When the working parts of machine tool move, the steel ball circulates in the bracket groove, and the wear of the bracket is distributed to each steel ball, thus prolonging the service life of the linear guide rail. In order to eliminate the gap between the guide rail and the guide rail, preloading can improve the stability of the guide rail system and obtain preloading, that is, installing extra large steel balls between the guide rail and the guide rail. The diameter tolerance of the steel ball is (+20 micron), and the steel ball is screened by 0.5 micron increment, and installed on the guide rail respectively. The preloading load depends on the force acting on the steel ball.

　　大家知道如何提高导轨系统的稳定性吗？-导轨丝杠：http://tianboo.net

　　Do you know how to improve the stability of the guideway system? - Guide screw: http://tianboo.net

　　如果作用在钢球上的力过大，钢球承受预紧力的时间过长，会增加支架的运动阻力。这里有一个平衡行为的问题;为了提高系统的灵敏度，减小运动阻力，需要相应减小预紧力。为了提高运动精度和精度维护，需要足够的预加载负数，这是矛盾的两个方面。

　　If the force acting on the steel ball is too large, the steel ball will bear the preload for too long, which will increase the movement resistance of the bracket. There is a problem of equilibrium behavior; in order to improve the sensitivity of the system and reduce the motion resistance, it is necessary to reduce the preload accordingly. In order to improve the accuracy and maintenance of motion, sufficient negative preload is needed, which is two contradictory aspects.

　　导轨系统设计时，力求使固定件与运动件之间的接触面积较大，这不仅可以提高系统的承载能力，而且还可以使系统承受间歇性切削或重力切削冲击力，使受力范围广泛，扩大轴承面积。为了达到这一目的，导轨系统有多种槽形，有代表性的有两种，一种叫格迪型(尖拱型)，形状是半圆的延伸，接触点是顶点;另一种是圆弧，也是这样。

　　When designing the guideway system, the contact area between the fixed parts and the moving parts is maximized, which can not only improve the bearing capacity of the system, but also make the system bear the impact force of intermittent cutting or gravity cutting, so that the force range is wide and the bearing area is enlarged. In order to achieve this goal, the guideway system has a variety of grooves, there are two representative, one is called Gedi type (pointed arch), the shape is the extension of the semi-circle, the contact point is the vertex; the other is the arc, the same is true.

　　大家知道如何提高导轨系统的稳定性吗？-导轨丝杠：http://tianboo.net

　　Do you know how to improve the stability of the guideway system? - Guide screw: http://tianboo.net

　　无论采用何种结构形式，其目的只有一个，即争取更多的轧制钢球半径与导轨接触(固定元件)。确定系统性能特征的关键因素是滚动元件与导轨的接触方式，这是问题的关键。努力使固定件与移动件之间的接触面积达到较大，这不仅可以提高系统的承载能力，还可以使系统能够承受间歇切削或重力切削产生的冲击力，使力得到广泛的分散，从而扩大了承载面积。为了达到这一目的，导轨系统有多种槽形，有代表性的有两种，一种叫ge ti(尖拱)，形状是半圆的延伸，接触点是顶点;另一个是做同样事情的圆弧。

　　No matter what kind of structure is adopted, there is only one purpose, that is, to strive for more rolling ball radius to contact with the guide rail (fixed elements). The key factor to determine the system performance characteristics is the contact mode between rolling element and guide rail, which is the key to the problem. Efforts to maximize the contact area between fixtures and moving parts can not only improve the bearing capacity of the system, but also enable the system to withstand the impact force produced by intermittent cutting or gravity cutting, so that the force is widely dispersed, thus expanding the bearing area. In order to achieve this goal, the guideway system has a variety of grooves, there are two representative, one is called Ge Ti (pointed arch), the shape is the extension of the semi-circle, the contact point is the vertex; the other is the arc doing the same thing.