膜片聯軸器在傳遞扭矩的同時通過彈性膜片的的變形來補償軸向和角向的位移,是一種高性能的金屬彈性撓性聯軸器。膜片式聯軸器結構緊湊,傳遞扭矩(ju)大(da),使用壽命長,免維(wei)護,耐高溫(wen),耐酸(suan)堿防(fang)腐(fu)蝕,適用于高溫(wen)高速(su)及有腐(fu)蝕工(gong)況環(huan)境(jing)的(de)軸系傳動。
膜片型聯(lian)軸(zhou)(zhou)器(qi)(qi)能補償主動機與從動機之(zhi)間由(you)于制造(zao)誤(wu)差(cha)、安裝誤(wu)差(cha)、承載變形以及溫(wen)升(sheng)變化的影響等所引起的軸(zhou)(zhou)向(xiang)、徑向(xiang)和角向(xiang)偏移。膜片彈性聯(lian)軸(zhou)(zhou)器(qi)(qi)屬(shu)金(jin)屬(shu)彈性元(yuan)件撓性聯(lian)軸(zhou)(zhou)器(qi)(qi),其依靠金(jin)屬(shu)聯(lian)軸(zhou)(zhou)器(qi)(qi)膜片來聯(lian)接主、從動機傳遞扭矩,具有(you)彈性減(jian)振、無(wu)噪(zao)聲(sheng)、不(bu)需潤滑的優點(dian)。
膜(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)至少(shao)由一(yi)(yi)(yi)個膜(mo)片(pian)(pian)(pian)(pian)(pian)和兩個軸(zhou)(zhou)(zhou)(zhou)套(tao)組成。膜(mo)片(pian)(pian)(pian)(pian)(pian)被用銷釘緊(jin)固在軸(zhou)(zhou)(zhou)(zhou)套(tao)上一(yi)(yi)(yi)般(ban)不(bu)(bu)會松動或引起膜(mo)片(pian)(pian)(pian)(pian)(pian)和軸(zhou)(zhou)(zhou)(zhou)套(tao)之(zhi)(zhi)間的(de)反沖。有(you)(you)一(yi)(yi)(yi)些生(sheng)產商提(ti)供(gong)兩個膜(mo)片(pian)(pian)(pian)(pian)(pian)的(de),也有(you)(you)提(ti)供(gong)三個膜(mo)片(pian)(pian)(pian)(pian)(pian)的(de),中間有(you)(you)一(yi)(yi)(yi)個或兩個剛性(xing)元件,兩邊 再連在軸(zhou)(zhou)(zhou)(zhou)套(tao)上。單(dan)膜(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)和雙(shuang)膜(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)的(de)不(bu)(bu)同(tong)(tong)(tong)之(zhi)(zhi)處是處理各(ge)種偏差能(neng)力的(de)不(bu)(bu)同(tong)(tong)(tong),鑒于其(qi)需要(yao)膜(mo)片(pian)(pian)(pian)(pian)(pian)能(neng)復雜的(de)彎曲,所以單(dan)膜(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)不(bu)(bu)太適應偏心。而雙(shuang)膜(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)可以同(tong)(tong)(tong)時曲向(xiang)不(bu)(bu)同(tong)(tong)(tong)的(de)方向(xiang),以此來補償偏心。
梅花聯軸器是一種應用很普遍的聯軸器,也叫爪式聯軸器,是由兩個金屬爪盤和一個彈性體組成。兩個金屬爪盤一般是45號鋼,但是在要求載荷靈敏的情況下也有用鋁合金的。梅花形聯軸器經過車削,銑(xian)削,和拉削等(deng)機(ji)(ji)加(jia)工(gong)方法加(jia)工(gong)而(er)成,再經過整(zheng)體熱處理(li)。以保證足夠的機(ji)(ji)械強度,市(shi)面上還有一種爪盤是鑄件(jian),能夠大批量的生產,而(er)且免(mian)去了(le)加(jia)工(gong)損耗。
梅花型聯軸器彈性體一般都是由工程塑料或橡膠組成。梅花形彈性聯軸器的壽命也就是彈性體的壽命。由于彈性體是受壓而不易受拉。一般彈性體的壽命為10年。由于彈性體具有緩沖,減振的作用,所以在有強烈振動的場合下使用較多。彈性體的性能極限溫度,決定了梅花彈性聯軸器的使用溫度(du),一般為-35至+80度(du)。
星形聯(lian)(lian)軸(zhou)器高(gao)速(su)(su)運轉時(shi)(shi)由于受離心(xin)力(li)的作用而產生的徑向運動將加速(su)(su)其磨(mo)損,加設(she)外殼。除了(le)能防塵(chen)存油外,減(jian)薄(bo)量不足可能會(hui)造(zao)(zao)成干涉,減(jian)薄(bo)量過大會(hui)削(xue)弱齒(chi)(chi)(chi)的強度(du),且會(hui)側隙(xi)很大。外齒(chi)(chi)(chi)的接觸條件(jian)(jian)得到改善,避免了(le)在角位移條件(jian)(jian)下(xia)直(zhi)齒(chi)(chi)(chi)齒(chi)(chi)(chi)端棱(leng)邊擠壓,應力(li)集中(zhong)的弊端,同時(shi)(shi)改善了(le)齒(chi)(chi)(chi)面(mian)摩擦(ca)、磨(mo)損狀(zhuang)況,降低了(le)噪聲,維修周期長(chang)。星形彈(dan)性聯(lian)(lian)軸(zhou)器外齒(chi)(chi)(chi)套齒(chi)(chi)(chi)端呈喇叭形狀(zhuang),故不宜(yi)在高(gao)速(su)(su)和有沖擊載荷情況下(xia)使用,也(ye)不宜(yi)用于立軸(zhou)的聯(lian)(lian)接。星型彈(dan)性聯(lian)(lian)軸(zhou)器整體結構設(she)計時(shi)(shi),要充分(fen)注意齒(chi)(chi)(chi)面(mian)與(yu)滾(gun)子之間的潤滑及防塵(chen),還有安全防護作用。因為鏈條萬(wan)一破斷,可能造(zao)(zao)成人身(shen)事(shi)故。鼓度(du)曲(qu)(qu)線曲(qu)(qu)率半徑與(yu)內齒(chi)(chi)(chi)單側減(jian)薄(bo)量成正比,即它與(yu)齒(chi)(chi)(chi)的嚙合間隙(xi)有關,使內、外齒(chi)(chi)(chi)裝拆十分(fen)方便(bian)。
星(xing)型聯(lian)軸(zhou)(zhou)(zhou)器(qi)有時被誤(wu)認為(wei)是梅(mei)(mei)花(hua)聯(lian)軸(zhou)(zhou)(zhou)器(qi),他們安裝(zhuang)后(hou)的(de)外形(xing)(xing)(xing)(xing)幾乎相(xiang)(xiang)似,但是同等型號下(xia),星(xing)形(xing)(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)承受的(de)扭力(li)更大(da),相(xiang)(xiang)對梅(mei)(mei)花(hua)聯(lian)軸(zhou)(zhou)(zhou)器(qi),它的(de)內孔和外形(xing)(xing)(xing)(xing)可以做到更小(xiao)。星(xing)形(xing)(xing)(xing)(xing)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)聚氨脂彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)體由(you)凸(tu)形(xing)(xing)(xing)(xing)爪(zhua)塊限(xian)制(zhi),聯(lian)軸(zhou)(zhou)(zhou)器(qi)是以工(gong)程(cheng)塑料作(zuo)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)元(yuan)件(jian),適(shi)用于聯(lian)接兩同軸(zhou)(zhou)(zhou)線的(de)傳動軸(zhou)(zhou)(zhou)系,具有補償兩軸(zhou)(zhou)(zhou)相(xiang)(xiang)對偏移、緩沖(chong)、減震、耐(nai)磨(mo)(mo)性(xing)(xing)(xing)(xing)能,適(shi)應場合普遍 ,傳遞轉矩20-35000.N.M,工(gong)作(zuo)溫度(du)(du)-35-+80攝(she)氏度(du)(du)。星(xing)型彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)中的(de)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)元(yuan)件(jian)是工(gong)程(cheng)塑料,由(you)于該(gai)工(gong)程(cheng)塑料具有良好的(de)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)、緩沖(chong)性(xing)(xing)(xing)(xing)、減震性(xing)(xing)(xing)(xing)、耐(nai)磨(mo)(mo)性(xing)(xing)(xing)(xing),因此能很好的(de)補償兩傳動軸(zhou)(zhou)(zhou)系之(zhi)間的(de)各種位移.星(xing)形(xing)(xing)(xing)(xing)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)的(de)聚氨脂彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)體由(you)凸(tu)形(xing)(xing)(xing)(xing)爪(zhua)塊限(xian)制(zhi)。特點(dian):預應力(li)下(xia)無齒(chi)隙的(de)連接,用于主軸(zhou)(zhou)(zhou)傳動、升(sheng)降平臺(tai)和機床(chuang)等。
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