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B棟401
具體參數
拖泵銑齒方(fang)法和工藝(yi)過(guo)程
在(zai)普通臥(wo)式(shi)銑(xian)(xian)床上,采(cai)用(yong)(yong)帶有(you)轉盤的分(fen)(fen)度頭(tou)(tou)進(jin)行分(fen)(fen)度。具體方法(fa)是(shi)想(xiang)將(jiang)齒(chi)坯固定在(zai)分(fen)(fen)度頭(tou)(tou)上,見 調(diao)整(zheng)分(fen)(fen)度頭(tou)(tou)傾角(jiao),將(jiang)分(fen)(fen)度頭(tou)(tou)扳起(qi)一(yi)個(ge)角(jiao)度,該(gai)角(jiao)度等于(yu)錐(zhui)齒(chi)輪根(gen)錐(zhui)角(jiao)δf,用(yong)(yong)切痕法(fa)使銑(xian)(xian)刀(dao)廓形(xing) 的對(dui)稱線對(dui)準齒(chi)坯的中(zhong)(zhong)心,調(diao)整(zheng)切削深度,以大端為基(ji)準,將(jiang)工(gong)作臺升高一(yi)個(ge)大端全齒(chi)高后,先銑(xian)(xian)齒(chi) 槽的中(zhong)(zhong)部(bu),由于(yu)此(ci)時采(cai)用(yong)(yong)的直齒(chi)錐(zhui)齒(chi)輪成形(xing)銑(xian)(xian)刀(dao)的厚度是(shi)按照略小于(yu)錐(zhui)齒(chi)輪小端的齒(chi)槽寬度設計的, 所以齒(chi)槽中(zhong)(zhong)部(bu)銑(xian)(xian)好后,齒(chi)輪大端和兩側(ce)面還有(you)一(yi)定加(jia)(jia)工(gong)余量,因此(ci),還要對(dui)上述(shu)部(bu)位進(jin)行加(jia)(jia)工(gong)。
此時, 將分度頭底(di)座在(zai)水(shui)平面(mian)旋轉一個(ge)(ge)α角,使銑(xian)刀廓形(xing)對稱線(xian)和齒坯軸線(xian)成(cheng)一個(ge)(ge)角度,同時適當(dang)移動(dong)(dong)橫(heng)向(xiang) 工作臺(tai)(移動(dong)(dong)量可以通過(guo)試(shi)切來確定),先將齒槽(cao)一側的(de)余量銑(xian)去,然后再將分度頭底(di)座反向(xiang)旋 轉2α角,橫(heng)向(xiang)工作臺(tai)也(ye)反向(xiang)移動(dong)(dong),銑(xian)削齒槽(cao)的(de)另一側面(mian)余量。