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B棟401
具體參數
拖泵銑齒方法和工藝過程(cheng)
在普通臥(wo)式銑(xian)(xian)床上(shang),采用(yong)(yong)帶有轉盤的(de)分(fen)(fen)度(du)(du)頭(tou)進行分(fen)(fen)度(du)(du)。具體方法是想(xiang)將齒(chi)(chi)(chi)坯(pi)固定在分(fen)(fen)度(du)(du)頭(tou)上(shang),見 調整分(fen)(fen)度(du)(du)頭(tou)傾(qing)角(jiao),將分(fen)(fen)度(du)(du)頭(tou)扳起一(yi)(yi)個角(jiao)度(du)(du),該角(jiao)度(du)(du)等于(yu)錐(zhui)齒(chi)(chi)(chi)輪(lun)根錐(zhui)角(jiao)δf,用(yong)(yong)切(qie)痕(hen)法使銑(xian)(xian)刀(dao)廓形(xing) 的(de)對稱線(xian)對準齒(chi)(chi)(chi)坯(pi)的(de)中(zhong)心,調整切(qie)削深(shen)度(du)(du),以(yi)大(da)(da)端(duan)(duan)為基(ji)準,將工作臺升高(gao)一(yi)(yi)個大(da)(da)端(duan)(duan)全(quan)齒(chi)(chi)(chi)高(gao)后(hou),先(xian)銑(xian)(xian)齒(chi)(chi)(chi) 槽(cao)的(de)中(zhong)部(bu),由于(yu)此時采用(yong)(yong)的(de)直齒(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)輪(lun)成(cheng)形(xing)銑(xian)(xian)刀(dao)的(de)厚度(du)(du)是按照略小于(yu)錐(zhui)齒(chi)(chi)(chi)輪(lun)小端(duan)(duan)的(de)齒(chi)(chi)(chi)槽(cao)寬度(du)(du)設(she)計的(de), 所(suo)以(yi)齒(chi)(chi)(chi)槽(cao)中(zhong)部(bu)銑(xian)(xian)好后(hou),齒(chi)(chi)(chi)輪(lun)大(da)(da)端(duan)(duan)和兩側面還有一(yi)(yi)定加(jia)工余量,因此,還要對上(shang)述(shu)部(bu)位進行加(jia)工。
此時, 將分度頭(tou)底(di)座(zuo)在水平面旋(xuan)轉(zhuan)一個(ge)α角(jiao),使銑(xian)(xian)刀廓形(xing)對稱線和(he)齒坯軸線成一個(ge)角(jiao)度,同時適當移動(dong)(dong)橫向(xiang)(xiang) 工作臺(移動(dong)(dong)量(liang)(liang)可(ke)以通過試(shi)切來確定(ding)),先將齒槽(cao)一側的(de)余(yu)量(liang)(liang)銑(xian)(xian)去,然(ran)后再(zai)將分度頭(tou)底(di)座(zuo)反(fan)向(xiang)(xiang)旋(xuan) 轉(zhuan)2α角(jiao),橫向(xiang)(xiang)工作臺也(ye)反(fan)向(xiang)(xiang)移動(dong)(dong),銑(xian)(xian)削(xue)齒槽(cao)的(de)另一側面余(yu)量(liang)(liang)。