溫州CNC加工是利用自(zi)動(dong)控制系統安(an)裝數(shu)(shu)字程(cheng)(cheng)序流(liu)程(cheng)(cheng)命令，控制數(shu)(shu)控機床軸(zhou)承的自(zi)動(dong)啟停、換向和變速。可(ke)以(yi)挑選(xuan)數(shu)(shu)控刀片，改變數(shu)(shu)控刀片的鉆削量和走動(dong)運動(dong)軌跡，進(jin)行終生加工需(xu)要的各種(zhong)各樣輔助姿勢(shi)。

溫州CNC加工可以降低工作量，生產制造出加工方法復雜的零件，只需要改變工藝流程。溫州CNC加工相對平穩，不會(hui)造成加(jia)(jia)工誤差。影響CNC加(jia)(jia)工的精度的原因有哪些？

一、CNC加工機床定位引起的加工精度誤差(cha)

從零件加(jia)工(gong)(gong)的(de)(de)長(chang)期數(shu)據(ju)分析和實際操(cao)作中可以看(kan)出CNC加(jia)工(gong)(gong)機(ji)床(chuang)定(ding)(ding)位(wei)(wei)引(yin)起的(de)(de)加(jia)工(gong)(gong)精度(du)誤(wu)差。機(ji)床(chuang)的(de)(de)定(ding)(ding)位(wei)(wei)對數(shu)控(kong)機(ji)床(chuang)的(de)(de)加(jia)工(gong)(gong)精度(du)有很(hen)大影響。從構造(zao)上看(kan)，數(shu)控(kong)機(ji)床(chuang)的(de)(de)加(jia)工(gong)(gong)誤(wu)差主要(yao)是(shi)由(you)精度(du)等級引(yin)起的(de)(de)，機(ji)床(chuang)進給(gei)系統是(shi)影響精度(du)等級的(de)(de)關鍵階段。

數(shu)控(kong)機(ji)床(chuang)的(de)進給(gei)系(xi)統(tong)一(yi)(yi)般由機(ji)械(xie)(xie)傳動系(xi)統(tong)和電氣(qi)控(kong)制系(xi)統(tong)構(gou)成。在(zai)總體(ti)設計(ji)中(zhong)，精度(du)等級與(yu)機(ji)械(xie)(xie)傳動系(xi)統(tong)相關。在(zai)閉環控(kong)制系(xi)統(tong)中(zhong)，數(shu)控(kong)機(ji)床(chuang)一(yi)(yi)般可以根據(ju)定位檢驗設備來(lai)避免進給(gei)系(xi)統(tong)中(zhong)關鍵(jian)構(gou)件(jian)(jian)(如滾珠絲桿和別的(de)構(gou)件(jian)(jian))的(de)位置誤(wu)差。對(dui)于開環系(xi)統(tong)，因為影(ying)響(xiang)(xiang)因素多、條(tiao)件(jian)(jian)復雜，沒法開展(zhan)定位檢測，因而數(shu)控(kong)機(ji)床(chuang)的(de)加工(gong)精度(du)遭受很大(da)影(ying)響(xiang)(xiang)。

 二、CNC加工位置誤差對加工精度(du)的影響

位(wei)(wei)(wei)置誤(wu)(wu)差是(shi)指被加工(gong)零(ling)件(jian)的(de)(de)具(ju)體表層、中(zhong)(zhong)心線或對稱(cheng)性(xing)臉(lian)相對于(yu)其理想(xiang)化位(wei)(wei)(wei)置的(de)(de)互相位(wei)(wei)(wei)置的(de)(de)轉(zhuan)變或偏移水(shui)平，如平整度、對稱(cheng)度、對稱(cheng)度等。數控機(ji)床(chuang)加工(gong)中(zhong)(zhong)的(de)(de)位(wei)(wei)(wei)置誤(wu)(wu)差一般指過流保護(hu)誤(wu)(wu)差。造(zao)(zao)成位(wei)(wei)(wei)置誤(wu)(wu)差的(de)(de)關鍵緣故是(shi)機(ji)床(chuang)零(ling)件(jian)加工(gong)全過程中(zhong)(zhong)傳動系(xi)統(tong)(tong)造(zao)(zao)成的(de)(de)空隙(xi)和彈性(xing)變形引起的(de)(de)加工(gong)誤(wu)(wu)差，及其生(sheng)產過程中(zhong)(zhong)專用工(gong)具(ju)頭(tou)需要(yao)(yao)擺(bai)脫(tuo)的(de)(de)滑動摩(mo)擦力等要(yao)(yao)素引起的(de)(de)位(wei)(wei)(wei)置誤(wu)(wu)差。在開環系(xi)統(tong)(tong)中(zhong)(zhong)，位(wei)(wei)(wei)置精密(mi)度遭(zao)受(shou)很大影響，而在閉環控制轉(zhuan)向頭(tou)燈(deng)系(xi)統(tong)(tong)中(zhong)(zhong)，位(wei)(wei)(wei)置精密(mi)度關鍵在于(yu)偏移檢驗。

三、CNC加(jia)工(gong)的(de)幾何圖形誤差(cha)引起的(de)加(jia)工(gong)精度誤差(cha)

在數(shu)控(kong)(kong)機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)的(de)(de)加(jia)(jia)工(gong)(gong)(gong)中(zhong)(zhong)，因為外(wai)(wai)力作用、加(jia)(jia)工(gong)(gong)(gong)中(zhong)(zhong)造成的(de)(de)發熱量等(deng)外(wai)(wai)界(jie)要(yao)(yao)素(su)的(de)(de)影響(xiang)，機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)的(de)(de)幾(ji)何圖形(xing)(xing)(xing)精(jing)密度遭受影響(xiang)，在機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)上加(jia)(jia)工(gong)(gong)(gong)的(de)(de)零件(jian)(jian)的(de)(de)幾(ji)何圖形(xing)(xing)(xing)形(xing)(xing)(xing)變會造成幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差。據科學研究，數(shu)控(kong)(kong)機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差關(guan)(guan)鍵有兩個(ge)緣故：內(nei)部要(yao)(yao)素(su)和(he)外(wai)(wai)界(jie)要(yao)(yao)素(su)。引起機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差的(de)(de)內(nei)部要(yao)(yao)素(su)是指(zhi)由(you)機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)本身要(yao)(yao)素(su)引起的(de)(de)幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差，如機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)工(gong)(gong)(gong)作臺(tai)的(de)(de)平整度、機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)導軌的(de)(de)平整度和(he)平行度、機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)專(zhuan)用工(gong)(gong)(gong)具(ju)和(he)工(gong)(gong)(gong)裝夾具(ju)的(de)(de)幾(ji)何圖形(xing)(xing)(xing)精(jing)密度等(deng)。外(wai)(wai)界(jie)要(yao)(yao)素(su)關(guan)(guan)鍵指(zhi)生(sheng)產過(guo)程(cheng)中(zhong)(zhong)受環(huan)境(jing)因素(su)和(he)熱形(xing)(xing)(xing)變影響(xiang)而造成的(de)(de)幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差。比如，鉆削全過(guo)程(cheng)中(zhong)(zhong)數(shu)控(kong)(kong)刀片或零件(jian)(jian)的(de)(de)熱變形(xing)(xing)(xing)和(he)形(xing)(xing)(xing)變造成的(de)(de)幾(ji)何圖形(xing)(xing)(xing)誤(wu)(wu)(wu)(wu)差會影響(xiang)機(ji)(ji)(ji)(ji)(ji)床(chuang)(chuang)和(he)零件(jian)(jian)的(de)(de)加(jia)(jia)工(gong)(gong)(gong)精(jing)度。