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)遞扭矩大,使(shi)用壽命長,免維護,耐高(gao)溫(wen),耐酸堿防腐蝕(shi)(shi),適用于高(gao)溫(wen)高(gao)速及有腐蝕(shi)(shi)工況(kuang)環境的軸系傳(chuan)動(dong)。
膜(mo)片型聯(lian)(lian)軸(zhou)器能補(bu)償主動機(ji)與從動機(ji)之間由于制造誤差、安裝誤差、承載變(bian)形以(yi)及溫(wen)升變(bian)化的(de)(de)影響等所引起(qi)的(de)(de)軸(zhou)向(xiang)(xiang)、徑(jing)向(xiang)(xiang)和角(jiao)向(xiang)(xiang)偏移。膜(mo)片彈性(xing)(xing)聯(lian)(lian)軸(zhou)器屬金屬彈性(xing)(xing)元件撓(nao)性(xing)(xing)聯(lian)(lian)軸(zhou)器,其(qi)依(yi)靠金屬聯(lian)(lian)軸(zhou)器膜(mo)片來聯(lian)(lian)接主、從動機(ji)傳遞扭(niu)矩,具(ju)有彈性(xing)(xing)減振、無噪聲、不需潤滑的(de)(de)優點。
膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)至少由(you)一個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和(he)兩(liang)(liang)個(ge)(ge)軸(zhou)(zhou)(zhou)套(tao)(tao)組成。膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)被用銷釘(ding)緊固在(zai)軸(zhou)(zhou)(zhou)套(tao)(tao)上(shang)一般不(bu)(bu)會松動(dong)或引起膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和(he)軸(zhou)(zhou)(zhou)套(tao)(tao)之間(jian)的反沖。有一些生產商提供兩(liang)(liang)個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的,也有提供三(san)個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的,中間(jian)有一個(ge)(ge)或兩(liang)(liang)個(ge)(ge)剛性元件,兩(liang)(liang)邊 再(zai)連在(zai)軸(zhou)(zhou)(zhou)套(tao)(tao)上(shang)。單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)和(he)雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)的不(bu)(bu)同之處是處理各(ge)種(zhong)偏差(cha)能力的不(bu)(bu)同,鑒于其需要膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)能復雜的彎曲,所以單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)不(bu)(bu)太適應偏心。而雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)可以同時(shi)曲向不(bu)(bu)同的方向,以此來補(bu)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(jing)過車削(xue),銑削(xue),和拉削(xue)等(deng)機加工方法加工而成,再(zai)經(jing)過整體熱處理。以保證足(zu)夠的機械強度,市面上(shang)還有一(yi)種爪盤是鑄(zhu)件(jian),能(neng)夠大批量的生產,而且(qie)免去了(le)加工損耗(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使用(yong)溫度(du),一般為-35至+80度(du)。
星(xing)形聯軸器高速運轉時(shi)由于(yu)受離心力的(de)(de)(de)作用(yong)而產生的(de)(de)(de)徑向運動將(jiang)加速其(qi)磨損(sun),加設外(wai)殼。除了(le)能(neng)防塵存油外(wai),減薄(bo)量(liang)不(bu)足可能(neng)會造成干涉,減薄(bo)量(liang)過大(da)會削弱齒(chi)(chi)的(de)(de)(de)強(qiang)度,且會側(ce)隙很大(da)。外(wai)齒(chi)(chi)的(de)(de)(de)接觸條件(jian)得到改(gai)善,避(bi)免了(le)在角位(wei)移條件(jian)下直齒(chi)(chi)齒(chi)(chi)端棱邊擠壓,應力集中的(de)(de)(de)弊端,同時(shi)改(gai)善了(le)齒(chi)(chi)面摩(mo)擦、磨損(sun)狀況(kuang)(kuang),降低了(le)噪(zao)聲,維修周期長(chang)。星(xing)形彈(dan)(dan)性(xing)(xing)聯軸器外(wai)齒(chi)(chi)套齒(chi)(chi)端呈喇叭(ba)形狀,故不(bu)宜在高速和有沖擊(ji)載荷情(qing)況(kuang)(kuang)下使用(yong),也(ye)不(bu)宜用(yong)于(yu)立軸的(de)(de)(de)聯接。星(xing)型彈(dan)(dan)性(xing)(xing)聯軸器整體結構設計時(shi),要(yao)充分注意齒(chi)(chi)面與滾子之間的(de)(de)(de)潤滑及防塵,還(huan)有安全防護(hu)作用(yong)。因為鏈條萬一破斷,可能(neng)造成人身事故。鼓度曲線(xian)曲率半徑與內齒(chi)(chi)單側(ce)減薄(bo)量(liang)成正比,即它與齒(chi)(chi)的(de)(de)(de)嚙合間隙有關,使內、外(wai)齒(chi)(chi)裝拆十分方便(bian)。
星型(xing)聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)有(you)時被誤(wu)認為(wei)是梅(mei)花聯(lian)(lian)(lian)(lian)軸(zhou)器(qi),他們安(an)裝后(hou)的(de)外形(xing)(xing)幾乎相似,但是同等型(xing)號下(xia),星形(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)承受的(de)扭力更(geng)大,相對(dui)梅(mei)花聯(lian)(lian)(lian)(lian)軸(zhou)器(qi),它的(de)內孔和外形(xing)(xing)可以做(zuo)到更(geng)小。星形(xing)(xing)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)聚(ju)氨脂(zhi)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)體由凸(tu)形(xing)(xing)爪塊限制(zhi),聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)是以工(gong)(gong)程(cheng)塑料作(zuo)(zuo)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)元(yuan)(yuan)件(jian),適用于(yu)聯(lian)(lian)(lian)(lian)接兩(liang)同軸(zhou)線(xian)的(de)傳動軸(zhou)系,具(ju)有(you)補(bu)(bu)償(chang)兩(liang)軸(zhou)相對(dui)偏移、緩沖、減震、耐磨性(xing)(xing)(xing)能(neng),適應(ying)場合普遍 ,傳遞轉矩20-35000.N.M,工(gong)(gong)作(zuo)(zuo)溫度(du)-35-+80攝氏(shi)度(du)。星型(xing)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)中的(de)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)元(yuan)(yuan)件(jian)是工(gong)(gong)程(cheng)塑料,由于(yu)該工(gong)(gong)程(cheng)塑料具(ju)有(you)良好(hao)的(de)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)、緩沖性(xing)(xing)(xing)、減震性(xing)(xing)(xing)、耐磨性(xing)(xing)(xing),因此能(neng)很(hen)好(hao)的(de)補(bu)(bu)償(chang)兩(liang)傳動軸(zhou)系之間的(de)各種位(wei)移.星形(xing)(xing)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)(lian)(lian)軸(zhou)器(qi)的(de)聚(ju)氨脂(zhi)彈(dan)(dan)(dan)(dan)(dan)(dan)性(xing)(xing)(xing)體由凸(tu)形(xing)(xing)爪塊限制(zhi)。特點:預應(ying)力下(xia)無齒隙的(de)連接,用于(yu)主軸(zhou)傳動、升(sheng)降平臺(tai)和機床(chuang)等。
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