CNC數控車床加工工藝的幾個基本準則
人氣：1873發(fa)表時間：2020/2/25 10:48:00
CNC數控車床的整個(ge)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)都是經過(guo)執行工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)的加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)程序來實現的。因此加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)程序編(bian)制的好壞直(zhi)接影響工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)終究(jiu)的加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)精度(du)和加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)效率。而工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)程序編(bian)制的條件(jian)是工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)組織的確認。CNC數控車床高效數控加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)應當遵從的工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)準則，期(qi)望對咱們有些幫助。咱們知道，CNC數控車床是一種高度(du)復合型的加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)設備，在工(gong)(gong)(gong)(gong)(gong)(gong)件(jian)加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)程序編(bian)制前，要根據(ju)其圖紙(zhi)的設計要求和加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)內(nei)容，確認好其加(jia)(jia)工(gong)(gong)(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)(gong)(gong)藝(yi)。
一般來說，加(jia)工工藝的確認準則應當遵從一下幾個基本準則：
一(yi)(yi)、先粗后精(jing)的加(jia)工(gong)(gong)(gong)準(zhun)則(ze) 一(yi)(yi)般情況(kuang)下，為(wei)了(le)確保工(gong)(gong)(gong)件(jian)終究的加(jia)工(gong)(gong)(gong)質量(liang)，咱們將工(gong)(gong)(gong)件(jian)加(jia)工(gong)(gong)(gong)劃分為(wei)粗加(jia)工(gong)(gong)(gong)和(he)精(jing)加(jia)工(gong)(gong)(gong)兩個階(jie)段，關(guan)于加(jia)工(gong)(gong)(gong)精(jing)度較高(gao)的工(gong)(gong)(gong)件(jian)還添加(jia)一(yi)(yi)道半精(jing)加(jia)工(gong)(gong)(gong)階(jie)段。在CNC數控車(che)床進行數控加(jia)工(gong)(gong)(gong)時也應當(dang)遵(zun)從(cong)這一(yi)(yi)準(zhun)則(ze)。
CNC數(shu)控(kong)車床(chuang)車削加(jia)工工件粗加(jia)工時(shi)可快速切除大(da)部分加(jia)工余量、盡可能削減走刀(dao)次數(shu)，縮短粗加(jia)時(shi)刻；精(jing)加(jia)工時(shi)主(zhu)要確保工件加(jia)工的精(jing)度和(he)外表質量，故一(yi)般精(jing)加(jia)工時(shi)工件的終(zhong)究(jiu)概括應由(you)最終(zhong)一(yi)刀(dao)連續精(jing)加(jia)工而成。
二、一次(ci)裝(zhuang)(zhuang)夾定位的準則 一次(ci)裝(zhuang)(zhuang)夾實現工(gong)件多工(gong)序加工(gong)是CNC數控(kong)車(che)床(chuang)的基本加工(gong)特色。因此在確認工(gong)件加工(gong)工(gong)藝(yi)時，應當(dang){zd0}極(ji)限的集中各加工(gong)工(gong)序。盡(jin)可(ke)能的削減(jian)裝(zhuang)(zhuang)夾次(ci)數，以削減(jian)不必要(yao)的定位誤(wu)差和重復裝(zhuang)(zhuang)夾進程。
三、先內(nei)(nei)后(hou)外(wai)的加(jia)(jia)工(gong)準則 當待加(jia)(jia)工(gong)工(gong)件(jian)既有(you)內(nei)(nei)外(wai)表(biao)(biao)又(you)有(you)外(wai)外(wai)表(biao)(biao)需(xu)要(yao)加(jia)(jia)工(gong)時(shi)，在組織加(jia)(jia)工(gong)順序時(shi)，應當先進(jin)(jin)行(xing)工(gong)件(jian)的內(nei)(nei)外(wai)表(biao)(biao)加(jia)(jia)工(gong)后(hou)進(jin)(jin)行(xing)外(wai)外(wai)表(biao)(biao)，如(ru)進(jin)(jin)行(xing)分(fen)階段加(jia)(jia)工(gong)，也應先進(jin)(jin)行(xing)內(nei)(nei)外(wai)外(wai)表(biao)(biao)粗加(jia)(jia)工(gong)，后(hou)進(jin)(jin)行(xing)內(nei)(nei)外(wai)外(wai)表(biao)(biao)的精加(jia)(jia)工(gong)。
前面(mian)(mian)咱們(men)說過，CNC數控車(che)床是一(yi)(yi)種復合型的加(jia)工(gong)機床，它不僅能夠進行車(che)削也可(ke)進行鏜(tang)削加(jia)工(gong)。關(guan)于待加(jia)工(gong)工(gong)件(jian)上既有平面(mian)(mian)也有孔(kong)(kong)時，應當先車(che)平面(mian)(mian)后(hou)鏜(tang)孔(kong)(kong)的順序進行、由于車(che)平面(mian)(mian)時切削力較(jiao)大(da)，工(gong)件(jian)易發作(zuo)變(bian)形(xing)，先車(che)面(mian)(mian)后(hou)鏜(tang)孔(kong)(kong)，使(shi)其有一(yi)(yi)段時刻康復，待其康復變(bian)形(xing)后(hou)再鏜(tang)孔(kong)(kong)，有利于確保孔(kong)(kong)的加(jia)工(gong)精度。