CNC加工工序劃分有什么要求呢

CNC加工在辨別工序時，必然要視零件的布局與工藝性，數控加工中間機床的功用，零件數控加工內容的多少，裝配次數及本單元生產構造狀態靈敏掌握。另主意選用工序會集的規則還是選用工序疏散的規則，要根據實際環境來確定，但必然力圖合理。工序的辨別普通可按下列辦法舉行：
1、刀具會集分序法。

這(zhe)(zhe)種辦法是(shi)按(an)所用(yong)刀(dao)(dao)具(ju)辨別工(gong)序，用(yong)同(tong)一(yi)把刀(dao)(dao)具(ju)加(jia)工(gong)完零(ling)件上全部(bu)(bu)可(ke)(ke)以結束的(de)部(bu)(bu)位(wei)。為(wei)了(le)減(jian)(jian)少(shao)換刀(dao)(dao)時(shi)候，緊(jin)縮空程時(shi)候，減(jian)(jian)少(shao)無謂要的(de)定(ding)位(wei)差(cha)錯，可(ke)(ke)按(an)刀(dao)(dao)具(ju)會集工(gong)序的(de)辦法加(jia)工(gong)零(ling)件，即在一(yi)次裝夾中，盡可(ke)(ke)能用(yong)一(yi)把刀(dao)(dao)具(ju)加(jia)工(gong)出可(ke)(ke)能加(jia)工(gong)的(de)所用(yong)部(bu)(bu)位(wei)，而后再換另(ling)一(yi)把刀(dao)(dao)加(jia)工(gong)其(qi)余部(bu)(bu)位(wei)。這(zhe)(zhe)樣可(ke)(ke)減(jian)(jian)少(shao)換刀(dao)(dao)次數，緊(jin)縮空程時(shi)候，減(jian)(jian)少(shao)無謂要的(de)定(ding)位(wei)差(cha)錯。
2、以加工部(bu)位分序法(fa)。
每個(ge)零件布局樣式差別，各(ge)表面的技(ji)(ji)能要求也有所差別，故加工(gong)時，其定(ding)位技(ji)(ji)巧(qiao)(qiao)各(ge)有差異，于是可根據(ju)定(ding)位技(ji)(ji)巧(qiao)(qiao)的差別來辨別工(gong)序。
關于(yu)加(jia)(jia)(jia)(jia)工(gong)(gong)內允許(xu)多(duo)的(de)零件(jian)，可按其(qi)布局特點(dian)將加(jia)(jia)(jia)(jia)工(gong)(gong)片面(mian)(mian)分成幾個片面(mian)(mian)，如內形(xing)、外(wai)形(xing)、曲面(mian)(mian)或平(ping)面(mian)(mian)等。普通(tong)先(xian)加(jia)(jia)(jia)(jia)工(gong)(gong)平(ping)面(mian)(mian)、定位面(mian)(mian)，后加(jia)(jia)(jia)(jia)工(gong)(gong)孔;先(xian)加(jia)(jia)(jia)(jia)工(gong)(gong)簡略(lve)的(de)多(duo)少樣式，再加(jia)(jia)(jia)(jia)工(gong)(gong)復雜的(de)多(duo)少樣式;先(xian)加(jia)(jia)(jia)(jia)工(gong)(gong)精(jing)度較低的(de)部(bu)位，再加(jia)(jia)(jia)(jia)工(gong)(gong)精(jing)度要求較高的(de)部(bu)位。
3、以粗、精加工分序法。
根據零(ling)(ling)件的加工(gong)(gong)(gong)精(jing)度、剛度和變形等因從來(lai)(lai)辨別工(gong)(gong)(gong)序(xu)時(shi)，可(ke)按(an)粗、精(jing)加工(gong)(gong)(gong)分離(li)的規則來(lai)(lai)辨別工(gong)(gong)(gong)序(xu)，即先粗加工(gong)(gong)(gong)再精(jing)加工(gong)(gong)(gong)，此時(shi)可(ke)用(yong)差別的機床或差別的刀(dao)具舉行加工(gong)(gong)(gong);關于易發(fa)生加工(gong)(gong)(gong)變形的零(ling)(ling)件，由于粗加工(gong)(gong)(gong)后可(ke)能發(fa)生的變形而(er)需要舉行校形，故普通(tong)來(lai)(lai)說凡要舉行粗、精(jing)加工(gong)(gong)(gong)的都要將(jiang)工(gong)(gong)(gong)序(xu)分離(li)。