Precision guide rails play an indispensable and important role in factory manufacturing, widely used in CNC automation equipment. They are a high-precision transmission component, and some slight deviations or vibrations can cause adverse consequences to our production. So how to improve the stability of guide rails? Please have the manufacturer explain it to you below.

By selecting steel balls and installing oversized steel balls between the guide rails, the movement resistance of the support is increased, thereby solving the balance effect of PMI micro linear guide rails. In order to improve the sensitivity of the guide rail, we can reduce the resistance to motion and correspondingly improve the motion accuracy. The premise is that as long as we add enough pre added negative numbers, we can make the fixed components and moving components have a larger contact area, which can improve the bearing capacity of the system and not only expand the tolerance of the area.

While ensuring the stability of the linear guide rail, there is no intermediate medium between the moving and fixed components of the linear guide rail, and rolling steel balls are used instead. Rolling steel balls are suitable for high-speed motion, have low friction coefficient, high sensitivity, and meet the working requirements of moving parts, such as tool holders and drag plates of machine tools. The basic function of the fixed component (guide rail) of the linear guide rail system is like a bearing ring, a bracket for installing steel balls, with a shape of "v". The bracket wraps around the top and two sides of the guide rail. In order to support the working components of the machine tool, a set of linear guides has at least four brackets.

Used to support large working components, the number of brackets can be more than four. When the working components of the machine tool move, the steel balls circulate in the grooves of the bracket, distributing the wear of the bracket to each steel ball, thereby extending the service life of the precision guide rail. In order to eliminate the gap between the bracket and the guide rail, preloading can improve the stability of the guide rail system and obtain preloading. It is to install oversized steel balls between the guide rail and bracket. The diameter tolerance of the steel ball is ± 20 microns. In increments of 0.5 microns, the steel balls are sorted and installed on the guide rails. The size of the pre applied load depends on the force acting on the steel ball. If the force acting on the steel ball is too large, the steel ball will withstand the pre load for too long, resulting in an increase in the resistance of the bracket movement.