With the rapid economic growth, the development of guide rail has also made remarkable achievements. Linear guide rail is used in woodworking machinery, conveying machinery, electronic semiconductor equipment, robots, mechanical arms, etc., but sometimes many people don't know the difference between linear guide rail and linear slide rail, and confuse the two, although they are both parts of machinery, Bear a certain load and realize high-precision movement under high load. However, the linear guide rail and the linear slide rail are not the same before, and there are still different places.

直線導(dǎo)軌按照滾珠在導(dǎo)軌和滑塊之間的接觸牙型對直線導(dǎo)軌副進行分類，主要有歌德式牙型和圓弧式牙型。歌德式也稱作兩列式，圓弧式也稱作四列式。由于圓弧式牙型其接觸角在傳動中易變動，產(chǎn)生間隙與側(cè)向力變動，安裝容易。而歌德式牙型其接觸角能保持不變，剛性也比較穩(wěn)定。一般而言直線導(dǎo)軌的常用結(jié)構(gòu)以這兩種類型為主。通常，直線導(dǎo)軌副的選用需要根據(jù)使用條件、負載能力和預(yù)期壽命選用。

The linear guide rail pair is classified according to the contact tooth pattern of the ball between the guide rail and the sliding block, mainly including Gothic tooth pattern and arc tooth pattern. Goethe type is also called two column type, and circular arc type is also called four column type. Due to the circular arc tooth, its contact angle is easy to change in transmission, resulting in the change of clearance and lateral force, which is easy to install. However, the contact angle and rigidity of the Gothic tooth form can remain unchanged. Generally speaking, the common structures of linear guide rail are mainly these two types. Generally, the selection of linear guide rail pair needs to be selected according to the service conditions, load capacity and expected life.

直線導(dǎo)軌又可以分為滑動導(dǎo)軌和滾動導(dǎo)軌?；瑒訉?dǎo)軌是導(dǎo)軌和滑塊直接接觸，較低，精度也低，摩擦系數(shù)大。滾動導(dǎo)軌是在導(dǎo)軌和滑塊之間裝有滾動體，滾動導(dǎo)軌，結(jié)構(gòu)較復(fù)雜，也比較高點，摩擦系數(shù)小，精度高，它的作用主要用來支撐和引導(dǎo)運動部件，讓它按照指定的方向做復(fù)線運動。由鋼珠在滑塊與導(dǎo)軌之間做無限的循環(huán)滾動，讓一些負載的平臺可以沿著導(dǎo)軌以高精度做線性運動，大大降低了摩擦系數(shù)，是比普通傳統(tǒng)的的滑動導(dǎo)軌1/50。

Linear guide rail can be divided into sliding guide rail and rolling guide rail. The sliding guide rail is in direct contact with the sliding block, with low price, low precision and large friction coefficient. The rolling guide rail is equipped with a rolling element between the guide rail and the sliding block. The rolling guide rail has complex structure, high price, small friction coefficient and high precision. Its function is mainly to support and guide the moving parts and make them move in a double line according to the specified direction. The steel ball makes infinite circular rolling between the sliding block and the guide rail, so that some loaded platforms can move linearly with high precision along the guide rail, greatly reducing the friction coefficient, which is 1 / 50 higher than the ordinary traditional sliding guide rail.

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