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如何對加工工序進行劃分

返回列表加入收藏加入收藏 來源:鑫偉科精密 發布日期:2019-11-27 12:27 |

數控加工(gong)工(gong)序的劃分一般可按下(xia)列方(fang)(fang)法進行:

(1)刀(dao)(dao)具(ju)(ju)(ju)集中分(fen)(fen)序(xu)法 就是按(an)所用(yong)刀(dao)(dao)具(ju)(ju)(ju)劃分(fen)(fen)工序(xu),用(yong)同一(yi)把刀(dao)(dao)具(ju)(ju)(ju)加(jia)工完(wan)(wan)零(ling)(ling)件上所有(you)可(ke)(ke)以(yi)(yi)完(wan)(wan)成(cheng)的(de)部(bu)(bu)位。在用(yong)第(di)(di)二把刀(dao)(dao)、第(di)(di)三把完(wan)(wan)成(cheng)它們可(ke)(ke)以(yi)(yi)完(wan)(wan)成(cheng)的(de)其它部(bu)(bu)位。這樣(yang)可(ke)(ke)減(jian)(jian)少換刀(dao)(dao)次數,壓(ya)(ya)縮(suo)空程(cheng)(cheng)時間(jian),減(jian)(jian)少不必要(yao)的(de)定(ding)位誤(wu)差。

(2)以(yi)加(jia)(jia)(jia)工(gong)(gong)(gong)部(bu)(bu)(bu)位(wei)分(fen)(fen)序法 對于加(jia)(jia)(jia)工(gong)(gong)(gong)內(nei)(nei)(nei)容(rong)很(hen)多(duo)的(de)零(ling)件,可按(an)其(qi)結構特(te)點將(jiang)加(jia)(jia)(jia)工(gong)(gong)(gong)部(bu)(bu)(bu)分(fen)(fen)分(fen)(fen)成幾(ji)(ji)(ji)(ji)個(ge)部(bu)(bu)(bu)分(fen)(fen),如內(nei)(nei)(nei)形(xing)(xing)(xing)、外(wai)形(xing)(xing)(xing)、曲面(mian)或平面(mian)等。一般先(xian)加(jia)(jia)(jia)工(gong)(gong)(gong)平面(mian)、定位(wei)面(mian),后加(jia)(jia)(jia)工(gong)(gong)(gong)孔;先(xian)加(jia)(jia)(jia)工(gong)(gong)(gong)簡(jian)單的(de)幾(ji)(ji)(ji)(ji)何(he)形(xing)(xing)(xing)狀(zhuang),再(zai)加(jia)(jia)(jia)工(gong)(gong)(gong)復雜的(de)幾(ji)(ji)(ji)(ji)何(he)形(xing)(xing)(xing)狀(zhuang);先(xian)加(jia)(jia)(jia)工(gong)(gong)(gong)精度較(jiao)低的(de)部(bu)(bu)(bu)位(wei),再(zai)加(jia)(jia)(jia)工(gong)(gong)(gong)精度要(yao)(yao)求較(jiao)高的(de)部(bu)(bu)(bu)位(wei)。

(3)以(yi)粗(cu)、精(jing)(jing)加(jia)(jia)工(gong)分序法(fa) 對(dui)于易發(fa)生加(jia)(jia)工(gong)變形(xing)的零件,由(you)于粗(cu)加(jia)(jia)工(gong)后可能發(fa)生的變形(xing)而需要(yao)(yao)進行(xing)校(xiao)形(xing),故一般(ban)來說(shuo)凡(fan)要(yao)(yao)進行(xing)粗(cu)、精(jing)(jing)加(jia)(jia)工(gong)的都要(yao)(yao)將(jiang)工(gong)序分開。

綜上所述,在劃分工(gong)(gong)(gong)序(xu)(xu)時,一(yi)定(ding)(ding)(ding)(ding)要(yao)(yao)(yao)視零(ling)件的結(jie)構與工(gong)(gong)(gong)藝(yi)性,數(shu)控(kong)加(jia)工(gong)(gong)(gong)中(zhong)心機床的功能(neng),零(ling)件數(shu)控(kong)加(jia)工(gong)(gong)(gong)內容的多少,安(an)裝次(ci)數(shu)及本(ben)單位生(sheng)(sheng)產組(zu)織(zhi)狀況(kuang)靈活掌握(wo)。另建議(yi)采(cai)(cai)用(yong)工(gong)(gong)(gong)序(xu)(xu)集中(zhong)的原則(ze)還是采(cai)(cai)用(yong)工(gong)(gong)(gong)序(xu)(xu)分散(san)的原則(ze),要(yao)(yao)(yao)根據(ju)實(shi)際(ji)情(qing)況(kuang)來確定(ding)(ding)(ding)(ding),但一(yi)定(ding)(ding)(ding)(ding)力求(qiu)合理(li)(li)。

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