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直線導軌主(zhu)要有滑塊和(he)導軌(gui)(gui)組(zu)成，滑塊主(zhu)要應用于(yu)(yu)滑動(dong)(dong)摩(mo)擦(ca)(ca)(ca)導軌(gui)(gui)。直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)導軌(gui)(gui)又(you)稱線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)軌(gui)(gui)、滑軌(gui)(gui)、線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)導軌(gui)(gui)、線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)滑軌(gui)(gui)，用于(yu)(yu)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)往復運(yun)動(dong)(dong)場合，且可(ke)以承擔一(yi)定(ding)的(de)(de)扭矩，可(ke)在(zai)(zai)(zai)高(gao)負(fu)載(zai)的(de)(de)情況(kuang)下實(shi)現(xian)高(gao)精度(du)的(de)(de)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)運(yun)動(dong)(dong)。在(zai)(zai)(zai)大陸(lu)稱直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)導軌(gui)(gui)，臺灣一(yi)般稱線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)導軌(gui)(gui)，線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)性(xing)(xing)滑軌(gui)(gui)。直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)導軌(gui)(gui)運(yun)動(dong)(dong)的(de)(de)作(zuo)用是用來支撐和(he)引導運(yun)動(dong)(dong)部件，按(an)給定(ding)的(de)(de)方(fang)向做(zuo)往復直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)運(yun)動(dong)(dong)。依按(an)摩(mo)擦(ca)(ca)(ca)性(xing)(xing)質(zhi)而(er)定(ding)，直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)運(yun)動(dong)(dong)導軌(gui)(gui)可(ke)以分(fen)為(wei)滑動(dong)(dong)摩(mo)擦(ca)(ca)(ca)導軌(gui)(gui)、滾動(dong)(dong)摩(mo)擦(ca)(ca)(ca)導軌(gui)(gui)、彈性(xing)(xing)摩(mo)擦(ca)(ca)(ca)導軌(gui)(gui)、流體摩(mo)擦(ca)(ca)(ca)導軌(gui)(gui)等(deng)種類。直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)軸(zhou)承主(zhu)要用在(zai)(zai)(zai)自動(dong)(dong)化機(ji)械(xie)上(shang)比(bi)(bi)較多(duo)，像(xiang)德(de)國進口(kou)的(de)(de)機(ji)床，折彎機(ji)，激光焊(han)接機(ji)等(deng)等(deng)，當然直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)軸(zhou)承和(he)直(zhi)(zhi)(zhi)線(xian)(xi🦂an)(xian)(xian)(xian)(xian)(xian)(xian)軸(zhou)是配套用的(de)(de)。像(xiang)直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)導軌(gui)(gui)主(zhu)要是用在(zai)(zai)(zai)精度(du)要求比(bi)(bi)較高(gao)的(de)(de)機(ji)械(xie)結構(gou)上(shang)，直(zhi)(zhi)(zhi)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)導軌(gui)(gui)的(de)(de)移動(dong)(dong)元件和(he)固定(ding)元件之間(jian)不用中間(jian)介質(zhi)，而(er)用滾動(dong)(dong)鋼球。