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(chuan)遞扭(niu)矩大(da),使用壽命(ming)長,免(mian)維護,耐高溫(wen),耐酸堿(jian)防(fang)腐(fu)蝕,適用于高溫(wen)高速及有腐(fu)蝕工況(kuang)環境的軸(zhou)系傳(chuan)動。
膜片(pian)型聯軸(zhou)(zhou)器(qi)能補償主(zhu)動(dong)機(ji)(ji)與從動(dong)機(ji)(ji)之間由于制造誤差(cha)、安裝(zhuang)誤差(cha)、承載變形以(yi)及溫(wen)升(sheng)變化的影響等所引起(qi)的軸(zhou)(zhou)向(xiang)(xiang)、徑向(xiang)(xiang)和角向(xiang)(xiang)偏(pian)移。膜片(pian)彈(dan)性(xing)聯軸(zhou)(zhou)器(qi)屬(shu)(shu)金屬(shu)(shu)彈(dan)性(xing)元件撓性(xing)聯軸(zhou)(zhou)器(qi),其(qi)依(yi)靠金屬(shu)(shu)聯軸(zhou)(zhou)器(qi)膜片(pian)來(lai)聯接主(zhu)、從動(dong)機(ji)(ji)傳(chuan)遞扭(niu)矩,具(ju)有彈(dan)性(xing)減(jian)振(zhen)、無(wu)噪聲、不需潤滑(hua)的優點。
膜(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)(lian)軸(zhou)器(qi)至(zhi)少(shao)由一(yi)個膜(mo)(mo)片(pian)(pian)(pian)(pian)和兩(liang)個軸(zhou)套(tao)組成(cheng)。膜(mo)(mo)片(pian)(pian)(pian)(pian)被(bei)用(yong)銷釘緊固(gu)在軸(zhou)套(tao)上一(yi)般不(bu)(bu)會松動(dong)或引起(qi)膜(mo)(mo)片(pian)(pian)(pian)(pian)和軸(zhou)套(tao)之間的反沖。有(you)一(yi)些生產商提(ti)(ti)供兩(liang)個膜(mo)(mo)片(pian)(pian)(pian)(pian)的,也(ye)有(you)提(ti)(ti)供三個膜(mo)(mo)片(pian)(pian)(pian)(pian)的,中(zhong)間有(you)一(yi)個或兩(liang)個剛性(xing)元件,兩(liang)邊 再(zai)連在軸(zhou)套(tao)上。單(dan)膜(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)(lian)軸(zhou)器(qi)和雙膜(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)(lian)軸(zhou)器(qi)的不(bu)(bu)同(tong)(tong)之處是處理各種偏差能(neng)力(li)的不(bu)(bu)同(tong)(tong),鑒于其需要(yao)膜(mo)(mo)片(pian)(pian)(pian)(pian)能(neng)復雜的彎曲,所以(yi)單(dan)膜(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)(lian)軸(zhou)器(qi)不(bu)(bu)太(tai)適應(ying)偏心。而(er)雙膜(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)(lian)軸(zhou)器(qi)可(ke)以(yi)同(tong)(tong)時(shi)曲向不(bu)(bu)同(tong)(tong)的方向,以(yi)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,銑削,和拉(la)削等機(ji)加(jia)(jia)工方法加(jia)(jia)工而成(cheng),再經過整體(ti)熱(re)處理(li)。以保證足(zu)夠(gou)(gou)的機(ji)械強度,市面上還有一種爪盤(pan)是鑄件(jian),能夠(gou)(gou)大批量的生(sheng)產(chan),而且免去(qu)了加(jia)(jia)工損耗。
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(de)使(shi)用溫(wen)度,一(yi)般為-35至+80度。
星形(xing)聯軸(zhou)(zhou)器高(gao)速(su)運(yun)轉時由于受(shou)離(li)心力的作(zuo)用而產生的徑向運(yun)動將(jiang)加速(su)其磨(mo)損(sun),加設外殼。除了(le)能防(fang)塵(chen)存油外,減薄(bo)(bo)量(liang)(liang)不足可能會(hui)造成干涉,減薄(bo)(bo)量(liang)(liang)過大會(hui)削弱齒(chi)(chi)的強度(du),且(qie)會(hui)側(ce)隙(xi)很大。外齒(chi)(chi)的接觸條件得到(dao)改善(shan),避免了(le)在(zai)角(jiao)位移條件下直齒(chi)(chi)齒(chi)(chi)端(duan)棱邊擠壓,應力集中的弊端(duan),同時改善(shan)了(le)齒(chi)(chi)面摩擦、磨(mo)損(sun)狀況,降(jiang)低了(le)噪聲,維修周(zhou)期長(chang)。星形(xing)彈性(xing)聯軸(zhou)(zhou)器外齒(chi)(chi)套齒(chi)(chi)端(duan)呈喇叭形(xing)狀,故(gu)不宜(yi)在(zai)高(gao)速(su)和有(you)(you)沖擊載(zai)荷情況下使(shi)用,也不宜(yi)用于立(li)軸(zhou)(zhou)的聯接。星型彈性(xing)聯軸(zhou)(zhou)器整體結構設計時,要充分注意齒(chi)(chi)面與滾子之間(jian)的潤滑及防(fang)塵(chen),還有(you)(you)安全防(fang)護作(zuo)用。因為(wei)鏈(lian)條萬一(yi)破斷,可能造成人身事故(gu)。鼓度(du)曲線曲率半徑與內(nei)(nei)齒(chi)(chi)單側(ce)減薄(bo)(bo)量(liang)(liang)成正比,即它與齒(chi)(chi)的嚙合間(jian)隙(xi)有(you)(you)關,使(shi)內(nei)(nei)、外齒(chi)(chi)裝(zhuang)拆十分方便。
星(xing)型(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)有時被誤認(ren)為是(shi)梅(mei)花(hua)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi),他們安裝后的(de)(de)(de)(de)(de)(de)外形(xing)(xing)幾乎(hu)相(xiang)似,但是(shi)同等(deng)型(xing)號下(xia),星(xing)形(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)承受的(de)(de)(de)(de)(de)(de)扭力更大(da),相(xiang)對(dui)梅(mei)花(hua)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi),它的(de)(de)(de)(de)(de)(de)內(nei)孔和外形(xing)(xing)可以做到更小(xiao)。星(xing)形(xing)(xing)彈(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)聚氨(an)脂彈(dan)(dan)性(xing)(xing)(xing)(xing)體由(you)凸形(xing)(xing)爪(zhua)塊限制,聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)是(shi)以工程塑(su)料(liao)作彈(dan)(dan)性(xing)(xing)(xing)(xing)元件,適用于聯(lian)(lian)接兩同軸(zhou)(zhou)線的(de)(de)(de)(de)(de)(de)傳(chuan)動軸(zhou)(zhou)系(xi),具有補償(chang)(chang)兩軸(zhou)(zhou)相(xiang)對(dui)偏移(yi)、緩(huan)(huan)沖、減震、耐磨性(xing)(xing)(xing)(xing)能(neng),適應(ying)場(chang)合普遍 ,傳(chuan)遞轉矩20-35000.N.M,工作溫度(du)-35-+80攝氏度(du)。星(xing)型(xing)彈(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)中的(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)(xing)元件是(shi)工程塑(su)料(liao),由(you)于該工程塑(su)料(liao)具有良好的(de)(de)(de)(de)(de)(de)彈(dan)(dan)性(xing)(xing)(xing)(xing)、緩(huan)(huan)沖性(xing)(xing)(xing)(xing)、減震性(xing)(xing)(xing)(xing)、耐磨性(xing)(xing)(xing)(xing),因此能(neng)很(hen)好的(de)(de)(de)(de)(de)(de)補償(chang)(chang)兩傳(chuan)動軸(zhou)(zhou)系(xi)之間(jian)的(de)(de)(de)(de)(de)(de)各種位(wei)移(yi).星(xing)形(xing)(xing)彈(dan)(dan)性(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)聚氨(an)脂彈(dan)(dan)性(xing)(xing)(xing)(xing)體由(you)凸形(xing)(xing)爪(zhua)塊限制。特點:預(yu)應(ying)力下(xia)無齒(chi)隙的(de)(de)(de)(de)(de)(de)連接,用于主軸(zhou)(zhou)傳(chuan)動、升降平臺和機床等(deng)。
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