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雙頭蝸輪滾齒加工測量與調整

2023-12-04 14:29:29 admin

蝸桿傳動離不開蝸輪。而蝸輪加工主要是以滾齒機為主。用滾齒機對蝸輪作徑向切削或切向切削完成蝸輪齒廓的加工。蝸輪的精度在很大程度上取決于和它相對應的蝸輪滾刀。事實上由于制造的誤差,切出的齒形不可能與蝸桿齒形嚙合。面對雙頭及多頭蝸輪加工時,這種誤差值又大大的提高。

圓柱蝸輪副的嚙合原理,把蝸輪滾刀看成是一個蝸桿,通過軸向截面,它就像一個齒條。如果齒條的齒距有誤差時,與假設的標準蝸輪作嚙合運動。就會造成齒距短處,間隙大,齒距長處,出現干涉。再把齒條看回滾刀時,由于制造時齒距的誤差,雙頭分度的誤差,加工蝸輪時,就會使蝸輪的齒廓與齒廓之間,齒距形成誤差,尤其是蝸輪齒數與頭數能被整除時,這種誤差就反映在蝸輪上,而不可改變。雙頭蝸輪滾刀分度的誤差值,讓這個誤差值被蝸輪軸線中.心平分,降低這種誤差。使被加工蝸輪達到設計的技術參數,在蝸桿傳動中增加了分度精度。滿足了整機的設計要求。

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