隨著人們對機械加工的認知逐漸加深，目前許多的精密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，那么沈陽機械加工廠為您講解在機械加工是需要注意哪些問題呢？

1、粗(cu)加工與精加工要分開進行，這樣才能更好的保證機械加工精度。

粗加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)時(shi)切削量(liang)大，工(gong)(gong)(gong)(gong)件(jian)(jian)所(suo)受(shou)切削力(li)和(he)夾緊力(li)也(ye)大，發熱量(liang)也(ye)多，加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)表面會出現(xian)比較顯著的(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)硬化(hua)現(xian)象，工(gong)(gong)(gong)(gong)件(jian)(jian)內(nei)部也(ye)會存在(zai)較大的(de)(de)內(nei)應力(li)，如果粗加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)與(yu)精(jing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)連續進行，那么精(jing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)的(de)(de)零件(jian)(jian)的(de)(de)精(jing)度(du)會因(yin)為(wei)應力(li)的(de)(de)重新分布而受(shou)到影(ying)響。對于某(mou)些加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du)高的(de)(de)工(gong)(gong)(gong)(gong)件(jian)(jian)，在(zai)進行粗加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)應進行低溫退火或者時(shi)效處理消除內(nei)應力(li)，然后(hou)再進行精(jing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。

2、選用(yong)適(shi)當(dang)的機械(xie)加工設(she)備進行(xing)加工。

粗加(jia)(jia)工(gong)(gong)(gong)(gong)主要是(shi)為了(le)切掉(diao)大(da)分分的(de)機(ji)械(xie)(xie)加(jia)(jia)工(gong)(gong)(gong)(gong)余量，不需要較(jiao)高(gao)的(de)加(jia)(jia)工(gong)(gong)(gong)(gong)精度，所以粗加(jia)(jia)工(gong)(gong)(gong)(gong)可以選(xuan)(xuan)擇(ze)在(zai)功(gong)率較(jiao)大(da)、精度相對較(jiao)低的(de)機(ji)械(xie)(xie)加(jia)(jia)工(gong)(gong)(gong)(gong)設(she)(she)備上(shang)進行。精加(jia)(jia)工(gong)(gong)(gong)(gong)則要求在(zai)加(jia)(jia)工(gong)(gong)(gong)(gong)精度較(jiao)高(gao)的(de)機(ji)械(xie)(xie)加(jia)(jia)工(gong)(gong)(gong)(gong)設(she)(she)備上(shang)進行。粗加(jia)(jia)工(gong)(gong)(gong)(gong)與精加(jia)(jia)工(gong)(gong)(gong)(gong)在(zai)加(jia)(jia)工(gong)(gong)(gong)(gong)時選(xuan)(xuan)擇(ze)不同的(de)機(ji)械(xie)(xie)加(jia)(jia)工(gong)(gong)(gong)(gong)設(she)(she)備既(ji)能(neng)充分發(fa)揮設(she)(she)備能(neng)力又可以更好的(de)延長機(ji)床的(de)使用壽命(ming)，提高(gao)機(ji)械(xie)(xie)加(jia)(jia)工(gong)(gong)(gong)(gong)的(de)效(xiao)率。

3、進行合理的機械(xie)加工工藝選擇(ze)。

在進行機械(xie)加(jia)工工藝規劃(hua)時，熱(re)處(chu)(chu)理(li)(li)是非(fei)常重要的(de)(de)，不同(tong)(tong)機械(xie)加(jia)工工序應進行不同(tong)(tong)的(de)(de)熱(re)處(chu)(chu)理(li)(li)安排(pai)。在機械(xie)加(jia)工前為(wei)改善金(jin)屬(shu)的(de)(de)切削加(jia)工性(xing)能(neng)，需進行退火(huo)(huo)、正火(huo)(huo)、調質等熱(re)處(chu)(chu)理(li)(li)；在粗加(jia)工后為(wei)消除內應力，需進行時效處(chu)(chu)理(li)(li)、調質處(chu)(chu)理(li)(li)等熱(re)處(chu)(chu)理(li)(li)；在機械(xie)加(jia)工后為(wei)了提高工件的(de)(de)機械(xie)性(xing)能(neng)，需進行滲碳、淬火(huo)(huo)、回火(huo)(huo)等熱(re)處(chu)(chu)理(li)(li)。

在進行機械(xie)加(jia)工(gong)(gong)時應(ying)當注意以上(shang)的(de)幾個(ge)問(wen)題，這樣(yang)才能更好的(de)進行機械(xie)加(jia)工(gong)(gong)，才能理好的(de)提高機械(xie)加(jia)工(gong)(gong)的(de)質(zhi)量，才能更好的(de)提高機械(xie)加(jia)工(gong)(gong)的(de)效率(lv)。

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