弧齒輪介紹

弧(hu)齒(chi)(chi)(chi)(chi)輪傳(chuan)(chuan)動(dong)的(de)特(te)點是﹕(1)綜(zong)合(he)(he)曲(qu)率半徑比(bi)漸開線(xian)齒(chi)(chi)(chi)(chi)輪傳(chuan)(chuan)動(dong)大很(hen)多﹐其(qi)接觸強度(du)比(bi)漸開線(xian)齒(chi)(chi)(chi)(chi)輪傳(chuan)(chuan)動(dong)約高(gao)0.5～1.5倍﹔(2)兩(liang)輪齒(chi)(chi)(chi)(chi)沿嚙合(he)(he)線(xian)方(fang)向的(de)滾動(dong)速度(du)很(hen)大﹐齒(chi)(chi)(chi)(chi)面間(jian)易(yi)於形成(cheng)油(you)膜(mo)﹐傳(chuan)(chuan)動(dong)效(xiao)率較(jiao)(jiao)高(gao)﹐一般可(ke)(ke)達0.99～0.995﹔(3)圓(yuan)弧(hu)齒(chi)(chi)(chi)(chi)輪沿齒(chi)(chi)(chi)(chi)高(gao)方(fang)向磨(mo)損均勻﹐且(qie)容易(yi)跑合(he)(he)﹔(4)圓(yuan)弧(hu)齒(chi)(chi)(chi)(chi)輪無(wu)根切(qie)現象﹐故最小(xiao)齒(chi)(chi)(chi)(chi)數可(ke)(ke)以少(shao)。但圓(yuan)弧(hu)齒(chi)(chi)(chi)(chi)輪對中心距﹑切(qie)齒(chi)(chi)(chi)(chi)深度(du)和螺旋角的(de)誤差敏感性很(hen)大﹐這三項誤差對承載能力影響較(jiao)(jiao)大﹐故圓(yuan)弧(hu)齒(chi)(chi)(chi)(chi)輪對制(zhi)造(zao)和安裝精度(du)要求(qiu)較(jiao)(jiao)高(gao)。此(ci)外﹐單圓(yuan)弧(hu)齒(chi)(chi)(chi)(chi)輪輪齒(chi)(chi)(chi)(chi)彎曲(qu)強度(du)較(jiao)(jiao)弱﹔切(qie)削同一模(mo)數的(de)大﹑小(xiao)齒(chi)(chi)(chi)(chi)輪﹐需(xu)用兩(liang)把不同的(de)滾刀(dao)。

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