精(jing)密(mi)(mi)五(wu)金(jin)配件加(jia)工(gong)(gong)講(jiang)究的(de)(de)是精(jing)密(mi)(mi)度需要達到標準。在(zai)五(wu)金(jin)配件加(jia)工(gong)(gong)成(cheng)形后(hou)，還(huan)有一(yi)系(xi)列的(de)(de)后(hou)續加(jia)工(gong)(gong)工(gong)(gong)序是需要注意的(de)(de)。今天(tian)我們來說一(yi)下關于精(jing)密(mi)(mi)五(wu)金(jin)配件加(jia)工(gong)(gong)成(cheng)形后(hou)的(de)(de)翻邊工(gong)(gong)序。

翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)是將工(gong)(gong)件(jian)的(de)(de)孔邊(bian)(bian)(bian)(bian)緣(yuan)或外邊(bian)(bian)(bian)(bian)緣(yuan)在(zai)模具作用(yong)下(xia)翻(fan)(fan)(fan)成(cheng)豎立直邊(bian)(bian)(bian)(bian)的(de)(de)加工(gong)(gong)工(gong)(gong)序。根(gen)據精密五金配件(jian)加工(gong)(gong)工(gong)(gong)件(jian)的(de)(de)邊(bian)(bian)(bian)(bian)緣(yuan)的(de)(de)性質和應力狀(zhuang)態的(de)(de)不(bu)同，翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)可分為內孔翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)和外緣(yuan)翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)；按豎邊(bian)(bian)(bian)(bian)壁厚(hou)的(de)(de)變(bian)化情(qing)況，翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)可分為不(bu)變(bian)薄翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)（統稱為翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)）和變(bian)薄翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)。采用(yong)翻(fan)(fan)(fan)邊(bian)(bian)(bian)(bian)的(de)(de)工(gong)(gong)藝方法可以加工(gong)(gong)形狀(zhuang)較為復(fu)雜而(er)且具有良好剛度和合理空間(jian)形狀(zhuang)的(de)(de)立體零件(jian)，因此(ci)在(zai)生產中應用(yong)很廣。

翻邊的加(jia)工方法

內孔翻邊：

一般來講，內孔(kong)翻(fan)(fan)邊(bian)必須采(cai)用翻(fan)(fan)邊(bian)模通(tong)(tong)過壓力機的壓力才能完成。生(sheng)產中只有在單件少量且翻(fan)(fan)邊(bian)孔(kong)尺寸較(jiao)小(xiao)、形狀較(jiao)為(wei)簡(jian)單的情況下，才考慮采(cai)用簡(jian)單的翻(fan)(fan)邊(bian)模通(tong)(tong)過手工操作后完成。

外緣翻邊：

與內(nei)孔翻邊(bian)類似(si)，外緣翻邊(bian)也必須采用(yong)翻邊(bian)模通(tong)過(guo)壓力機的(de)(de)壓力才能完成(cheng)。只有在(zai)單件少(shao)量且翻邊(bian)孔尺寸(cun)較小、形狀較簡單的(de)(de)情況下(xia)，生產中才考慮采用(yong)簡單的(de)(de)翻邊(bian)模通(tong)過(guo)手工(gong)操作(zuo)完成(cheng)。

變薄翻邊：

變(bian)薄(bo)單邊(bian)一般是采用變(bian)薄(bo)翻邊(bian)模通過(guo)壓力(li)機的壓力(li)作用完成。當零件翻邊(bian)高(gao)度很(hen)高(gao)時(shi)，可以(yi)采用減(jian)小模具突、凹模間隙，強(qiang)迫材料(liao)變(bian)薄(bo)的方(fang)法進行(xing)，以(yi)便提高(gao)生產(chan)效率和節(jie)約(yue)原材料(liao)。

變(bian)薄翻邊時，在(zai)凸模壓力(li)作用(yong)下(xia)，變(bian)形(xing)區材(cai)料(liao)先受(shou)到拉深變(bian)形(xing)使孔徑(jing)逐(zhu)步擴大(da)，而后材(cai)料(liao)又在(zai)小于厚(hou)度(du)的凸、凹間隙中收(shou)到擠壓變(bian)形(xing)，是材(cai)料(liao)厚(hou)度(du)顯著變(bian)薄。