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(cou),傳遞扭矩大,使用(yong)壽命(ming)長(chang),免維護,耐高溫(wen),耐酸堿防腐蝕(shi)(shi),適用(yong)于(yu)高溫(wen)高速(su)及有腐蝕(shi)(shi)工況環(huan)境的軸(zhou)系傳動。
膜(mo)(mo)片型(xing)聯(lian)軸(zhou)器(qi)能補償主動(dong)機(ji)與從動(dong)機(ji)之間由(you)于制造誤(wu)差、安(an)裝(zhuang)誤(wu)差、承載變(bian)形(xing)以及溫升(sheng)變(bian)化的影響等所引起的軸(zhou)向(xiang)(xiang)、徑向(xiang)(xiang)和角向(xiang)(xiang)偏移。膜(mo)(mo)片彈(dan)(dan)性(xing)聯(lian)軸(zhou)器(qi)屬(shu)金屬(shu)彈(dan)(dan)性(xing)元件撓性(xing)聯(lian)軸(zhou)器(qi),其(qi)依靠(kao)金屬(shu)聯(lian)軸(zhou)器(qi)膜(mo)(mo)片來聯(lian)接主、從動(dong)機(ji)傳遞扭矩,具有彈(dan)(dan)性(xing)減振(zhen)、無噪聲、不需潤滑的優(you)點。
膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)器(qi)(qi)至(zhi)少由一(yi)個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和兩(liang)個(ge)(ge)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)套(tao)組成。膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)被用銷釘緊固在軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)套(tao)上一(yi)般不(bu)會松動(dong)或(huo)引起(qi)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)和軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)套(tao)之間的(de)反沖。有(you)(you)一(yi)些生產商(shang)提(ti)供兩(liang)個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的(de),也有(you)(you)提(ti)供三個(ge)(ge)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)的(de),中(zhong)間有(you)(you)一(yi)個(ge)(ge)或(huo)兩(liang)個(ge)(ge)剛性元(yuan)件,兩(liang)邊 再連在軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)套(tao)上。單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)器(qi)(qi)和雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)器(qi)(qi)的(de)不(bu)同之處(chu)是處(chu)理各種偏(pian)差(cha)能力的(de)不(bu)同,鑒(jian)于其需要(yao)膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)能復雜的(de)彎曲,所以(yi)單膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)器(qi)(qi)不(bu)太適應(ying)偏(pian)心。而(er)雙膜(mo)(mo)(mo)片(pian)(pian)(pian)(pian)聯(lian)(lian)軸(zhou)(zhou)(zhou)(zhou)(zhou)(zhou)器(qi)(qi)可以(yi)同時曲向(xiang)不(bu)同的(de)方向(xiang),以(yi)此來補償偏(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。梅花形聯軸器經過車削,銑削,和拉削等機加(jia)(jia)工(gong)方法加(jia)(jia)工(gong)而(er)成,再經過整體熱處理(li)。以保證足夠的機械強度,市(shi)面(mian)上還有一種(zhong)爪盤是(shi)鑄件(jian),能(neng)夠大批量的生(sheng)產,而(er)且(qie)免去了(le)加(jia)(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使(shi)用溫(wen)度(du),一(yi)般為-35至+80度(du)。
星(xing)形(xing)聯(lian)軸(zhou)器(qi)高速運轉時(shi)(shi)由于(yu)受(shou)離心力的作用(yong)而產生的徑向(xiang)運動將加速其磨(mo)損(sun),加設外(wai)殼。除(chu)了(le)(le)能防塵存油外(wai),減薄(bo)量(liang)不足(zu)可能會造(zao)成(cheng)干涉,減薄(bo)量(liang)過大(da)會削弱(ruo)齒(chi)(chi)的強度,且會側隙很大(da)。外(wai)齒(chi)(chi)的接觸條(tiao)(tiao)件得到改善,避免了(le)(le)在角位移(yi)條(tiao)(tiao)件下(xia)直齒(chi)(chi)齒(chi)(chi)端棱邊(bian)擠壓,應力集中的弊端,同時(shi)(shi)改善了(le)(le)齒(chi)(chi)面摩(mo)擦、磨(mo)損(sun)狀況(kuang),降低了(le)(le)噪(zao)聲,維修周期長(chang)。星(xing)形(xing)彈性聯(lian)軸(zhou)器(qi)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)沖擊載荷(he)情況(kuang)下(xia)使用(yong),也不宜用(yong)于(yu)立(li)軸(zhou)的聯(lian)接。星(xing)型彈性聯(lian)軸(zhou)器(qi)整(zheng)體結構設計(ji)時(shi)(shi),要充分(fen)注意(yi)齒(chi)(chi)面與滾子之間的潤滑及防塵,還有(you)(you)安全防護作用(yong)。因為鏈條(tiao)(tiao)萬(wan)一(yi)破斷,可能造(zao)成(cheng)人身(shen)事故。鼓度曲線曲率半徑與內齒(chi)(chi)單(dan)側減薄(bo)量(liang)成(cheng)正比(bi),即它與齒(chi)(chi)的嚙合間隙有(you)(you)關,使內、外(wai)齒(chi)(chi)裝拆十分(fen)方(fang)便(bian)。
星(xing)(xing)型聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)有時被誤認為是(shi)梅花聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi),他們安裝后的外形(xing)幾乎相似(si),但是(shi)同(tong)等型號(hao)下(xia),星(xing)(xing)形(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)承受的扭力更大(da),相對(dui)梅花聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi),它的內孔和外形(xing)可以做到(dao)更小。星(xing)(xing)形(xing)彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)聚(ju)(ju)氨(an)脂(zhi)彈(dan)(dan)性(xing)(xing)(xing)體由(you)凸(tu)形(xing)爪(zhua)(zhua)塊限(xian)制(zhi),聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)是(shi)以工(gong)(gong)程塑料(liao)作(zuo)彈(dan)(dan)性(xing)(xing)(xing)元(yuan)件,適(shi)用(yong)于(yu)聯(lian)(lian)接(jie)兩(liang)同(tong)軸(zhou)(zhou)線的傳動軸(zhou)(zhou)系(xi),具有補(bu)償(chang)兩(liang)軸(zhou)(zhou)相對(dui)偏移(yi)、緩(huan)沖(chong)、減(jian)(jian)震、耐(nai)磨性(xing)(xing)(xing)能,適(shi)應(ying)場合普(pu)遍 ,傳遞轉(zhuan)矩20-35000.N.M,工(gong)(gong)作(zuo)溫度-35-+80攝氏度。星(xing)(xing)型彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)中(zhong)的彈(dan)(dan)性(xing)(xing)(xing)元(yuan)件是(shi)工(gong)(gong)程塑料(liao),由(you)于(yu)該工(gong)(gong)程塑料(liao)具有良好的彈(dan)(dan)性(xing)(xing)(xing)、緩(huan)沖(chong)性(xing)(xing)(xing)、減(jian)(jian)震性(xing)(xing)(xing)、耐(nai)磨性(xing)(xing)(xing),因此能很好的補(bu)償(chang)兩(liang)傳動軸(zhou)(zhou)系(xi)之間的各種位移(yi).星(xing)(xing)形(xing)彈(dan)(dan)性(xing)(xing)(xing)聯(lian)(lian)軸(zhou)(zhou)器(qi)(qi)的聚(ju)(ju)氨(an)脂(zhi)彈(dan)(dan)性(xing)(xing)(xing)體由(you)凸(tu)形(xing)爪(zhua)(zhua)塊限(xian)制(zhi)。特點:預應(ying)力下(xia)無齒(chi)隙的連接(jie),用(yong)于(yu)主軸(zhou)(zhou)傳動、升降平臺(tai)和機床等。
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