JBT 8825.1-1998惠氏螺纹丝锥

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ICS25.100.50J41JB/T8825.1-1998惠氏螺纹丝锥Tapsforwhitworththreads1998-12-29发布1999-07-01实施国家机械工业局发布前言本标准是参照国际标准ISO529∶1993《短型手用和机用丝锥》第4部分的有关规定制订的,型式、尺寸与国际标准相同。本标准于1998年12月29日首次发布。本标准由全国刀具标准化技术委员会提出并归口。本标准主要起草单位:上海刃具厂。JB/T8825.1-199811范围本标准规定了惠氏螺纹丝锥(以下简称丝锥)的型式、尺寸和标记等的基本要求。本标准适用于加工螺纹代号为1/8~4惠氏螺纹的丝锥。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。JB/T8825.2—1998惠氏螺纹丝锥螺纹公差JB/T8825.3—1998惠氏螺纹丝锥技术条件3型式和尺寸3.1粗柄带颈丝锥型式按图1所示,尺寸在表1、表2中给出。图1表1mm方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLl1al21/8–40BSW403.1750.6353.15114872.5053/16–24BSW244.7621.0585.00165894.0071/4–20BSW206.3501.2706.301966115.0085/16–18BSW187.9381.4118.002272136.3093/8–16BSW169.5251.58810.002480158.0011注:无空刀槽时螺纹部分长度尺寸应为21ll+。表2mm国家机械工业局1998-12-29批准中华人民共和国机械行业标准惠氏螺纹丝锥TapsforwhitworththreadsJB/T8825.1-19981999-07-01实施JB/T8825.1-19982方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLl1al23/16–32BSF324.7620.7945.0016584.007/32–28BSF285.5560.9075.60176294.5071/4–26BSF6.3506.305.009/32–26BSF267.1440.9777.101966115.6085/16–22BSF227.9381.1548.002272136.3093/8–20BSF209.5251.27010.002480156.0011注:无空刀槽时螺纹部分长度尺寸应为21ll+。3.2细柄丝锥型式按图2所示,尺寸在表3、表4中给出。图2表3mm方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLal11/8–40BSW403.1750.6352.2411481.8043/16–24BSW244.7621.0583.5516582.8051/4–20BSW206.3501.2704.5019663.5565/16–18BSW187.9381.4116.3022725.003/8–16BSW169.5251.5887.1024805.6087/16–14BSW1411.1121.8148.0025856.3091/2–12BSW12.7009.0029897.10109/16–12BSW1214.2882.11711.2030959.0012JB/T8825.1-19983表3(完)mm方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLal15/8–11BSW15.87512.503210210.00131611–11BSW1117.4622.3093/4–10BSW1019.0502.54014.003711211.20147/8–9BSW922.2252.82216.003811812.50161–8BSW825.4003.17518.004513014.0018181–7BSW28.57520.004813816.0020411–7BSW731.7503.62922.405115118.0022211–6BSW638.1004.23328.006017022.4026431–5BSW544.4505.08031.506718725.00282–421BSW4.550.8005.64435.507020028.0031412–4BSW57.15076221212–4BSW463.5006.35040.0022431.5034432–213BSW69.85045.007923435.50383–213BSW3.576.2007.25783258413–413BSW82.550213–413BSW3.2588.9007.81550.008626140.0042433–3BSW95.2504–3BSW3101.6008.46756.008927945.0046表4mm方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLal13/16–32BSF324.7620.7943.5516582.8057/32–28BSF285.5560.9074.0017623.151/4–26BSF6.3504.503.5569/32–26BSF267.1440.9775.6019664.5075/16–22BSF227.9381.1546.3022725.003/8–20BSF209.5251.2707.1024805.6087/16–18BSF1811.1121.4118.0025856.3091/2–16BSF12.7009.0029897.10109/16–16BSF1614.2881.58811.2030959.0012JB/T8825.1-19984表4(完)mm方头螺纹代号每25.4mm上牙数公称直径d螺距Pd1lLal15/8–14BSF15.87512.503210210.00131611–14BSF1417.4621.8143/4–12BSF1219.0502.11714.003711211.20147/8–11BSF1122.2252.30916.003811812.50161–10BSF1025.4002.54018.004513014.0018811–9BSF28.57520.004813816.0020411–9BSF931.7502.82222.405115118.0022831–8BSF34.92525.005716220.0024211–8BSF38.100851–8BSF841.2753.17528.006017022.4026431–7BSF44.45031.506718725282–7BSF750.8003.62935.50702002831412–6BSF57.15076221212–6BSF63.50040.0022431.5034432–6BSF669.8504.23345.007923435.50383–5BSF76.20083258413–5BSF582.5505.080213–421BSF88.90050.00862614042433–214BSF95.2504–214BSF4.5101.6005.64456.008927945463.3单支和成组丝锥适用范围、主偏角、切削锥长度推荐在表5中给出。表5分类适用范围mm名称主偏角Κr切削锥长度l5mm初锥4°8P中锥8°4P单支和成组(等径)丝锥P≤2.54底锥16°2P第一粗锥5°30′6P第二粗锥8°4P成组(不等径)丝锥P>2.54精锥16°2PJB/T8825.1-199853.4丝锥公称切削角度,在径向平面内测量,推荐如下:a)前角γp为8°~10°;b)后角αp4°~6°。3.5标记示例右旋粗牙惠氏螺纹,螺纹代号为1/8–40BSW,每25.4mm上为40牙,2级公差带,单支初锥(底锥)磨制丝锥:惠氏螺纹磨制丝锥,初(底)1/8–40BSW–2JB/T8825.1—1998右旋细牙惠氏螺纹,螺纹代号为5/16–22BSF,每25.4mm上为22牙,两支(初锥和底锥)一组等径切制丝锥:惠氏螺纹切制丝锥,初(底)5/16–22BSFJB/T8825.1—1998右旋粗牙惠氏螺纹,螺纹代号为3/4–10BSW,每25.4mm上为10牙,3级公差带,三支一组不等径磨制丝锥:惠氏螺纹磨制丝锥(不等径)3–3/4–10BSW–3JB/T8825.1—1998左旋粗牙惠氏螺纹,螺纹代号为1–8BSW,每25.4mm上为8牙,单支中锥切制丝锥:惠氏螺纹切制丝锥1–8BSWLJB/T8825.1—19984螺纹公差丝锥螺纹公差按JB/T8825.2。5技术条件丝锥技术条件按JB/T8825.3。JB/T8825.1-1998中华人民共和国机械行业标准惠氏螺纹丝锥JB/T8825.1-1998*机械工业部机械标准化研究所出版发行机械工业部机械标准化研究所印刷(北京首体南路2号邮编100044)*开本880×12301/16印张1/2字数12,0001999年12月第一版1999年2月第一次印刷印数1-500定价5.00元编号98-223

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