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B棟401
具體參數
拖泵銑齒方(fang)法和(he)工(gong)藝過程(cheng)
在(zai)普通(tong)臥式(shi)銑床上,采用(yong)帶有(you)轉盤的(de)分(fen)度(du)(du)(du)(du)(du)頭(tou)進行分(fen)度(du)(du)(du)(du)(du)。具體方法是(shi)(shi)想將齒(chi)(chi)坯固(gu)定在(zai)分(fen)度(du)(du)(du)(du)(du)頭(tou)上,見 調(diao)整分(fen)度(du)(du)(du)(du)(du)頭(tou)傾角,將分(fen)度(du)(du)(du)(du)(du)頭(tou)扳起一(yi)(yi)個角度(du)(du)(du)(du)(du),該角度(du)(du)(du)(du)(du)等于(yu)錐(zhui)齒(chi)(chi)輪(lun)根錐(zhui)角δf,用(yong)切(qie)痕法使銑刀廓形(xing) 的(de)對(dui)稱線(xian)對(dui)準齒(chi)(chi)坯的(de)中(zhong)(zhong)心(xin),調(diao)整切(qie)削深度(du)(du)(du)(du)(du),以(yi)大(da)端(duan)(duan)為基準,將工(gong)作臺升高(gao)一(yi)(yi)個大(da)端(duan)(duan)全齒(chi)(chi)高(gao)后,先(xian)銑齒(chi)(chi) 槽的(de)中(zhong)(zhong)部(bu),由(you)于(yu)此時采用(yong)的(de)直齒(chi)(chi)錐(zhui)齒(chi)(chi)輪(lun)成形(xing)銑刀的(de)厚度(du)(du)(du)(du)(du)是(shi)(shi)按照略(lve)小于(yu)錐(zhui)齒(chi)(chi)輪(lun)小端(duan)(duan)的(de)齒(chi)(chi)槽寬度(du)(du)(du)(du)(du)設計的(de), 所以(yi)齒(chi)(chi)槽中(zhong)(zhong)部(bu)銑好后,齒(chi)(chi)輪(lun)大(da)端(duan)(duan)和兩側面還有(you)一(yi)(yi)定加(jia)工(gong)余(yu)量,因(yin)此,還要對(dui)上述部(bu)位進行加(jia)工(gong)。
此(ci)時(shi), 將分度(du)頭底座在水平面旋轉一(yi)(yi)(yi)個(ge)α角,使銑(xian)刀廓形對稱線(xian)和齒坯(pi)軸線(xian)成一(yi)(yi)(yi)個(ge)角度(du),同時(shi)適(shi)當移(yi)動(dong)橫向(xiang)(xiang) 工(gong)作臺(tai)(移(yi)動(dong)量(liang)可以(yi)通過試切來確(que)定(ding)),先(xian)將齒槽一(yi)(yi)(yi)側的余量(liang)銑(xian)去,然后再將分度(du)頭底座反向(xiang)(xiang)旋 轉2α角,橫向(xiang)(xiang)工(gong)作臺(tai)也(ye)反向(xiang)(xiang)移(yi)動(dong),銑(xian)削齒槽的另一(yi)(yi)(yi)側面余量(liang)。