(高清版)GB∕T 37462-2019 30°楔形防松螺紋

ICS21.040.30Lockingthreadswith30degree國家市場監(jiān)督管理總局中國國家標(biāo)準(zhǔn)化管理委員會(huì)IGB/T37462—2019本標(biāo)準(zhǔn)按照GB/T1.1—2009給出的規(guī)則起草。請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機(jī)構(gòu)不承擔(dān)識(shí)別這些專利的責(zé)任。本標(biāo)準(zhǔn)由全國螺紋標(biāo)準(zhǔn)化技術(shù)委員會(huì)(SAC/TC108)提出并歸口。本標(biāo)準(zhǔn)起草單位：上海施必牢機(jī)械設(shè)備有限公司、中機(jī)生產(chǎn)力促進(jìn)中心。1GB/T37462—2019本標(biāo)準(zhǔn)適用于防松緊固螺紋聯(lián)接。2規(guī)范性引用文件下列文件對于本文件的應(yīng)用是必不可少的。凡是注日期的引用文件，僅注日期的版本適用于本文GB/T192普通螺紋基本牙型GB/T196普通螺紋基本尺寸GB/T197普通螺紋公差GB/T3934普通螺紋量規(guī)技術(shù)條件GB/T14791螺紋術(shù)語GJB3.1AMJ螺紋第1部分：通用要求HB4228MJ螺紋環(huán)規(guī)(MJ1.6×0.35～MJ39×2)3術(shù)語和代號(hào)GB/T14791界定的術(shù)語和定義適用于本文件。d———外螺紋大徑d?p——塞規(guī)螺紋中徑d?-—外螺紋小徑dsp——塞規(guī)螺紋(牙頂)斜面小徑d?t——絲錐螺紋(牙頂)斜面小徑dp——塞規(guī)螺紋平頂大徑d,——絲錐螺紋(牙頂)斜面大徑D—-—內(nèi)螺紋(牙底)斜面大徑D?——內(nèi)螺紋牙頂小徑2GB/T37462—2019D?——內(nèi)螺紋中徑D?———內(nèi)螺紋(牙底)斜面小徑P———螺距Tp——內(nèi)螺紋涂鍍前的斜面大徑和斜面小徑公差以及中徑公差Tp?——內(nèi)螺紋涂鍍前的牙頂小徑公差Tdp——塞規(guī)螺紋直徑公差4牙型30°楔形防松內(nèi)螺紋的牙型應(yīng)符合圖1的規(guī)定(粗實(shí)線)。外螺紋有普通螺紋(M)和MJ螺紋兩種，其牙型應(yīng)分別符合GB/T192和GJB3.1A的規(guī)定。5公差和極限尺寸30°楔形防松螺紋有兩種配合公差：精密級(jí)(4H/4h)和中等級(jí)(30°楔形防松內(nèi)螺紋斜面大徑和斜面小徑與其中徑具有相同的公差值(4H或6H)。30°楔形防松內(nèi)螺紋公差帶位置見圖2(剖面線部分)。精密級(jí)和中等級(jí)內(nèi)螺紋涂鍍前的公差和直徑極限尺寸應(yīng)分別符合表1和表2的規(guī)定。表1和表2內(nèi)的斜面大徑和斜面小徑數(shù)值是牙底斜面與牙側(cè)延長相交所形成的理論直徑值。本標(biāo)準(zhǔn)不規(guī)定涂鍍后內(nèi)螺紋的直徑極限尺寸及其檢驗(yàn)方法。M外螺紋的基本尺寸和公差(4h和6g)應(yīng)分別符合GB/T196和GB/T197的規(guī)定。MJ外螺紋的基本尺寸和公差(4h和6g)應(yīng)符合GJB3.1A的規(guī)定。注：在用戶允許條件下，內(nèi)螺紋斜面小徑的最小值可以小于表1和表2的規(guī)定下限。3GB/T37462—2019P內(nèi)螺紋表1精密級(jí)(4H)內(nèi)螺紋的涂鍍前公差和直徑極限尺寸單位為毫米螺紋規(guī)格斜面大徑D斜面小徑D?牙頂小徑D?斜面大徑和斜面小徑公差牙頂小徑公差公稱直徑螺距maxminmaxminmaxmin55.1545.0744.71]4.6314.4044.3040.0800.100616.1886.0935.6465.5515.2395.1190.0950.120717.1887.0936.6466.5516.2396.1190.0950.120818.1888.0937.6467.5517.2397.1190.0950.12088.2168.1167.5437.4437.0306.8940.1000.13619.6469.5519.2399.1190.0950.1209.5439.4439.0308.8940.1000.1369.4609.3488.8098.6570.1120.1520.1120.1360.1180.1520.1250.1700.1180.15220.1320.1890.1180.15220.1320.1890.1180.15220.1320.1890.1400.22420.25720.1390.1180.1524GB/T37462—2019表1(續(xù))單位為毫米螺紋規(guī)格斜面大徑D牙頂小徑D?斜面大徑和斜面小徑公差牙頂小徑公差Tpi公稱直徑螺距maxminmaxminmaxmin220.31820.1860.1320.18920.37220.2320.1400.22422.25722.13921.46021.34220.81520.6630.1180.152222.31822.18621.30021.16820.42420.2350.1320.18922.37222.23221.11720.97720.0000.1400.22424.26424.13923.46023.33522.82222.6700.1250.152224.32624.18623.30023.16022.43222.2430.1400.189324.44824.27822.95922.78921.56521.3130.1700.25227.26427.13926.46026.33525.82225.6700.1250.152227.32627.18626.30026.16025.43225.2430.1400.189327.44827.27825.95925.78924.56524.3130.1700.25230.26430.13929.46029.33528.82228.6700.1250.152230.32630.18629.30029.16028.43228.2430.1400.18930.50530.32528.76528.58527.15326.8690.1800.284233.32633.18632.30032.16031.43231.2430.1400.18933.50533.32531.76531.58530.15329.8690.1800.284236.32636.18635.30035.16034.43234.2430.1400.189336.44836.27834.95934.78933.56533.3130.1700.252436.56136.37134.59134.40132.70332.4030.1900.300239.32639.18638.30038.16037.43237.2430.1400.189339.44839.27837.95937.78936.56536.3130.1700.252439.56139.37137.59137.40135.70335.4030.1900.300注：螺紋牙側(cè)位置決定螺紋中徑的大??；螺紋中徑?jīng)Q定牙底斜面的長短。在30°牙側(cè)角和斜面傾角條件下，斜面大徑和斜面小徑與螺紋中徑的數(shù)學(xué)關(guān)系為D?=2D-D?—0.866025404P。表2中等級(jí)(6H)內(nèi)螺紋涂鍍前的公差和直徑極限尺寸單位為毫米螺紋規(guī)格斜面小徑D?牙頂小徑D?斜面大徑和斜面小徑公差牙頂小徑公差公稱直徑螺距maxminmaxminmaxmin9.4289.2488.8938.6570.1800.2360.1900.2360.2000.2655GB/T37462—2019表2(續(xù))單位為毫米螺紋規(guī)格斜面大徑D斜面小徑D;牙頂小徑D?斜面大徑和斜面小徑公差牙頂小徑公差公稱直徑螺距maxminmaxminmaxmin0.1900.23620.2120.3000.1900.23620.2120.3000.1900.23620.2120.3000.2240.35520.27920.0890.1900.236220.33020.1180.2120.30020.37220.1480.2240.35522.27922.08921.43221.24220.89920.6630.1900.236222.33022.11821.24421.03220.53520.2350.2120.30022.37222.14821.03320.80920.1310.2240.355224.34224.11823.24823.02422.54322.2430.2240.300324.44224.17722.85222.58721.71321.3130.2650.400227.34227.11826.24826.02425.54325.2430.2240.300327.44227.17725.85225.58724.71324.3130.2650.400230.34230.11829.24829.02428.54328.2430.2240.30030.48730.20728.62928.34927.31926.8690.2800.450233.34233.11832.24832.02431.54331.2430.2240.30033.48733.20731.62931.34930.31929.8690.2800.450336.44236.17734.85234.58733.71333.3130.2650.400436.53636.23634.43134.13132.87832.4030.3000.475339.44239.17737.85237.58736.71336.3130.2650.400439.53639.23637.43137.13135.87835.4030.3000.475中等級(jí)公差只用于螺距不小于1.5mm的螺紋規(guī)格。注：螺紋牙側(cè)位置決定螺紋中徑的大??；螺紋中徑?jīng)Q定牙底斜面的長短。在30°牙側(cè)角和斜面傾角條件下，斜面大徑和斜面小徑與螺紋中徑的數(shù)學(xué)關(guān)系為D?=2D—D?—0.866025404P。6螺紋配合位置要保證外螺紋牙頂與內(nèi)螺紋牙底斜面接觸配合，應(yīng)按圖3箭頭方向施加預(yù)緊力。6GB/T37462—20197.1基本標(biāo)記30°楔形防松內(nèi)螺紋的特征代號(hào)為“RL螺紋尺寸代號(hào)為“公稱直徑×螺距”,公稱直徑和螺距的數(shù)值單位為毫米。精密級(jí)內(nèi)螺紋的公差帶代號(hào)為4H;中等級(jí)內(nèi)螺紋的公差帶代號(hào)為6H。旋合長度分組方法應(yīng)符合GB/T197的規(guī)定。對短旋合長度組和長旋合長度組螺紋，應(yīng)在公差帶代號(hào)后分別標(biāo)注“S”和“L”代號(hào)。旋合長度代號(hào)與公差帶代號(hào)間用“-”號(hào)分開。中等旋合長度組螺紋不標(biāo)注旋合長度代號(hào)(N)。(RH)。示例1:RLM12×1.5-6H示例2:RLM12×1.5-4H-S示例3:RLM12×1.5-6H-LHM和MJ外螺紋的標(biāo)記方法應(yīng)分別符合GB/T197和GJB3.1A的規(guī)定。7.2螺紋副7GB/T37462—2019內(nèi)螺紋塞規(guī)的種類和螺紋尺寸參見附錄A。M和MJ外螺紋環(huán)規(guī)應(yīng)分別符合GB/T3934和HB4228的規(guī)定。可使用通用檢具檢驗(yàn)外螺紋大徑。9螺紋絲錐絲錐的螺紋尺寸參見附錄B。10小直徑楔形防松螺紋公稱直徑范圍為1mm～4mm的30°楔形防松螺紋應(yīng)符合附錄C的規(guī)定。8GB/T37462—2019(資料性附錄)A.1螺紋塞規(guī)螺紋通端塞規(guī)檢驗(yàn)內(nèi)螺紋涂鍍前的最小斜面大徑和最小牙槽寬度。螺紋止端塞規(guī)檢驗(yàn)內(nèi)螺紋涂鍍前的最大斜面大徑。通端和止端塞規(guī)的螺紋牙型分別見圖A.1和圖A.2(粗實(shí)線)。斜面傾角和螺紋牙側(cè)角為30°。螺紋塞規(guī)直徑公差帶位置見圖A.3。精密級(jí)和中等級(jí)螺紋塞規(guī)的公差和直徑極限尺寸分別參見表A.1和表A.2。螺紋塞規(guī)的累積螺距及斜面傾角和牙側(cè)角極限偏差參見表A.3。螺紋通端塞規(guī)應(yīng)旋合通過工件內(nèi)螺紋；螺紋止端塞規(guī)旋入工件內(nèi)螺紋的長度應(yīng)不超過兩個(gè)螺距。通端塞規(guī)Y圖A.1螺紋通端塞規(guī)的螺紋牙型c3…c3…ax二ammh內(nèi)螺紋止端寒規(guī)圖A.2螺紋止端塞規(guī)的螺紋牙型9GB/T37462—2019通規(guī)圖A.3塞規(guī)直徑的公差帶位置表A.1精密級(jí)(4H)螺紋塞規(guī)的公差和直徑極限尺寸單位為毫米螺紋規(guī)格量規(guī)直徑公差平頂大徑dp中徑d?p通規(guī)磨損下限平頂大徑dp斜面小徑ds(中徑d2p)止規(guī)磨損下限公稱直徑螺距minminminminminminmaxminmin5617181812222表A.1(續(xù))單位為毫米二螺紋規(guī)格量規(guī)直徑公差Tdp平頂大徑dp斜面小徑dsp中徑d?p通規(guī)磨損下限平頂大徑dp斜面小徑dsp(中徑d?p)止規(guī)磨損下限螺距maxmaxmaxmaXmax2232322234234螺紋規(guī)格量規(guī)直徑公差Tdp平頂大徑dp中徑d?p通規(guī)磨損下限平頂大徑dp斜面小徑ds(中徑d2p)止規(guī)磨損下限螺距222222323螺紋規(guī)格量規(guī)直徑公差Tdp平頂大徑dp斜面小徑dsp中徑d2p通規(guī)磨損下限平頂大徑dp斜面小徑dsp(中徑d?p)止規(guī)磨損下限公稱直徑螺距maxminmaxminmaxminminminmaxminmaxminmin223434注：螺紋中徑尺寸是塞規(guī)的驗(yàn)收參數(shù)。GB/T37462—2019表A.3螺紋塞規(guī)的累積螺距及斜面傾角和牙側(cè)角極限偏差極限偏差斜面傾角和牙側(cè)角極限偏差螺紋規(guī)格累積螺距極限偏差斜面傾角和牙側(cè)角極限偏差公稱直徑螺距公稱直徑螺距5士0.00561士0.004士152士107181士0.004士15士128士0.0042士0.00513士0.005士9士0.0042士0.004士133士0.005士9士0.004士0.005士0.0042士10士0.004士122士0.0042士0.0052士0.005士102士0.006324士0.0052士0.00532士0.005士104士0.006士8士0.005士10A.2光滑塞規(guī)用通用檢具或光滑塞規(guī)檢驗(yàn)內(nèi)螺紋涂鍍前的牙頂小徑。光滑塞規(guī)的直徑公差帶位置見圖A.3。光滑通端塞規(guī)應(yīng)通過工件內(nèi)螺紋；光滑止端塞規(guī)進(jìn)入工件內(nèi)螺紋的長度應(yīng)不超過一個(gè)螺距。GB/T37462—2019(資料性附錄)絲錐螺紋尺寸B.1絲錐螺紋牙型絲錐螺紋牙型見圖B.1。斜面傾角和螺紋牙側(cè)角為30°。B.2絲錐螺紋公差絲錐螺紋有兩種公差：H1和H2。H1和H2絲錐分別用于加工4H和6H內(nèi)螺紋。絲錐螺紋的公差帶位置見圖B.1。B.3絲錐螺紋的極限尺寸和極限偏差絲錐螺紋的直徑極限尺寸參見表B.1。絲錐螺紋的累積螺距和牙側(cè)角極限偏差參見表B.2。內(nèi)螺紋公差帶絲錐螺紋公差帶內(nèi)螺紋最小實(shí)體牙型內(nèi)螺紋最大實(shí)體牙型絲錐牙型公差帶圖B.1絲錐螺紋的牙型和公差帶位置GB/T37462—2019表B.1絲錐螺紋的直徑極限尺寸單位為毫米螺紋規(guī)格公稱直徑螺距斜面小徑ds中徑d?b斜面小徑ds中徑d?.bmaxminmaxminmaxminmaxminmaxminmaxmin55.1045.0844.6614.6414.8544.834616.1286.1055.5865.5635.8045.781717.1287.1056.5866.5636.8046.781818.1288.1057.5867.5637.8047.78188.1548.1297.4817.4567.7447.71919.5869.5639.8049.7819.4819.4569.7449.7199.3909.3629.6739.6459.3189.2909.7019.67322220.18420.15420.16420.134220.23720.20320.20320.16920.28620.25020.23820.20222.18422.15421.38721.35721.68221.65222.16422.13421.31721.28721.71221.682222.23722.20321.21921.18521.52321.48922.20322.16921.11721.08321.55721.52322.28622.25021.03120.99521.37621.34022.23822.20220.89920.86321.41221.37624.18724.15523.38323.35123.69223.660224.24024.20423.21423.17823.53423.49824.20824.17223.11423.07823.57023.534324.34224.29922.85322.81023.23323.19024.28324.24122.69322.65123.27523.23327.18727.15526.38326.35126.69226.660227.24027.20426.21426.17826.53426.49827.20827.17226.11426.07826.57026.534327.34227.29925.85325.81026.23326.19027.28327.24125.69325.65126.27526.23330.18730.15529.38329.35129.69229.660—————230.24030.20429.21429.17829.53429.49830.20830.17229.11429.07829.57029.53430.39230.34728.65228.60729.10129.05630.31930.27428.46128.41629.14629.101233.24033.20432.21432.17832.53432.49833.20833.17232.11432.07832.57032.534螺紋規(guī)格公稱直徑螺距斜面小徑ds中徑d?b斜面大徑da斜面小徑ds中徑d?tbminminminminminmin33.39233.34731.65231.60732.10132.05633.31933.27431.46131.41632.14632.101236.24036.20435.21435.17835.53435.498———336.34236.29934.85334.81035.23335.19036.28336.24134.69334.65135.27535.233436.44236.39534.47234.42534.94834.90136.35436.30734.24934.20234.99534.948239.24039.20438.21438.17838.53438.498—————339.34239.29937.85337.81038.23338.19039.28339.24137.69337.65138.27538.233439.44239.39537.47237.42537.94837.90139.35439.30737.24937.20237.99537.948在確保螺紋可裝配條件下，可采用圓弧牙頂絲錐。最大圓弧半徑為(dmin-dmax)/30-5。為確定絲錐制造工藝，本表給出絲錐螺紋中徑極限尺寸。它不是絲錐的驗(yàn)收參數(shù)。螺紋規(guī)格累積螺距牙側(cè)角極限偏差螺紋規(guī)格累積螺距牙側(cè)角極限偏差公稱直徑螺距極限偏差mm累計(jì)牙數(shù)公稱直徑螺距極限偏差mm累計(jì)牙數(shù)5士0.0089士30士0.008761士0.008927士2071士0.0089士0.0107819士257士2589士252士0.0107士20193士0.0127士0.00897士0.0087士252士0.0107士20士0.0089士253士0.0127士20士0.0087士257士0.0097士20277士25士0.01372727士0.0087士25士0.01372士0.0107士202士0.0107士20士0.0087士2537士20274士0.0147士0.010727士20士0.00873士0.01272士0.0107士204士0.0147士15士0.0107士20(規(guī)范性附錄)公稱直徑范圍為1mm～4mm的30°楔形防松螺紋C.1小直徑楔形防松螺紋代號(hào)d?st——絲錐螺紋小徑d?sp——塞規(guī)螺紋中徑d2st——絲錐螺紋中徑dsp——塞規(guī)螺紋大徑dgt——絲錐螺紋大徑D?s—--內(nèi)螺紋小徑D?s——內(nèi)螺紋中徑Tdsp——塞規(guī)螺紋直徑公差C.2內(nèi)螺紋牙型P內(nèi)螺紋DDP/8圖C.1小直徑30°楔形防松內(nèi)螺紋的牙型和公差帶位置C.3內(nèi)螺紋公差和極限尺寸GB/T37462—2019小直徑30°楔形防松內(nèi)螺紋的公差帶位置見圖C.1(剖面線部分)。小直徑30°楔形防松內(nèi)螺紋涂鍍前的公差和直徑極限尺寸應(yīng)符合表C.1的規(guī)定。表C.1小直徑30°楔形防松內(nèi)螺紋涂鍍前的公差和直徑極限尺寸單位為毫米螺紋規(guī)格直徑公差Tps公稱直徑螺距maxminmaxminmaxmin10.250.9640.9190.8830.8380.0450.250.0450.0480.350.0530.350.05322.0992.0430.0560.452.6092.5492.4142.3542.2682.2080.06033.1173.0542.9002.8372.7382.6750.0633.6363.5653.3763.3053.1813.1100.07144.1514.0763.8483.7733.6213.5460.075C.4內(nèi)螺紋量規(guī)小直徑螺紋塞規(guī)的公差和直徑極限尺寸應(yīng)符合表C.2和表C.3的規(guī)定。螺紋塞規(guī)的累積螺距和牙側(cè)角極限偏差應(yīng)符合表C.4的規(guī)定。螺紋通端塞規(guī)應(yīng)旋合通過工件內(nèi)螺紋；螺紋止端塞規(guī)旋入工件內(nèi)螺紋的長度應(yīng)不超過兩個(gè)螺距。用通用檢具或光滑塞規(guī)檢驗(yàn)內(nèi)螺紋涂鍍前的小徑。光滑塞規(guī)的直徑公差帶位置見圖A.3。光滑通端塞規(guī)應(yīng)通過工件內(nèi)螺紋；光滑止端塞規(guī)進(jìn)入工件內(nèi)螺紋的長度應(yīng)不超過一個(gè)螺距。表C.2小直徑螺紋通端塞規(guī)的公差和直徑極限尺寸單位為毫米螺紋規(guī)格中徑d?sp大徑dsp小徑d1s直徑公差Tdsp新塞規(guī)磨損公稱直徑螺距maxminminmaxminmax10.250.9250.9190.9160.8380.0060.250.0060.0060.350.0070.350.00722.0072.0000.0070.452.3612.3542.3512.5072.5002.2080.00732.8442.8372.8343.0073.0002.6750.0073.3123.3053.30