模(mo)(mo)(mo)具(ju)(ju)是(shi)工(gong)(gong)(gong)業生(sheng)(sheng)產上用(yong)(yong)(yong)以注塑(su)(su)、吹塑(su)(su)、擠出(chu)(chu)、壓(ya)鑄或(huo)鍛壓(ya)成(cheng)型、冶煉、沖(chong)壓(ya)等方法(fa)得到所需產品的(de)各種(zhong)模(mo)(mo)(mo)子和(he)(he)(he)工(gong)(gong)(gong)具(ju)(ju)。簡(jian)而言之，模(mo)(mo)(mo)具(ju)(ju)是(shi)用(yong)(yong)(yong)來制(zhi)作成(cheng)型物品的(de)工(gong)(gong)(gong)具(ju)(ju)，這(zhe)種(zhong)工(gong)(gong)(gong)具(ju)(ju)由各種(zhong)零件構成(cheng)，不同(tong)的(de)模(mo)(mo)(mo)具(ju)(ju)由不同(tong)的(de)零件構成(cheng)。它主要(yao)通過所成(cheng)型材料物理狀(zhuang)態的(de)改變來實現物品外形(xing)的(de)加(jia)(jia)工(gong)(gong)(gong)。素有(you)“工(gong)(gong)(gong)業之母”的(de)稱號。在外力作用(yong)(yong)(yong)下使坯料成(cheng)為有(you)特(te)定形(xing)狀(zhuang)和(he)(he)(he)尺寸的(de)制(zhi)件的(de)工(gong)(gong)(gong)具(ju)(ju)。廣泛用(yong)(yong)(yong)于沖(chong)裁、模(mo)(mo)(mo)鍛、冷鐓(dui)、擠壓(ya)、粉末冶金件壓(ya)制(zhi)、壓(ya)力鑄造，以及工(gong)(gong)(gong)程(cheng)塑(su)(su)料、橡膠(jiao)、陶瓷(ci)等制(zhi)品的(de)壓(ya)塑(su)(su)或(huo)注塑(su)(su)的(de)成(cheng)形(xing)加(jia)(jia)工(gong)(gong)(gong)中。模(mo)(mo)(mo)具(ju)(ju)具(ju)(ju)有(you)特(te)定的(de)輪廓或(huo)內腔形(xing)狀(zhuang)，應用(yong)(yong)(yong)具(ju)(ju)有(you)刃口的(de)輪廓形(xing)狀(zhuang)可(ke)以使坯料按(an)輪廓線形(xing)狀(zhuang)發生(sheng)(sheng)分(fen)離（沖(chong)裁）。應用(yong)(yong)(yong)內腔形(xing)狀(zhuang)可(ke)使坯料獲得相(xiang)應的(de)立體形(xing)狀(zhuang)。模(mo)(mo)(mo)具(ju)(ju)一般包括動模(mo)(mo)(mo)和(he)(he)(he)定模(mo)(mo)(mo)（或(huo)凸模(mo)(mo)(mo)和(he)(he)(he)凹模(mo)(mo)(mo)）兩個部分(fen)，二(er)者可(ke)分(fen)可(ke)合。分(fen)開時取出(chu)(chu)制(zhi)件，合攏時使坯料注入模(mo)(mo)(mo)具(ju)(ju)型腔成(cheng)形(xing)。模(mo)(mo)(mo)具(ju)(ju)是(shi)工(gong)(gong)(gong)具(ju)(ju)，形(xing)狀(zhuang)復雜，承受坯料的(de)脹(zhang)力，對(dui)結構強(qiang)度(du)、剛(gang)度(du)、表(biao)(biao)面硬度(du)、表(biao)(biao)面粗糙度(du)和(he)(he)(he)加(jia)(jia)工(gong)(gong)(gong)精度(du)都有(you)較(jiao)高要(yao)求，模(mo)(mo)(mo)具(ju)(ju)生(sheng)(sheng)產的(de)發展水平(ping)是(shi)機械制(zhi)造水平(ping)的(de)重要(yao)標志(zhi)之一。

摩托車塑件模具