精(jing)(jing)密零(ling)(ling)件行業的(de)(de)標準是(shi)(shi)非(fei)常嚴格的(de)(de),加工(gong)(gong)時(shi)候有(you)進刀(dao),出刀(dao)等不同(tong)(tong)(tong)的(de)(de)流程(cheng)工(gong)(gong)序。尺寸(cun)也(ye)(ye)會根據產品有(you)不同(tong)(tong)(tong)的(de)(de)具(ju)體需(xu)求(qiu),加工(gong)(gong)精(jing)(jing)度(du)的(de)(de)要(yao)(yao)求(qiu)也(ye)(ye)會不同(tong)(tong)(tong),總體來說精(jing)(jing)密加工(gong)(gong)精(jing)(jing)度(du)的(de)(de)要(yao)(yao)求(qiu)是(shi)(shi)非(fei)常高的(de)(de),有(you)時(shi)候甚至精(jing)(jing)確到1mm下(xia)的(de)(de)多少微米差別,尺寸(cun)如果差別很大產品就會成為廢品,就需(xu)要(yao)(yao)返工(gong)(gong)來達到要(yao)(yao)求(qiu),這(zhe)個(ge)過程(cheng)非(fei)常費時(shi)費力,有(you)時(shi)候會使得所有(you)的(de)(de)原材料報廢,造成成本的(de)(de)增加,與(yu)此同(tong)(tong)(tong)時(shi)零(ling)(ling)件也(ye)(ye)必然是(shi)(shi)無法用了,因此精(jing)(jing)密零(ling)(ling)件加工(gong)(gong)是(shi)(shi)有(you)很多要(yao)(yao)求(qiu)的(de)(de)。那么精(jing)(jing)密零(ling)(ling)件加工(gong)(gong)有(you)哪些要(yao)(yao)求(qiu)呢?
(1)通常(chang)為(wei)了確(que)保零(ling)件(jian)的(de)加(jia)(jia)工(gong)(gong)精(jing)(jing)度(du),粗零(ling)件(jian)與精(jing)(jing)密(mi)(mi)機械零(ling)件(jian)的(de)加(jia)(jia)工(gong)(gong)必須分開(kai)來運行(xing),因為(wei)粗零(ling)件(jian)加(jia)(jia)工(gong)(gong)與精(jing)(jing)密(mi)(mi)零(ling)件(jian)加(jia)(jia)工(gong)(gong)的(de)切削(xue)(xue)量,夾緊力,發熱量,工(gong)(gong)件(jian)所(suo)受的(de)切削(xue)(xue)力都不一樣,如果(guo)粗加(jia)(jia)工(gong)(gong)與精(jing)(jing)密(mi)(mi)加(jia)(jia)工(gong)(gong)連續進(jin)行(xing),精(jing)(jing)密(mi)(mi)加(jia)(jia)工(gong)(gong)零(ling)件(jian)的(de)精(jing)(jing)度(du)會因為(wei)應力的(de)不同(tong)而(er)喪失。
(2)設備選(xuan)用的(de)合理性。粗零(ling)件的(de)加(jia)(jia)工對加(jia)(jia)工精(jing)度(du)的(de)要求并不(bu)高,只是主要對加(jia)(jia)工余量切(qie)割,所(suo)以精(jing)密加(jia)(jia)工要求在非常(chang)高精(jing)度(du)的(de)機床加(jia)(jia)工。
(3)在精密零(ling)件加工(gong)工(gong)藝路線中(zhong),常安排(pai)有熱處(chu)理工(gong)序。熱處(chu)理工(gong)序位置的安排(pai)如(ru)下:為改善金(jin)屬的切(qie)削加工(gong)性(xing)能,如(ru)退火(huo)、正(zheng)火(huo)、調質等(deng),一般安排(pai)在機械零(ling)件加工(gong)前進行。
(4)一般來說精密零件加工(gong)幾乎都有熱處理工(gong)序(xu),熱處理工(gong)序(xu)能夠(gou)改善金屬(shu)的切削加工(gong)性能。
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精密零件加工都(dou)有哪些標準
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