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(chuan)(chuan)遞扭(niu)矩大,使用(yong)壽命(ming)長,免(mian)維護,耐高溫(wen)(wen),耐酸堿防(fang)腐蝕,適用(yong)于(yu)高溫(wen)(wen)高速及有腐蝕工況環境的軸(zhou)系傳(chuan)(chuan)動。
膜片型聯軸器(qi)(qi)能補償主(zhu)動機(ji)(ji)與從動機(ji)(ji)之間由于(yu)制造誤(wu)差、安裝(zhuang)誤(wu)差、承載變形(xing)以及溫升變化的影(ying)響(xiang)等所引(yin)起的軸向(xiang)、徑向(xiang)和角向(xiang)偏移(yi)。膜片彈(dan)(dan)性聯軸器(qi)(qi)屬金屬彈(dan)(dan)性元件(jian)撓性聯軸器(qi)(qi),其依靠金屬聯軸器(qi)(qi)膜片來聯接(jie)主(zhu)、從動機(ji)(ji)傳遞扭矩,具有彈(dan)(dan)性減振(zhen)、無(wu)噪聲、不需潤(run)滑的優點。
膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)器(qi)至少由(you)一(yi)個(ge)(ge)(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和(he)兩(liang)(liang)個(ge)(ge)(ge)軸(zhou)(zhou)套(tao)組成。膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)被用(yong)銷釘緊固(gu)在軸(zhou)(zhou)套(tao)上(shang)一(yi)般不(bu)(bu)會松動或引起膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)和(he)軸(zhou)(zhou)套(tao)之(zhi)間(jian)的(de)(de)反沖(chong)。有(you)一(yi)些生產商提供(gong)兩(liang)(liang)個(ge)(ge)(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de)(de),也(ye)有(you)提供(gong)三(san)個(ge)(ge)(ge)膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)的(de)(de),中間(jian)有(you)一(yi)個(ge)(ge)(ge)或兩(liang)(liang)個(ge)(ge)(ge)剛性(xing)元(yuan)件(jian),兩(liang)(liang)邊 再連在軸(zhou)(zhou)套(tao)上(shang)。單膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)器(qi)和(he)雙膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)器(qi)的(de)(de)不(bu)(bu)同(tong)之(zhi)處(chu)是處(chu)理各種偏差(cha)能(neng)力的(de)(de)不(bu)(bu)同(tong),鑒于其需要膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)能(neng)復雜的(de)(de)彎曲,所以(yi)單膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)器(qi)不(bu)(bu)太適應偏心(xin)(xin)。而雙膜(mo)(mo)片(pian)(pian)(pian)(pian)(pian)(pian)聯(lian)軸(zhou)(zhou)器(qi)可以(yi)同(tong)時曲向(xiang)不(bu)(bu)同(tong)的(de)(de)方向(xiang),以(yi)此(ci)來(lai)補償偏心(xin)(xin)。
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(he)拉削等機(ji)加(jia)工方(fang)法加(jia)工而成,再經過整體熱處理。以保證(zheng)足夠的機(ji)械強(qiang)度,市面上還有一種爪盤是鑄件,能夠大批(pi)量的生產,而且免去了加(jia)工損耗。
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(wen)度,一般為(wei)-35至+80度。
星形(xing)聯軸(zhou)器高速運轉時(shi)(shi)由于(yu)受離心力的(de)作用(yong)而產生的(de)徑向運動(dong)將加速其磨(mo)損,加設外(wai)殼(ke)。除了能(neng)防(fang)塵(chen)存(cun)油外(wai),減薄(bo)量(liang)(liang)不足可能(neng)會造成(cheng)(cheng)干涉,減薄(bo)量(liang)(liang)過大(da)會削弱齒(chi)(chi)的(de)強度,且(qie)會側(ce)隙(xi)很大(da)。外(wai)齒(chi)(chi)的(de)接觸(chu)條件得(de)到改善(shan),避(bi)免了在角位移(yi)條件下(xia)直(zhi)齒(chi)(chi)齒(chi)(chi)端棱邊擠壓,應(ying)力集(ji)中(zhong)的(de)弊(bi)端,同時(shi)(shi)改善(shan)了齒(chi)(chi)面(mian)摩(mo)擦、磨(mo)損狀況,降(jiang)低了噪聲,維修周期長。星形(xing)彈(dan)性(xing)聯軸(zhou)器外(wai)齒(chi)(chi)套齒(chi)(chi)端呈喇叭形(xing)狀,故不宜在高速和有(you)(you)(you)沖擊載荷情況下(xia)使用(yong),也不宜用(yong)于(yu)立軸(zhou)的(de)聯接。星型(xing)彈(dan)性(xing)聯軸(zhou)器整體結構設計時(shi)(shi),要充分注意齒(chi)(chi)面(mian)與滾(gun)子之間(jian)的(de)潤滑及防(fang)塵(chen),還有(you)(you)(you)安全(quan)防(fang)護作用(yong)。因為(wei)鏈(lian)條萬一破斷,可能(neng)造成(cheng)(cheng)人身事故。鼓(gu)度曲線曲率(lv)半徑與內齒(chi)(chi)單側(ce)減薄(bo)量(liang)(liang)成(cheng)(cheng)正比,即它與齒(chi)(chi)的(de)嚙合(he)間(jian)隙(xi)有(you)(you)(you)關,使內、外(wai)齒(chi)(chi)裝拆十分方便。
星(xing)型聯(lian)軸器(qi)(qi)(qi)有(you)時(shi)被誤認為是梅花聯(lian)軸器(qi)(qi)(qi),他們安裝(zhuang)后的(de)(de)外(wai)形(xing)(xing)幾(ji)乎相似,但是同(tong)等型號(hao)下,星(xing)形(xing)(xing)聯(lian)軸器(qi)(qi)(qi)承受(shou)的(de)(de)扭(niu)力更大,相對梅花聯(lian)軸器(qi)(qi)(qi),它的(de)(de)內孔(kong)和(he)外(wai)形(xing)(xing)可以做到更小。星(xing)形(xing)(xing)彈(dan)性(xing)(xing)聯(lian)軸器(qi)(qi)(qi)聚氨(an)脂(zhi)彈(dan)性(xing)(xing)體由(you)(you)凸形(xing)(xing)爪(zhua)塊(kuai)限(xian)制,聯(lian)軸器(qi)(qi)(qi)是以工(gong)程(cheng)塑料(liao)作(zuo)(zuo)彈(dan)性(xing)(xing)元件,適用于(yu)(yu)聯(lian)接兩同(tong)軸線的(de)(de)傳(chuan)動軸系,具(ju)有(you)補償兩軸相對偏移(yi)、緩(huan)沖(chong)、減(jian)(jian)震、耐(nai)磨(mo)性(xing)(xing)能,適應場合普遍 ,傳(chuan)遞(di)轉矩20-35000.N.M,工(gong)作(zuo)(zuo)溫度(du)-35-+80攝氏(shi)度(du)。星(xing)型彈(dan)性(xing)(xing)聯(lian)軸器(qi)(qi)(qi)中(zhong)的(de)(de)彈(dan)性(xing)(xing)元件是工(gong)程(cheng)塑料(liao),由(you)(you)于(yu)(yu)該工(gong)程(cheng)塑料(liao)具(ju)有(you)良好(hao)的(de)(de)彈(dan)性(xing)(xing)、緩(huan)沖(chong)性(xing)(xing)、減(jian)(jian)震性(xing)(xing)、耐(nai)磨(mo)性(xing)(xing),因此能很好(hao)的(de)(de)補償兩傳(chuan)動軸系之(zhi)間的(de)(de)各種(zhong)位移(yi).星(xing)形(xing)(xing)彈(dan)性(xing)(xing)聯(lian)軸器(qi)(qi)(qi)的(de)(de)聚氨(an)脂(zhi)彈(dan)性(xing)(xing)體由(you)(you)凸形(xing)(xing)爪(zhua)塊(kuai)限(xian)制。特點:預應力下無齒隙的(de)(de)連接,用于(yu)(yu)主軸傳(chuan)動、升降平臺和(he)機床等。
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