地址(zhi): 浙江省溫嶺(ling)市(shi)南泉二期工業(ye)區(qu)
電話: 0576-86219645(內貿)
13905862652(內貿)
0576-86048699(外貿)
13867673066(外貿)
傳真: 0576-86219748
QQ:1356379984
Email: sale@gfmould.com(內貿)
techical@gfmould.com(技術)
sales@gfmould.com(外貿)
finance@gfmould.com(財務)
網址:wap.winwin88.com.cn
塑料注射(she)模具(ju)型(xing)(xing)腔(qiang)加工注意事(shi)項是(shi)什么?型(xing)(xing)芯(xin)加工主要事(shi)項是(shi)什么?
型腔加工注意事項如(ru)下(xia)。
① 在(zai)型腔(qiang)零(ling)件(jian)數控銑(xian)削加(jia)工(gong)(gong)(gong)中,從(cong)規則形狀(zhuang)毛坯到光(guang)整處理(主要指拋光(guang))前的零(ling)件(jian)加(jia)工(gong)(gong)(gong),由于型腔(qiang)制造時(shi)一般都有與之配套的銅(tong)電極,其銑(xian)削加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝一般以粗加(jia)工(gong)(gong)(gong)刀路為主,輔以局部曲面精加(jia)工(gong)(gong)(gong)。
② 帶(dai)有分(fen)型面(mian)和(he)枕位(wei)(wei)面(mian),要一起加工時,分(fen)型面(mian)、枕位(wei)(wei)面(mian)加工到位(wei)(wei),不留(liu)(liu)余(yu)量。型腔部(bu)位(wei)(wei)留(liu)(liu)余(yu)量0.2~0.5mm,以便打火花。可留(liu)(liu)余(yu)量0.5mm。型腔碰穿位(wei)(wei)、擦穿位(wei)(wei)可留(liu)(liu)余(yu)量0.1mm,用(yong)于動定模配模。
③ 粗加工時(shi)用大直(zhi)徑(jing)(jing)的(de)圓角刀(dao)(刀(dao)把),刀(dao)具直(zhi)徑(jing)(jing)過小時(shi)容(rong)易斷(duan)刀(dao)和彈(dan)刀(dao)。圓角刀(dao)直(zhi)徑(jing)(jing)大、剛性(xing)好、耐用、型腔粗加工時(shi)通常用其粗加工,精加工時(shi)也盡量采用。
刀具(ju)剛性(xing)不夠時(shi)會(hui)出現彎(wan)曲和震動,導致無(wu)法(fa)正常加工(gong),稱(cheng)為彈(dan)刀。
④ 采用系(xi)統(tong)缺省(sheng)參(can)數的(de)情況下,曲(qu)面加工(gong)中的(de)刀(dao)(dao)(dao)路范圍(wei)(wei)以刀(dao)(dao)(dao)具(ju)中心軸(zhou)的(de)移(yi)動軌跡(ji)進行計算,即實際(ji)加工(gong)區(qu)域比所選(xuan)刀(dao)(dao)(dao)路范圍(wei)(wei)限(xian)定(ding)框(邊界限(xian)定(ding)框)單邊大(da)一個刀(dao)(dao)(dao)具(ju)半徑值。合理設置刀(dao)(dao)(dao)路范圍(wei)(wei)限(xian)定(ding)框參(can)數,避(bi)免加工(gong)范圍(wei)(wei)超出實際(ji)加工(gong)需要。
型(xing)芯加工注意事項(xiang)如(ru)下。
型(xing)(xing)(xing)芯(xin)同型(xing)(xing)(xing)腔一樣(yang)是鋼料(liao),材料(liao)較硬,應盡量采用(yong)有(you)刀(dao)(dao)把的刀(dao)(dao)具加(jia)工。型(xing)(xing)(xing)芯(xin)加(jia)工時(shi)(shi)常遇(yu)到(dao)的問(wen)(wen)題是球(qiu)(qiu)頭刀(dao)(dao)不(bu)易清除利角,這時(shi)(shi)可(ke)以(yi)(yi)用(yong)端(duan)銑刀(dao)(dao)走曲面(mian)、徒斜(xie)面(mian)加(jia)工清角。注意型(xing)(xing)(xing)芯(xin)與(yu)藏(zang)型(xing)(xing)(xing)芯(xin)框(kuang)的配(pei)合(he),加(jia)工藏(zang)型(xing)(xing)(xing)芯(xin)框(kuang)時(shi)(shi),要(yao)注意多(duo)走幾遍空刀(dao)(dao),不(bu)然藏(zang)型(xing)(xing)(xing)芯(xin)框(kuang)會有(you)斜(xie)度,即上邊準數,下邊小,這樣(yang)就很(hen)難(nan)配(pei)模(mo),特別(bie)是較深的藏(zang)型(xing)(xing)(xing)芯(xin)框(kuang),一定要(yao)注意這個(ge)問(wen)(wen)題,精(jing)加(jia)工框(kuang)的刀(dao)(dao)具也要(yao)新刀(dao)(dao),并且選用(yong)大一點的刀(dao)(dao)具。如果型(xing)(xing)(xing)芯(xin)太高(gao),可(ke)以(yi)(yi)先(xian)翻過來加(jia)工框(kuang)位(wei),用(yong)球(qiu)(qiu)頭刀(dao)(dao)精(jing)加(jia)工形(xing)狀時(shi)(shi)一定要(yao)保護止口(kou)臺(tai)階(jie)。為了方便配(pei)模(mo)時(shi)(shi),框(kuang)尺寸可(ke)以(yi)(yi)比型(xing)(xing)(xing)芯(xin)外形(xing)尺寸小0.02mm,型(xing)(xing)(xing)芯(xin)精(jing)加(jia)工時(shi)(shi)公(gong)(gong)差和步距可(ke)以(yi)(yi)稍大一點,公(gong)(gong)差為0.01~0.03mm,步距為0.2~0.05mm。