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(di)扭矩大(da),使用壽命長,免(mian)維護(hu),耐高溫,耐酸堿防腐(fu)蝕(shi),適用于高溫高速及(ji)有腐(fu)蝕(shi)工(gong)況環(huan)境的軸系傳動。
膜片(pian)型聯軸(zhou)(zhou)器(qi)能補償主(zhu)動(dong)機(ji)與(yu)從(cong)動(dong)機(ji)之間由于(yu)制造誤差、安裝誤差、承載(zai)變形以(yi)及溫升(sheng)變化的(de)影(ying)響等所引起的(de)軸(zhou)(zhou)向(xiang)、徑向(xiang)和角(jiao)向(xiang)偏(pian)移(yi)。膜片(pian)彈(dan)性聯軸(zhou)(zhou)器(qi)屬金屬彈(dan)性元件撓(nao)性聯軸(zhou)(zhou)器(qi),其依(yi)靠金屬聯軸(zhou)(zhou)器(qi)膜片(pian)來聯接主(zhu)、從(cong)動(dong)機(ji)傳(chuan)遞(di)扭矩(ju),具(ju)有彈(dan)性減振(zhen)、無噪聲、不需潤滑的(de)優(you)點。
膜片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器至少(shao)由一(yi)個膜片(pian)(pian)(pian)(pian)和兩(liang)(liang)個軸(zhou)套(tao)組成。膜片(pian)(pian)(pian)(pian)被用銷(xiao)釘緊(jin)固在(zai)(zai)軸(zhou)套(tao)上一(yi)般不會(hui)松(song)動(dong)或(huo)引起膜片(pian)(pian)(pian)(pian)和軸(zhou)套(tao)之(zhi)間的(de)反(fan)沖。有(you)一(yi)些生產(chan)商提(ti)(ti)供兩(liang)(liang)個膜片(pian)(pian)(pian)(pian)的(de),也有(you)提(ti)(ti)供三個膜片(pian)(pian)(pian)(pian)的(de),中間有(you)一(yi)個或(huo)兩(liang)(liang)個剛(gang)性元件(jian),兩(liang)(liang)邊 再(zai)連在(zai)(zai)軸(zhou)套(tao)上。單(dan)膜片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器和雙(shuang)膜片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器的(de)不同(tong)(tong)之(zhi)處(chu)是處(chu)理(li)各(ge)種偏差能(neng)(neng)力的(de)不同(tong)(tong),鑒(jian)于其(qi)需要膜片(pian)(pian)(pian)(pian)能(neng)(neng)復雜的(de)彎曲,所以(yi)單(dan)膜片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器不太適應(ying)偏心。而雙(shuang)膜片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)器可以(yi)同(tong)(tong)時曲向不同(tong)(tong)的(de)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(guo)車削,銑(xian)削,和拉削等機加(jia)工(gong)方法加(jia)工(gong)而成,再經過(guo)整體熱處理。以保證足(zu)夠的(de)機械強(qiang)度(du),市面(mian)上還(huan)有(you)一種爪盤是鑄件,能(neng)夠大批量的(de)生產,而且免去了加(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(de)使用溫度(du),一般為-35至+80度(du)。
星(xing)形(xing)聯軸(zhou)器(qi)高速(su)運轉時(shi)(shi)(shi)由于(yu)受離心力的(de)(de)作(zuo)用而(er)產生的(de)(de)徑向運動將(jiang)加速(su)其磨(mo)損,加設(she)(she)外殼。除了(le)能(neng)防塵存油(you)外,減(jian)薄量(liang)不(bu)(bu)足可能(neng)會(hui)造(zao)成干涉,減(jian)薄量(liang)過大會(hui)削弱齒(chi)(chi)的(de)(de)強度,且會(hui)側隙很大。外齒(chi)(chi)的(de)(de)接觸條(tiao)件(jian)得(de)到改善,避(bi)免(mian)了(le)在角(jiao)位移條(tiao)件(jian)下(xia)直齒(chi)(chi)齒(chi)(chi)端(duan)棱邊擠(ji)壓,應力集中(zhong)的(de)(de)弊端(duan),同(tong)時(shi)(shi)(shi)改善了(le)齒(chi)(chi)面(mian)摩擦、磨(mo)損狀(zhuang)況,降低了(le)噪(zao)聲,維修周(zhou)期長。星(xing)形(xing)彈(dan)性聯軸(zhou)器(qi)外齒(chi)(chi)套(tao)齒(chi)(chi)端(duan)呈喇叭形(xing)狀(zhuang),故不(bu)(bu)宜在高速(su)和有沖擊載荷情況下(xia)使用,也不(bu)(bu)宜用于(yu)立軸(zhou)的(de)(de)聯接。星(xing)型彈(dan)性聯軸(zhou)器(qi)整體(ti)結構設(she)(she)計時(shi)(shi)(shi),要充分注(zhu)意齒(chi)(chi)面(mian)與滾(gun)子之間的(de)(de)潤滑及防塵,還有安全防護作(zuo)用。因為鏈條(tiao)萬一破斷,可能(neng)造(zao)成人(ren)身事故。鼓度曲線曲率半(ban)徑與內(nei)齒(chi)(chi)單側減(jian)薄量(liang)成正比(bi),即它與齒(chi)(chi)的(de)(de)嚙(nie)合間隙有關,使內(nei)、外齒(chi)(chi)裝拆十分方便。
星型聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)有(you)時被誤認(ren)為是梅花(hua)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi),他們安裝后的(de)外形(xing)幾(ji)乎相似,但(dan)是同等型號下,星形(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)承受(shou)的(de)扭力更大,相對梅花(hua)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi),它(ta)的(de)內孔(kong)和外形(xing)可以做到更小(xiao)。星形(xing)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)聚氨(an)脂(zhi)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)體由(you)凸(tu)形(xing)爪塊限(xian)(xian)制(zhi),聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)是以工(gong)程(cheng)塑(su)料作彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)元件,適用于(yu)(yu)聯(lian)接兩(liang)同軸(zhou)(zhou)(zhou)線的(de)傳(chuan)(chuan)動(dong)軸(zhou)(zhou)(zhou)系,具有(you)補償(chang)兩(liang)軸(zhou)(zhou)(zhou)相對偏移、緩沖、減震(zhen)、耐(nai)磨(mo)性(xing)(xing)(xing)能,適應(ying)場(chang)合普遍 ,傳(chuan)(chuan)遞轉(zhuan)矩20-35000.N.M,工(gong)作溫度(du)-35-+80攝氏度(du)。星型彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)中(zhong)的(de)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)元件是工(gong)程(cheng)塑(su)料,由(you)于(yu)(yu)該工(gong)程(cheng)塑(su)料具有(you)良好的(de)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)、緩沖性(xing)(xing)(xing)、減震(zhen)性(xing)(xing)(xing)、耐(nai)磨(mo)性(xing)(xing)(xing),因此能很好的(de)補償(chang)兩(liang)傳(chuan)(chuan)動(dong)軸(zhou)(zhou)(zhou)系之間的(de)各(ge)種位(wei)移.星形(xing)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)的(de)聚氨(an)脂(zhi)彈(dan)(dan)(dan)(dan)性(xing)(xing)(xing)體由(you)凸(tu)形(xing)爪塊限(xian)(xian)制(zhi)。特(te)點:預應(ying)力下無(wu)齒隙的(de)連接,用于(yu)(yu)主軸(zhou)(zhou)(zhou)傳(chuan)(chuan)動(dong)、升降平臺和機床等。
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