BS 2769-2.0-1984 手持电动工具.特殊要求.一般介绍和章节目录
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【英文标准名称】:Hand-heldelectricmotor-operatedtools.Particularrequirements.GeneralintroductionandlistofSections
【原文标准名称】:手持电动工具.特殊要求.一般介绍和章节目录
【标准号】:BS2769-2.0-1984
【标准状态】:现行
【国别】:英国
【发布日期】:1984-06-29
【实施或试行日期】:1984-06-29
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:轻便机床;电驱动装置
【英文主题词】:portablemachinetools;electrically-operateddevices
【摘要】:GivesinstructionsfortheuseofthevariousSectionsofBS2769:Part2,whichspecifytheparticularrequirementsofarangeofportableelectricmotor-operatedtools.TheSectionsarelistedandtherelationshiptothePart1'Generalrequirements'andalsocorrespondinginternationaldocuments,isexplained.
【中国标准分类号】:K64
【国际标准分类号】:25_140_20
【页数】:4P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforDeterminationofthePointLoadStrengthIndexofRockandApplicationtoRockStrengthClassifications
【原文标准名称】:岩石点负荷强度指数的测定以便用于岩石强度分类的标准试验方法
【标准号】:ASTMD5731-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compressivestrength;indextest;pointload;rock;rockclassification;Compressiontesting--rock/relatedmaterials;Indextest;Pointloadstrengthtest;Rockmaterials/properties/analysis
【摘要】:Theuniaxialcompressiontest(seeTestMethodD7012)isusedtodeterminecompressivestrengthofrockspecimens.However,itisatime-consumingandexpensivetestthatrequiressignificantspecimenpreparationandtheresultsmaynotbeavailableforalongtimeafterthesamplesarecollected.Whenextensivetestingand/ortimelyinformationisrequiredforpreliminaryandreconnaissanceinformation,alternativetestssuchasthepointloadtestcanbeusedtoreducethetimeandcostofcompressivestrengthtests,whenusedinthefield.Suchdatacanbeusedtomaketimelyandmoreinformeddecisionsduringtheexplorationphasesandmoreefficientandcosteffectiveselectionofsamplesformorepreciseandexpensivelaboratorytests.Thepointloadstrengthtestisusedasanindextestforstrengthclassificationofrockmaterials.Thetestresultsshouldnotbeusedfordesignoranalyticalpurposes.Thistestmethodisperformedtodeterminethepointloadstrengthindexofrockspecimensand,ifrequired,thepointloadstrengthanisotropyindex.Rockspecimensintheformofeithercore(thediametralandaxialtests),cutblocks(theblocktest),orirregularlumps(theirregularlumptest)aretestedbyapplicationofconcentratedloadthroughapairoftruncated,conicalplatens.Littleornospecimenpreparationisrequiredandcanthereforebetestedshortlyafterbeingobtainedandanyinfluenceofmoistureconditiononthetestdataminimized.However,theresultscanbehighlyinfluencedbyhowthespecimenistreatedfromthetimeitisobtaineduntilthetimeitistested.Therefore,itmaybenecessarytohandlespecimensinaccordancewithPracticeD5079andtodocumentmoistureconditionsinsomemannerinthedatacollection.Note18212;Thequalityoftheresultproducedbythisstandardisdependentuponthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetestingandsampling.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoverstheguidelines,requirements,andproceduresfordeterminingthepointloadstrengthindexofrock.Thisisanindextestandisintendedtobeusedtoclassifyrockstrength.1.2Specimensintheformofrockcores,blocks,orirregularlumpswithatestdiameterfrom30to85mmcanbetestedbythistestmethod.1.3Thistestmethodcanbeperformedineitherthefieldorlaboratory.Thetestistypicallyusedinthefieldbecausethetestingmachineisportable,littleorminimalspecimenpreparationisrequired,andspecimenscanbetestedwithinashorttimeframeofbeingcollected.1.4Thistestmethodappliestomediumstrengthrock(compressivestrengthover15MPa(2200psi)).1.5Thistestmethoddoesnotcoverwhichtypeofspecimenshouldbetestedorwhetheranisotropicfactorsshouldbeconsidered.Thespecificsofthepointloadtestprogramneedtobedevelopedpriortotestingandpossiblyevenbeforesampling.Suchspecificswouldbedependentontheintendeduseofthedata,aswellaspossiblebudgetaryconstraintsandpossibleotherfactors,whichareoutsidethescopeofthistestmethod.1.6AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.7Themethoduse......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:11P.;A4
【正文语种】:英语
基本信息
标准名称: | 机床 主轴端部与花盘 互换性尺寸 第1部分:A型 |
英文名称: | Machine tools; Flange type spindle noses and face plates; Sizes for interchangeability; Type A |
中标分类: |
机械 >>
金属切削机床 >>
机床综合 |
ICS分类: |
机械制造 >>
机床装置 >>
组合单元和其他装置
|
替代情况: | 替代GB 5900.1-1986;被GB/T 5900.1-2008代替 |
发布部门: | 国家技术监督局 |
发布日期: | 1997-11-13 |
实施日期: | 1998-07-01 |
首发日期: | 1986-03-01 |
作废日期: | 2009-02-01 |
主管部门: | 中国机械工业联合会 |
提出单位: | 中华人民共和国机械工业部 |
归口单位: | 全国金属切削机床标准化技术委员会 |
起草单位: | 沈阳车床所 |
出版社: | 中国标准出版社 |
出版日期: | 1998-07-01 |
页数: | 8页 |
适用范围
本标准规定了A型车床轴端部与相应花盘的互换性尺寸。本标准适用于卧式车床、自动车床,其他机床亦可参照适用。
前言
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目录
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引用标准
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所属分类: 机械 金属切削机床 机床综合 机械制造 机床装置 组合单元和其他装置