精(jing)(jing)密(mi)零(ling)件(jian)行(xing)業的(de)(de)(de)(de)(de)標(biao)準是(shi)非常(chang)(chang)嚴格(ge)的(de)(de)(de)(de)(de),加(jia)工(gong)(gong)(gong)時候(hou)(hou)有進(jin)刀(dao)(dao),出刀(dao)(dao)等不同(tong)的(de)(de)(de)(de)(de)流(liu)程工(gong)(gong)(gong)序。尺寸也(ye)會(hui)(hui)(hui)根據產品有不同(tong)的(de)(de)(de)(de)(de)具(ju)體需(xu)求(qiu)(qiu)(qiu),加(jia)工(gong)(gong)(gong)精(jing)(jing)度的(de)(de)(de)(de)(de)要(yao)求(qiu)(qiu)(qiu)也(ye)會(hui)(hui)(hui)不同(tong),總體來說精(jing)(jing)密(mi)加(jia)工(gong)(gong)(gong)精(jing)(jing)度的(de)(de)(de)(de)(de)要(yao)求(qiu)(qiu)(qiu)是(shi)非常(chang)(chang)高的(de)(de)(de)(de)(de),有時候(hou)(hou)甚至精(jing)(jing)確到1mm下的(de)(de)(de)(de)(de)多少微米差(cha)別,尺寸如(ru)果差(cha)別很大產品就(jiu)會(hui)(hui)(hui)成(cheng)(cheng)為廢品,就(jiu)需(xu)要(yao)返(fan)工(gong)(gong)(gong)來達到要(yao)求(qiu)(qiu)(qiu),這個過程非常(chang)(chang)費時費力,有時候(hou)(hou)會(hui)(hui)(hui)使(shi)得所有的(de)(de)(de)(de)(de)原材(cai)料(liao)報廢,造成(cheng)(cheng)成(cheng)(cheng)本(ben)的(de)(de)(de)(de)(de)增加(jia),與此同(tong)時零(ling)件(jian)也(ye)必然是(shi)無法用(yong)了,因此精(jing)(jing)密(mi)零(ling)件(jian)加(jia)工(gong)(gong)(gong)是(shi)有很多要(yao)求(qiu)(qiu)(qiu)的(de)(de)(de)(de)(de)。那么精(jing)(jing)密(mi)零(ling)件(jian)加(jia)工(gong)(gong)(gong)有哪些要(yao)求(qiu)(qiu)(qiu)呢(ni)?
(1)通(tong)常為(wei)了確保零(ling)件的(de)(de)加工(gong)精(jing)度,粗(cu)零(ling)件與(yu)(yu)精(jing)密(mi)機械零(ling)件的(de)(de)加工(gong)必須分開來運行(xing),因為(wei)粗(cu)零(ling)件加工(gong)與(yu)(yu)精(jing)密(mi)零(ling)件加工(gong)的(de)(de)切削量(liang),夾緊力,發熱量(liang),工(gong)件所(suo)受的(de)(de)切削力都不一樣,如(ru)果粗(cu)加工(gong)與(yu)(yu)精(jing)密(mi)加工(gong)連(lian)續進行(xing),精(jing)密(mi)加工(gong)零(ling)件的(de)(de)精(jing)度會因為(wei)應力的(de)(de)不同(tong)而喪失。
(2)設備(bei)選用的合理性(xing)。粗(cu)零件的加工(gong)(gong)(gong)對加工(gong)(gong)(gong)精度(du)的要(yao)求(qiu)并不(bu)高,只是主要(yao)對加工(gong)(gong)(gong)余量(liang)切割,所(suo)以精密加工(gong)(gong)(gong)要(yao)求(qiu)在非常高精度(du)的機床加工(gong)(gong)(gong)。
(3)在精密零件加(jia)工工藝路(lu)線中,常(chang)安排(pai)有熱(re)處(chu)理工序(xu)。熱(re)處(chu)理工序(xu)位(wei)置的安排(pai)如下:為改(gai)善金屬的切削加(jia)工性能,如退火、正火、調質等,一(yi)般安排(pai)在機械(xie)零件加(jia)工前進行。
(4)一般(ban)來說精密零件加工(gong)幾乎都有熱處(chu)理(li)工(gong)序,熱處(chu)理(li)工(gong)序能夠改善金屬(shu)的切削加工(gong)性能。
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精(jing)密零件(jian)加工都有哪(na)些標準
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