模(mo)(mo)(mo)具(ju)(ju)是工(gong)(gong)(gong)(gong)業生產(chan)上用(yong)以注塑、吹塑、擠(ji)出、壓(ya)鑄(zhu)或(huo)鍛壓(ya)成(cheng)型、冶(ye)煉、沖壓(ya)等方法得到(dao)所需產(chan)品(pin)的(de)(de)(de)(de)各種模(mo)(mo)(mo)子和工(gong)(gong)(gong)(gong)具(ju)(ju)。簡而言之，模(mo)(mo)(mo)具(ju)(ju)是用(yong)來(lai)制(zhi)作(zuo)成(cheng)型物(wu)品(pin)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)具(ju)(ju)，這(zhe)種工(gong)(gong)(gong)(gong)具(ju)(ju)由(you)各種零件(jian)構(gou)成(cheng)，不(bu)同的(de)(de)(de)(de)模(mo)(mo)(mo)具(ju)(ju)由(you)不(bu)同的(de)(de)(de)(de)零件(jian)構(gou)成(cheng)。它主要(yao)通過所成(cheng)型材(cai)料(liao)(liao)物(wu)理狀(zhuang)(zhuang)(zhuang)態的(de)(de)(de)(de)改變(bian)來(lai)實現物(wu)品(pin)外形(xing)(xing)(xing)的(de)(de)(de)(de)加工(gong)(gong)(gong)(gong)。素有(you)(you)“工(gong)(gong)(gong)(gong)業之母(mu)”的(de)(de)(de)(de)稱號。在(zai)外力作(zuo)用(yong)下使(shi)坯(pi)(pi)料(liao)(liao)成(cheng)為有(you)(you)特定形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)和尺寸的(de)(de)(de)(de)制(zhi)件(jian)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)具(ju)(ju)。廣(guang)泛用(yong)于(yu)沖裁、模(mo)(mo)(mo)鍛、冷鐓、擠(ji)壓(ya)、粉末(mo)冶(ye)金件(jian)壓(ya)制(zhi)、壓(ya)力鑄(zhu)造(zao)，以及工(gong)(gong)(gong)(gong)程塑料(liao)(liao)、橡膠、陶(tao)瓷等制(zhi)品(pin)的(de)(de)(de)(de)壓(ya)塑或(huo)注塑的(de)(de)(de)(de)成(cheng)形(xing)(xing)(xing)加工(gong)(gong)(gong)(gong)中。模(mo)(mo)(mo)具(ju)(ju)具(ju)(ju)有(you)(you)特定的(de)(de)(de)(de)輪(lun)廓(kuo)(kuo)或(huo)內腔(qiang)形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)，應用(yong)具(ju)(ju)有(you)(you)刃口的(de)(de)(de)(de)輪(lun)廓(kuo)(kuo)形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)可(ke)以使(shi)坯(pi)(pi)料(liao)(liao)按輪(lun)廓(kuo)(kuo)線(xian)形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)發生分離（沖裁）。應用(yong)內腔(qiang)形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)可(ke)使(shi)坯(pi)(pi)料(liao)(liao)獲得相應的(de)(de)(de)(de)立體形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)。模(mo)(mo)(mo)具(ju)(ju)一般包括動模(mo)(mo)(mo)和定模(mo)(mo)(mo)（或(huo)凸(tu)模(mo)(mo)(mo)和凹模(mo)(mo)(mo)）兩個部分，二者可(ke)分可(ke)合。分開時(shi)取出制(zhi)件(jian)，合攏(long)時(shi)使(shi)坯(pi)(pi)料(liao)(liao)注入模(mo)(mo)(mo)具(ju)(ju)型腔(qiang)成(cheng)形(xing)(xing)(xing)。模(mo)(mo)(mo)具(ju)(ju)是工(gong)(gong)(gong)(gong)具(ju)(ju)，形(xing)(xing)(xing)狀(zhuang)(zhuang)(zhuang)復(fu)雜，承(cheng)受(shou)坯(pi)(pi)料(liao)(liao)的(de)(de)(de)(de)脹力，對結(jie)構(gou)強度(du)(du)、剛(gang)度(du)(du)、表面硬度(du)(du)、表面粗糙度(du)(du)和加工(gong)(gong)(gong)(gong)精度(du)(du)都有(you)(you)較(jiao)高(gao)要(yao)求(qiu)，模(mo)(mo)(mo)具(ju)(ju)生產(chan)的(de)(de)(de)(de)發展水平(ping)(ping)是機械制(zhi)造(zao)水平(ping)(ping)的(de)(de)(de)(de)重要(yao)標志之一。

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