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,傳(chuan)遞扭矩(ju)大,使(shi)用(yong)壽(shou)命長,免(mian)維護,耐(nai)高溫,耐(nai)酸堿防腐蝕,適(shi)用(yong)于高溫高速及有腐蝕工況環境的軸系傳(chuan)動。
膜(mo)(mo)片型聯(lian)軸(zhou)(zhou)(zhou)器(qi)能補償主(zhu)動機(ji)與從動機(ji)之(zhi)間(jian)由于制造(zao)誤(wu)差、安裝(zhuang)誤(wu)差、承(cheng)載變形以及溫升變化(hua)的(de)影響等所引起(qi)的(de)軸(zhou)(zhou)(zhou)向、徑向和角向偏移。膜(mo)(mo)片彈(dan)性(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi)屬金(jin)屬彈(dan)性(xing)元件撓性(xing)聯(lian)軸(zhou)(zhou)(zhou)器(qi),其依靠(kao)金(jin)屬聯(lian)軸(zhou)(zhou)(zhou)器(qi)膜(mo)(mo)片來聯(lian)接主(zhu)、從動機(ji)傳(chuan)遞(di)扭矩,具有(you)彈(dan)性(xing)減振、無噪(zao)聲、不(bu)需潤滑(hua)的(de)優點。
膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯軸(zhou)(zhou)器(qi)至少(shao)由一(yi)個(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)和(he)兩(liang)(liang)個(ge)軸(zhou)(zhou)套組(zu)成。膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)被用銷釘緊(jin)固在軸(zhou)(zhou)套上一(yi)般不(bu)會(hui)松動或引起膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)和(he)軸(zhou)(zhou)套之間的(de)(de)(de)反沖。有(you)一(yi)些生(sheng)產商(shang)提供(gong)兩(liang)(liang)個(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)的(de)(de)(de),也有(you)提供(gong)三個(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)的(de)(de)(de),中間有(you)一(yi)個(ge)或兩(liang)(liang)個(ge)剛性元件,兩(liang)(liang)邊(bian) 再連在軸(zhou)(zhou)套上。單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯軸(zhou)(zhou)器(qi)和(he)雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯軸(zhou)(zhou)器(qi)的(de)(de)(de)不(bu)同之處(chu)是(shi)處(chu)理(li)各種(zhong)偏差能(neng)力(li)的(de)(de)(de)不(bu)同,鑒于(yu)其需要膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)能(neng)復雜的(de)(de)(de)彎曲,所以單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯軸(zhou)(zhou)器(qi)不(bu)太適(shi)應偏心。而雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯軸(zhou)(zhou)器(qi)可以同時曲向不(bu)同的(de)(de)(de)方向,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(xue),銑(xian)削(xue),和拉削(xue)等機加工(gong)(gong)方法加工(gong)(gong)而(er)(er)成,再經過整體熱處(chu)理。以保證(zheng)足(zu)夠的(de)機械強(qiang)度,市面上還(huan)有一種爪盤是鑄(zhu)件,能夠大批量的(de)生(sheng)產(chan),而(er)(er)且免去了加工(gong)(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,一般為-35至+80度。
星形聯軸(zhou)器高速運轉時(shi)由(you)于受離心力的(de)(de)(de)作用(yong)而產生的(de)(de)(de)徑(jing)向運動將(jiang)加(jia)速其磨(mo)損(sun),加(jia)設外殼(ke)。除了能(neng)防(fang)塵存油外,減薄(bo)量(liang)不(bu)足(zu)可能(neng)會(hui)造(zao)成干涉,減薄(bo)量(liang)過(guo)大會(hui)削(xue)弱齒(chi)(chi)的(de)(de)(de)強(qiang)度,且會(hui)側(ce)隙很大。外齒(chi)(chi)的(de)(de)(de)接觸條件得到改善(shan)(shan),避(bi)免(mian)了在角位移條件下直齒(chi)(chi)齒(chi)(chi)端(duan)棱邊擠壓,應力集中的(de)(de)(de)弊端(duan),同時(shi)改善(shan)(shan)了齒(chi)(chi)面摩擦、磨(mo)損(sun)狀(zhuang)況(kuang),降低(di)了噪聲(sheng),維修周期(qi)長。星形彈性(xing)(xing)聯軸(zhou)器外齒(chi)(chi)套齒(chi)(chi)端(duan)呈喇叭形狀(zhuang),故不(bu)宜在高速和有(you)(you)沖擊載(zai)荷情況(kuang)下使用(yong),也不(bu)宜用(yong)于立軸(zhou)的(de)(de)(de)聯接。星型彈性(xing)(xing)聯軸(zhou)器整體(ti)結構設計(ji)時(shi),要(yao)充分(fen)(fen)注意齒(chi)(chi)面與滾子之間(jian)(jian)的(de)(de)(de)潤滑及防(fang)塵,還有(you)(you)安全防(fang)護作用(yong)。因為鏈條萬(wan)一破斷,可能(neng)造(zao)成人(ren)身事故。鼓度曲(qu)線曲(qu)率半徑(jing)與內齒(chi)(chi)單側(ce)減薄(bo)量(liang)成正(zheng)比,即它與齒(chi)(chi)的(de)(de)(de)嚙合間(jian)(jian)隙有(you)(you)關,使內、外齒(chi)(chi)裝(zhuang)拆(chai)十分(fen)(fen)方(fang)便。
星(xing)型(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)有時被誤認為是(shi)(shi)梅花聯(lian)(lian)軸(zhou)(zhou)器(qi),他們安裝后的(de)(de)(de)外形(xing)幾乎相(xiang)(xiang)似,但是(shi)(shi)同等(deng)型(xing)號下,星(xing)形(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)承受的(de)(de)(de)扭力更(geng)大,相(xiang)(xiang)對梅花聯(lian)(lian)軸(zhou)(zhou)器(qi),它的(de)(de)(de)內(nei)孔(kong)和外形(xing)可以(yi)做到更(geng)小。星(xing)形(xing)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)聚氨(an)脂(zhi)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)體由(you)凸形(xing)爪塊限(xian)(xian)制(zhi),聯(lian)(lian)軸(zhou)(zhou)器(qi)是(shi)(shi)以(yi)工程塑料(liao)(liao)作(zuo)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)元(yuan)件(jian),適(shi)用(yong)于(yu)聯(lian)(lian)接(jie)兩同軸(zhou)(zhou)線(xian)的(de)(de)(de)傳(chuan)(chuan)動(dong)軸(zhou)(zhou)系(xi)(xi),具有補償兩軸(zhou)(zhou)相(xiang)(xiang)對偏移、緩(huan)沖、減震、耐磨性(xing)(xing)(xing)(xing)(xing)(xing)能(neng)(neng),適(shi)應場合普遍 ,傳(chuan)(chuan)遞轉(zhuan)矩20-35000.N.M,工作(zuo)溫度(du)(du)-35-+80攝氏度(du)(du)。星(xing)型(xing)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)中的(de)(de)(de)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)元(yuan)件(jian)是(shi)(shi)工程塑料(liao)(liao),由(you)于(yu)該工程塑料(liao)(liao)具有良(liang)好的(de)(de)(de)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)、緩(huan)沖性(xing)(xing)(xing)(xing)(xing)(xing)、減震性(xing)(xing)(xing)(xing)(xing)(xing)、耐磨性(xing)(xing)(xing)(xing)(xing)(xing),因此能(neng)(neng)很好的(de)(de)(de)補償兩傳(chuan)(chuan)動(dong)軸(zhou)(zhou)系(xi)(xi)之間的(de)(de)(de)各種位(wei)移.星(xing)形(xing)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)的(de)(de)(de)聚氨(an)脂(zhi)彈(dan)(dan)(dan)性(xing)(xing)(xing)(xing)(xing)(xing)體由(you)凸形(xing)爪塊限(xian)(xian)制(zhi)。特點(dian):預應力下無(wu)齒隙的(de)(de)(de)連接(jie),用(yong)于(yu)主軸(zhou)(zhou)傳(chuan)(chuan)動(dong)、升降平臺和機床等(deng)。
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