=187.939mmdw1dw2dw2αGB/ZXXXX—XXXX/ISO/TR6336-3βb=arcsin(sinβ.cosαn)ε?α.sinαwt| ε2?α.sinαwt| dd?44dd?441εαpetdd?44εβ=b.sinβmn.πεγ=εα+εβ?α.sinαwtβb=0。pet=29.521mmε1ε2εαεβ=0εγ=1.557gα=45.960mmgA=0mmgAB=gα?pet2gB=gα?petgC=.tanαwt?+gαgD=petgDEetgE=gαdd1)2αA|,dAB1dD1=204.844mm,d,d2)2A|dAB2dD2=195.912mmpn,A=pt,Acosβbpn,AB=13.916mmpn,DdB1=195.912mmdDE1dB2=204.844mmdDE2pn,B=16.475mmpn,DE=13.916mmgA=0mmgAB=8.219mmgB=16.439mmgC=22.980mmgD=29.521mmgDEgE=45.960mmdA1=189.274mmdC1=200.000mmdE1=220.000mmdA2=220.000mmdC2=200.000mmdE2=189.274mmpn,A=9.281mmpn,C=17.101mmpn,E=9.381mmGB/ZXXXX—XXXX/ISO/TR6336-3=2.（6）Er=226374N/mm2ms0.5K)0.5K)t=2000.Fbt=25540N（44）XA=0.333XAB=0.500XB=1.000XC=1.000XD=1.000XDE=0.500XE=0.333.（25）pH,A,B=1476N/mm2pH,AB,B=1485N/mm2pH,B,B=1930N/mm2pH,C,B=1894N/mm2pH,D,B=1930N/mm2pH,DE,B=1485N/mm2pH,E,B=1476N/mm2.（24）pdyn,A,B=1541N/mm2pdyn,AB,B=1550N/mm2pdyn,B,B=2014N/mm2pdyn,C,B=1977N/mm2pdyn,D,B=2014N/mm2pdyn,DE,B=1550N/mm2pdyn,E,B=1541N/mm2vg,A?4.813m/svg,AB=?3.091m/s?1.370m/svg,C=0m/svg,D=1.370m/svg,DE=3.091m/svg,E=4.813m/svΣ,A=vr1,A+vr2,AvΣ,A=7.163m/svΣ,AB=7.163m/svΣ,B=7.163m/svΣ,C=7.163m/sGB/ZXXXX—XXXX/ISO/TR6336-3vΣ,DE=7.163m/svΣ,DE=7.163m/sRa=0.5(Ra1+Ra2)5.3.3.4潤(rùn)滑數(shù)據(jù)計(jì)算XLα38=2.657.10-8η8XS40+0.75.3.3.5材料參數(shù)計(jì)算εγ<2時(shí)，KBγ=1.0εεmax=ε1=ε2無(wú)充分的齒廓修形（方法B）時(shí)，XCAGM6.αθM.Er5.3.3.6本體溫度下動(dòng)力黏度計(jì)算ηθM=10?6.vθM.PθM5.3.3.7速度參數(shù)計(jì)算vΣ,E=7.163m/sRa=0.8μmα38=2.05×10-8m2/NXR=1.023μm=0.067H=0.206vvθM=7.929mm2/sPθM=811.9kg/m3ηθM=6.437.10?3Ns/m2GB/ZXXXX—XXXX/ISO/TR6336-3UAB=7.319×10?12UD=6.182×10?125.3.3.8載荷參數(shù)計(jì)算WAB=2.913×10?4WD=4.976×10?4θf(wàn)l,ABθf(wàn)l,D=119.2θB,AB=296.9。CθB,D=245.8SGF,AB=0.049SGF,D=0.102BU=6.182×10?12BUDE=7.319×10?12WB=4.976×10?4WDEθf(wàn)l,B=119.2θf(wàn)l,DEθB,B=245.8θB,DE=296.9。CSGF,B=0.102SGF,DE=0.049AU=1.086×10?11AUC=5.956×10?12UE=1.086×10?12WA=2.913×10?4WC=4.794×10?4WE=2.913×10?4θf(wàn)l,A=225.7θf(wàn)l,C=0θf(wàn)l,E=225.7θB,A=352.3θB,C=126.6θB,E=352.3SGF,A=0.024SGF,C=1.000GF,ES=0.024GF,E5.3.3.10潤(rùn)滑劑油膜厚度計(jì)算hA=1600.Pn,A.G.6.U.7.WA-0.13.S.,5.3.3.11潤(rùn)滑劑膜厚比計(jì)算λGF,A=0.060λGF,AB=0.080λGF,B=0.092λGF,C=0.154λGF,D=0.092λGF,DE=0.080λGF,E=0.006λGF,min=λGF,A=λGF,EGB/ZXXXX—XXXX/ISO/TR6336-35.3.3.12微點(diǎn)蝕安全系數(shù)計(jì)算點(diǎn)ABCDEλGFPSλ力往往受添加劑的影響更大。由于添加劑的種類在很大程度上取決于溫度，因此，標(biāo)準(zhǔn)ISO/TS6336輪）和5μm（大齒輪）。圖3展示了算例3中小齒輪和大齒輪微點(diǎn)蝕的觀察位置和嚴(yán)GB/ZXXXX—XXXX/ISO/TR6336-3注：根據(jù)方法B計(jì)算，不考慮修形。符號(hào)幾何z———x°β°bax da A—44Ra——EN/mm2ν λMρMkg/m3—KA—Kv—Kγ—KHα—KHβ T1n1劑GB/ZXXXX—XXXX/ISO/TR6336-3ρ15kg/m3 λGFP—mttd2=z2.mtd2αt=21.122。db1=d1cosαtdb1=147.023mmdb22cosαtdb2=151.479mmdw1=157.612mmdw2w1dw2=162.388mmβb=arcsin(sinβ.cosαn)βbpett.π.cosαtpet=13.997mmε1ε2εαεβ=b.sinβmn.πεβ=1.043εγ=εα+εβεγ=2.588?a.sinαwtgα=21.623mmGB/ZXXXX—XXXX/ISO/TR6336-3gA=0mmAB2g=gαAB2gB=gα?petgD=petgE=gαdAB1dD1=160.002mmdAB2dD2=160.216mmpn,AB=14.173mmpn,DdB1=155.417mmdDE1dB2=164.807mmdDE2pn,B=14.945mmpn,DE=14.403mmgA=0mmgAB=3.813mmgBgC=10.832mmgD=13.997mmgDEgE=21.623mmdA1=151.162mmdC1=157.612mmdE1=166.610mmdA2=171.390mmdC2=162.388mmdE2=155.916mmpn,A=12.869mmpn,C=15.183mmpn,E=13.225mmEr=226374N/mm2 5.4.3.3工作條件計(jì)算nT1td10.5KtGB/ZXXXX—XXXX/ISO/TR6336-3注：斜齒輪,0.8<εβ<1.2,無(wú)齒廓修形(見GB/Z3480.22—202XA(εβXABεβεβεβXDεβεβεβ(ε0.8XABEεβbut,DEεβXA=XA（77）XA=0.673XAB=0.589XB=0.786XC=0.786XD=0.786XDE=0.589XE=0.673N/mm2E（25）pH,A,B=1527N/mm2pH,AB,B=1361N/mm2pH,B,B=1531N/mm2pH,C,B=1519N/mm2pH,D,B=1525N/mm2pH,DE,B=1350N/mm2pH,E,B=1506N/mm2.KA.Kγ.Kv.KHα.KHβ（24）pdyn,A,B=1641N/mm2pdyn,AB,B=1463N/mm2pdyn,B,B=1645N/mm2pdyn,C,B=1632N/mm2pdyn,D,B=1639N/mm2pdyn,DE,B=1451N/mm2pdyn,E,B=1619N/mm2vg,Avg,AB=?4.345m/svg,D=1.959m/s?1.984m/svg,DE=4.320m/svg,Avg,Cvg,E=?6.706m/s=0m/s=6.681m/sGB/ZXXXX—XXXX/ISO/TR6336-3vΣ,A=vr1,A?vr2,A（13）vΣ,A=17.743m/svΣ,AB=17.778m/svΣ,B=17.813m/svΣ,C=17.843m/svΣ,D=17.872m/svΣ,DE=17.907m/svΣ,E=17.942m/sRa=0.5.(Ra1+Ra2)（3）Ra=0.45μm5.4.3.4潤(rùn)滑劑數(shù)據(jù)計(jì)算α38=2.657.10?8.η8.1348（9）α38=1.88.10?8m2/NXS=1.2forinjectionlubrication5.4.3.5材料參數(shù)計(jì)算XR=2.2.0.25（86）XR=0.913KBγ=1.238for2<εγ<3.5.XR.XL（85）μm=0.054εV未經(jīng)過(guò)齒廓修形（方法B）時(shí)，XCA=1.0GM6.αθM.Er（83）GM=2388.25.4.3.6本體溫度下動(dòng)力黏度計(jì)算+273)+B（17）vθM=3.044mm2/s（20）PθM=801.0kg/m3GB/ZXXXX—XXXX/ISO/TR6336-3ηθM=10?6.vθM.PθMUAB=6.754×10?12UD=6.394×10?125.4.3.8載荷參數(shù)計(jì)算WABWD=3.295×10?45.4.3.9滑動(dòng)參數(shù)計(jì)算θf(wàn)l,ABθf(wàn)l,DθB,A=θM+θf(wàn)l,AθB,AB=260.5。CθB,D=210.1SGF,AB=0.160SGF,D=0.3325.4.3.10潤(rùn)滑劑油膜厚度計(jì)算hA=1600.Pn,A.G.6.U.7.WA-0.13.S.,5.4.3.11潤(rùn)滑劑膜厚比計(jì)算BU=6.418×10?12BUDE=6.695×10?12BW=3.318×10?4BWDEθf(wàn)l,Bθf(wàn)l,DEθB,B=211.0θB,DE=259.0。CSGF,B=0.327SGF,DE=0.163ηθM=2.438.10?3Ns/m2AU=7.424.10?12AUC=6.328×10?12EU=7.305×10?12EWA=3.302×10?4WC=3.266×10?4WE=3.213×10?4θf(wàn)l,A=196.6θf(wàn)l,C=0θf(wàn)l,E=193.4θB,A=346.0θB,C=149.3θB,E=342.7SGF,A=0.054SGF,C=1.000GF,ES=0.056GF,EGB/ZXXXX—XXXX/ISO/TR6336-3（2）λGF,A=0.117λGF,AB=0.159λGF,B=0.183λGF,C=0.236λGF,D=0.185λGF,DE=0.161λGF,E=0.121λGF,min=λGF,A=λGF,E5.4.3.12微點(diǎn)蝕安全系數(shù)計(jì)算（1）ABCDEλGFP表13壓力分布矩陣pH,Y,A（N/mm2）ABCDE根據(jù)方法A計(jì)算的膜厚比結(jié)果如表14所示，表中加粗AGB/ZXXXX—XXXX/ISO/TR6336-3BCDE使用表14中潤(rùn)滑油膜厚比的最小值，按照方法A計(jì)算微點(diǎn)S=λGF,minS=1.124λλGFPλ注：在上述示例3中，方法A和方法B之間計(jì)算出的安全系數(shù)差異是由方法B的簡(jiǎn)化分析（與輪廓修形相關(guān)）導(dǎo)致的。在示例3中，對(duì)于特定的負(fù)載，未計(jì)算出最佳的修緣量。因此，方法B的計(jì)算過(guò)程中，其接觸條件不考慮5.5算例4增速器齒輪）和3μm（大齒輪）。圖4展示了示例4中小齒輪和大齒輪微點(diǎn)蝕的觀察位置和嚴(yán)注：算例4中，大齒輪是驅(qū)動(dòng)齒輪，因此算例中輪齒開始接觸點(diǎn)在大齒輪齒根部，點(diǎn)E。a）小齒輪注：根據(jù)方法B計(jì)算，未考慮修形。GB/ZXXXX—XXXX/ISO/TR6336-3符號(hào)輪幾何z———x°β°bax—4da——symmetricalendreliefA—55Ra EN/mm2ν λMρMkg/m3—KA Kv—Kγ—KHα—KHβ—T1n1劑GB/ZXXXX—XXXX/ISO/TR6336-3ρ15kg/m3————λGFP—a依據(jù)方法B計(jì)算：修形不夠充分；依據(jù)方法A計(jì)算：壓力分布計(jì)算注：參照標(biāo)準(zhǔn)ISO/TS6336-22:2018，5.4，采用試驗(yàn)測(cè)試的油溫θoilRef進(jìn)行計(jì)算.微點(diǎn)一般地，在90C油溫下進(jìn)行FZGZG-FVA微點(diǎn)蝕試驗(yàn)。石油供應(yīng)商提mttd2=z2.mtd2αt=20.603。db1=d1cosαtdb1=162.428mmdb22cosαtdb2=518.223mmdw1=176.114mmdw2w1dw2=561.886mmβb=arcsin(sinβ.cosαn)βbpet=24.299mmε1ε2GB/ZXXXX—XXXX/ISO/TR6336-31(1().|?44,?44εγ=εα+εβ?a?a.sinαwtd12α嚙合線上基本點(diǎn)(A,AB,B,C,gA=0mmgB=gα?petgD=petgE=gαdAB1dD1=181.821mmdAB2dD2=566.757mmpn,A=pt,Acosβbpn,AB=19.919mmpn,D=29.993mmdB1=172.914mmdDE1dB2=565.333mmdDE2pn,B=24.164mmpn,DE=32.561mmεαεβεγgα=37.395mmgA=0mmgAB=6.548mmgB=13.096mmgC=17.479mmgD=24.299mmgDEgE=37.395mmdA1=165.768mmdC1=176.114m