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B棟401
具體參數
拖泵銑齒方法和工藝過程
在普通臥式銑(xian)床上,采(cai)用(yong)帶有(you)轉盤(pan)的分度(du)頭進(jin)行(xing)分度(du)。具(ju)體(ti)方法是想(xiang)將齒(chi)(chi)(chi)坯固定(ding)在分度(du)頭上,見(jian) 調整(zheng)分度(du)頭傾角,將分度(du)頭扳起一個(ge)(ge)角度(du),該角度(du)等于錐(zhui)(zhui)齒(chi)(chi)(chi)輪根(gen)錐(zhui)(zhui)角δf,用(yong)切痕法使(shi)銑(xian)刀廓形 的對稱線對準齒(chi)(chi)(chi)坯的中(zhong)心(xin),調整(zheng)切削深度(du),以大端(duan)為(wei)基(ji)準,將工(gong)作臺升高一個(ge)(ge)大端(duan)全(quan)齒(chi)(chi)(chi)高后,先(xian)銑(xian)齒(chi)(chi)(chi) 槽(cao)的中(zhong)部(bu),由于此時采(cai)用(yong)的直(zhi)齒(chi)(chi)(chi)錐(zhui)(zhui)齒(chi)(chi)(chi)輪成形銑(xian)刀的厚度(du)是按照(zhao)略小(xiao)于錐(zhui)(zhui)齒(chi)(chi)(chi)輪小(xiao)端(duan)的齒(chi)(chi)(chi)槽(cao)寬度(du)設計(ji)的, 所以齒(chi)(chi)(chi)槽(cao)中(zhong)部(bu)銑(xian)好后,齒(chi)(chi)(chi)輪大端(duan)和(he)兩側面(mian)還有(you)一定(ding)加工(gong)余量,因此,還要對上述(shu)部(bu)位(wei)進(jin)行(xing)加工(gong)。
此時, 將分(fen)(fen)度頭(tou)底(di)座(zuo)在水(shui)平面旋轉(zhuan)(zhuan)一個α角,使銑刀廓(kuo)形對稱線和(he)齒(chi)(chi)坯軸線成一個角度,同時適當移動(dong)橫向 工作臺(tai)(移動(dong)量(liang)可以通(tong)過試切(qie)來確定),先將齒(chi)(chi)槽一側(ce)的余量(liang)銑去(qu),然后再將分(fen)(fen)度頭(tou)底(di)座(zuo)反(fan)向旋 轉(zhuan)(zhuan)2α角,橫向工作臺(tai)也反(fan)向移動(dong),銑削齒(chi)(chi)槽的另一側(ce)面余量(liang)。