隨著人們對沈陽機械加工的認知逐漸加深，目前許多的精準零部件加工都采用機械加工，在機械加工時會遇到各種各樣的問題，那么在機械加工是需要注意哪些問題呢？

1、粗(cu)加工與精(jing)加工要分開進行，這樣才(cai)能更(geng)好的保證(zheng)機械加工精(jing)度。

粗加(jia)(jia)工(gong)(gong)(gong)(gong)時(shi)切削(xue)量大(da)(da)，工(gong)(gong)(gong)(gong)件(jian)(jian)所(suo)受切削(xue)力(li)(li)(li)(li)和(he)夾緊力(li)(li)(li)(li)也大(da)(da)，發熱量也多，加(jia)(jia)工(gong)(gong)(gong)(gong)表(biao)面會出現比較顯(xian)著的(de)(de)加(jia)(jia)工(gong)(gong)(gong)(gong)硬化現象，工(gong)(gong)(gong)(gong)件(jian)(jian)內部也會存在(zai)較大(da)(da)的(de)(de)內應(ying)(ying)力(li)(li)(li)(li)，如(ru)果粗加(jia)(jia)工(gong)(gong)(gong)(gong)與精加(jia)(jia)工(gong)(gong)(gong)(gong)連續(xu)進行，那么精加(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)的(de)(de)零件(jian)(jian)的(de)(de)精度(du)會因為應(ying)(ying)力(li)(li)(li)(li)的(de)(de)重新分布而受到(dao)影響。對于某(mou)些加(jia)(jia)工(gong)(gong)(gong)(gong)精度(du)高的(de)(de)工(gong)(gong)(gong)(gong)件(jian)(jian)，在(zai)進行粗加(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)應(ying)(ying)進行低溫(wen)退火或者時(shi)效處理(li)消除內應(ying)(ying)力(li)(li)(li)(li)，然后(hou)再進行精加(jia)(jia)工(gong)(gong)(gong)(gong)。

2、選(xuan)用(yong)適當的機械加工設備(bei)進(jin)行加工。

粗(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)主要是為了切掉大分(fen)分(fen)的(de)(de)機械(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)余量，不(bu)需要較高(gao)(gao)的(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)精(jing)(jing)(jing)度(du)，所以粗(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)可以選(xuan)擇(ze)在功率較大、精(jing)(jing)(jing)度(du)相對較低(di)的(de)(de)機械(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)設備(bei)(bei)上(shang)進行。精(jing)(jing)(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)則要求在加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)精(jing)(jing)(jing)度(du)較高(gao)(gao)的(de)(de)機械(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)設備(bei)(bei)上(shang)進行。粗(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)與精(jing)(jing)(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)在加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)時選(xuan)擇(ze)不(bu)同的(de)(de)機械(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)設備(bei)(bei)既能充(chong)分(fen)發揮設備(bei)(bei)能力又可以更好(hao)的(de)(de)延長機床的(de)(de)使用壽命，提高(gao)(gao)機械(xie)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)的(de)(de)效率。

3、進行合理(li)的機械加(jia)工工藝(yi)選擇。

在進(jin)行(xing)(xing)機(ji)(ji)械(xie)加(jia)(jia)工(gong)(gong)工(gong)(gong)藝規劃時，熱處(chu)理(li)(li)(li)是非常重(zhong)要的(de)，不同(tong)機(ji)(ji)械(xie)加(jia)(jia)工(gong)(gong)工(gong)(gong)序應進(jin)行(xing)(xing)不同(tong)的(de)熱處(chu)理(li)(li)(li)安排。在機(ji)(ji)械(xie)加(jia)(jia)工(gong)(gong)前為改(gai)善(shan)金屬的(de)切削加(jia)(jia)工(gong)(gong)性能(neng)，需進(jin)行(xing)(xing)退火(huo)、正火(huo)、調(diao)質等熱處(chu)理(li)(li)(li)；在粗(cu)加(jia)(jia)工(gong)(gong)后(hou)(hou)為消除內應力，需進(jin)行(xing)(xing)時效處(chu)理(li)(li)(li)、調(diao)質處(chu)理(li)(li)(li)等熱處(chu)理(li)(li)(li)；在機(ji)(ji)械(xie)加(jia)(jia)工(gong)(gong)后(hou)(hou)為了提(ti)高工(gong)(gong)件的(de)機(ji)(ji)械(xie)性能(neng)，需進(jin)行(xing)(xing)滲碳、淬(cui)火(huo)、回火(huo)等熱處(chu)理(li)(li)(li)。

在進行機(ji)械加工(gong)時應當注(zhu)意以上的幾個問題，這(zhe)樣(yang)才(cai)能更(geng)(geng)好的進行機(ji)械加工(gong)，才(cai)能理好的提高(gao)機(ji)械加工(gong)的質量(liang)，才(cai)能更(geng)(geng)好的提高(gao)機(ji)械加工(gong)的效率。

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