您好,欢迎访问三七文档
当前位置:首页 > 商业/管理/HR > 管理学资料 > 有关优先数系的讨论-李建春
··Development&InnovationofMachinery&ElectricalProductsVol.23,No.5Sep.,2010235201090、、、,GB/T321-2005《》。,,。,、。,,,、,、。,,,。,,,,。,。,、,。,。1,。,1、10、100、…、10N0.1、0.01、…、1/10N,N。1~10、10~100、…1~0.1、0.1~0.01、…,。q=10r姨,r。GB321-2005《(,271000):,,。,。,,。,,。,。:;;:TH12:Adoi:10.3969/j.issn.1002-6673.2010.05.010:1002-6673(2010)05-025-03:2010-08-25:(1970-),,。:。TheDiscussionabouttheSeriesofPreferredNumbersLIJian-Chun(TaishanUniversity,TaianShangdong271000,China)Abstract:Theseriesofpreferrednumbersisakindofscientificvaluesystem,itisonekindofhierarchicmeasurelessheadropenumeralsys-tem,classificationapplyingtovariousmagnitude.Itisadecimalgeometricseries,itisplayingimportantroletosimplificationandcoordinationstandardizing.Theperferrednumbersandtheseriesofpreferrednumberscanbeappliedtothedesignofproducts,suchastheproductofeachlinkofthestructuredesign,accuracydesignetc.Indeterminingthevalueofclassification,everypersonnelofproductdesignanddevel-opment,shouldestablishastandardizedconsciousness,toadopttheperferrednumbersandtheseriesofpreferrednumberstothefull.Soitiseasytoorganizetheproductionandlowercosts,itcanbehavinggreatsignificanceonthetechnologyandoneconomy.Keywords:theseriesofpreferrednumbers;perferrednumbers;standardize25··》r5、10、20、40、80,R5、Rl0、R20、R40、R80。,:R5,105姨≈1.6;R10,1010姨≈1.25;R20,1020姨≈1.12;R40,1040姨≈1.06。R80,。。、、。,。5。,。,,。。1()[2]。2,:(1),。(2)()。R560%,R1025%,R2012%,R406%。(3)。;,,。R40R20;R10R5;,R5,R10;R20,R40。:R5Rl0,Rl0R20,R20R40。(4),(),,。Rl0/3,Rl0,1,1.00,2.00,4.00,8.00,16.00,…;1.25,1.25,2.50,5.00,10.00,20.00,…;1.60,1.60,3.15,6.30,12.50,25.00,…,q=(1010姨)3≈1.25983≈2,,。R20,6,2。(5)。;、。3(1)。1.251.60(1.25×1.60=2.00),,2.00。,,,,。1.251.60:4+8=12,122.00。(2)。2.242.00:(2.24÷2.00=1.12),,1.12。,,,,。2.242.00:14-12=2,21.12。(3)。1.12:(1.122=1.25),,1.25。,,21.12,,。1.122,2×2=4,41.25。(4)。2.24:(2.24姨=1.50),,1.50。,,2.24142,,。14÷2=7,71.50。1Tab.1Basicseries()NR5R10R20R400.11110101001.001.001.001.00-400401.00001.061.05-391411.05931.121.121.1-382421.12201.181.2-373431.18851.251.251.25(1.2)-364441.25891.321.3-355451.33351.401.40-346461.41251.50-337471.49621.601.601.601.60(1.5)*-328481.58491.70-31949l.67881.801.80-3010501.77831.90-2911511.88362.002.002.00-2812521.99532.122.1-2713532.11352.242.242.2-2614542.23872.362.4-2515552.371426··4,,。。,:(1)。:d叟5×9.55×106[τ]n3姨(mm),:d叟CPn3姨=41.2(mm),5%,:d叟41.2×(1+5%)=43.3(mm)d=45mm。,,。,。,。(2)、。,,。,。准60,准55,,,准60,准55。,,。,。,准60。5,,,,。,,:(1)i()。。,,。燮500:i=0.45D3姨+0.001D。(2)。。,。燮500mm,IT5,,。IT6,R5,105姨≈1.6,5,10。,,、,,。,IT6.5=12.5i,IT7.5=20i,IT8.5=31.5i,Rl0,1010姨≈1.25。(3)。,。,,,、。,,,。,180mm,,Rl0,R20,500~3150mm,。,,[1]。。。6,。、,、。,,R5、Rl0、R20、R40,,。,(),,,()。,。:[1].[M].:,2006.[2].[M].:,2008.1Fig.1Thestructuredesignoftheshaft准45准55准60准5527
本文标题:有关优先数系的讨论-李建春
链接地址:https://www.777doc.com/doc-5361141 .html