產品詳情
大雞巴操(cao)逼(bi)視(shi)頻:
美制梯形(xing)(xing)螺(luo)(luo)紋(wen)(wen)(wen)(wen)稱為愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen),牙(ya)形(xing)(xing)角29度,分為一般(ban)用(yong)(yong)途愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen),對中愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen)和矮(ai)(ai)牙(ya)愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen)三種. 征代號"ACME".通常(chang)采(cai)用(yong)(yong)一般(ban)用(yong)(yong)途愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen),如果使用(yong)(yong)一般(ban)愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen)有困難,如內,外(wai)螺(luo)(luo)紋(wen)(wen)(wen)(wen)間經常(chang)出現(xian)卡死的(de)場(chang)合,則選用(yong)(yong)對中愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen).矮(ai)(ai)牙(ya)愛(ai)克(ke)(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(wen)(wen)(wen)僅用(yong)(yong)于空間受限制的(de) 殊(shu)場(chang)合.
愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)(Acme)即(ji)美制(zhi)梯形螺(luo)紋(wen)(wen)(wen),出(chu)現于(yu)1895年以前(qian),采用(yong)英寸制(zhi),牙型角為29°,不僅(jin)應(ying)用(yong)于(yu)傳動(進給和升降)和位(wei)置調整裝置中(zhong),也可用(yong)于(yu)緊固連接(jie)場合,尤(you)其在(zai)石油及化(hua)工機械(xie)產(chan)品中(zhong) 是(shi)有(you)著 的(de)(de)應(ying)用(yong)[1-3]。目(mu)前(qian)使用(yong)的(de)(de)愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)有(you)一般用(yong)途(tu)愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)、對(dui)中(zhong)愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)和矮牙愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)3種, 應(ying)用(yong)的(de)(de)是(shi)一般用(yong)途(tu)愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)。如果使用(yong)一般愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)有(you)困難,如內,外螺(luo)紋(wen)(wen)(wen)間經常出(chu)現卡死(si)的(de)(de)場合,則選用(yong)對(dui)中(zhong)愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen).矮牙愛(ai)(ai)克(ke)(ke)母(mu)(mu)(mu)螺(luo)紋(wen)(wen)(wen)僅(jin)用(yong)于(yu)空(kong)間受限制(zhi)的(de)(de) 殊場合.
愛克(ke)母螺(luo)紋 標(biao)準(zhun)的制定工(gong)作始于1932年(nian),1941年(nian)美國(guo)頒布了愛克(ke)母螺(luo)紋標(biao)準(zhun)ASA B1·3,之后經過多次(ci)的修訂改版使(shi)得該(gai)標(biao)準(zhun)得到不斷完善(shan)。現(xian)(xian)在的美國(guo)標(biao)準(zhun)為ASME B1·5-1997(R2004)[4],國(guo)內對(dui)該(gai)螺(luo)紋的使(shi)用(yong)主要(yao)是(shi)(shi)參照美國(guo)標(biao)準(zhun),目前還沒(mei)有出現(xian)(xian)可替代的標(biao)準(zhun)。愛克(ke)母螺(luo)紋標(biao)準(zhun)系(xi)(xi)列(lie)限(xian)定在0·250~5·000 in(6·35~127 mm)尺寸(cun)范圍內,而(er)對(dui)石油機(ji)械產品和許多 殊工(gong)業場合(he),使(shi)用(yong)較多的是(shi)(shi)直(zhi)徑與螺(luo)距的非(fei)標(biao)準(zhun)組合(he)系(xi)(xi)列(lie)。
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