產品詳情
大雞(ji)巴操逼視頻(pin):
美制梯形(xing)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)稱為愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen),牙(ya)形(xing)角29度,分(fen)為一(yi)般(ban)用途愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen),對中(zhong)愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)和矮牙(ya)愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)三種. 征代號"ACME".通(tong)常采用一(yi)般(ban)用途愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen),如(ru)果(guo)使(shi)用一(yi)般(ban)愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)有困難,如(ru)內,外(wai)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)間經常出現卡(ka)死的(de)場合,則選(xuan)用對中(zhong)愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen).矮牙(ya)愛(ai)(ai)(ai)克(ke)母(mu)螺(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)僅用于空間受(shou)限制的(de) 殊場合.
愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)(Acme)即(ji)美(mei)制(zhi)梯形(xing)螺(luo)(luo)紋(wen),出現于1895年(nian)以前(qian),采(cai)用(yong)(yong)(yong)英寸(cun)制(zhi),牙(ya)型角為(wei)29°,不僅應(ying)(ying)用(yong)(yong)(yong)于傳動(進(jin)給和(he)升降(jiang))和(he)位置調(diao)整(zheng)裝置中(zhong)(zhong),也可用(yong)(yong)(yong)于緊(jin)固連接(jie)場(chang)合,尤其(qi)在石油(you)及化工機(ji)械產(chan)品中(zhong)(zhong) 是有著(zhu) 的應(ying)(ying)用(yong)(yong)(yong)[1-3]。目前(qian)使用(yong)(yong)(yong)的愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)有一般(ban)用(yong)(yong)(yong)途愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)、對中(zhong)(zhong)愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)和(he)矮牙(ya)愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)3種(zhong), 應(ying)(ying)用(yong)(yong)(yong)的是一般(ban)用(yong)(yong)(yong)途愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)。如果使用(yong)(yong)(yong)一般(ban)愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)有困(kun)難,如內,外(wai)螺(luo)(luo)紋(wen)間經常出現卡死的場(chang)合,則選用(yong)(yong)(yong)對中(zhong)(zhong)愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen).矮牙(ya)愛克(ke)母(mu)(mu)螺(luo)(luo)紋(wen)僅用(yong)(yong)(yong)于空間受限制(zhi)的 殊(shu)場(chang)合.
愛克母螺(luo)紋(wen) 標(biao)準(zhun)(zhun)(zhun)的(de)制(zhi)定(ding)工作(zuo)始于1932年,1941年美國(guo)頒布了(le)愛克母螺(luo)紋(wen)標(biao)準(zhun)(zhun)(zhun)ASA B1·3,之后經過多(duo)(duo)次的(de)修訂改(gai)版使得(de)該標(biao)準(zhun)(zhun)(zhun)得(de)到不斷(duan)完善。現(xian)在的(de)美國(guo)標(biao)準(zhun)(zhun)(zhun)為(wei)ASME B1·5-1997(R2004)[4],國(guo)內對該螺(luo)紋(wen)的(de)使用(yong)主要是(shi)參(can)照美國(guo)標(biao)準(zhun)(zhun)(zhun),目前還沒有出(chu)現(xian)可替代的(de)標(biao)準(zhun)(zhun)(zhun)。愛克母螺(luo)紋(wen)標(biao)準(zhun)(zhun)(zhun)系(xi)(xi)列(lie)限(xian)定(ding)在0·250~5·000 in(6·35~127 mm)尺(chi)寸范圍內,而對石油機械(xie)產品和許多(duo)(duo) 殊工業場合,使用(yong)較多(duo)(duo)的(de)是(shi)直徑(jing)與螺(luo)距的(de)非標(biao)準(zhun)(zhun)(zhun)組(zu)合系(xi)(xi)列(lie)。
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