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B棟401
具體參數
拖(tuo)泵(beng)銑(xian)齒方法和(he)工藝過(guo)程
在(zai)(zai)普通臥式銑(xian)床(chuang)上(shang),采用(yong)帶有(you)轉盤(pan)的(de)(de)分度(du)頭(tou)進行分度(du)。具體方(fang)法(fa)是(shi)想將齒(chi)(chi)坯固定(ding)在(zai)(zai)分度(du)頭(tou)上(shang),見(jian) 調整分度(du)頭(tou)傾(qing)角(jiao),將分度(du)頭(tou)扳(ban)起一(yi)個角(jiao)度(du),該角(jiao)度(du)等于錐齒(chi)(chi)輪根錐角(jiao)δf,用(yong)切痕(hen)法(fa)使銑(xian)刀廓形 的(de)(de)對(dui)稱線對(dui)準(zhun)齒(chi)(chi)坯的(de)(de)中(zhong)(zhong)心,調整切削深度(du),以大端為基準(zhun),將工(gong)(gong)作(zuo)臺升(sheng)高(gao)一(yi)個大端全(quan)齒(chi)(chi)高(gao)后,先銑(xian)齒(chi)(chi) 槽的(de)(de)中(zhong)(zhong)部(bu),由(you)于此時采用(yong)的(de)(de)直齒(chi)(chi)錐齒(chi)(chi)輪成(cheng)形銑(xian)刀的(de)(de)厚度(du)是(shi)按照略小(xiao)于錐齒(chi)(chi)輪小(xiao)端的(de)(de)齒(chi)(chi)槽寬度(du)設計(ji)的(de)(de), 所以齒(chi)(chi)槽中(zhong)(zhong)部(bu)銑(xian)好(hao)后,齒(chi)(chi)輪大端和(he)兩側面(mian)還(huan)有(you)一(yi)定(ding)加工(gong)(gong)余量,因此,還(huan)要對(dui)上(shang)述部(bu)位進行加工(gong)(gong)。
此時(shi), 將(jiang)分(fen)(fen)度(du)(du)頭(tou)底(di)(di)座在水平面旋轉(zhuan)一(yi)個(ge)α角,使(shi)銑刀(dao)廓形對稱線(xian)和(he)齒(chi)坯軸線(xian)成一(yi)個(ge)角度(du)(du),同時(shi)適當移(yi)動橫向(xiang) 工(gong)作臺(移(yi)動量可以通過試切來確定),先將(jiang)齒(chi)槽一(yi)側的余量銑去,然后再(zai)將(jiang)分(fen)(fen)度(du)(du)頭(tou)底(di)(di)座反向(xiang)旋 轉(zhuan)2α角,橫向(xiang)工(gong)作臺也反向(xiang)移(yi)動,銑削(xue)齒(chi)槽的另一(yi)側面余量。