硬齒(chi)(chi)面蝸(gua)桿(gan)的(de)加(jia)工(gong)方(fang)(fang)(fang)(fang)法 蝸(gua)輪蝸(gua)桿(gan)的(de)加(jia)工(gong)方(fang)(fang)(fang)(fang)法很多，如切削、鑄(zhu)造(zao)、軋制(zhi)(zhi)、沖壓等，其中常用(yong)(yong)的(de)是切削加(jia)工(gong)方(fang)(fang)(fang)(fang)法。切削加(jia)工(gong)方(fang)(fang)(fang)(fang)法分(fen)(fen)為成(cheng)形(xing)法和范成(cheng)法兩(liang)(liang)類。 1．成(cheng)形(xing)法 成(cheng)形(xing)法是在(zai)銑(xian)(xian)床上用(yong)(yong)具有(you)漸開(kai)線齒(chi)(chi)形(xing)的(de)成(cheng)形(xing)銑(xian)(xian)刀(dao)直(zhi)接(jie)切出(chu)齒(chi)(chi)形(xing)。常用(yong)(yong)的(de)有(you)圓盤銑(xian)(xian)刀(dao)和指狀(zhuang)銑(xian)(xian)刀(dao)兩(liang)(liang)種(zhong)(zhong)(zhong)(zhong)。切齒(chi)(chi)加(jia)工(gong)時，銑(xian)(xian)刀(dao)旋(xuan)轉，同(tong)時輪坯(pi)沿齒(chi)(chi)輪軸線方(fang)(fang)(fang)(fang)向移動(dong)(dong)。銑(xian)(xian)出(chu)一(yi)個齒(chi)(chi)槽以后，將輪坯(pi)轉過360°/z，再(zai)銑(xian)(xian)第二個齒(chi)(chi)槽。其余依此(ci)類推。 這(zhe)種(zhong)(zhong)(zhong)(zhong)切齒(chi)(chi)方(fang)(fang)(fang)(fang)法簡(jian)單，不需要專用(yong)(yong)機(ji)床，但生產率低，精度低，故僅適用(yong)(yong)單件或小批量生產及精度要求不高的(de)齒(chi)(chi)輪加(jia)工(gong)。 2．范成(cheng)法 范成(cheng)法是利用(yong)(yong)齒(chi)(chi)輪的(de)嚙(nie)合原理進(jin)行(xing)加(jia)工(gong)齒(chi)(chi)輪的(de)一(yi)種(zhong)(zhong)(zhong)(zhong)方(fang)(fang)(fang)(fang)法。這(zhe)種(zhong)(zhong)(zhong)(zhong)方(fang)(fang)(fang)(fang)法強制(zhi)(zhi)刀(dao)具同(tong)工(gong)件（輪坯(pi)）相對(dui)運動(dong)(dong)同(tong)時進(jin)行(xing)切削。它(ta)們之(zhi)間的(de)運動(dong)(dong)關系同(tong)一(yi)對(dui)齒(chi)(chi)輪嚙(nie)合一(yi)樣，以此(ci)來保證齒(chi)(chi)形(xing)的(de)正確和分(fen)(fen)齒(chi)(chi)的(de)均勻。對(dui)于模數m和壓力角a都(dou)相同(tong)而齒(chi)(chi)數不同(tong)的(de)齒(chi)(chi)輪，可以用(yong)(yong)同(tong)一(yi)刀(dao)具進(jin)行(xing)加(jia)工(gong)。