Linear guide rail, also known as line rail, slide rail, linear guide rail and linear slide rail, is used for high-precision or high-speed linear reciprocating motion occasions, and can bear a certain torque and realize high-precision linear motion under high load. It is called linear guide rail in Chinese mainland and linear guide rail and linear slide rail in Taiwan Province Province.
Linear guides can be divided into roller linear guides, cylindrical linear guides and ball linear guides. According to the different friction properties, linear motion guide can be divided into sliding friction guide, rolling friction guide, elastic friction guide and fluid friction guide.
Second, the role of linear guide rail
The function of linear guide rail motion is to support and guide the moving parts to do reciprocating linear motion in a given direction. Linear bearing is mainly used in automatic machinery, such as machine tools, bending machines and laser welding machines. Of course, linear bearing and linear axis are used together. Linear guide rails are mainly used in mechanical structures with high precision requirements. Rolling steel balls are used to replace the intermediate medium between the moving element and the fixed element of the linear guide rail. Because the rolling steel ball is suitable for high-speed movement, it has low friction coefficient and high sensitivity, and meets the working requirements of moving parts, such as tool rest and carriage of machine tools. If the force acting on the steel ball is too large and the steel ball is preloaded for too long, the movement resistance of the support will increase.
Third, the working principle of linear guide rail
It can be understood as a rolling guide, in which the steel ball rolls endlessly between the slider and the guide rail, so that the load platform can easily move linearly along the guide rail with high precision, and the friction coefficient can be reduced to one fiftieth of that of the ordinary traditional sliding guide, so that high positioning accuracy can be easily realized. The final unit design between the slider and the guide rail makes the linear guide rail bear loads in all directions at the same time. Patented reflux system and simplified structural design make the linear guide rail move more smoothly and with low noise.