JB/T 5821-1991 铅酸蓄电池用普通螺纹公差与配

华人民共和国机械行业标准JB5821—91铅酸蓄电池用普通螺纹公差与配合1991-10-17发布1992-10-01实施中华人民共和国机械电子工业部发布中华人民共和国机械行业标准JB5821-91铅酸蓄电池用普通螺纹公差与配合1主题内容与适用范围本标准规定了铅酸蓄电池用普通螺纹公差与配合。本标准适用于用硬质橡胶、塑料、铅及铅合金制成的普通螺纹。2引用标准GB192普通螺纹基本牙型GB193普通螺纹直径与螺距系列GB196普通螺纹基本尺寸GB197普通螺纹公差与配合3基本牙型3.1螺纹的基本牙型符合GB192第1章规定。3.2螺纹的直径与螺距系列见表1。表1n公称尺寸3468101214161820222427粗牙0.50.711.251.51.75222.52.52.533螺距细牙0.5|0.7511.251.51.51.522公称尺寸30364210010125粗牙36螺距P细牙232|234螺纹的基本尺寸螺纹的基本尺寸见表25螺纹的公差与极限偏差5.1按GB197第1.2条和1.3条,规定了内螺纹基本偏差代号为H,外螺纹基本偏差代号为g,内螺纹公差等级为7级,外螺纹公差等级为8级,公差带代号即为H,8g52螺纹顶径和中径的公差见表3、表4。5.3偏差代号偏差代号符合GB197中规定即:内螺纹各直径上偏差代号为Es,下偏差代号为Ei。外螺纹各直径上偏差代号为es,下偏差代号为54极限偏差见表5。机械电子工业部1991-10—17批准1992-10-01实施J5821-91表2mm公称尺寸3681012螺距P0.0.70.510.75l.251.51.251.751.5中径D或d2.6753.54536755.3505.5137.1887.3509.0259.188|10.363111.026小径D或d2.45932423.4594.9175.1886.6476.9178.3768.64710.10610.376公称尺寸1618202224螺距P1.521.52.522.53中径D或d1270113.0264.70115.02616.37616.701837687011837620.7012.0512.701小径D或d18351237638354376529415.83517.29417.29417.29419.83520.75221.835公称尺寸27304856螺距P33.535.54中径D或d25.051125.70127.72728.701340214.05139.07740.051.752145.40255.42853.408小径D或23.75224.83526.2112.83531.67012.75237.12938752425874367050.04651.670公称尺寸647280100110125螺距P62223中径D或d60.10362.70170.70178.70183.70198.701108.051123.051小径D或以57.5056183569.8357.83582.83597.835106:732121.752表3mm内螺纹小径公差LD1外螺纹大径公差ld标准公差内螺纹小径公差标准公差附加值外螺纹大径公差螺距PTDI附加值△LD,螺距PTd617级D1=TD1+△18级dd Ta+o0.50.180.230.50.10.220.700,220.270.700.220.270.750.240.750.230.280.300.400.280.431.250.360.461.250.340.150.491.50.380、481.50.380.531.750.430.631.750.43,00.480.200.682,00,450.702.50.560.762.50.530.780.630.933.00.600.953.50.710.301.013.50.670.35l.024.00.751.050,751.10JB5821—91续表3m内螺纹小径公差D外螺纹大径公差ld标准公差内螺纹小径公差标准公差附加值外螺纹大径公差螺距PTD,附加值△ID螺距FD1=TD1+△8级+δ14,51.250.801.250.901,3050.851.300.400.450.955.50.901.351.01.400.951.40表4内螺纹直径公差D2外螺纹中径公差td2公称直径螺标准公差内螺纹中径公差标准公差附加值公称直径螺距附加外螺纹中径公差TDEtal7级D2=TD2+△8级l2=d2+00.50.130.180.50.100.150.70.150.200.130.183、A、6urfi0.050.200.750.140.190.190.240.180.230.290.180.288、101.250.200.l00.3l8、101.250.190.220.32l.50.2l0.310.240.410.220.3912、14、161.750.25170.4212、14、15|1.750,240.170.4L20.2720250.420.270,4720.250.2018、20、220.280.482.50.270.470.270.5120.270.5230.340.250.5924、27、3030.300.250.553.50.360.613.50.3430.360.6830.300.6240,380.7040.3636、42、36、424.50.400.320.724.50.380.3248、5648、560.430.750.400.450.770.430.75JB5821-91续表4mm内螺纹中径公差D2外螺纹中径公差d2公称直径螺距TD2的m内螺纹中径公差标准公差公称直径螺距|标准公差tDp2/附加值/外螺纹中径公差td7级D2=TD2+△28级ld2= Td2+ o26472、8020.300.170.4764、72、800.170.4785、1000.480.440.9285、1000.4800.92110.1250.370.200.57110、12530.350.300.65表5n]m内螺纹公差带TH外螺纹公差带8g公称直径D、d螺距中·径小径D1中径d2大径dEIESEIes0.50.18+0.2300.02-0.17-0.02-0.240.70.2000.2700.020.200.02-0.290.750.200.290.020.21-0.020.300.240十0.400.030.260.0346+0.290+0.4000.030.310.030.461.25+0.300+0.4600.030.32-0.030.521.50.320+0.4800.030.340.03-0.581.50.41十0.480,03-0.42-0.030.5812、14、16l.750.420+0.630-0.03|-0.44-0.030.710.440+0.6800.040.450.040.740.470+0.6800.0449-0.040.7418、20、220.480.260.04-0.51-0.040.82+0.5101.6800.04一0.550.04一0.7424、27、30+0.590.9300.05-0.600.051.0+0.6100.0+0.610.93-0.05-0.一0.051.0+0.700十1.00.060.74-0.06-1.1636、42、48、564.5+0.7201.25一0.060.760.061.315+0.75013000.07-0.790,071.375.5+0.770+1.3500.070.820,081.4364、72、800.4700.6800.040.510.040.7485、1006+0.921.4000.080.900.881,48JB5821—91续表5nm内螺纹公差带7H外螺纹公差带8g公称直径D、4螺距P中径D2小径D1中径d2大径dESEIESEI110、1250.57+0.9300.50.700.051.006直径,螺距的选择及其标注6.I螺纹直径和螺距的选用在标准规定的范围内(表2)选用。6.2螺纹标记由螺纹代号、螺纹公差带代号组成,本标准规定了螺纹的中径和顶径公差带相同。标注时只标出7H或8g,用“-”将螺纹代号与公差代号分开。例如:M20-7H或M20×2-7H(内螺纹),M208g或M20×2-8g(外螺纹6.3本标准只规定内、外螺纹组合成7H/8g的配合,公差带代号标注在螺纹代号之后,例如:M20一7H/8g或M20×2-7H/8g。不论是螺纹还是内、外螺纹的组合,必须在图样技术要求栏目中注明“螺纹公差按JB5821-91执行”字样。7检测71量具分度值为0.01mm的千分尺(包括内径千分尺)。分度值为0.02mm的游标卡尺(简称卡尺)。60°螺纹样板测量螺纹中径用的量针(线)。72测量7.2.1螺距的测量用6α°螺纹样板,在螺纹旋入长度內螺纹被样板完全包容7.2.2螺纹顶径的测量先用卡尺测量,若该数接近极限偏差时再用千分尺测量。测量时在径向上测量3个部位,求其算术平均值。附加说明本标准由沈阳蓄电池研究所提出并归口。本标准由沈阳蓄电池研究所负责起草。本标准主要起草人吴申南、何次龙。