91香蕉视频下载

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)模具中，沖(chong)頭(tou)(tou)(tou)在工(gong)作的(de)(de)過(guo)程(cheng)中(zhong)，既要(yao)(yao)有(you)硬度(du)(du)(du)，又必須要(yao)(yao)有(you)韌性(xing)(xing)(xing)。影響(xiang)沖(chong)針(zhen)使用次(ci)數的(de)(de)因素有(you)很多，那么什么材質(zhi)的(de)(de)沖(chong)頭(tou)(tou)(tou)不容易(yi)斷呢？這也是做精密(mi)模具(ju)配件的(de)(de)企業(ye)一(yi)直(zhi)要(yao)(yao)致力解決的(de)(de)問(wen)題(ti)。盡(jin)管材質(zhi)是其(qi)中(zhong)比較重要(yao)(yao)的(de)(de)一(yi)種，也并非決定性(xing)(xing)(xing)因素，沖(chong)針(zhen)不容易(yi)斷在材質(zhi)方面(mian)主要(yao)(yao)看材質(zhi)的(de)(de)韌性(xing)(xing)(xing)和硬度(du)(du)(du)，以硬度(du)(du)(du)來說(shuo)，硬度(du)(du)(du)高，沖(chong)針(zhen)會比較耐磨，但過(guo)高的(de)(de)硬度(du)(du)(du)會使得沖(chong)頭(tou)(tou)(tou)變脆，有(you)易(yi)硬碰硬而崩掉的(de)(de)可能性(xing)(xing)(xing)，因此在加工(gong)生產(chan)沖(chong)頭(tou)(tou)(tou)過(guo)程(cheng)中(zhong)，我們會先對(dui)材料進(jin)行(xing)熱處理，熱處理可以讓(rang)材質(zhi)達到(dao)相對(dui)合(he)理的(de)(de)硬度(du)(du)(du)范圍內，從而保證沖(chong)針(zhen)的(de)(de)正常使用。

  沖頭(tou)在五金沖(chong)(chong)(chong)(chong)(chong)壓(ya)模(mo)(mo)(mo)具當中也叫、上(shang)模(mo)(mo)(mo)、陽模(mo)(mo)(mo)、等(deng)(deng),而沖(chong)(chong)(chong)(chong)(chong)頭(tou)又分為A型沖(chong)(chong)(chong)(chong)(chong)頭(tou)、T型沖(chong)(chong)(chong)(chong)(chong)頭(tou)、異型沖(chong)(chong)(chong)(chong)(chong)頭(tou)。沖(chong)(chong)(chong)(chong)(chong)頭(tou)是(shi)安裝在上(shang)的金屬零件，應(ying)用(yong)于與材(cai)(cai)料(liao)的直接接觸，使材(cai)(cai)料(liao)發生形變(bian)、裁切材(cai)(cai)料(liao)。模(mo)(mo)(mo)具沖(chong)(chong)(chong)(chong)(chong)頭(tou)一般(ban)采用(yong)高速鋼和等(deng)(deng)作(zuo)為材(cai)(cai)質，有(you)高速鋼沖(chong)(chong)(chong)(chong)(chong)頭(tou)和鎢鋼沖(chong)(chong)(chong)(chong)(chong)頭(tou)等(deng)(deng),而高速鋼是(shi)最常用(yong)的材(cai)(cai)質，常用(yong)的有(you)、、asp23、skd11、skd51、等(deng)(deng)等(deng)(deng)，鎢鋼材(cai)(cai)質一般(ban)用(yong)在要求較高的沖(chong)(chong)(chong)(chong)(chong)剪模(mo)(mo)(mo)具上(shang)。

  沖頭一般是用于塑膠模具中。它又可以叫做頂針推桿、鑲針(zhen)(zhen)(zhen)(zhen)、中針(zhen)(zhen)(zhen)(zhen)，托針(zhen)(zhen)(zhen)(zhen)等(deng)，有(you)時候車床(chuang)用(yong)(yong)的(de)(de)頂(ding)(ding)(ding)(ding)尖(jian)也(ye)被叫(jiao)做頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)。頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)在(zai)精(jing)密(mi)模(mo)(mo)(mo)(mo)具(ju)(ju)配件(jian)加工(gong)(gong)的(de)(de)應(ying)用(yong)(yong)有(you)：在(zai)塑膠(jiao)模(mo)(mo)(mo)(mo)具(ju)(ju)中，將產品從模(mo)(mo)(mo)(mo)具(ju)(ju)上分(fen)離下(xia)來，也(ye)是最常用(yong)(yong)的(de)(de)；硬質合(he)金(jin)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)如(ru)鎢(wu)鋼頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)等(deng)，則(ze)可以(yi)用(yong)(yong)來通較長較細的(de)(de)孔；裝配在(zai)車床(chuang)或者磨(mo)床(chuang)上的(de)(de)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)也(ye)叫(jiao)頂(ding)(ding)(ding)(ding)尖(jian)，是來支持工(gong)(gong)件(jian)并(bing)使工(gong)(gong)件(jian)圍繞它(ta)轉動的(de)(de)頭部圓錐(zhui)形(xing)金(jin)屬(shu)棒(bang)，與模(mo)(mo)(mo)(mo)具(ju)(ju)配件(jian)加工(gong)(gong)中的(de)(de)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)是兩種截然不同(tong)的(de)(de)物件(jian)。塑膠(jiao)模(mo)(mo)(mo)(mo)具(ju)(ju)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)也(ye)可以(yi)用(yong)(yong)于模(mo)(mo)(mo)(mo)具(ju)(ju)里(li)面，它(ta)可以(yi)起到穩(wen)固作用(yong)(yong)，也(ye)被叫(jiao)做鑲針(zhen)(zhen)(zhen)(zhen)。塑膠(jiao)模(mo)(mo)(mo)(mo)具(ju)(ju)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)的(de)(de)種類有(you)：扁頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)、圓頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)、托針(zhen)(zhen)(zhen)(zhen)、標(biao)準(zhun)(zhun)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)，非標(biao)準(zhun)(zhun)頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)等(deng)。扁頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)也(ye)叫(jiao)扁銷，主要(yao)用(yong)(yong)于塑料產品筋條部分(fen)的(de)(de)頂(ding)(ding)(ding)(ding)出(chu)，還有(you)就是長條形(xing)的(de)(de)膠(jiao)位，與圓頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)無法擺(bai)下(xia)的(de)(de)時候，我們(men)選擇用(yong)(yong)扁頂(ding)(ding)(ding)(ding)針(zhen)(zhen)(zhen)(zhen)。在(zai)精(jing)密(mi)模(mo)(mo)(mo)(mo)具(ju)(ju)配件(jian)加工(gong)(gong)中應(ying)用(yong)(yong)的(de)(de)材料有(you)SKH51 SKD61 SKD11 等(deng)。