The working principle of the linear guide rail can be understood as a kind of rolling guidance, which is an infinite rolling cycle between the sliding block and the linear guide rail by the steel ball, so that the load platform can easily move along the guide rail with high-precision linear motion, and reduce the friction coefficient to one fiftieth of the ordinary traditional sliding guidance, which can easily achieve high positioning accuracy. The final unit design between the sliding block and the guide rail makes the linear guide rail bear the load in the up, down, left, right and other directions at the same time. The specific reflux system and the refined and simplified structural design make the linear guide rail of HIWIN move more smoothly and with low noise. Slider - converts motion from a curve to a straight line. The new guide rail system enables the machine tool to obtain rapid feed speed. Under the condition of the same spindle speed, rapid feed is the characteristic of linear guide rail.

直線導軌與平面導軌一樣，有兩個基本元件；一個作為導向的為固定元件，另一個是移動元件。由于直線導軌是標準部件，對機床制造廠來說．要做的只是加工一個安裝導軌的平面和校調導軌的平行度。當然，為了保證機床的精度，床身或立柱少量的刮研是必不可少的，在多數情況下，安裝是比較簡單的。作為導向的導軌為淬硬鋼，經精磨后置于安裝平面上。與平面導軌比較，直線導軌橫截面的幾何形狀，比平面導軌復雜，復雜的原因是因為導軌上需要加工出溝槽，以利于滑動元件的移動，溝槽的形狀和數量，取決于機床要完成的功能。例如：一個既承受直線作用力，又承受顛覆力矩的導軌系統，與僅承受直線作用力的導軌相比．設計上有很大的不同。

Like plane guide rail, linear guide rail has two basic elements; One as a guide is a fixed element, and the other is a moving element. As the linear guide rail is a standard part, for the machine tool manufacturer, all it needs to do is process the plane of an installation guide rail and adjust the parallelism of the guide rail. Of course, in order to ensure the accuracy of the machine tool, a small amount of scraping and grinding of the bed or column is essential. In most cases, the installation is relatively simple. The guide rail as a guide is made of hardened steel and placed on the installation plane after fine grinding. Compared with the plane guide rail, the geometry of the cross section of the linear guide rail is more complex than the plane guide rail. The reason for the complexity is that the guide rail needs to be processed with grooves to facilitate the movement of sliding elements. The shape and quantity of grooves depend on the functions to be completed by the machine tool. For example, the design of a guide rail system that bears both linear force and overturning moment is very different from that of a guide rail that only bears linear force.

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