Based on the characteristics of machine tools in different application fields, TBI linear guide rail The development trends of the international machine tool market have been identified. Several new linear guide products have already been developed, driving the machine tool industry toward high speed, high precision, environmental friendliness, and energy efficiency. The TBI linear guide is a novel type of rolling bearing designed for relatively reciprocating linear motion. It typically consists of a guide rail, a slider, an inverter, rolling elements, and a permanent magnet mechanism. This guide replaces the direct sliding contact between steel ball sliders, guide rails, and rolling elements. It enables infinite-cycle grooves and the assistance of the slider. It boasts advantages such as simple structure, low dynamic and static friction coefficients, high positioning accuracy, and excellent durability.

　　To precisely control the parallelism of the worktable during reciprocating motion, linear guides—also known as precision rolling linear guides, guide pairs, linear rails, linear bearings, and rolling guides—are used. These guides offer a higher rated load capacity than linear bearings and can withstand certain levels of torque. They enable highly accurate linear motion even under heavy loads. By relying on two or four ball columns positioned on either side of the guide rail, the worktable is driven to move smoothly in a specified direction, allowing it to perform reciprocating linear motion. Linear rolling guides are employed to support and guide moving components. Linear motion guides can be categorized into sliding-friction guides, rolling-friction guides, elastic-friction guides, fluid-friction guides, and others, depending on the nature of the friction involved.

　　I. Precision Adjustment of Linear Rolling Guides

　　1. Extra-long linear guide rail

　　Linear rolling guides are widely used in various machine tools and non-standard equipment. Typically, since the machined surface serves as the mounting reference and the application length is relatively short, their adjustment and measurement are relatively straightforward. However, for ultra-long guides (exceeding 8 meters), adjustment and measurement become a challenge.

　　2. Guide rail installation structure and precision requirements

　　The horizontal guide rails of the near-field testing equipment are divided into a front rail and a rear rail, with a total length of 13 meters and a span of 1.5 meters. They serve as an extremely important foundation and reference for the equipment’s precision. The main guide rail plays a dominant role, while the auxiliary guide rail provides supplementary support.

　　3. During the adjustment of the spindle’s horizontal straightness,

　　Since the guide rail is assembled from 13 precision guide rails, each 1 meter long, we have divided the assembly and adjustment process into two steps—rough rail adjustment and precision rail adjustment—to facilitate these tasks.

　　II. How to properly install TBI linear guides?

　　1. Before installing the TBI linear guide rail, clean the mechanical mounting surface to remove burrs, dirt, and surface scratches. Prior to formal installation, apply anti-rust oil to the linear guide rail. Before installation, clean the reference surface with a clean oil and then proceed with installation. Generally, after the reference surface has been cleaned, it becomes more prone to rusting; therefore, we recommend using a spindle lubricant with lower viscosity.

　　2. Gently place the main rail of the linear guide onto the bedplate, and lightly secure it to the linear guide using horizontal fixing screws or other appropriate fastening devices. Before installation and use, confirm that the screw holes are properly closed. If the machining holes in the base are not fully closed, forcibly tightening the bolts will significantly compromise assembly accuracy and operational quality.

　　3. Slightly tighten the fixing screws of the slide rail from the distal end toward the proximal end, so that the slide rail slightly conforms to the vertically mounted surface. After slightly tightening the vertical reference surface, further increase the clamping force on the horizontal reference surface to ensure that the main rail is truly flush with the horizontal reference surface.

　　4. Based on the tightening torque specified for each material, slowly tighten the fixing screws of the slide rail using a torque wrench. When installing the slide rail, select the appropriate locking torque according to the platform material and the type of fixing screw. Slowly tighten the guide rail bolts using a torque wrench.