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B棟401
具體參數
拖泵銑齒方法和工藝過程(cheng)
在(zai)普通臥式(shi)銑床上,采用(yong)帶有轉盤(pan)的分(fen)(fen)(fen)(fen)度(du)(du)(du)(du)頭進行分(fen)(fen)(fen)(fen)度(du)(du)(du)(du)。具體方法是想將齒(chi)(chi)(chi)(chi)(chi)坯(pi)固定在(zai)分(fen)(fen)(fen)(fen)度(du)(du)(du)(du)頭上,見 調(diao)(diao)整分(fen)(fen)(fen)(fen)度(du)(du)(du)(du)頭傾角(jiao),將分(fen)(fen)(fen)(fen)度(du)(du)(du)(du)頭扳起(qi)一個角(jiao)度(du)(du)(du)(du),該角(jiao)度(du)(du)(du)(du)等(deng)于(yu)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)輪(lun)根錐(zhui)角(jiao)δf,用(yong)切(qie)痕(hen)法使(shi)銑刀廓(kuo)形 的對(dui)稱線(xian)對(dui)準齒(chi)(chi)(chi)(chi)(chi)坯(pi)的中心,調(diao)(diao)整切(qie)削深(shen)度(du)(du)(du)(du),以(yi)大(da)(da)端為(wei)基準,將工作臺(tai)升高一個大(da)(da)端全(quan)齒(chi)(chi)(chi)(chi)(chi)高后(hou),先銑齒(chi)(chi)(chi)(chi)(chi) 槽(cao)(cao)的中部(bu)(bu),由于(yu)此時采用(yong)的直(zhi)齒(chi)(chi)(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)輪(lun)成形銑刀的厚度(du)(du)(du)(du)是按照略小于(yu)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)輪(lun)小端的齒(chi)(chi)(chi)(chi)(chi)槽(cao)(cao)寬度(du)(du)(du)(du)設計的, 所以(yi)齒(chi)(chi)(chi)(chi)(chi)槽(cao)(cao)中部(bu)(bu)銑好后(hou),齒(chi)(chi)(chi)(chi)(chi)輪(lun)大(da)(da)端和兩側(ce)面還(huan)有一定加(jia)工余量,因(yin)此,還(huan)要對(dui)上述(shu)部(bu)(bu)位(wei)進行加(jia)工。
此時, 將分度(du)頭底(di)座(zuo)在(zai)水(shui)平面旋轉一個(ge)α角,使銑(xian)(xian)刀廓形對稱線和(he)齒坯軸線成一個(ge)角度(du),同(tong)時適當(dang)移動(dong)橫(heng)(heng)向(xiang) 工(gong)作臺(移動(dong)量(liang)可以通過(guo)試切來確定),先(xian)將齒槽一側的(de)余量(liang)銑(xian)(xian)去(qu),然(ran)后再(zai)將分度(du)頭底(di)座(zuo)反(fan)向(xiang)旋 轉2α角,橫(heng)(heng)向(xiang)工(gong)作臺也反(fan)向(xiang)移動(dong),銑(xian)(xian)削齒槽的(de)另一側面余量(liang)。