世界建筑标准

WorldWideConstructionDivisionStandards世界建筑分支标准DTW788BushingDesignRecommendations轴套设计意见xAPPROVEDFORSUPPLIERDISTRIBUTIONINTERNALTODEEREONLY供应商分布批准，仅供DEERE内部使用Printedorsavedcopiesareconsideredtobeuncontrolled.打印件和复印件同样受控。Scope:范围Thisspecificationcoversrequirementsforbushingdesigns.该标准适用于轴套设计要求1.BushingClasses衬套等级Therewillbetwoclassesofbushings:衬套有两个等级1.1.ClassABushing:Heattreated,precisionhardgroundoutsideandinsidediameters.“A”类衬套：热处理，精密磨加工和内直径处理。1.2.ClassBBushing:Heattreated,precisionhardgroundoutsidediameterandboredinsidediameter.“B”类衬套：热处理，精密磨加工外径和钻孔内径。2.Materials材质Lowcarbonsteelsarerequired.Anysuchsteelselectedmustbeabletomeettheheattreatmentspecificationgivenonthepartprint,wheninspectedaccordingtoRES10410.ExamplesofheattreatmentspecificationsaregiveninSection4.1below.必需是低碳钢。此类钢的选择必须能够满足热处理规范部关于零件打字要求，检查时根据RES10410。热处理规范的例子在下面的第4.1节中给出。Thicker-walledbushingsmayrequiresteelchemistrygradeswithincreasedheattreatresponse.Onepossiblesetoflowcarbonsteels,inorderofincreasingheattreatresponse,includesJDM1018,JDM1026,JDM1117,DINST52.3,JDM15B21andJDM8620.JDM8620isrequiredforbushingshavingwallthicknessof10mmorlarger.厚壁轴套，随着热处理的不同反应，可能要求化学等级检测。低碳钢的一个可能的反应等级就是，依次为：JDM1018,JDM1026,JDM1117,DINST52.3,JDM15B21andJDM8620。JDM8620要求10毫米或更大的轴套厚壁。Anyhighmanganese(over1.00%),borontreated,oralloysteelselectedmustconformtoJDMA0qualitylevelQL-2.Resulfurizedsteels(suchasJDM1117)andplaincarbonsteels(suchasJDM1018andJDM1026)areacceptedasJDMA0qualitylevelQL-1.任何高锰（1%以上），硼处理，或合金钢的选择必须符合JDMA0质量水平QL-2。硫化钢（如JDM1117）和普通碳素钢（如JDM1018andJDM1026）是公认的JDMA0质量水平QL-1。Whenbushingsaremanufacturedfromsteeltubing,JDMA25BColdDrawnSeamlessMechanicalSteelTubingorJDMA24B4Electric-ResistanceWeldedDOMMechanicalSteelTubingarethepreferredtubingforms.JDMA27AorJDMA27BColdDrawnButtWeldedMechanicalSteelTubingmayalsobeused.Whenbushingsaremanufacturedfromsteelbarmaterial,hotrolledorcolddrawnbarsmaybeused.当轴套是由钢管制成，JDMA25B冷拔无缝机械钢管或JDMA24B4电阻焊DOM机械钢管是首选的管材形式。JDMA27AorJDMA27B冷拔钢管在焊接机械中也可使用。当轴套是由钢筋材料制造，热轧或冷拔棒也可采用。3.ToleranceandFinishes公差和表面处理3.1ClassABushingsA类轴套标准3.1.1OutsideDiameter:Toleranceshallbe±0,013mm[±.0005IN.]withasurfacefinishof1.6μm[63μIN.]maximum.外径：公差应为0013mm[0005英寸]，最大表面光洁度为1.6μm[63μm].。3.1.2InsideDiameter:Toleranceshallbe±0,025mm[±.001IN.]withasurfacefinishof1.6μm[63μIN.]maximum.内径：公差应为0025mm[001英寸]，表面光洁度为1.6μm[63μm]最大值。3.1.3Concentricity:I.D.andO.D.shallbeconcentric(totalindicatorreading)asdeterminedbythefollowingformula:同心度：内径和外径应同心（总读数）由以下公式计算：.01xlengthofbushingwithaminimumvalueof0,08mm[.003IN.]01x轴套长度，最小值0,08毫米003。IN]3.2ClassBBushingsB类轴套3.2.1OutsideDiameter:Toleranceshallbe±0,013mm[±.0005IN.]withasurfacefinishof1.6μm[63μIN.]maximum.外径：公差应为0013mm[0005英寸]，最大表面光洁度为1.6μm[63μm].。3.2.2InsideDiameter:Toleranceshallbe±0,13mm[±.005IN.]withasurfacefinishof3.75μm[150μIN.]maximum.内径公差应±0,13毫米[±。005IN]以3.75米150μμ[中]最大的表面光洁度。3.2.3Concentricity:I.D.andO.D.shallbeconcentricwithin0,25mm[.010IN.]totalindicatorreading.同心度：内径和外径应在0.25毫米[010IN]总读数。4.GeneralRequirements总体要求4.1HeatTreatment热处理4.1.1ClassAHeattreatmentperJDV2热处理根据JDV2HT10T(InspectperRES10410)HT10T（检验根据RES10410）0.89+0.26/-0.13Casedepth热处理深度0.89+0.26/-0.130.50Minimumcaseonfinishedmachinesurfaces机加工表面处理最低深度0.5079HRAmin最低79HRA4.1.2ClassA4.1.2等级A最低79HRAHeattreatmentperJDV2热处理根据JDV2HT10T(InspectperRES10410)HT10T（检验根据RES10410）1.40+0.26/0.13Casedepth热处理深度1.40+0.26/0.131.02Minimumcaseonfinishedmachinesurfaces机加工表面处理最低深度1.0279HRAmin最低79HRA4.1.3ClassBHeattreatmentperJDV2热处理根据JDV2HT10T(InspectperRES10410)HT10T（检验根据RES10410）0.64+0.26/-0.13Casedepth热处理深度0.64+0.26/-0.130.25Minimumcaseonfinishedmachinesurfaces机加工表面处理最低深度0.2588HR15Nmin最低88HR15N4.1.4ClassBHeattreatmentperJDV2热处理根据JDV2HT10T(InspectperRES10410)HT10T（检验根据RES10410）0.89+0.26/-0.13Casedepth热处理深度0.89+0.26/-0.130.50Minimumcaseonfinishedmachinesurfaces机加工表面处理最低深度0.2579HRAmin最低79HRA4.2.LengthTolerance:Allbushingsmanufacturedperthisspecificationshallhavealengthtoleranceof±0,5mm[±.020IN.]长度公差：所有轴套生产都根据该规范，应该有±0,5毫米[±长度公差。020。]4.3.Chamfers:AllbushingsmanufacturedperthisspecificationshallbechamferedontheO.D.15°fromthecenterlinex1.5mm[0.6IN.]longandI.D.15°-45°fromthecenterlinex1,5mm[.06IN.]long.倒角：所有轴套生产都根据该规范，倒角从中心线×1.5毫米[0.6]长，对应外径15°处，倒角从中心线×1.5毫米[0.6]长，对应的内径15。°-45°处。4.4Burrs:Allbushingsmanufacturedperthisspecificationshallbefreefromburrsandsharpedges.毛刺：所有轴套生产都根据该规范，应无毛刺和锐边。4.5Features:Featuressuchasgrooves,shouldersandtheirlocationsmustbeindicatedonthedrawing.特点：如槽，轴肩和他们的位置，必须在图纸上标明。