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B棟(dong)401
具體參數
拖泵銑齒(chi)方法和(he)工藝過程
在普通臥式銑(xian)(xian)床上(shang),采用帶有(you)轉盤(pan)的(de)(de)分(fen)(fen)(fen)度(du)頭(tou)進行(xing)分(fen)(fen)(fen)度(du)。具(ju)體(ti)方法(fa)是(shi)(shi)想將(jiang)齒(chi)(chi)(chi)坯固定(ding)在分(fen)(fen)(fen)度(du)頭(tou)上(shang),見 調整(zheng)分(fen)(fen)(fen)度(du)頭(tou)傾角(jiao)(jiao),將(jiang)分(fen)(fen)(fen)度(du)頭(tou)扳起一個角(jiao)(jiao)度(du),該(gai)角(jiao)(jiao)度(du)等于(yu)(yu)錐(zhui)齒(chi)(chi)(chi)輪(lun)根(gen)錐(zhui)角(jiao)(jiao)δf,用切(qie)痕法(fa)使銑(xian)(xian)刀廓形(xing) 的(de)(de)對(dui)稱線(xian)對(dui)準齒(chi)(chi)(chi)坯的(de)(de)中(zhong)心(xin),調整(zheng)切(qie)削深(shen)度(du),以大端(duan)為(wei)基準,將(jiang)工(gong)(gong)作臺升高一個大端(duan)全(quan)齒(chi)(chi)(chi)高后,先銑(xian)(xian)齒(chi)(chi)(chi) 槽(cao)的(de)(de)中(zhong)部,由于(yu)(yu)此(ci)時采用的(de)(de)直齒(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)輪(lun)成形(xing)銑(xian)(xian)刀的(de)(de)厚度(du)是(shi)(shi)按照(zhao)略小(xiao)于(yu)(yu)錐(zhui)齒(chi)(chi)(chi)輪(lun)小(xiao)端(duan)的(de)(de)齒(chi)(chi)(chi)槽(cao)寬度(du)設計的(de)(de), 所以齒(chi)(chi)(chi)槽(cao)中(zhong)部銑(xian)(xian)好(hao)后,齒(chi)(chi)(chi)輪(lun)大端(duan)和兩側(ce)面還有(you)一定(ding)加(jia)工(gong)(gong)余量,因此(ci),還要對(dui)上(shang)述部位進行(xing)加(jia)工(gong)(gong)。
此時, 將分(fen)度頭底(di)(di)座(zuo)在(zai)水(shui)平面(mian)旋轉一(yi)個α角(jiao),使銑(xian)刀廓形(xing)對稱線和(he)齒(chi)(chi)坯軸線成一(yi)個角(jiao)度,同時適當移動橫向(xiang)(xiang) 工作臺(移動量可以通過試切來確定),先將齒(chi)(chi)槽(cao)(cao)一(yi)側的余量銑(xian)去,然后再(zai)將分(fen)度頭底(di)(di)座(zuo)反(fan)向(xiang)(xiang)旋 轉2α角(jiao),橫向(xiang)(xiang)工作臺也反(fan)向(xiang)(xiang)移動,銑(xian)削齒(chi)(chi)槽(cao)(cao)的另(ling)一(yi)側面(mian)余量。