一、直線導軌是什么

直(zhi)線(xian)(xian)(xian)導(dao)軌(gui)(gui)又(you)稱線(xian)(xian)(xian)軌(gui)(gui)、滑軌(gui)(gui)、線(xian)(xian)(xian)性(xing)導(dao)軌(gui)(gui)、線(xian)(xian)(xian)性(xing)滑軌(gui)(gui)，用(yong)于高(gao)(gao)精或高(gao)(gao)速直(zhi)線(xian)(xian)(xian)往(wang)復運(yun)動場合，且可(ke)以承(cheng)擔(dan)一(yi)定的(de)扭矩(ju)，可(ke)在高(gao)(gao)負載(zai)的(de)情況下實現高(gao)(gao)精度的(de)直(zhi)線(xian)(xian)(xian)運(yun)動。在大陸稱直(zhi)線(xian)(xian)(xian)導(dao)軌(gui)(gui)，臺灣一(yi)般(ban)稱線(xian)(xian)(xian)性(xing)導(dao)軌(gui)(gui)，線(xian)(xian)(xian)性(xing)滑軌(gui)(gui)。

二、直線導軌的作用

直(zhi)(zhi)(zhi)線(xian)(xian)(xian)導(dao)軌(gui)運(yun)動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)作(zuo)用(yong)是(shi)用(yong)來支撐(cheng)和引導(dao)運(yun)動(dong)(dong)(dong)(dong)部(bu)件(jian)(jian)，按給定的(de)(de)(de)(de)方向(xiang)做往(wang)復直(zhi)(zhi)(zhi)線(xian)(xian)(xian)運(yun)動(dong)(dong)(dong)(dong)。直(zhi)(zhi)(zhi)線(xian)(xian)(xian)軸承主(zhu)要用(yong)在自動(dong)(dong)(dong)(dong)化機(ji)(ji)械上比較多，像德國進口(kou)的(de)(de)(de)(de)機(ji)(ji)床，折彎機(ji)(ji)，激光焊接(jie)機(ji)(ji)等(deng)(deng)等(deng)(deng)。當然直(zhi)(zhi)(zhi)線(xian)(xian)(xian)軸承和直(zhi)(zhi)(zhi)線(xian)(xian)(xian)軸是(shi)配套(tao)用(yong)的(de)(de)(de)(de)。像直(zhi)(zhi)(zhi)線(xian)(xian)(xian)導(dao)軌(gui)主(zhu)要是(shi)用(yong)在精度要求比較高的(de)(de)(de)(de)機(ji)(ji)械結構上，直(zhi)(zhi)(zhi)線(xian)(xian)(xian)導(dao)軌(gui)的(de)(de)(de)(de)移動(dong)(dong)(dong)(dong)元件(jian)(jian)和固定元件(jian)(jian)之間(jian)不用(yong)中間(jian)介質(zhi)，而(er)用(yong)滾動(dong)(dong)(dong)(dong)鋼球(qiu)。因為(wei)滾動(dong)(dong)(dong)(dong)鋼球(qiu)適(shi)應于高速運(yun)動(dong)(dong)(dong)(dong)、摩(mo)擦系(xi)數小、靈(ling)敏度高，滿足運(yun)動(dong)(dong)(dong)(dong)部(bu)件(jian)(jian)的(de)(de)(de)(de)工作(zuo)要求，如機(ji)(ji)床的(de)(de)(de)(de)刀架(jia)(jia)，拖板等(deng)(deng)。如果作(zuo)用(yong)在鋼球(qiu)上的(de)(de)(de)(de)作(zuo)用(yong)力太大(da)，鋼球(qiu)經(jing)受預加(jia)負荷時間(jian)過長，導(dao)致支架(jia)(jia)運(yun)動(dong)(dong)(dong)(dong)阻力增大(da)。

三、直線導軌的工作原理

可以理解為是(shi)一(yi)(yi)種滾動導引，是(shi)由鋼珠在滑塊跟(gen)導軌之(zhi)間無限滾動循(xun)環，從而(er)使(shi)負載平(ping)臺沿著導軌輕易的(de)高精(jing)度(du)線(xian)(xian)性運(yun)動，并將摩擦系(xi)(xi)數降(jiang)至(zhi)平(ping)常傳統(tong)(tong)滑動導引的(de)五十分之(zhi)一(yi)(yi)，能輕易地(di)達到很高的(de)定(ding)位精(jing)度(du)。滑塊跟(gen)導軌間末制單元設計(ji)，使(shi)線(xian)(xian)形導軌同(tong)時承(cheng)受上下(xia)左右等各方向(xiang)的(de)負荷，專利的(de)回流(liu)系(xi)(xi)統(tong)(tong)及(ji)精(jing)簡化的(de)結構設計(ji)讓線(xian)(xian)性導軌有更平(ping)順且(qie)低噪音的(de)運(yun)動。

四、直線導軌有幾種類型

1、按結構來分

直線(xian)(xian)(xian)導軌(gui)可分為三類(lei)：滾(gun)輪直線(xian)(xian)(xian)導軌(gui)、滾(gun)珠直線(xian)(xian)(xian)導軌(gui)、圓柱直線(xian)(xian)(xian)導軌(gui)，是(shi)用來做(zuo)引(yin)導和支撐(cheng)效果的，按指定的方(fang)向做(zuo)直線(xian)(xian)(xian)反復運動。

2、按摩擦性質來分

直線運(yun)動導軌又分(fen)為(wei)翻滾(gun)摩擦(ca)導軌、滑(hua)動摩擦(ca)導軌、流體摩擦(ca)導軌、彈性摩擦(ca)導軌等(deng)等(deng)品種，較為(wei)繁復。

3、按效果來分

直(zhi)(zhi)線導(dao)軌可分為單(dan)軸芯(xin)直(zhi)(zhi)線導(dao)軌、雙軸芯(xin)滾輪直(zhi)(zhi)線導(dao)軌、方形滾珠直(zhi)(zhi)線導(dao)軌。

五、直線導軌型號尺寸是多少

品牌直線導軌型號為15，20，25，30，35，45，55，65，尺寸(cun)是(shi)15到(dao)(dao)15，20到(dao)(dao)20，25到(dao)(dao)23，30到(dao)(dao)28，35到(dao)(dao)34，45到(dao)(dao)45，55到(dao)(dao)53，65到(dao)(dao)63。