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B棟401
具體參數
拖泵銑齒方法和工藝過程
在(zai)普通臥式銑(xian)床上(shang),采用(yong)帶(dai)有(you)轉盤的(de)分度(du)(du)(du)頭(tou)進(jin)行分度(du)(du)(du)。具(ju)體方法(fa)(fa)是想將(jiang)(jiang)齒(chi)(chi)(chi)(chi)坯(pi)固定在(zai)分度(du)(du)(du)頭(tou)上(shang),見 調整分度(du)(du)(du)頭(tou)傾(qing)角,將(jiang)(jiang)分度(du)(du)(du)頭(tou)扳起一(yi)(yi)個角度(du)(du)(du),該角度(du)(du)(du)等于錐齒(chi)(chi)(chi)(chi)輪(lun)根錐角δf,用(yong)切(qie)(qie)痕法(fa)(fa)使(shi)銑(xian)刀(dao)廓形(xing) 的(de)對(dui)稱線對(dui)準(zhun)齒(chi)(chi)(chi)(chi)坯(pi)的(de)中(zhong)心,調整切(qie)(qie)削深度(du)(du)(du),以大端(duan)為(wei)基準(zhun),將(jiang)(jiang)工作臺(tai)升高一(yi)(yi)個大端(duan)全齒(chi)(chi)(chi)(chi)高后,先銑(xian)齒(chi)(chi)(chi)(chi) 槽的(de)中(zhong)部,由于此(ci)(ci)時采用(yong)的(de)直齒(chi)(chi)(chi)(chi)錐齒(chi)(chi)(chi)(chi)輪(lun)成形(xing)銑(xian)刀(dao)的(de)厚度(du)(du)(du)是按照略小于錐齒(chi)(chi)(chi)(chi)輪(lun)小端(duan)的(de)齒(chi)(chi)(chi)(chi)槽寬度(du)(du)(du)設計的(de), 所以齒(chi)(chi)(chi)(chi)槽中(zhong)部銑(xian)好(hao)后,齒(chi)(chi)(chi)(chi)輪(lun)大端(duan)和兩(liang)側面(mian)還有(you)一(yi)(yi)定加工余量,因此(ci)(ci),還要對(dui)上(shang)述部位進(jin)行加工。
此時(shi), 將(jiang)分度(du)(du)頭(tou)(tou)底(di)(di)座在(zai)水平面旋轉(zhuan)一(yi)(yi)個α角(jiao),使銑(xian)刀廓形(xing)對稱線(xian)和(he)齒坯(pi)軸線(xian)成一(yi)(yi)個角(jiao)度(du)(du),同(tong)時(shi)適當移動橫向 工(gong)作臺(移動量可以(yi)通(tong)過試切來確(que)定),先將(jiang)齒槽一(yi)(yi)側的余(yu)量銑(xian)去,然后(hou)再將(jiang)分度(du)(du)頭(tou)(tou)底(di)(di)座反向旋 轉(zhuan)2α角(jiao),橫向工(gong)作臺也反向移動,銑(xian)削(xue)齒槽的另一(yi)(yi)側面余(yu)量。