擺線針輪減(jian)速(su)機的蝸輪蝸桿傳(chuan)動(dong)和帶傳(chuan)動(dong)有什么(me)不同之處呢?今天擺線針輪減(jian)速(su)機廠家就來為(wei)大家詳細解答一下這個問(wen)題(ti)。

　　一、擺線(xian)針輪減速機蝸(gua)桿傳動(dong)特點

　　(一)傳動平穩，無噪(zao)音(yin)。由于蝸桿齒(chi)是(shi)連(lian)(lian)續不(bu)中斷(duan)的(de)螺旋齒(chi)，它(ta)與蝸輪(lun)齒(chi)嚙合(he)時是(shi)連(lian)(lian)續不(bu)斷(duan)的(de)，蝸桿齒(chi)沒有進(jin)入和(he)退出嚙合(he)的(de)過程，因(yin)此工作平穩，沖擊(ji)、震驚、噪(zao)音(yin)小。

　　(二)蝸桿傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)效(xiao)率低，一般以(yi)為(wei)蝸桿傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)效(xiao)率比齒輪傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)低。尤(you)其(qi)是具有(you)自鎖性(xing)的蝸桿傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)，其(qi)效(xiao)率在(zai)0.5以(yi)下(xia)，一般效(xiao)率只有(you)0.7～0.9。

　　(三)發燒(shao)量大，齒面輕易磨損(sun)，本錢(qian)高。

　　(四)具有(you)自鎖性(xing)。蝸桿的螺旋升角很(hen)小時，蝸桿只能帶(dai)(dai)動(dong)蝸輪(lun)傳動(dong)，而蝸輪(lun)不能帶(dai)(dai)動(dong)蝸桿滾動(dong)。

　　(五)傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)比大，結(jie)構緊(jin)湊。蝸桿頭數用Z1表示(shi)，蝸輪齒數用Z2表示(shi)。從傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)比公式I=Z2/Z1可以(yi)看出，當Z1=1，即蝸桿為單頭，蝸桿須(xu)轉(zhuan)(zhuan)Z2轉(zhuan)(zhuan)蝸輪才轉(zhuan)(zhuan)一(yi)轉(zhuan)(zhuan)，因而可得到(dao)很大傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)比，一(yi)般在動(dong)(dong)力傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)中(zhong)，取傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)比I=10-80;在分度機構中(zhong)，I可達1000。這樣大的傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)好比用齒輪傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)，則需要(yao)采取多級傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)才行，所以(yi)蝸桿傳(chuan)(chuan)(chuan)(chuan)動(dong)(dong)結(jie)構緊(jin)湊，體積小、重量輕。

　　二、擺(bai)線針輪減速機帶傳動(dong)特點(dian)

　　傳(chuan)動(dong)(dong)(dong)具有(you)結構簡樸、傳(chuan)動(dong)(dong)(dong)平穩、能(neng)緩(huan)沖(chong)吸振、可以在大的軸間距和多軸間傳(chuan)遞動(dong)(dong)(dong)力(li)，且其造價低廉、不需(xu)潤(run)滑、維護(hu)輕(qing)易等(deng)特點，在近代機(ji)械(xie)傳(chuan)動(dong)(dong)(dong)中應(ying)用(yong)十分(fen)廣泛。摩擦型(xing)帶傳(chuan)動(dong)(dong)(dong)能(neng)過載打滑、運(yun)轉噪聲低，但(dan)傳(chuan)動(dong)(dong)(dong)比不正確(滑動(dong)(dong)(dong)率(lv)在2%以下);同步帶傳(chuan)動(dong)(dong)(dong)可保證(zheng)傳(chuan)動(dong)(dong)(dong)同步，但(dan)對(dui)載荷變(bian)動(dong)(dong)(dong)的吸收能(neng)力(li)稍差(cha)，高(gao)速運(yun)轉有(you)噪聲。帶傳(chuan)動(dong)(dong)(dong)除用(yong)以傳(chuan)遞動(dong)(dong)(dong)力(li)外，有(you)時也用(yong)來輸送物料、進(jin)行零件(jian)的整列等(deng)。