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精密模具配件沖頭如何進行材料選擇

   沖頭又叫沖針、頂針，是模具配件的一種，經常用于在五金沖壓模具以及塑膠(jiao)模具(ju)中，沖頭(tou)在(zai)工(gong)作的(de)(de)過(guo)程中，既要(yao)有硬(ying)度(du)，又必(bi)須要(yao)有韌性(xing)。影(ying)響沖針(zhen)使(shi)用次數(shu)的(de)(de)因素(su)(su)有很多，那么什么材(cai)(cai)質(zhi)(zhi)的(de)(de)沖頭(tou)不容(rong)(rong)易斷呢？這也是做精密模(mo)具配件的(de)(de)企業一直要(yao)致(zhi)力(li)解決的(de)(de)問題。盡管材(cai)(cai)質(zhi)(zhi)是其中比(bi)較(jiao)重(zhong)要(yao)的(de)(de)一種(zhong)，也并非決定(ding)性(xing)因素(su)(su)，沖針(zhen)不容(rong)(rong)易斷在(zai)材(cai)(cai)質(zhi)(zhi)方(fang)面(mian)主要(yao)看材(cai)(cai)質(zhi)(zhi)的(de)(de)韌性(xing)和硬(ying)度(du)，以(yi)硬(ying)度(du)來說，硬(ying)度(du)高(gao)，沖針(zhen)會比(bi)較(jiao)耐磨(mo)，但過(guo)高(gao)的(de)(de)硬(ying)度(du)會使(shi)得沖頭(tou)變脆，有易硬(ying)碰硬(ying)而崩掉(diao)的(de)(de)可能性(xing)，因此在(zai)加工(gong)生產沖頭(tou)過(guo)程中，我們會先對材(cai)(cai)料進行(xing)熱(re)處理，熱(re)處理可以(yi)讓(rang)材(cai)(cai)質(zhi)(zhi)達到(dao)相對合理的(de)(de)硬(ying)度(du)范(fan)圍內，從而保證沖針(zhen)的(de)(de)正常(chang)使(shi)用。

  沖(chong)頭(tou)在(zai)五(wu)金(jin)(jin)沖(chong)(chong)壓(ya)模(mo)具(ju)當中也叫、上(shang)(shang)模(mo)、陽模(mo)、等(deng),而沖(chong)(chong)頭(tou)又(you)分(fen)為(wei)A型(xing)沖(chong)(chong)頭(tou)、T型(xing)沖(chong)(chong)頭(tou)、異型(xing)沖(chong)(chong)頭(tou)。沖(chong)(chong)頭(tou)是安裝在(zai)上(shang)(shang)的(de)金(jin)(jin)屬零件(jian)，應用于與材料的(de)直接接觸，使材料發生形變、裁切材料。模(mo)具(ju)沖(chong)(chong)頭(tou)一般采用高速(su)鋼和等(deng)作為(wei)材質(zhi)，有高速(su)鋼沖(chong)(chong)頭(tou)和鎢(wu)鋼沖(chong)(chong)頭(tou)等(deng),而高速(su)鋼是最常(chang)(chang)用的(de)材質(zhi)，常(chang)(chang)用的(de)有、、asp23、skd11、skd51、等(deng)等(deng)，鎢(wu)鋼材質(zhi)一般用在(zai)要求較(jiao)高的(de)沖(chong)(chong)剪(jian)模(mo)具(ju)上(shang)(shang)。

  沖頭一般是用于塑膠模具中。它又可以叫做頂針推桿、鑲(xiang)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)、中針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)，托針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)等(deng)，有(you)(you)時候車床用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)尖(jian)也被叫做頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)。頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)在精密模(mo)具配(pei)(pei)(pei)件(jian)加工(gong)的(de)(de)(de)(de)(de)(de)應用(yong)(yong)(yong)(yong)有(you)(you)：在塑(su)(su)膠模(mo)具中，將產品從模(mo)具上(shang)分離下來(lai)，也是最常用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)；硬質合金頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)如鎢鋼頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)等(deng)，則可以用(yong)(yong)(yong)(yong)來(lai)通較長較細的(de)(de)(de)(de)(de)(de)孔；裝(zhuang)配(pei)(pei)(pei)在車床或者(zhe)磨床上(shang)的(de)(de)(de)(de)(de)(de)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)也叫頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)尖(jian)，是來(lai)支持(chi)工(gong)件(jian)并(bing)使工(gong)件(jian)圍繞它轉動的(de)(de)(de)(de)(de)(de)頭部圓(yuan)(yuan)錐形金屬棒，與(yu)模(mo)具配(pei)(pei)(pei)件(jian)加工(gong)中的(de)(de)(de)(de)(de)(de)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)是兩(liang)種(zhong)截然不同(tong)的(de)(de)(de)(de)(de)(de)物(wu)件(jian)。塑(su)(su)膠模(mo)具頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)也可以用(yong)(yong)(yong)(yong)于模(mo)具里面，它可以起(qi)到穩(wen)固(gu)作(zuo)用(yong)(yong)(yong)(yong)，也被叫做鑲(xiang)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)。塑(su)(su)膠模(mo)具頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)的(de)(de)(de)(de)(de)(de)種(zhong)類有(you)(you)：扁(bian)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)、圓(yuan)(yuan)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)、托針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)、標準(zhun)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)，非標準(zhun)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)等(deng)。扁(bian)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)也叫扁(bian)銷，主要用(yong)(yong)(yong)(yong)于塑(su)(su)料(liao)產品筋條部分的(de)(de)(de)(de)(de)(de)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)出，還有(you)(you)就是長條形的(de)(de)(de)(de)(de)(de)膠位，與(yu)圓(yuan)(yuan)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)無(wu)法(fa)擺下的(de)(de)(de)(de)(de)(de)時候，我們選擇用(yong)(yong)(yong)(yong)扁(bian)頂(ding)(ding)(ding)(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)。在精密模(mo)具配(pei)(pei)(pei)件(jian)加工(gong)中應用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)材料(liao)有(you)(you)SKH51 SKD61 SKD11 等(deng)。