草莓视频污下载app

精密模具零件加工的磨削加工工藝

      精密模具零件加工的磨削加工工藝

      模(mo)(mo)(mo)(mo)(mo)具配(pei)件(jian)(jian)是(shi)指裝配(pei)模(mo)(mo)(mo)(mo)(mo)具的(de)零(ling)件(jian)(jian)或(huo)部件(jian)(jian)；也可以指損壞(huai)后重新安裝上(shang)的(de)模(mo)(mo)(mo)(mo)(mo)具零(ling)件(jian)(jian)或(huo)部件(jian)(jian)。精(jing)(jing)密(mi)模(mo)(mo)(mo)(mo)(mo)具一般是(shi)由許(xu)多零(ling)件(jian)(jian)構(gou)成(cheng)(cheng)(cheng)，可以分為兩類：工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)零(ling)件(jian)(jian)和結構(gou)零(ling)件(jian)(jian)。工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)零(ling)件(jian)(jian)直接(jie)對(dui)成(cheng)(cheng)(cheng)型產品質(zhi)(zhi)量造成(cheng)(cheng)(cheng)影響，工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)零(ling)件(jian)(jian)的(de)決勝品質(zhi)(zhi)在(zai)當下的(de)精(jing)(jing)密(mi)模(mo)(mo)(mo)(mo)(mo)具配(pei)件(jian)(jian)均用精(jing)(jing)加工(gong)(gong)(gong)(gong)(gong)手段來完(wan)成(cheng)(cheng)(cheng)。精(jing)(jing)密(mi)加工(gong)(gong)(gong)(gong)(gong)過程關系到精(jing)(jing)密(mi)模(mo)(mo)(mo)(mo)(mo)具的(de)壽命和成(cheng)(cheng)(cheng)型產品，在(zai)精(jing)(jing)密(mi)模(mo)(mo)(mo)(mo)(mo)具配(pei)件(jian)(jian)加工(gong)(gong)(gong)(gong)(gong)中(zhong)的(de)精(jing)(jing)加工(gong)(gong)(gong)(gong)(gong)階段除采用慢走絲(si)線切割、電火花成(cheng)(cheng)(cheng)型等工(gong)(gong)(gong)(gong)(gong)藝(yi)(yi)手段外(wai)，另采用的(de)方(fang)法即是(shi)在(zai)半精(jing)(jing)加工(gong)(gong)(gong)(gong)(gong)后，熱處理基(ji)礎上(shang)磨削加工(gong)(gong)(gong)(gong)(gong)。

       那么在(zai)精(jing)(jing)密(mi)模(mo)具(ju)配(pei)件(jian)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)(de)磨削加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)階段需要控(kong)(kong)制好零(ling)件(jian)的(de)(de)(de)(de)變形(xing)、內應力、形(xing)狀公差及尺寸精(jing)(jing)度等許多(duo)技(ji)術參數。在(zai)具(ju)體的(de)(de)(de)(de)生產實(shi)踐中，操作困難較多(duo)，但是在(zai)東莞市時利和15年的(de)(de)(de)(de)精(jing)(jing)密(mi)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)經(jing)驗中可以(yi)(yi)總(zong)結分析的(de)(de)(de)(de)出可以(yi)(yi)借鑒(jian)的(de)(de)(de)(de)方(fang)法：一、從模(mo)具(ju)的(de)(de)(de)(de)精(jing)(jing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)過程(cheng)控(kong)(kong)制精(jing)(jing)密(mi)模(mo)具(ju)配(pei)件(jian)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)，我們可以(yi)(yi)針對不(bu)同的(de)(de)(de)(de)模(mo)具(ju)零(ling)件(jian)、不(bu)同的(de)(de)(de)(de)材質、不(bu)同的(de)(de)(de)(de)形(xing)狀和不(bu)同的(de)(de)(de)(de)技(ji)術要求進(jin)行適應性(xing)(xing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)，提供選(xuan)擇(ze)性(xing)(xing)方(fang)案。通過對加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)過程(cheng)的(de)(de)(de)(de)控(kong)(kong)制，達到更好的(de)(de)(de)(de)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)效果(guo)和經(jing)濟性(xing)(xing)是大多(duo)數精(jing)(jing)密(mi)模(mo)具(ju)配(pei)件(jian)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)企業關注的(de)(de)(de)(de)重點。精(jing)(jing)密(mi)模(mo)具(ju)配(pei)件(jian)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)(de)工(gong)(gong)(gong)(gong)藝(yi)過程(cheng)一般為：粗加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)—半精(jing)(jing)加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)—（淬火、調(diao)質）—精(jing)(jing)密(mi)磨削—電加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)—鉗工(gong)(gong)(gong)(gong)修整(zheng)—組裝加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)(gong)。

       在精密(mi)模具配件(jian)加工的(de)磨(mo)(mo)削(xue)(xue)加工階段主要(yao)采用的(de)機床(chuang)有(you)三種(zhong)主要(yao)類型(xing)：平面磨(mo)(mo)床(chuang)、內(nei)外圓(yuan)磨(mo)(mo)床(chuang)及工具成型(xing)磨(mo)(mo)削(xue)(xue)機床(chuang)。精加工磨(mo)(mo)削(xue)(xue)時要(yao)嚴格控(kong)制(zhi)磨(mo)(mo)削(xue)(xue)變(bian)形(xing)和磨(mo)(mo)削(xue)(xue)裂(lie)紋的(de)出(chu)現，哪怕(pa)是工件(jian)表面的(de)顯微裂(lie)紋，否則在后續(xu)的(de)工作中(zhong)也會漸漸顯露出(chu)來。因此(ci)，精密(mi)磨(mo)(mo)削(xue)(xue)時的(de)進刀量(liang)要(yao)小，磨(mo)(mo)削(xue)(xue)中(zhong)冷卻要(yao)充分，盡量(liang)選擇冷卻液介質，加工余量(liang)在0.01mm內(nei)的(de)零件(jian)要(yao)盡量(liang)恒溫磨(mo)(mo)削(xue)(xue)。

       磨(mo)(mo)(mo)削(xue)(xue)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)中(zhong)要(yao)(yao)及時(shi)修整砂(sha)(sha)輪，保持砂(sha)(sha)輪的(de)銳利，當砂(sha)(sha)輪鈍化后(hou)會在(zai)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)面滑擦、刻劃、擠壓，造(zao)成(cheng)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)面燒傷、顯微裂(lie)痕或產(chan)生溝槽，對以后(hou)的(de)使用(yong)顯著地(di)降低效用(yong)。盤類(lei)、板類(lei)零件(jian)(jian)的(de)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)大部分(fen)采用(yong)平(ping)(ping)面磨(mo)(mo)(mo)床加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)，加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)長(chang)而(er)薄的(de)薄板件(jian)(jian)時(shi)，有一定的(de)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)難度(du)(du)。加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)前在(zai)磨(mo)(mo)(mo)床磁力臺(tai)的(de)強力吸(xi)引下，工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)原先(xian)存在(zai)某種彎(wan)曲(qu)產(chan)生平(ping)(ping)直(zhi)形變(bian)，貼近于(yu)(yu)工(gong)(gong)(gong)(gong)(gong)(gong)作臺(tai)表(biao)面，待磨(mo)(mo)(mo)削(xue)(xue)后(hou)，工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)又(you)在(zai)原應力作用(yong)下變(bian)形回(hui)復，測量板件(jian)(jian)厚度(du)(du)時(shi)顯示一致，但由于(yu)(yu)變(bian)形回(hui)復，平(ping)(ping)面度(du)(du)達(da)不(bu)到(dao)精密模具配件(jian)(jian)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)應該的(de)要(yao)(yao)求，解決的(de)方(fang)(fang)法是(shi)磨(mo)(mo)(mo)削(xue)(xue)前以等高墊鐵(tie)墊在(zai)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)下面，四(si)周(zhou)用(yong)擋塊擋住工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)防(fang)止走動，磨(mo)(mo)(mo)削(xue)(xue)時(shi)磨(mo)(mo)(mo)頭進刀(dao)量要(yao)(yao)小(xiao)，用(yong)多(duo)次走刀(dao)方(fang)(fang)式完(wan)成(cheng)基準平(ping)(ping)面，基準平(ping)(ping)面加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)好(hao)一面后(hou)，可(ke)用(yong)這一基準平(ping)(ping)面吸(xi)附在(zai)磁力臺(tai)上，通過如上所述的(de)磨(mo)(mo)(mo)削(xue)(xue)方(fang)(fang)法可(ke)改善大部分(fen)工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)(jian)平(ping)(ping)面度(du)(du)。