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,使用(yong)壽命長,免維(wei)護,耐高(gao)溫,耐酸堿防腐蝕,適用(yong)于高(gao)溫高(gao)速(su)及有腐蝕工況環(huan)境的軸系傳(chuan)動。
膜片型聯(lian)軸(zhou)(zhou)(zhou)器能補償主動機與從(cong)動機之間(jian)由(you)于制造誤差、安裝(zhuang)誤差、承載變形以及(ji)溫升變化的(de)影響等所引起的(de)軸(zhou)(zhou)(zhou)向、徑向和(he)角向偏移。膜片彈(dan)性聯(lian)軸(zhou)(zhou)(zhou)器屬(shu)金(jin)屬(shu)彈(dan)性元件撓性聯(lian)軸(zhou)(zhou)(zhou)器,其依靠金(jin)屬(shu)聯(lian)軸(zhou)(zhou)(zhou)器膜片來聯(lian)接主、從(cong)動機傳遞扭矩,具有彈(dan)性減振、無噪聲(sheng)、不需潤(run)滑的(de)優點(dian)。
膜片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)器至少由一(yi)個(ge)(ge)膜片(pian)(pian)(pian)(pian)和(he)兩(liang)個(ge)(ge)軸(zhou)套(tao)(tao)(tao)組成。膜片(pian)(pian)(pian)(pian)被用銷釘緊固(gu)在軸(zhou)套(tao)(tao)(tao)上(shang)(shang)一(yi)般不會松動或(huo)引(yin)起(qi)膜片(pian)(pian)(pian)(pian)和(he)軸(zhou)套(tao)(tao)(tao)之(zhi)間的(de)(de)反(fan)沖。有(you)一(yi)些生產(chan)商提供兩(liang)個(ge)(ge)膜片(pian)(pian)(pian)(pian)的(de)(de),也有(you)提供三個(ge)(ge)膜片(pian)(pian)(pian)(pian)的(de)(de),中(zhong)間有(you)一(yi)個(ge)(ge)或(huo)兩(liang)個(ge)(ge)剛(gang)性元件(jian),兩(liang)邊 再連在軸(zhou)套(tao)(tao)(tao)上(shang)(shang)。單(dan)膜片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)器和(he)雙膜片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)器的(de)(de)不同(tong)之(zhi)處(chu)是處(chu)理(li)各種(zhong)偏(pian)(pian)差能(neng)力的(de)(de)不同(tong),鑒于(yu)其需(xu)要膜片(pian)(pian)(pian)(pian)能(neng)復雜的(de)(de)彎曲,所(suo)以單(dan)膜片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)器不太(tai)適應偏(pian)(pian)心。而雙膜片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)器可以同(tong)時曲向(xiang)不同(tong)的(de)(de)方向(xiang),以此來(lai)補償偏(pian)(pian)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(he)拉削(xue)等機(ji)加工(gong)方(fang)法加工(gong)而成(cheng),再(zai)經(jing)過整體熱處理。以保證足夠的(de)機(ji)械強度,市面上(shang)還有一種爪盤是(shi)鑄件,能夠大批(pi)量(liang)的(de)生產,而且(qie)免去(qu)了加工(gong)損(sun)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(wen)度,一般為-35至+80度。
星(xing)(xing)形(xing)聯軸(zhou)器高(gao)速運(yun)(yun)轉時由于受離(li)心力的(de)(de)作用而產生的(de)(de)徑(jing)向運(yun)(yun)動將加速其磨(mo)損,加設(she)(she)外(wai)(wai)殼(ke)。除(chu)了(le)能防塵存油外(wai)(wai),減(jian)薄量不足可能會(hui)造(zao)(zao)成(cheng)干(gan)涉,減(jian)薄量過大(da)會(hui)削弱齒(chi)(chi)(chi)(chi)的(de)(de)強度(du),且(qie)會(hui)側隙很(hen)大(da)。外(wai)(wai)齒(chi)(chi)(chi)(chi)的(de)(de)接觸條件得到改善(shan),避(bi)免(mian)了(le)在角位(wei)移條件下直齒(chi)(chi)(chi)(chi)齒(chi)(chi)(chi)(chi)端(duan)棱邊擠壓(ya),應(ying)力集中(zhong)的(de)(de)弊端(duan),同時改善(shan)了(le)齒(chi)(chi)(chi)(chi)面(mian)(mian)摩擦(ca)、磨(mo)損狀(zhuang)(zhuang)況(kuang),降低了(le)噪聲,維修(xiu)周(zhou)期長。星(xing)(xing)形(xing)彈(dan)(dan)性(xing)(xing)聯軸(zhou)器外(wai)(wai)齒(chi)(chi)(chi)(chi)套齒(chi)(chi)(chi)(chi)端(duan)呈喇叭(ba)形(xing)狀(zhuang)(zhuang),故(gu)(gu)不宜在高(gao)速和有(you)沖擊載(zai)荷情況(kuang)下使用,也(ye)不宜用于立軸(zhou)的(de)(de)聯接。星(xing)(xing)型彈(dan)(dan)性(xing)(xing)聯軸(zhou)器整(zheng)體結(jie)構設(she)(she)計時,要充(chong)分注意齒(chi)(chi)(chi)(chi)面(mian)(mian)與(yu)滾子(zi)之間(jian)的(de)(de)潤滑及(ji)防塵,還有(you)安(an)全防護作用。因為鏈條萬(wan)一(yi)破(po)斷,可能造(zao)(zao)成(cheng)人身事故(gu)(gu)。鼓度(du)曲線曲率半徑(jing)與(yu)內(nei)齒(chi)(chi)(chi)(chi)單側減(jian)薄量成(cheng)正比(bi),即它與(yu)齒(chi)(chi)(chi)(chi)的(de)(de)嚙(nie)合間(jian)隙有(you)關,使內(nei)、外(wai)(wai)齒(chi)(chi)(chi)(chi)裝(zhuang)拆十分方便。
星(xing)(xing)型(xing)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)有時(shi)被誤認為是(shi)(shi)梅花聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi),他們安(an)裝(zhuang)后(hou)的(de)外形(xing)(xing)(xing)幾乎相(xiang)似(si),但是(shi)(shi)同(tong)等型(xing)號下(xia),星(xing)(xing)形(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)承受的(de)扭(niu)力更(geng)大,相(xiang)對梅花聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi),它的(de)內孔和外形(xing)(xing)(xing)可以做到更(geng)小(xiao)。星(xing)(xing)形(xing)(xing)(xing)彈(dan)性(xing)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)聚(ju)氨(an)脂彈(dan)性(xing)體由(you)(you)凸形(xing)(xing)(xing)爪(zhua)塊限制,聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)是(shi)(shi)以工程塑料(liao)作彈(dan)性(xing)元(yuan)件,適用(yong)于聯(lian)(lian)接兩同(tong)軸(zhou)(zhou)(zhou)線的(de)傳(chuan)動(dong)軸(zhou)(zhou)(zhou)系(xi),具(ju)有補償兩軸(zhou)(zhou)(zhou)相(xiang)對偏(pian)移(yi)、緩沖、減震、耐磨性(xing)能,適應場合普遍 ,傳(chuan)遞轉矩20-35000.N.M,工作溫(wen)度-35-+80攝氏度。星(xing)(xing)型(xing)彈(dan)性(xing)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)中的(de)彈(dan)性(xing)元(yuan)件是(shi)(shi)工程塑料(liao),由(you)(you)于該工程塑料(liao)具(ju)有良好的(de)彈(dan)性(xing)、緩沖性(xing)、減震性(xing)、耐磨性(xing),因此(ci)能很(hen)好的(de)補償兩傳(chuan)動(dong)軸(zhou)(zhou)(zhou)系(xi)之(zhi)間(jian)的(de)各種(zhong)位移(yi).星(xing)(xing)形(xing)(xing)(xing)彈(dan)性(xing)聯(lian)(lian)軸(zhou)(zhou)(zhou)器(qi)(qi)的(de)聚(ju)氨(an)脂彈(dan)性(xing)體由(you)(you)凸形(xing)(xing)(xing)爪(zhua)塊限制。特點(dian):預應力下(xia)無齒隙的(de)連(lian)接,用(yong)于主軸(zhou)(zhou)(zhou)傳(chuan)動(dong)、升降平(ping)臺和機(ji)床等。
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