機加工中會用到哪些類型的數控機床

    機(ji)加工(gong)中數(shu)控(kong)(kong)(kong)機(ji)床(chuang)的(de)品種、規(gui)格(ge)繁(fan)多。按們服(fu)系(xi)統(tong)的(de)類(lei)型，可分(fen)為開環(huan)系(xi)統(tong)和(he)閉環(huan)系(xi)統(tong)兩大(da)類(lei)。校刀(dao)具(或工(gong)件)進給運(yun)動(dong)軌(gui)跡(ji)，可分(fen)力點(dian)(dian)位(wei)(wei)控(kong)(kong)(kong)制、直線(xian)控(kong)(kong)(kong)制和(he)輪廓控(kong)(kong)(kong)制三類(lei)。技工(gong)藝用(yong)途可分(fen)為一般數(shu)控(kong)(kong)(kong)機(ji)床(chuang)和(he)自(zi)動(dong)換刀(dao)數(shu)控(kong)(kong)(kong)機(ji)床(chuang)兩類(lei)。點(dian)(dian)位(wei)(wei)控(kong)(kong)(kong)制系(xi)統(tong)只(zhi)要求獲得正確的(de)加工(gong)坐標(biao)點(dian)(dian)位(wei)(wei)置，從這個位(wei)(wei)置到另(ling)一個位(wei)(wei)置的(de)運(yun)動(dong)過程(cheng)并不進行加工(gong)，所以運(yun)動(dong)軌(gui)跡(ji)不需要嚴格(ge)控(kong)(kong)(kong)制。例如數(shu)控(kong)(kong)(kong)鉆床(chuang)、坐標(biao)鋁床(chuang)和(he)沖、壓(ya)床(chuang)都足(zu)采(cai)用(yong)點(dian)(dian)位(wei)(wei)控(kong)(kong)(kong)制系(xi)統(tong)。

    在機械加工過程中(zhong)直(zhi)線控(kong)制系(xi)統除了要(yao)求控(kong)制位(wei)(wei)移起、終點(dian)的準確位(wei)(wei)置(zhi)外(wai)，還要(yao)求控(kong)制兩個坐標點(dian)之間(jian)的位(wei)(wei)移軌(gui)跡是一條(tiao)直(zhi)線，并以指定的進給速(su)度進行切削(xue)。例如(ru)，數控(kong)銑(xian)床銑(xian)削(xue)平面，車(che)床車(che)削(xue)階梯軸等(deng)。

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