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,傳遞扭矩大,使(shi)用壽命長(chang),免維護,耐高(gao)(gao)溫,耐酸堿防腐(fu)蝕(shi),適用于高(gao)(gao)溫高(gao)(gao)速及有腐(fu)蝕(shi)工況環境(jing)的軸系傳動。
膜(mo)(mo)片(pian)(pian)型聯(lian)(lian)軸(zhou)(zhou)器(qi)能補(bu)償(chang)主動(dong)機與從動(dong)機之間(jian)由于制造(zao)誤差、安(an)裝誤差、承載(zai)變形(xing)以及溫升變化(hua)的影響等所引起(qi)的軸(zhou)(zhou)向(xiang)、徑向(xiang)和角向(xiang)偏移。膜(mo)(mo)片(pian)(pian)彈性(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)屬(shu)金屬(shu)彈性(xing)元件撓(nao)性(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi),其依(yi)靠金屬(shu)聯(lian)(lian)軸(zhou)(zhou)器(qi)膜(mo)(mo)片(pian)(pian)來聯(lian)(lian)接主、從動(dong)機傳遞扭矩,具有(you)彈性(xing)減(jian)振、無噪聲、不(bu)需潤(run)滑的優點。
膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)至(zhi)少(shao)由(you)一(yi)個(ge)(ge)膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和兩(liang)個(ge)(ge)軸(zhou)(zhou)(zhou)(zhou)套(tao)組成(cheng)。膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)被用(yong)銷釘緊固(gu)在軸(zhou)(zhou)(zhou)(zhou)套(tao)上一(yi)般不(bu)會松動或(huo)引(yin)起(qi)膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和軸(zhou)(zhou)(zhou)(zhou)套(tao)之(zhi)間(jian)的(de)反沖(chong)。有(you)一(yi)些生產商提供(gong)兩(liang)個(ge)(ge)膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de),也有(you)提供(gong)三(san)個(ge)(ge)膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de),中間(jian)有(you)一(yi)個(ge)(ge)或(huo)兩(liang)個(ge)(ge)剛(gang)性元件,兩(liang)邊 再連(lian)在軸(zhou)(zhou)(zhou)(zhou)套(tao)上。單膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)和雙膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)的(de)不(bu)同(tong)之(zhi)處是處理(li)各種偏差能(neng)力的(de)不(bu)同(tong),鑒于其需要膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)能(neng)復雜(za)的(de)彎(wan)曲,所以單膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)不(bu)太適應(ying)偏心。而雙膜(mo)(mo)(mo)(mo)(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)(zhou)(zhou)器(qi)可以同(tong)時曲向(xiang)不(bu)同(tong)的(de)方向(xiang),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,銑削,和拉削等機(ji)加(jia)工(gong)方法加(jia)工(gong)而成,再經過整體熱處(chu)理。以(yi)保證足夠(gou)的機(ji)械強度,市面(mian)上(shang)還有一種爪盤是鑄件,能夠(gou)大批量的生產(chan),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(yong)溫度,一(yi)般為-35至+80度。
星(xing)形聯軸器高速運轉時(shi)由于受離心力的(de)作用而產(chan)生的(de)徑(jing)向運動將加(jia)速其磨損(sun),加(jia)設外(wai)(wai)(wai)殼。除了(le)(le)(le)能(neng)防塵(chen)存油外(wai)(wai)(wai),減(jian)薄量不足可能(neng)會造成干涉,減(jian)薄量過大(da)會削弱齒(chi)的(de)強度(du)(du),且會側隙很大(da)。外(wai)(wai)(wai)齒(chi)的(de)接觸條件得到改(gai)善,避免了(le)(le)(le)在(zai)角位移(yi)條件下直齒(chi)齒(chi)端棱邊(bian)擠壓(ya),應(ying)力集中(zhong)的(de)弊(bi)端,同時(shi)改(gai)善了(le)(le)(le)齒(chi)面(mian)摩擦(ca)、磨損(sun)狀(zhuang)況,降低了(le)(le)(le)噪聲,維修周期(qi)長。星(xing)形彈性聯軸器外(wai)(wai)(wai)齒(chi)套齒(chi)端呈(cheng)喇叭形狀(zhuang),故(gu)不宜在(zai)高速和有沖(chong)擊載(zai)荷情(qing)況下使用,也不宜用于立軸的(de)聯接。星(xing)型彈性聯軸器整體結構(gou)設計時(shi),要充分(fen)注意齒(chi)面(mian)與(yu)(yu)滾子之間的(de)潤滑及防塵(chen),還有安全(quan)防護作用。因為鏈條萬一破(po)斷,可能(neng)造成人身事故(gu)。鼓(gu)度(du)(du)曲線曲率半徑(jing)與(yu)(yu)內(nei)齒(chi)單(dan)側減(jian)薄量成正比,即它(ta)與(yu)(yu)齒(chi)的(de)嚙合間隙有關,使內(nei)、外(wai)(wai)(wai)齒(chi)裝(zhuang)拆(chai)十分(fen)方便。
星(xing)型(xing)聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)有時被誤認為(wei)是(shi)梅花聯(lian)(lian)(lian)軸(zhou)器(qi)(qi),他們(men)安裝(zhuang)后(hou)的(de)外形(xing)(xing)(xing)幾乎(hu)相(xiang)似,但(dan)是(shi)同等型(xing)號下,星(xing)形(xing)(xing)(xing)聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)承受的(de)扭力更大(da),相(xiang)對梅花聯(lian)(lian)(lian)軸(zhou)器(qi)(qi),它的(de)內(nei)孔和(he)外形(xing)(xing)(xing)可以做到更小。星(xing)形(xing)(xing)(xing)彈(dan)(dan)(dan)性聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)聚氨(an)脂(zhi)彈(dan)(dan)(dan)性體(ti)(ti)由凸形(xing)(xing)(xing)爪塊(kuai)限制,聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)是(shi)以工(gong)(gong)(gong)程塑(su)料(liao)作彈(dan)(dan)(dan)性元(yuan)件,適用于聯(lian)(lian)(lian)接兩同軸(zhou)線的(de)傳動軸(zhou)系,具有補(bu)償兩軸(zhou)相(xiang)對偏移、緩沖(chong)(chong)、減(jian)震、耐磨(mo)性能,適應場(chang)合普遍 ,傳遞(di)轉(zhuan)矩(ju)20-35000.N.M,工(gong)(gong)(gong)作溫度-35-+80攝氏度。星(xing)型(xing)彈(dan)(dan)(dan)性聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)中(zhong)的(de)彈(dan)(dan)(dan)性元(yuan)件是(shi)工(gong)(gong)(gong)程塑(su)料(liao),由于該工(gong)(gong)(gong)程塑(su)料(liao)具有良好的(de)彈(dan)(dan)(dan)性、緩沖(chong)(chong)性、減(jian)震性、耐磨(mo)性,因此能很好的(de)補(bu)償兩傳動軸(zhou)系之間的(de)各種位移.星(xing)形(xing)(xing)(xing)彈(dan)(dan)(dan)性聯(lian)(lian)(lian)軸(zhou)器(qi)(qi)的(de)聚氨(an)脂(zhi)彈(dan)(dan)(dan)性體(ti)(ti)由凸形(xing)(xing)(xing)爪塊(kuai)限制。特點:預應力下無齒(chi)隙的(de)連接,用于主(zhu)軸(zhou)傳動、升(sheng)降平臺和(he)機床等。
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