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(jie)構緊湊(cou),傳遞扭矩(ju)大,使用(yong)壽命長,免維(wei)護(hu),耐高溫(wen),耐酸(suan)堿防(fang)腐蝕(shi),適用(yong)于(yu)高溫(wen)高速及(ji)有腐蝕(shi)工(gong)況環境的軸系傳動(dong)。
膜(mo)(mo)片(pian)(pian)型聯(lian)(lian)(lian)軸器(qi)能補償主(zhu)動機(ji)與從(cong)動機(ji)之(zhi)間由于制(zhi)造誤差(cha)、安裝誤差(cha)、承(cheng)載變形(xing)以及溫(wen)升變化的影響(xiang)等所引起的軸向(xiang)、徑向(xiang)和角(jiao)向(xiang)偏移(yi)。膜(mo)(mo)片(pian)(pian)彈性(xing)(xing)聯(lian)(lian)(lian)軸器(qi)屬金屬彈性(xing)(xing)元件撓性(xing)(xing)聯(lian)(lian)(lian)軸器(qi),其依靠(kao)金屬聯(lian)(lian)(lian)軸器(qi)膜(mo)(mo)片(pian)(pian)來聯(lian)(lian)(lian)接主(zhu)、從(cong)動機(ji)傳遞扭矩,具有彈性(xing)(xing)減振、無噪(zao)聲、不(bu)需潤滑的優點。
膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器至(zhi)少由一(yi)個(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和(he)兩個(ge)軸(zhou)套(tao)組成(cheng)。膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)被(bei)用銷釘(ding)緊固(gu)在(zai)軸(zhou)套(tao)上(shang)一(yi)般不(bu)(bu)會松動(dong)或引起膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和(he)軸(zhou)套(tao)之(zhi)(zhi)間(jian)的(de)(de)反沖。有一(yi)些生產商提(ti)供(gong)兩個(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de)(de),也有提(ti)供(gong)三個(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de)(de),中間(jian)有一(yi)個(ge)或兩個(ge)剛性元(yuan)件,兩邊 再連在(zai)軸(zhou)套(tao)上(shang)。單膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器和(he)雙(shuang)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器的(de)(de)不(bu)(bu)同(tong)(tong)之(zhi)(zhi)處是處理(li)各種偏(pian)(pian)差(cha)能(neng)力(li)的(de)(de)不(bu)(bu)同(tong)(tong),鑒于(yu)其需要膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)能(neng)復(fu)雜的(de)(de)彎曲,所以單膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器不(bu)(bu)太適應偏(pian)(pian)心。而雙(shuang)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器可(ke)以同(tong)(tong)時曲向不(bu)(bu)同(tong)(tong)的(de)(de)方向,以此來補償偏(pian)(pian)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,銑削,和拉(la)削等(deng)機(ji)加工(gong)方法加工(gong)而(er)成,再經過整體熱處理。以保證(zheng)足夠的(de)機(ji)械強(qiang)度(du),市面上還有一種爪(zhua)盤是鑄件,能夠大批量(liang)的(de)生產,而(er)且(qie)免去了(le)加工(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,一般為-35至(zhi)+80度。
星(xing)形聯(lian)軸(zhou)(zhou)器高速運轉時由于(yu)受離(li)心力的(de)(de)(de)(de)作用而產生(sheng)的(de)(de)(de)(de)徑(jing)向運動將加速其磨(mo)損(sun)(sun),加設(she)外(wai)殼。除了能(neng)防塵存油外(wai),減(jian)薄量不(bu)足可能(neng)會(hui)造成(cheng)干(gan)涉,減(jian)薄量過大會(hui)削弱齒(chi)(chi)(chi)的(de)(de)(de)(de)強(qiang)度,且會(hui)側(ce)隙(xi)很大。外(wai)齒(chi)(chi)(chi)的(de)(de)(de)(de)接觸條件(jian)得到改善(shan)(shan),避免了在角位移條件(jian)下(xia)直齒(chi)(chi)(chi)齒(chi)(chi)(chi)端棱邊擠壓,應力集中的(de)(de)(de)(de)弊端,同時改善(shan)(shan)了齒(chi)(chi)(chi)面摩擦、磨(mo)損(sun)(sun)狀況,降低(di)了噪聲,維(wei)修周期長。星(xing)形彈(dan)(dan)性聯(lian)軸(zhou)(zhou)器外(wai)齒(chi)(chi)(chi)套齒(chi)(chi)(chi)端呈喇叭形狀,故不(bu)宜在高速和有(you)沖擊載荷(he)情況下(xia)使用,也不(bu)宜用于(yu)立軸(zhou)(zhou)的(de)(de)(de)(de)聯(lian)接。星(xing)型彈(dan)(dan)性聯(lian)軸(zhou)(zhou)器整體結構設(she)計時,要充(chong)分注意齒(chi)(chi)(chi)面與滾子之間的(de)(de)(de)(de)潤滑及(ji)防塵,還有(you)安全防護作用。因(yin)為鏈條萬一破斷,可能(neng)造成(cheng)人身事(shi)故。鼓度曲線曲率半徑(jing)與內齒(chi)(chi)(chi)單(dan)側(ce)減(jian)薄量成(cheng)正比(bi),即它與齒(chi)(chi)(chi)的(de)(de)(de)(de)嚙合間隙(xi)有(you)關,使內、外(wai)齒(chi)(chi)(chi)裝(zhuang)拆十分方便。
星型(xing)聯(lian)(lian)軸(zhou)器(qi)有時(shi)被誤(wu)認為(wei)是梅花(hua)聯(lian)(lian)軸(zhou)器(qi),他們安裝后的(de)外(wai)(wai)形(xing)(xing)幾乎(hu)相(xiang)似,但是同(tong)等型(xing)號下,星形(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)承受的(de)扭力(li)更大,相(xiang)對梅花(hua)聯(lian)(lian)軸(zhou)器(qi),它的(de)內孔和外(wai)(wai)形(xing)(xing)可以做到更小。星形(xing)(xing)彈(dan)性(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)聚(ju)氨(an)脂(zhi)彈(dan)性(xing)(xing)體(ti)由凸形(xing)(xing)爪塊限(xian)制(zhi),聯(lian)(lian)軸(zhou)器(qi)是以工(gong)(gong)程塑料(liao)作彈(dan)性(xing)(xing)元件(jian)(jian),適用于聯(lian)(lian)接兩(liang)同(tong)軸(zhou)線的(de)傳動(dong)軸(zhou)系,具有補(bu)(bu)償兩(liang)軸(zhou)相(xiang)對偏移(yi)(yi)、緩(huan)沖(chong)、減震(zhen)、耐磨(mo)性(xing)(xing)能,適應場(chang)合普遍(bian) ,傳遞轉矩20-35000.N.M,工(gong)(gong)作溫度-35-+80攝氏度。星型(xing)彈(dan)性(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)中的(de)彈(dan)性(xing)(xing)元件(jian)(jian)是工(gong)(gong)程塑料(liao),由于該工(gong)(gong)程塑料(liao)具有良好(hao)的(de)彈(dan)性(xing)(xing)、緩(huan)沖(chong)性(xing)(xing)、減震(zhen)性(xing)(xing)、耐磨(mo)性(xing)(xing),因此能很好(hao)的(de)補(bu)(bu)償兩(liang)傳動(dong)軸(zhou)系之(zhi)間的(de)各(ge)種(zhong)位移(yi)(yi).星形(xing)(xing)彈(dan)性(xing)(xing)聯(lian)(lian)軸(zhou)器(qi)的(de)聚(ju)氨(an)脂(zhi)彈(dan)性(xing)(xing)體(ti)由凸形(xing)(xing)爪塊限(xian)制(zhi)。特(te)點:預應力(li)下無(wu)齒隙的(de)連接,用于主(zhu)軸(zhou)傳動(dong)、升降平臺和機床等。
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