大連沖壓件是借助(zhu)于(yu)常規或專用沖(chong)(chong)壓(ya)設(she)備(bei)的(de)動力(li),使板(ban)料(liao)在(zai)模(mo)具里直接(jie)受到變形力(li)并進行(xing)變形,從而獲得一(yi)定形狀,尺寸和性能的(de)產(chan)品零(ling)件的(de)生產(chan)技術。板(ban)料(liao),模(mo)具和設(she)備(bei)是沖(chong)(chong)壓(ya)加工(gong)的(de)三要素(su)。沖(chong)(chong)壓(ya)加工(gong)是一(yi)種金屬(shu)(shu)冷(leng)變形加工(gong)方(fang)法。所以(yi),被稱(cheng)之為冷(leng)沖(chong)(chong)壓(ya)或板(ban)料(liao)沖(chong)(chong)壓(ya),簡稱(cheng)沖(chong)(chong)壓(ya)。它(ta)是金屬(shu)(shu)塑(su)性加工(gong)(或壓(ya)力(li)加工(gong))的(de)主(zhu)要方(fang)法之一(yi),也隸屬(shu)(shu)于(yu)材(cai)料(liao)成型工(gong)程技術。
冷沖壓件一(yi)般不再經切削加工,或僅需要少量(liang)的切削加工。熱沖壓(ya)(ya)件(jian)(jian)(jian)(jian)精度和表面狀(zhuang)態(tai)低(di)于冷沖壓(ya)(ya)件(jian)(jian)(jian)(jian),但仍優(you)于鑄(zhu)件(jian)(jian)(jian)(jian)、鍛件(jian)(jian)(jian)(jian),切削加工量(liang)少。