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 如何(he)進(jin)行機(ji)械加(jia)(jia)(jia)(jia)工(gong)工(gong)序(xu)(xu)的(de)設計(ji)？東(dong)莞(guan)機(ji)械加(jia)(jia)(jia)(jia)工(gong)工(gong)序(xu)(xu)的(de)定(ding)義是(shi)什么？很(hen)多機(ji)械加(jia)(jia)(jia)(jia)工(gong)廠廠家都會有這樣一(yi)個(ge)(ge)問(wen)題(ti)，對(dui)機(ji)械加(jia)(jia)(jia)(jia)工(gong)工(gong)序(xu)(xu)有自己的(de)理(li)解。所謂(wei)機(ji)械加(jia)(jia)(jia)(jia)工(gong)工(gong)序(xu)(xu)是(shi)指完成(cheng)一(yi)個(ge)(ge)工(gong)件(jian)，所需(xu)要的(de)步驟。這個(ge)(ge)步驟可(ke)以是(shi)由單獨(du)一(yi)個(ge)(ge)人完成(cheng)的(de)，也(ye)可(ke)以是(shi)有很(hen)多人共同完成(cheng)的(de)；工(gong)件(jian)可(ke)以是(shi)一(yi)個(ge)(ge)，也(ye)可(ke)以的(de)多個(ge)(ge)。
如何設計機械加工(gong)工(gong)序，這(zhe)是(shi)每(mei)個(ge)廠(chang)家必(bi)須(xu)面臨(lin)的(de)(de)問(wen)題(ti)。不同(tong)的(de)(de)生產設備(bei)，不同(tong)的(de)(de)生產規模(mo)，不同(tong)的(de)(de)生產條件，不同(tong)的(de)(de)人員(yuan)配備(bei)，所設計的(de)(de)工(gong)藝也不盡相同(tong)。但是(shi)原(yuan)理是(shi)相通的(de)(de)，
    一般(ban)，單(dan)件(jian)產品，可交由師(shi)傅，自己全權處理；大批量零(ling)件(jian)，必(bi)須由專人下料，開粗(cu)(cu)(cu)，粗(cu)(cu)(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)和(he)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)才可以(yi)快速有效(xiao)的(de)(de)生(sheng)產。為了保證加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du)，粗(cu)(cu)(cu)、精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)最(zui)好分開進行。因為粗(cu)(cu)(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)時(shi)，切削量大，工(gong)(gong)(gong)(gong)件(jian)所受(shou)切削力、夾緊力大，發熱量多，以(yi)及加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)表(biao)面有較(jiao)顯著的(de)(de)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)硬化現(xian)象，工(gong)(gong)(gong)(gong)件(jian)內部存在著較(jiao)大的(de)(de)內應(ying)(ying)力，如果粗(cu)(cu)(cu)、粗(cu)(cu)(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)連續進行，則精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)后(hou)的(de)(de)零(ling)件(jian)精(jing)度(du)會因為應(ying)(ying)力的(de)(de)重(zhong)新分布而很快喪失。對于(yu)某些加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)精(jing)度(du)要求高的(de)(de)零(ling)件(jian)。在粗(cu)(cu)(cu)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)之(zhi)后(hou)和(he)精(jing)加(jia)(jia)(jia)工(gong)(gong)(gong)(gong)之(zhi)前(qian)，還應(ying)(ying)安(an)排低(di)溫(wen)退火(huo)或時(shi)效(xiao)處理工(gong)(gong)(gong)(gong)序(xu)來(lai)消除內應(ying)(ying)力。