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(jin)湊,傳(chuan)遞扭(niu)矩大,使用壽命長,免維護,耐(nai)高溫,耐(nai)酸堿(jian)防(fang)腐(fu)蝕,適(shi)用于高溫高速及有腐(fu)蝕工況環境(jing)的軸系傳(chuan)動。
膜片(pian)型聯(lian)軸(zhou)器(qi)能補償(chang)主動機(ji)(ji)(ji)與從動機(ji)(ji)(ji)之間由(you)于制造誤差(cha)、安裝誤差(cha)、承載變形以及溫升變化的影(ying)響(xiang)等所(suo)引起(qi)的軸(zhou)向(xiang)(xiang)、徑向(xiang)(xiang)和角向(xiang)(xiang)偏移。膜片(pian)彈(dan)性聯(lian)軸(zhou)器(qi)屬(shu)(shu)金屬(shu)(shu)彈(dan)性元件(jian)撓性聯(lian)軸(zhou)器(qi),其依靠金屬(shu)(shu)聯(lian)軸(zhou)器(qi)膜片(pian)來聯(lian)接主、從動機(ji)(ji)(ji)傳遞(di)扭矩,具有(you)彈(dan)性減振、無噪聲、不需潤滑的優點。
膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器至少由一個(ge)(ge)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)和(he)兩(liang)個(ge)(ge)軸(zhou)(zhou)(zhou)套(tao)組成。膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)被用(yong)銷(xiao)釘緊固在軸(zhou)(zhou)(zhou)套(tao)上(shang)一般不(bu)會松動或(huo)引(yin)起膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)和(he)軸(zhou)(zhou)(zhou)套(tao)之間(jian)的(de)(de)反沖。有一些生產商提供兩(liang)個(ge)(ge)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)的(de)(de),也(ye)有提供三個(ge)(ge)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)的(de)(de),中間(jian)有一個(ge)(ge)或(huo)兩(liang)個(ge)(ge)剛(gang)性(xing)元件(jian),兩(liang)邊(bian) 再連在軸(zhou)(zhou)(zhou)套(tao)上(shang)。單(dan)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器和(he)雙膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器的(de)(de)不(bu)同之處是處理各(ge)種偏差能(neng)力的(de)(de)不(bu)同,鑒于其需要膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)能(neng)復雜的(de)(de)彎曲,所以(yi)單(dan)膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器不(bu)太適(shi)應偏心。而雙膜(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器可以(yi)同時曲向(xiang)不(bu)同的(de)(de)方(fang)向(xiang),以(yi)此來補償(chang)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(xue)(xue),銑(xian)削(xue)(xue),和拉削(xue)(xue)等機加工(gong)方法加工(gong)而(er)成,再經過(guo)整(zheng)體熱處理。以保證(zheng)足(zu)夠的(de)機械強(qiang)度,市面上還有一(yi)種爪盤是鑄件,能夠大批量(liang)的(de)生(sheng)產(chan),而(er)且免去了加工(gong)損耗(hao)。
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(wen)度(du),一(yi)般為-35至+80度(du)。
星形聯軸器高速運轉(zhuan)時(shi)由于受離心力(li)的(de)(de)作(zuo)用(yong)而產(chan)生的(de)(de)徑(jing)向運動將加(jia)速其磨(mo)損(sun),加(jia)設(she)外(wai)殼。除了(le)(le)(le)能(neng)(neng)防塵存油外(wai),減薄(bo)量(liang)不(bu)足(zu)可(ke)能(neng)(neng)會(hui)造成(cheng)(cheng)干涉(she),減薄(bo)量(liang)過(guo)大會(hui)削(xue)弱(ruo)齒(chi)(chi)(chi)(chi)的(de)(de)強度,且會(hui)側(ce)隙很(hen)大。外(wai)齒(chi)(chi)(chi)(chi)的(de)(de)接(jie)觸條件(jian)得到改(gai)善,避免了(le)(le)(le)在角位移(yi)條件(jian)下直齒(chi)(chi)(chi)(chi)齒(chi)(chi)(chi)(chi)端(duan)棱邊(bian)擠壓,應力(li)集中的(de)(de)弊端(duan),同時(shi)改(gai)善了(le)(le)(le)齒(chi)(chi)(chi)(chi)面摩擦、磨(mo)損(sun)狀況(kuang)(kuang),降(jiang)低了(le)(le)(le)噪聲(sheng),維修周期(qi)長。星形彈(dan)性(xing)聯軸器外(wai)齒(chi)(chi)(chi)(chi)套齒(chi)(chi)(chi)(chi)端(duan)呈喇叭形狀,故不(bu)宜在高速和有沖擊(ji)載荷情(qing)況(kuang)(kuang)下使(shi)用(yong),也不(bu)宜用(yong)于立(li)軸的(de)(de)聯接(jie)。星型彈(dan)性(xing)聯軸器整體(ti)結(jie)構設(she)計時(shi),要充分注(zhu)意(yi)齒(chi)(chi)(chi)(chi)面與(yu)(yu)滾(gun)子之間的(de)(de)潤滑及(ji)防塵,還有安全防護作(zuo)用(yong)。因(yin)為(wei)鏈條萬(wan)一破斷,可(ke)能(neng)(neng)造成(cheng)(cheng)人(ren)身事故。鼓度曲線曲率(lv)半徑(jing)與(yu)(yu)內(nei)(nei)齒(chi)(chi)(chi)(chi)單(dan)側(ce)減薄(bo)量(liang)成(cheng)(cheng)正比(bi),即它與(yu)(yu)齒(chi)(chi)(chi)(chi)的(de)(de)嚙(nie)合間隙有關,使(shi)內(nei)(nei)、外(wai)齒(chi)(chi)(chi)(chi)裝拆(chai)十分方便(bian)。
星型(xing)(xing)聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)有時被誤認(ren)為(wei)是梅花聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi),他們安裝(zhuang)后的(de)(de)外(wai)形(xing)幾乎相似,但是同等型(xing)(xing)號下,星形(xing)聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)承受(shou)的(de)(de)扭力更大,相對梅花聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi),它的(de)(de)內孔和外(wai)形(xing)可以做到更小。星形(xing)彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)聚氨(an)脂彈(dan)(dan)性(xing)(xing)(xing)體由凸形(xing)爪(zhua)(zhua)塊限(xian)制(zhi),聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)是以工(gong)程(cheng)(cheng)塑(su)料(liao)作彈(dan)(dan)性(xing)(xing)(xing)元件,適用于(yu)聯(lian)(lian)(lian)接兩同軸(zhou)(zhou)(zhou)線(xian)的(de)(de)傳(chuan)動(dong)(dong)軸(zhou)(zhou)(zhou)系(xi),具有補償兩軸(zhou)(zhou)(zhou)相對偏移、緩沖(chong)、減震、耐磨性(xing)(xing)(xing)能(neng),適應場合普遍(bian) ,傳(chuan)遞轉(zhuan)矩(ju)20-35000.N.M,工(gong)作溫度-35-+80攝氏度。星型(xing)(xing)彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)中(zhong)的(de)(de)彈(dan)(dan)性(xing)(xing)(xing)元件是工(gong)程(cheng)(cheng)塑(su)料(liao),由于(yu)該(gai)工(gong)程(cheng)(cheng)塑(su)料(liao)具有良(liang)好的(de)(de)彈(dan)(dan)性(xing)(xing)(xing)、緩沖(chong)性(xing)(xing)(xing)、減震性(xing)(xing)(xing)、耐磨性(xing)(xing)(xing),因此(ci)能(neng)很(hen)好的(de)(de)補償兩傳(chuan)動(dong)(dong)軸(zhou)(zhou)(zhou)系(xi)之間的(de)(de)各種位移.星形(xing)彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)(qi)的(de)(de)聚氨(an)脂彈(dan)(dan)性(xing)(xing)(xing)體由凸形(xing)爪(zhua)(zhua)塊限(xian)制(zhi)。特點:預應力下無齒(chi)隙的(de)(de)連(lian)接,用于(yu)主(zhu)軸(zhou)(zhou)(zhou)傳(chuan)動(dong)(dong)、升降平臺和機床等。
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