沖壓模具的間隙分(fen)析你了解多少，下面為您(nin)介紹。

    沖壓模具的間隙，對沖壓件斷面質量有很(hen)重要(yao)的(de)(de)影(ying)響。此外(wai)，沖(chong)壓模具(ju)的(de)(de)間隙還影(ying)響著沖(chong)壓模具(ju)的(de)(de)壽命(ming)、卸料力、 推件力 、沖(chong)壓力和(he)沖(chong)裁件的(de)(de)尺(chi)寸精度。因此，沖(chong)裁模具(ju)的(de)(de)間隙是(shi)沖(chong)裁工藝與(yu)沖(chong)壓模具(ju)設計中的(de)(de)一個非常重要(yao)的(de)(de)工藝參數(shu).

    間隙對沖(chong)(chong)壓(ya)(ya)件(jian)(jian)(jian)尺(chi)寸(cun)(cun)精(jing)度(du)的(de)(de)(de)(de)影響?沖(chong)(chong)壓(ya)(ya)件(jian)(jian)(jian)的(de)(de)(de)(de)尺(chi)寸(cun)(cun)精(jing)度(du)是(shi)指沖(chong)(chong)裁件(jian)(jian)(jian)的(de)(de)(de)(de)實(shi)際尺(chi)寸(cun)(cun)與基本尺(chi)寸(cun)(cun)的(de)(de)(de)(de)差(cha)(cha)(cha)值(zhi)(zhi)，差(cha)(cha)(cha)值(zhi)(zhi)越(yue)小(xiao)，則(ze)精(jing)度(du)越(yue)高，這(zhe)個(ge)差(cha)(cha)(cha)值(zhi)(zhi)包括兩方(fang)面的(de)(de)(de)(de)偏(pian)差(cha)(cha)(cha)，一是(shi)沖(chong)(chong)壓(ya)(ya)件(jian)(jian)(jian)相對于凸模(mo)(mo)或 凹(ao)模(mo)(mo)尺(chi)寸(cun)(cun)的(de)(de)(de)(de)偏(pian)差(cha)(cha)(cha)，二(er)是(shi)沖(chong)(chong)裁模(mo)(mo)具(ju)(ju)(ju)本身的(de)(de)(de)(de)制造(zao)(zao)偏(pian)差(cha)(cha)(cha)。軟鋼(gang)的(de)(de)(de)(de)彈性變形量(liang)較(jiao)小(xiao)，沖(chong)(chong)壓(ya)(ya)后(hou)的(de)(de)(de)(de)彈性恢復也就(jiu)小(xiao)；硬鋼(gang)的(de)(de)(de)(de)彈性恢復量(liang)較(jiao)大。上述因素的(de)(de)(de)(de)影響是(shi)在一定的(de)(de)(de)(de)沖(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)(ju)(ju)制造(zao)(zao)精(jing)度(du)這(zhe)個(ge)前提(ti)下討(tao)論的(de)(de)(de)(de)。若沖(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)(ju)(ju)刃口制造(zao)(zao)精(jing)度(du)低(di)，則(ze)沖(chong)(chong)壓(ya)(ya)件(jian)(jian)(jian)的(de)(de)(de)(de) 制造(zao)(zao)精(jing)度(du)也就(jiu)無法保證(zheng)。

    沖(chong)(chong)(chong)壓件(jian)相(xiang)對于 凸(tu) 、凹(ao)模(mo)(mo)尺(chi)(chi)寸(cun)的(de)偏差，主要(yao)是制(zhi)件(jian)從凹(ao)模(mo)(mo)推出 (落料(liao)(liao)(liao)件(jian))或從 凸(tu)模(mo)(mo)上(shang) 卸下(沖(chong)(chong)(chong)孔件(jian) )時， 因材(cai)(cai)(cai)料(liao)(liao)(liao) 所受的(de)擠壓變形、纖維伸長、 穹彎(wan)等 產(chan)生彈(dan)性(xing)恢復而(er)造成(cheng)的(de)。偏差 值(zhi)可能 是正的(de)，也可能是負的(de)。影(ying)響這個偏差值(zhi)的(de)因素有：凸(tu) 、凹(ao)模(mo)(mo)間隙(xi)，材(cai)(cai)(cai)料(liao)(liao)(liao)性(xing)質，工件(jian)形狀(zhuang)與尺(chi)(chi)寸(cun)。其中主要(yao)因素是 凸(tu) 、凹(ao)模(mo)(mo)間隙(xi)值(zhi)。?當凸(tu) 凹(ao)模(mo)(mo)間隙(xi)較(jiao)大(da)時，材(cai)(cai)(cai)料(liao)(liao)(liao)所受拉伸作用(yong)增大(da)，沖(chong)(chong)(chong)裁(cai)結(jie)束后， 因材(cai)(cai)(cai)料(liao)(liao)(liao) 的(de)彈(dan)性(xing)恢復使沖(chong)(chong)(chong)裁(cai)件(jian)尺(chi)(chi)寸(cun)向實(shi)體方向收縮，落料(liao)(liao)(liao)件(jian)尺(chi)(chi)寸(cun)小于凹(ao)模(mo)(mo)尺(chi)(chi)寸(cun)，沖(chong)(chong)(chong)孔孔徑大(da)于凸(tu)模(mo)(mo)直徑.

    尺(chi)寸與(yu)沖(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)(ju)尺(chi)寸完全一樣。當間隙較(jiao)小時，由(you)于(yu)材(cai)(cai)料(liao)(liao)(liao)受凸 、凹模(mo)(mo)擠壓(ya)(ya)力(li)大(da)，故(gu)沖(chong)(chong)壓(ya)(ya)完后，材(cai)(cai)料(liao)(liao)(liao)的(de)(de)(de)彈性(xing)恢復(fu)使落料(liao)(liao)(liao)件尺(chi)寸增大(da)，沖(chong)(chong)孔孔徑變小。尺(chi)寸變化量(liang)的(de)(de)(de)大(da)小與(yu)材(cai)(cai)料(liao)(liao)(liao)性(xing)質、厚(hou)度(du)、軋制(zhi)方向等因(yin)素有(you)關。材(cai)(cai)料(liao)(liao)(liao)性(xing)質直(zhi)(zhi)接決定(ding)了材(cai)(cai)料(liao)(liao)(liao)在沖(chong)(chong)壓(ya)(ya)過程(cheng)中的(de)(de)(de)彈性(xing)變形(xing)量(liang)。所以， 凸 、凹模(mo)(mo)刃口的(de)(de)(de)制(zhi)造公差一定(ding)要按工件的(de)(de)(de)尺(chi)寸要求來決定(ding)。此(ci)外(wai)，沖(chong)(chong)裁模(mo)(mo)具(ju)(ju)的(de)(de)(de)結構形(xing)式(shi)及定(ding)位方式(shi)對(dui)孔的(de)(de)(de)定(ding)位尺(chi)寸精度(du)也(ye)有(you)較(jiao)大(da)的(de)(de)(de)影(ying)響，這將(jiang)在沖(chong)(chong)裁模(mo)(mo)具(ju)(ju)結構中闡述(shu)。對(dui)矩形(xing)輪廓，當長(chang)邊(bian)大(da)于(yu)或等于(yu)短邊(bian)的(de)(de)(de)1.5倍時，將(jiang)自動(dong)搜尋是(shi)否有(you)與(yu)矩形(xing)短邊(bian)一致的(de)(de)(de)方形(xing)沖(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)(ju)：對(dui)長(chang)圓(yuan)槽(cao)或圓(yuan)槽(cao)搜尋是(shi)否有(you)槽(cao)寬一致的(de)(de)(de)圓(yuan)形(xing)沖(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)(ju)，若有(you)則直(zhi)(zhi)接使用該沖(chong)(chong)模(mo)(mo)。

    按以下(xia)原則選(xuan)擇(ze)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)： 對(dui)(dui)可以歸入(ru)基本(ben)圖形(xing)(xing)(xing)的(de)(de)(de)輪廓，首先(xian)到沖(chong)(chong)(chong)模(mo)(mo)庫中搜尋是(shi)(shi)否(fou)有與輪廓完(wan)全一(yi)致、可以用(yong)一(yi)個沖(chong)(chong)(chong)壓(ya)(ya)動作沖(chong)(chong)(chong)出(chu)該(gai)輪廓的(de)(de)(de)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)。若有這(zhe)種(zhong)模(mo)(mo)具(ju)，將忽(hu)略在(zai)“選(xuan)擇(ze)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)下(xia)”設(she)定(ding)(ding)(ding)的(de)(de)(de)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)，直(zhi)(zhi)(zhi)(zhi)接使(shi)用(yong)搜尋到的(de)(de)(de)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)。經過以上兩(liang)步仍未確(que)定(ding)(ding)(ding)沖(chong)(chong)(chong)模(mo)(mo)時，則考慮(lv)用(yong)方形(xing)(xing)(xing)沖(chong)(chong)(chong)模(mo)(mo)或(huo)(huo)(huo)圓(yuan)形(xing)(xing)(xing)沖(chong)(chong)(chong)模(mo)(mo)步沖(chong)(chong)(chong)直(zhi)(zhi)(zhi)(zhi)線(xian)(xian)或(huo)(huo)(huo)圓(yuan)弧。③先(xian)考慮(lv)在(zai)“選(xuan)擇(ze)沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)下(xia)”設(she)定(ding)(ding)(ding)的(de)(de)(de)沖(chong)(chong)(chong)模(mo)(mo)，對(dui)(dui)設(she)定(ding)(ding)(ding)的(de)(de)(de)方形(xing)(xing)(xing)模(mo)(mo)具(ju)分析待(dai)沖(chong)(chong)(chong)壓(ya)(ya)的(de)(de)(de)直(zhi)(zhi)(zhi)(zhi)線(xian)(xian)是(shi)(shi)否(fou)大于(yu)或(huo)(huo)(huo)等(deng)于(yu)沖(chong)(chong)(chong)模(mo)(mo)邊(bian)長(chang)(chang)的(de)(de)(de)1.5倍，圓(yuan)形(xing)(xing)(xing)沖(chong)(chong)(chong)模(mo)(mo)沖(chong)(chong)(chong)壓(ya)(ya)曲(qu)線(xian)(xian)內(nei)側時分析待(dai)沖(chong)(chong)(chong)壓(ya)(ya)的(de)(de)(de)圓(yuan)弧直(zhi)(zhi)(zhi)(zhi)徑是(shi)(shi)否(fou)大于(yu)沖(chong)(chong)(chong)模(mo)(mo)直(zhi)(zhi)(zhi)(zhi)徑。若是(shi)(shi)則使(shi)用(yong)設(she)定(ding)(ding)(ding)的(de)(de)(de)沖(chong)(chong)(chong)模(mo)(mo)。 若設(she)定(ding)(ding)(ding)的(de)(de)(de)沖(chong)(chong)(chong)模(mo)(mo)不合適，系統將沖(chong)(chong)(chong)壓(ya)(ya)模(mo)(mo)具(ju)庫中從小到大搜尋方形(xing)(xing)(xing)或(huo)(huo)(huo)圓(yuan)形(xing)(xing)(xing)沖(chong)(chong)(chong)模(mo)(mo)，使(shi)用(yong)滿足待(dai)沖(chong)(chong)(chong)壓(ya)(ya)的(de)(de)(de)直(zhi)(zhi)(zhi)(zhi)線(xian)(xian)大于(yu)或(huo)(huo)(huo)等(deng)于(yu)沖(chong)(chong)(chong)模(mo)(mo)邊(bian)長(chang)(chang)的(de)(de)(de)1.5倍。