機械加工(gong)(gong)(gong)(gong)是指通過(guo)(guo)(guo)一種機械設備(bei)對工(gong)(gong)(gong)(gong)件(jian)的(de)(de)外形(xing)尺寸(cun)或性能進行(xing)改變的(de)(de)過(guo)(guo)(guo)程(cheng)，按(an)加工(gong)(gong)(gong)(gong)方式上的(de)(de)差別可分(fen)為切(qie)削(xue)加工(gong)(gong)(gong)(gong)和壓力加工(gong)(gong)(gong)(gong)；機器的(de)(de)生(sheng)產(chan)(chan)過(guo)(guo)(guo)程(cheng)是指從原(yuan)(yuan)材料(liao)或半成品(pin)制成產(chan)(chan)品(pin)的(de)(de)全部過(guo)(guo)(guo)程(cheng)，對機器生(sheng)產(chan)(chan)而言包括原(yuan)(yuan)材料(liao)的(de)(de)運輸和保存，生(sheng)產(chan)(chan)的(de)(de)準備(bei)，毛坯(pi)的(de)(de)制造(zao)，零件(jian)的(de)(de)加工(gong)(gong)(gong)(gong)和熱處理(li)，產(chan)(chan)品(pin)的(de)(de)裝配、及調試，油漆和包裝等內(nei)容；生(sheng)產(chan)(chan)過(guo)(guo)(guo)程(cheng)的(de)(de)內(nei)容十分(fen)廣泛，現代企業用系統工(gong)(gong)(gong)(gong)程(cheng)學的(de)(de)原(yuan)(yuan)理(li)和方法組織生(sheng)產(chan)(chan)和指導(dao)生(sheng)產(chan)(chan)，將生(sheng)產(chan)(chan)過(guo)(guo)(guo)程(cheng)看成是一個具有輸入和輸出的(de)(de)生(sheng)產(chan)(chan)系統。