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B棟401
具體參數
拖(tuo)泵銑齒(chi)方(fang)法和工藝過程
在普通臥式銑(xian)(xian)床上,采(cai)用(yong)帶有轉盤的(de)(de)(de)分(fen)度(du)頭(tou)(tou)進行分(fen)度(du)。具體方法是想(xiang)將齒(chi)(chi)(chi)(chi)(chi)坯固定(ding)在分(fen)度(du)頭(tou)(tou)上,見 調整分(fen)度(du)頭(tou)(tou)傾角(jiao),將分(fen)度(du)頭(tou)(tou)扳(ban)起一(yi)個(ge)角(jiao)度(du),該角(jiao)度(du)等于錐(zhui)(zhui)齒(chi)(chi)(chi)(chi)(chi)輪根錐(zhui)(zhui)角(jiao)δf,用(yong)切痕(hen)法使銑(xian)(xian)刀廓(kuo)形 的(de)(de)(de)對稱(cheng)線(xian)對準齒(chi)(chi)(chi)(chi)(chi)坯的(de)(de)(de)中心,調整切削(xue)深(shen)度(du),以大端為(wei)基(ji)準,將工(gong)作(zuo)臺(tai)升高(gao)一(yi)個(ge)大端全齒(chi)(chi)(chi)(chi)(chi)高(gao)后(hou),先銑(xian)(xian)齒(chi)(chi)(chi)(chi)(chi) 槽(cao)的(de)(de)(de)中部(bu),由于此時(shi)采(cai)用(yong)的(de)(de)(de)直(zhi)齒(chi)(chi)(chi)(chi)(chi)錐(zhui)(zhui)齒(chi)(chi)(chi)(chi)(chi)輪成形銑(xian)(xian)刀的(de)(de)(de)厚度(du)是按照略小于錐(zhui)(zhui)齒(chi)(chi)(chi)(chi)(chi)輪小端的(de)(de)(de)齒(chi)(chi)(chi)(chi)(chi)槽(cao)寬度(du)設計的(de)(de)(de), 所以齒(chi)(chi)(chi)(chi)(chi)槽(cao)中部(bu)銑(xian)(xian)好后(hou),齒(chi)(chi)(chi)(chi)(chi)輪大端和兩側面還有一(yi)定(ding)加工(gong)余量,因(yin)此,還要(yao)對上述部(bu)位進行加工(gong)。
此時, 將分度頭底座在水平面(mian)(mian)旋(xuan)轉一個α角(jiao),使銑(xian)刀廓形對(dui)稱(cheng)線和齒坯軸線成一個角(jiao)度,同時適當移動(dong)橫(heng)向 工作臺(tai)(tai)(移動(dong)量(liang)可以通過試切來確定),先將齒槽(cao)一側的余量(liang)銑(xian)去(qu),然(ran)后再將分度頭底座反(fan)向旋(xuan) 轉2α角(jiao),橫(heng)向工作臺(tai)(tai)也反(fan)向移動(dong),銑(xian)削(xue)齒槽(cao)的另(ling)一側面(mian)(mian)余量(liang)。