有關(guan)石(shi)墨(mo)電(dian)極(ji)加(jia)工(gong)精度(du)的(de)企(qi)業(ye)內控(kong)規範(fan)
為了(le)保證石(shi)墨(mo)電(dian)極(ji)加(jia)工(gong)精度(du)在(zai)電(dian)弧爐中(zhong)運用時(shi)銜接(jie)牢(lao)靠(kao),不松動(dong),不脫扣,不易折斷,石(shi)墨(mo)電(dian)極(ji)加(jia)工(gong)必須到(dao)達(da)較高的(de)精(jing)度(du),特(te)別(bie)是運用圓錐(zhui)形(xing)接頭的(de)石(shi)墨(mo)電(dian)極(ji)更(geng)為重(zhong)要。中(zhong)國(guo)石(shi)墨(mo)電(dian)極(ji)質(zhi)量(liang)規範(fan)中(zhong)關於(yu)尺度(du)誤(wu)差及螺(luo)紋形狀的(de)加(jia)工(gong)精度(du),僅(jin)僅(jin)規則(ze)了電(dian)極(ji)接頭孔(kong)直(zhi)徑(jing)正誤(wu)差的(de)最(zui)大(da)值和接(jie)頭直(zhi)徑(jing)負(fu)誤(wu)差的(de)最(zui)大(da)值,兩(liang)根(gen)電極(ji)銜接處(chu)端面(mian)空隙不大於0.5mm,加(jia)工(gong)本體與(yu)接頭孔(kong)中(zhong)心線誤(wu)差不大於3mm,但對(dui)其他(ta)方面(mian)(如螺(luo)距誤(wu)差、螺紋錐度誤(wu)差等)沒有(you)作出(chu)明確規則(ze)。因而(er)生產石(shi)墨(mo)電(dian)極(ji)的(de)工(gong)廠應(ying)該(gai)根(gen)據用戶(hu)的(de)運用要求(qiu)和本廠的(de)實(shi)際(ji)情(qing)況(kuang)擬(ni)定有(you)關(guan)石(shi)墨(mo)電(dian)極(ji)加(jia)工(gong)精度(du)的(de)企(qi)業(ye)內控(kong)規範(fan)。
運用壹般(ban)車床(chuang)加(jia)工(gong)石(shi)墨(mo)電(dian)極(ji),石(shi)墨(mo)電(dian)極(ji)加(jia)工(gong)精度(du)受(shou)車(che)床(chuang)自(zi)身精度的(de)影(ying)響(xiang),也和運用的(de)刀(dao)具有關,需(xu)要對(dui)壹般(ban)車床(chuang)加(jia)以(yi)恰當改(gai)造(zao),選擇適(shi)宜(yi)的(de)加(jia)工(gong)刀(dao)具和切(qie)削參數,才幹到(dao)達(da)加(jia)工(gong)要求(qiu),假如選(xuan)用專(zhuan)門規劃的(de)組(zu)合機(ji)床(chuang)加(jia)工(gong),精度(du)壹般(ban)可到(dao)達(da)如下水(shui)平:
1.加(jia)工(gong)電極(ji)本體(錐(zhui)形接頭銜(xian)接):
外(wai)徑(jing)圓錐(zhui)度(du)小(xiao)於(yu)0.5/2500mm
螺(luo)紋有用徑(jing)誤(wu)差00.1mm小(xiao)量(liang)
螺(luo)紋錐度1文
螺(luo)紋螺距誤(wu)差小(xiao)於(yu)0.02/50mm
螺(luo)紋深度誤(wu)差士0.01mm
端面(mian)不平度小(xiao)於(yu)0.05mm
2.加(jia)工(gong)接頭(錐(zhui)形接(jie)頭):
接(jie)頭有(you)用徑(jing)誤(wu)差0.03mm
錐度(du)誤(wu)差小(xiao)於(yu)+2
螺(luo)距誤(wu)差0.03/300mm
長(chang)度(du)誤(wu)差0~-2mm
兩端面(mian)平行(xing)度(du)誤(wu)差小(xiao)於(yu)0.1mm
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