ICS21.040.01J04JB/T9193-1999搓(滚)制普通螺纹前的毛坯直径Thebardiametersforrollinggeneralpurposescrewthreads1999-06-24发布2000-01-01实施国家机械工业局发布I前言本标准是对JB/Z203—83《辗制螺纹毛坯直径》进行的修订。修订时,仅按有关规定作了编辑性修改,主要技术内容方面无改变。本标准自实施之日起代替JB/Z203—83。本标准由全国螺纹标准化技术委员会提出并归口。本标准起草单位:机械科学研究院。本标准主要起草人:李晓滨。JB/T9193-199911范围本标准规定了搓(滚)制普通螺纹前的毛坯直径尺寸与公差。本标准适用于加工材料为碳素钢的普通螺纹。普通螺纹应符合GB/T192、GB/T193和GB/T197的规定。2引用标准下列标准所包含的条文,通过在本标准中引用而构成为本标准的条文。本标准出版时,所示版本均为有效。所有标准都会被修订,使用本标准的各方应探讨使用下列标准最新版本的可能性。GB/T192—1981普通螺纹基本牙型GB/T193—1981普通螺纹直径与螺距系列(直径1~600mm)GB/T197—1981普通螺纹公差与配合(直径1~355mm)3毛坯直径计算式毛坯直径按式(1)及式(2)计算。毛坯直径公差带与螺纹中径公差带的相对位置见图1。d0min=d2min+0.32dT………………………………………(1)d0max=d2min+0.72dT………………………………………(2)式中:d0min——最小毛坯直径;d0max——最大毛坯直径;d2min——最小外螺纹中径;2dT——外螺纹中径公差。d2max—最大外螺纹中径图1毛坯直径的公差带位置国家机械工业局1999-06-24批准中华人民共和国机械行业标准搓(滚)制普通螺纹前的毛坯直径ThebardiametersforrollinggeneralpurposescrewthreadsJB/T9193-1999代替JB/Z203—832000-01-01实施JB/T9193-199924毛坯直径的极限尺寸对直径范围为1~39mm、公差等级为6级、基本偏差为h、g、f或e的普通螺纹,其搓(滚)丝前的毛坯直径极限尺寸见表1。对其他规格或公差带普通螺纹的毛坯直径,可按第3章所列公式计算。表1搓(滚)丝螺纹的毛坯直径mm公称直径螺距中径螺坯直径d0dPd2螺纹公差带d0maxd0min6e6f——6g0.8040.7830.250.8386h0.8220.8016e6f——6g0.8390.81910.200.8706h0.8560.8366e6f——6g1.0040.9830.251.0386h1.0221.0016e6f——6g1.0391.0191.20.201.0706h1.0561.0366e6f——6g1.3351.3100.351.3736h1.3541.3296e6f——6g1.4381.4181.60.201.4706h1.4551.4356e——6f1.6861.6596g1.7011.6740.401.7406h1.7201.6936e6f——6g1.8031.78120.251.8386h1.8211.799JB/T9193-19993表1(续)mm公称直径螺距中径螺坯直径d0dPd2螺纹公差带d0maxd0min6e——6f2.1522.1236g2.1672.1380.452.2086h2.1872.1586e——6f2.2202.1956g2.2352.2102.50.352.2736h2.2542.2296e——6f2.6172.5876g2.6332.6030.502.6756h2.6532.6236e——6f2.7192.6926g2.7342.70730.352.7736h2.7532.7266e3.4623.4266f3.4803.4446g3.4963.4600.73.5456h3.5183.4826e3.6033.5736f3.6173.5876g3.6333.60340.53.6756h3.6533.6236e4.3924.3546f4.4144.3766g4.4284.3900.84.4806h4.4524.4146e4.6034.5736f4.6174.5876g4.6334.60350.54.6756h4.6534.623JB/T9193-19994表1(续)mm公称直径螺距中径螺坯直径d0dPd2螺纹公差带d0maxd0min6e5.2565.2126f5.2765.2326g5.2905.24615.3506h5.3165.2726e5.4275.3876f5.4455.4056g5.4615.42160.755.5136h5.4835.4436e7.0907.0426f7.1117.0636g7.1257.0771.257.1886h7.1537.1056e7.2567.2126f7.2767.2326g7.2907.246817.3506h7.3167.2726e8.9198.8676f8.9418.8896g8.9548.9021.59.0266h8.9868.9346e9.0909.0426f9.1119.0636g9.1259.077101.259.1886h9.1539.1056e10.74710.6876f10.77010.7106g10.78410.7241.7510.8636h10.81810.7586e10.91710.8616f10.93910.8836g10.95210.896121.511.0266h10.98410.928JB/T9193-19995表1(续)mm公称直径螺距中径螺坯直径d0dPd2螺纹公差带d0maxd0min6e14.58214.5186f14.60114.5376g14.61514.551214.7016h14.65314.5896e14.91714.8616f14.93914.8836g14.95214.896161.515.0266h14.98414.9286e18.24518.1776f18.26718.1996g18.28318.2152.518.3766h18.32518.2576e18.91718.8616f18.93918.8836g18.95218.896201.519.0266h18.98418.9286e21.90621.8266f21.92821.8486g21.94321.863322.0516h21.99121.9116e22.91422.8546f22.93622.8766g22.94922.889241.523.0266h22.98122.9216e27.57327.4896f27.59327.5096g27.61027.5263.527.7276h27.66327.5796e28.91428.8546f28.93628.8766g28.94928.889301.529.0266h28.98128.921JB/T9193-19996表1(完)mm公称直径螺距中径螺坯直径d0dPd2螺纹公差带d0maxd0min6e33.24033.1506f33.26033.1706g33.27533.18543.4026h33.33533.2456e34.91434.8546f34.93634.8766g34.94934.889361.535.0266h34.98134.9216e36.24036.1506f36.26036.1706g36.27536.185436.4026h36.33536.2456e37.91437.8546f37.93637.8766g37.94937.889391.538.0266h37.98137.9215毛坯直径的修正与调整当螺纹的轴向长度小于2d时,螺纹的毛坯直径应增大0.1d~0.2d。螺纹材料较硬或较软时,应根据具体情况修正毛坯直径。JB/T9193-1999中华人民共和国机械行业标准搓(滚)制普通螺纹前的毛坯直径JB/T9193-1999*机械科学研究院出版发行机械科学研究院印刷(北京首体南路2号邮编100044)*开本880×12301/16印张3/4字数14,0001999年12月第一版1999年12月第一次印刷印数1-500定价10.00元编号99-701机械工业标准服务网: