What Is a Socket Rail?

Linear sliders can be divided into: roller linear guides, cylindrical linear guides, and ball linear guides. They are used to support and guide moving parts and perform reciprocating linear motions in a given direction. Depending on the nature of the friction, linear motion guides can be classified into sliding friction guides, rolling friction guides, elastic friction guides, and fluid friction guides.

Linear Guides

Linear sliders can be divided into: roller linear guides, cylindrical linear guides, and ball linear guides. They are used to support and guide moving parts and perform reciprocating linear motions in a given direction. Depending on the nature of the friction, linear motion guides can be classified into sliding friction guides, rolling friction guides, elastic friction guides, and fluid friction guides.

Chinese name

Linear Guides

Foreign name

linear slider

Classification

Roller, cylindrical, ball linear guide

Function

The moving part moves in the given direction

Linear guides are also known as linear guides,

Divided into square ball linear guide, dual-axis core roller linear guide, single-axis core linear guide.

The function of the linear guide motion is to support and guide the moving parts to make a reciprocating linear motion in a given direction. Depending on the nature of the friction, linear motion guides can be classified into sliding friction guides, rolling friction guides, elastic friction guides, and fluid friction guides. Linear bearings are mainly used in automated machinery, such as machine tools, bending machines, laser welding machines imported from Germany, etc. Of course, linear bearings and linear shafts are used in conjunction. Linear guides are mainly used on mechanical structures with high accuracy requirements. The intermediate components are not used between the moving elements and fixed components of the linear guides, but rolling steel balls are used.

The DF (45- ° 45) ° combination from the arc groove, during the installation, is caused by the elastic deformation of the steel ball and the transfer of the contact point. Even if the mounting surface is slightly deviated, it can be absorbed by the inside of the rail slider. It has the effect of self-aligning ability and obtains high-precision stable smooth motion.

Interchangeable

Due to strict control over manufacturing accuracy, the linear guide rail size can be maintained within a certain level, and the slider has a retainer design to prevent the steel balls from falling off. Therefore, some series of precision are interchangeable. Customers can order guide rails or Slider, can also store the guide rail and slider separately to reduce storage space.

High rigidity in all directions

The use of four-row arc grooves, together with four-row steel balls and other 45-degree contact angles, allows the steel balls to achieve the ideal two-point contact structure, which can withstand loads from up and down and left and right; when necessary, preload can be applied to improve rigidity.

It can be understood as a kind of rolling guide, which is an infinite rolling cycle between the slider and the guide rail by the steel ball, so that the load platform can easily move with high precision and linear movement along the guide rail, and the friction coefficient is reduced to the ordinary sliding guide One-fifth can easily achieve high positioning accuracy. The design of the final unit between the slider and the guide rail enables the linear guide rail to withstand loads from up, down, left, right, and other directions at the same time. The patented reflow system and simplified structure design make HIWIN's linear guide rails have smoother and lower noise movement.

Slider-transforms motion from a curve to a straight line. The new guide system enables the machine to obtain fast feed speeds. With the same spindle speed, fast feed is the characteristic of linear guides. Linear guides, like flat guides, have two basic elements; one is a fixed element as a guide, and the other is a moving element. Since the linear guide is a standard component, it is important for machine tool manufacturers. The only thing to do is to machine the plane of a mounting rail and adjust the parallelism of the rail. Of course, in order to ensure the accuracy of the machine tool, a small amount of scraping on the bed or column is necessary. In most cases, the installation is relatively simple. The guide rail used as the guide is hardened steel, which is placed on the installation plane after fine grinding. Compared with flat guide rails, the cross-sectional geometry of linear guide rails is more complicated than flat guide rails. The reason for this complexity is that grooves need to be machined on the guide rails to facilitate the movement of sliding elements. The shape and number of grooves depend on the machine tool to be completed Functions. For example, a rail system that can withstand both linear forces and subversive moments is compared to a rail that only receives linear forces. There is a big difference in design.

The basic function of the fixed element (rail) of the linear guide system is like a bearing ring, a bracket for mounting steel balls, and the shape is "v". The bracket wraps the top and sides of the rail. To support the machine's working parts, a set of linear guides has at least four brackets. For supporting large working parts, the number of supports can be more than four.

When the working parts of the machine tool move, the steel balls circulate in the grooves of the bracket, and the wear of the bracket is distributed to each steel ball, thereby extending the service life of the linear guide. In order to eliminate the gap between the bracket and the guide rail, pre-loading can improve the stability of the rail system and obtain the pre-loading. It is to install an oversized steel ball between the guide rail and the bracket. The tolerance of the diameter of the steel ball is ± 20 micrometers, and the steel balls are classified and classified in 0.5 micron increments and installed on the guide rails respectively. The size of the preload depends on the force acting on the steel ball. If the force acting on the steel ball is too large and the pre-loading time is too long, the resistance of the stent will increase, and the problem of balance will occur; in order to improve the sensitivity of the system and reduce the motion resistance, the pre-loading should be reduced accordingly However, in order to improve the movement accuracy and accuracy retention, sufficient pre-negative numbers are required, which are two contradictory aspects.

When the working time is too long, the steel ball starts to wear, and the pre-load applied to the steel ball starts to weaken, resulting in a reduction in the precision of the machine tool working parts. If you want to maintain the initial accuracy, you must replace the rail bracket or even the rail. If the rail system is already preloaded. The accuracy of the system has been lost and the only way is to replace the rolling elements.

The design of the guide rail system strives to have the largest contact area between the fixed and mobile components. This not only improves the carrying capacity of the system, but also the system can withstand the impact of intermittent cutting or gravity cutting. Area of force. In order to achieve this, the groove system of the guide rail system has various shapes. There are two representative types. One is called Gothic (pointed arch). The shape is an extension of a semicircle and the contact point is the vertex. The species is arc-shaped and can also play the same role. No matter which type of structure, the purpose is only one, and strive to make more rolling steel ball radius contact the guide rail (fixed element). The factors that determine the performance characteristics of the system are: how the rolling elements contact the guide rails, which is the key to the problem.

1. Linear guides are mainly used in automated machinery, such as machine tools, bending machines, laser welding machines imported from Germany, etc. Of course, linear guides and linear shafts are used in conjunction.
2. Linear guides are mainly used on mechanical structures with high accuracy requirements. The intermediate components are not used between the moving elements and fixed components of the linear guides, but rolling steel balls are used. Because the rolling steel ball is suitable for high-speed movement, low friction coefficient and high sensitivity, it can meet the working requirements of moving parts, such as the tool holder and carriage of the machine tool. If the force acting on the steel ball is too large, the steel ball is subjected to pre-loading for too long, resulting in an increase in the movement resistance of the stent.

Linear guide rails are precision parts, so they need to be quite cautious when using them. Even if high-performance linear guide rails are used, if they are used improperly, the expected performance results cannot be achieved, and the linear guide rails are easily damaged. Therefore, the following matters should be noted when using linear guides:

Prevent rust

When you take the linear guide directly with your hands, you should fully wash the sweat from your hands and apply high-quality mineral oil before operating. Pay special attention to rust prevention in the rainy season and summer.

Keep the environment clean

Keeping the linear guide rail and its surroundings clean Even if tiny dust that is invisible to the naked eye enters the guide rail, it will increase the wear, vibration and noise of the guide rail.

Install carefully

The linear guide rails must be used carefully during installation. Strong punching is not allowed. It is not allowed to directly hit the guide rails with a hammer. It is not allowed to transmit pressure through rolling elements.

Install the tools properly

Linear guides use suitable and accurate installation tools. Use special tools as much as possible, and try to avoid using cloths and short fibers.

Guide rails and linear shafts are one of the core components of the equipment, and their functions are to guide and support. In order to ensure the machine has a high processing accuracy, it is required that the guide rails and straight lines have high guiding accuracy and good motion stability. During the operation of the equipment, due to the large amount of corrosive dust and fumes produced by the workpiece during processing, these fumes and dust have been deposited on the surface of the guide rail and the linear axis for a long time, which has a great impact on the processing accuracy of the equipment and will Corrosion spots are formed on the surface of the linear axis of the guide rail, which shortens the service life of the equipment. In order to allow the machine to work normally and stably, and to ensure the processing quality of the product, daily maintenance of guide rails and linear axes must be carefully done. Note: Please prepare for cleaning the guide rails-dry cotton cloth, lubricating oil. The guide rail of the engraving machine is divided into linear guide rail and roller guide rail. Cleaning the linear guide: first move the laser head to the far right (or left), find the linear guide, wipe with a dry cotton cloth until it is bright and dust-free, and add a little lubricating oil (use sewing machine oil, do not use oil) , Slowly push the laser head to the left and right several times, so that the lubricant can be evenly distributed. Cleaning the roller guide rails: Move the beam to the inside, open the end covers on both sides of the machine, find the guide rails, wipe the areas where the rails on both sides contact the rollers with a dry cotton cloth, and then move the beam to clean the rest.

The sustained and rapid growth of China's economy has provided huge market space for linear guide products. The strong temptation of the Chinese market has made the world focus on the Chinese market. In the short decades of reform and opening up, China's linear guide manufacturing industry The huge production capacity formed has made the world look amazing. With the continuous expansion of China's electric power industry, data communication industry, urban rail transportation industry, automobile industry and shipbuilding industries, the demand for linear guides will also grow rapidly, and there is still huge potential for development in the future.