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B棟401
具體參數
拖(tuo)泵銑齒方法和工藝(yi)過程
在普通臥式銑(xian)床上,采用(yong)帶有轉盤的(de)分度(du)(du)頭(tou)進行(xing)分度(du)(du)。具(ju)體方法是想將齒(chi)(chi)(chi)(chi)坯固定在分度(du)(du)頭(tou)上,見 調整分度(du)(du)頭(tou)傾角,將分度(du)(du)頭(tou)扳(ban)起一個(ge)角度(du)(du),該角度(du)(du)等于(yu)錐齒(chi)(chi)(chi)(chi)輪(lun)根錐角δf,用(yong)切痕法使銑(xian)刀(dao)廓形 的(de)對(dui)稱(cheng)線對(dui)準(zhun)齒(chi)(chi)(chi)(chi)坯的(de)中(zhong)(zhong)心,調整切削深度(du)(du),以大(da)端為基準(zhun),將工作臺升(sheng)高(gao)(gao)一個(ge)大(da)端全齒(chi)(chi)(chi)(chi)高(gao)(gao)后,先銑(xian)齒(chi)(chi)(chi)(chi) 槽的(de)中(zhong)(zhong)部,由于(yu)此(ci)時采用(yong)的(de)直齒(chi)(chi)(chi)(chi)錐齒(chi)(chi)(chi)(chi)輪(lun)成形銑(xian)刀(dao)的(de)厚度(du)(du)是按照略小(xiao)于(yu)錐齒(chi)(chi)(chi)(chi)輪(lun)小(xiao)端的(de)齒(chi)(chi)(chi)(chi)槽寬度(du)(du)設計的(de), 所以齒(chi)(chi)(chi)(chi)槽中(zhong)(zhong)部銑(xian)好后,齒(chi)(chi)(chi)(chi)輪(lun)大(da)端和兩側面還有一定加工余量,因此(ci),還要對(dui)上述部位進行(xing)加工。
此(ci)時, 將分度頭(tou)底座在(zai)水平面(mian)旋(xuan)轉(zhuan)一個(ge)(ge)α角,使(shi)銑(xian)刀(dao)廓形對稱線(xian)和(he)齒(chi)坯軸線(xian)成一個(ge)(ge)角度,同(tong)時適當移(yi)動橫向 工作臺(tai)(移(yi)動量可以通(tong)過試切來確定),先將齒(chi)槽一側的(de)余(yu)(yu)量銑(xian)去,然后再(zai)將分度頭(tou)底座反(fan)向旋(xuan) 轉(zhuan)2α角,橫向工作臺(tai)也反(fan)向移(yi)動,銑(xian)削(xue)齒(chi)槽的(de)另一側面(mian)余(yu)(yu)量。