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B棟401
具體參數
拖泵(beng)銑齒(chi)方法和工藝過程
在普(pu)通(tong)臥(wo)式銑床(chuang)上,采用(yong)帶有轉盤的分(fen)度(du)(du)頭進行(xing)分(fen)度(du)(du)。具(ju)體(ti)方(fang)法是想將齒(chi)坯固定(ding)在分(fen)度(du)(du)頭上,見 調整分(fen)度(du)(du)頭傾角(jiao),將分(fen)度(du)(du)頭扳起一個角(jiao)度(du)(du),該(gai)角(jiao)度(du)(du)等(deng)于(yu)錐(zhui)齒(chi)輪(lun)根錐(zhui)角(jiao)δf,用(yong)切痕法使銑刀廓(kuo)形(xing) 的對稱線對準(zhun)齒(chi)坯的中(zhong)心(xin),調整切削深度(du)(du),以大(da)端為基準(zhun),將工(gong)(gong)作臺升高一個大(da)端全(quan)齒(chi)高后,先銑齒(chi) 槽(cao)(cao)的中(zhong)部,由于(yu)此時采用(yong)的直齒(chi)錐(zhui)齒(chi)輪(lun)成(cheng)形(xing)銑刀的厚(hou)度(du)(du)是按照略小(xiao)于(yu)錐(zhui)齒(chi)輪(lun)小(xiao)端的齒(chi)槽(cao)(cao)寬度(du)(du)設計的, 所以齒(chi)槽(cao)(cao)中(zhong)部銑好后,齒(chi)輪(lun)大(da)端和(he)兩側(ce)面(mian)還(huan)有一定(ding)加工(gong)(gong)余量,因此,還(huan)要對上述部位進行(xing)加工(gong)(gong)。
此時, 將分度(du)頭底座(zuo)在水(shui)平(ping)面旋轉一(yi)個(ge)α角,使(shi)銑(xian)(xian)刀(dao)廓形對稱線(xian)和齒坯軸(zhou)線(xian)成一(yi)個(ge)角度(du),同(tong)時適當移動橫(heng)向(xiang) 工(gong)作(zuo)臺(tai)(移動量(liang)可(ke)以(yi)通過試切來(lai)確定),先(xian)將齒槽一(yi)側(ce)的余(yu)量(liang)銑(xian)(xian)去,然后再將分度(du)頭底座(zuo)反(fan)向(xiang)旋 轉2α角,橫(heng)向(xiang)工(gong)作(zuo)臺(tai)也反(fan)向(xiang)移動,銑(xian)(xian)削齒槽的另一(yi)側(ce)面余(yu)量(liang)。