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具體參數
拖泵銑齒方法(fa)和工藝(yi)過(guo)程(cheng)
在普(pu)通臥式銑(xian)床上,采用(yong)帶有轉盤(pan)的(de)(de)分(fen)(fen)度(du)(du)(du)(du)頭(tou)(tou)進行(xing)分(fen)(fen)度(du)(du)(du)(du)。具體方法(fa)是想將齒(chi)坯固定(ding)在分(fen)(fen)度(du)(du)(du)(du)頭(tou)(tou)上,見 調(diao)整分(fen)(fen)度(du)(du)(du)(du)頭(tou)(tou)傾(qing)角(jiao),將分(fen)(fen)度(du)(du)(du)(du)頭(tou)(tou)扳(ban)起(qi)一(yi)個(ge)角(jiao)度(du)(du)(du)(du),該角(jiao)度(du)(du)(du)(du)等于錐(zhui)齒(chi)輪(lun)根(gen)錐(zhui)角(jiao)δf,用(yong)切痕法(fa)使銑(xian)刀(dao)廓(kuo)形 的(de)(de)對稱線(xian)對準(zhun)齒(chi)坯的(de)(de)中(zhong)(zhong)(zhong)心,調(diao)整切削深(shen)度(du)(du)(du)(du),以(yi)大(da)(da)端(duan)(duan)為(wei)基準(zhun),將工作臺升高一(yi)個(ge)大(da)(da)端(duan)(duan)全齒(chi)高后,先銑(xian)齒(chi) 槽(cao)的(de)(de)中(zhong)(zhong)(zhong)部(bu),由于此時采用(yong)的(de)(de)直齒(chi)錐(zhui)齒(chi)輪(lun)成形銑(xian)刀(dao)的(de)(de)厚度(du)(du)(du)(du)是按(an)照略小(xiao)于錐(zhui)齒(chi)輪(lun)小(xiao)端(duan)(duan)的(de)(de)齒(chi)槽(cao)寬度(du)(du)(du)(du)設計的(de)(de), 所以(yi)齒(chi)槽(cao)中(zhong)(zhong)(zhong)部(bu)銑(xian)好后,齒(chi)輪(lun)大(da)(da)端(duan)(duan)和兩側面還有一(yi)定(ding)加工余量,因此,還要對上述部(bu)位(wei)進行(xing)加工。
此(ci)時, 將分度頭底座在水平面旋(xuan)(xuan)轉一(yi)(yi)個α角,使銑(xian)刀廓形對稱線和齒坯軸線成一(yi)(yi)個角度,同時適當移(yi)(yi)動(dong)橫向(xiang) 工(gong)(gong)作臺(tai)(tai)(移(yi)(yi)動(dong)量(liang)可(ke)以通過(guo)試切來確定(ding)),先將齒槽一(yi)(yi)側(ce)的余(yu)量(liang)銑(xian)去,然后再(zai)將分度頭底座反向(xiang)旋(xuan)(xuan) 轉2α角,橫向(xiang)工(gong)(gong)作臺(tai)(tai)也(ye)反向(xiang)移(yi)(yi)動(dong),銑(xian)削(xue)齒槽的另一(yi)(yi)側(ce)面余(yu)量(liang)。