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***最新通知:現(xiàn)加工中心對外承接蝸輪蝸桿,齒輪,鏈輪,同步帶輪等非標傳動件加工,一件起做,圖紙或?qū)崢泳?8939766978 ***好消息:本公司已使用ERP平臺管理,主要產(chǎn)品,T系列齒輪換向器,MB無級變速機,擺線針輪減速機,RV蝸輪蝸桿減速機....更快更優(yōu),歡迎來電咨詢造型及參數(shù)問題!

新聞資訊 >> 什么是“蝸輪蝸桿傳動”中的“蝸桿頭數(shù)”？-

蝸桿和螺紋一樣有右旋和左旋之分，分別稱為右旋蝸桿和左旋蝸桿。蝸桿上只有一條螺旋線的稱為單頭蝸桿，即蝸桿轉(zhuǎn)一周，蝸輪轉(zhuǎn)過一齒，若蝸桿上有兩條螺旋線，就稱為雙頭蝸桿，即蝸桿轉(zhuǎn)一周，蝸輪轉(zhuǎn)過兩個齒。依此類推，設(shè)蝸桿頭數(shù)用Z1表示（一般Z1=1~4），蝸輪齒數(shù)用Z2表示。
從傳動比公式可以看出，當(dāng) Z1=1，即蝸桿為單頭，蝸桿須轉(zhuǎn) 轉(zhuǎn)蝸輪才轉(zhuǎn)一轉(zhuǎn)，因而可得到很大傳動比，一般在動力傳動中，取傳動比I=10-80；在分度機構(gòu)中，I可達1000。這樣大的傳動比如用齒輪傳動，則需要采取多級傳動才行，所以蝸桿傳動結(jié)構(gòu)緊湊，體積小、重量輕。

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