JB-T2001.73-1999 水系统 45°锯齿形螺纹 牙型与基本尺寸

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1、ICS23.100JB中华人民共和国机械行业标准JB/T2001.12001.74一1999水系统零部件Watersystemassemblyandparts1999-06-28发布2000-01-01实施国家机械工业局发布中华人民共和国机械行业标准.1B/T2001.73一1999水系统450锯齿形螺纹牙型与基本尺寸代替1B2076-84Watersystem-45degreesaw-tooththread-Toothpatternandbasicsize范围本标准规定了450锯齿形螺纹牙型与基本尺寸。本标准适用于压力机立柱

2、用450锯齿形螺纹。型式与尺寸牙型按图1及表1的规定。2.2基本尺寸按表的规定H=re=0.25tZ=0.02t+0.16h,=0.575ti-0.175t二i/}2h-0.5ti,=e=0.25t图1表1外螺纹内螺纹间隙螺纹高度齿顶宽度圆角半径螺纹高度齿顶宽度圆角半径Zrh,e尸哗heJY}+lfi1mm63.451.500.740.50.283刀卜780.40.584.602.00.990.50.324.02.320.40.5105.752.501.241.00.365力2.860.81.0百26.903刀1.491.00

3、.406.03.400容1.0169.204.01.981.00.488刀4.480名1.02011.505.02.481.50.5610.05561.21.52413.806.02.971.50.6412刀6.641.21.53218.408.03.961.50.8016.08.801.21.84023.0010.04.95l.50.9620.010.96】22.0国家机械工业局1999-06-28批准2000-01-01实施207JB/T2001.73-1999表2内外螺纹外螺纹内螺纹内径内径内径外螺纹截面积F外径气距dd

4、,d,d,'cm'mm150147143.1144160.8160157153.1154184.16170167163.1164208.9180177173.1174236.3190187183.1184263.3200196190名192285.9210206200名202316.58220216210.8212348250246240.8242455.4280275268.5270566.210300295288.5290653.7320315308.5310747.1350344336.23388873123803743

5、66.23681052.7400392381.63841143.7420412401.64041266】16450442431.64341463.0480472461.64641672.6500492481.64841821.6520510497.05001939.0550540527.05302180.220580570557.05602436.7600590577.05802614.8620610597.06002797名650638622.46263040.9680668652.46563341.2700688672.4

6、6763549.224720708692.46963763.3750738722.47264098.7780768752.47564443.9208JB/T2001.73-1999表2(完)内外螺纹外螺纹内螺纹内径内径外螺纹截而积厂外径内径螺tWEdd2d,dl'cm2mm800784763.27684572.6820804783.27884815.2850834813.28185193.8880864843.28485580.63290088486328685852.192090488328886123.0950934923

7、.29186549.7980964943.29486981.81000984963之9687286.6106010401014刀10208075.4112011001074.010809059440118011601134.0114010099.9125012301204.012101138533标记与示例3.1液压机用450锯齿形螺纹用字母‘`YS直径x螺距/线数螺旋方向”表示，单线螺纹不必注明线数，右旋螺纹不必注明螺旋方向。3·2标记示例例1:螺纹外径250mm,螺距8mm左旋单线锯齿形螺纹:YS250x8左JB/T200

8、1.73-1999例2:螺纹外径300mm,螺距10mm右旋单线锯齿形螺纹:YS300x10JB/T2001.73-1999例3:螺纹外径520mm,螺距20mm右旋单线锯齿形螺纹:YS520x20JB/T2001.73-1999209