Good installation quality is based on compliance with the screw jack installation design principles and installation steps, the following is the installation of linear slide rail should pay attention to the design matters and installation steps matters. Tighten the positioning screws of the slide rail from the center to both sides in order, so that the rail is mounted vertically.
The face is slightly fitted. The sequence of tightening from the center to the ends gives more stable accuracy.
After the vertical datum is slightly tightened, the locking force of the lateral datum is strengthened, so that the main rail can really fit the lateral datum. Linear bearings are mainly used in automated machinery more, of course, linear bearings and linear shaft is supporting the use of. Like linear guide is mainly used in the higher precision requirements of the mechanical structure.
The intermediate medium is not used between the moving element and the fixed element of the screw jack, but the rolling steel ball is used. Because the rolling steel ball is adapted to high-speed movement, small coefficient of friction, high sensitivity, to meet the working requirements of moving parts, such as machine tool tool holders, drag boards and so on. If the force acting on the steel ball is too large, the steel ball undergoes preload for too long, resulting in increased resistance to movement of the holder. Here there is a balancing act problem; in order to improve the sensitivity of the system, reduce the movement resistance, accordingly to reduce the preload, and in order to improve the movement accuracy and precision retention, the requirement for sufficient preload negative, which is the two sides of the contradiction. The design of the track system, and strive to have the largest contact area between the fixed elements and mobile elements, which not only improves the system's carrying capacity, and the system can withstand intermittent cutting or gravity cutting generated by the impact force, the force is widely spread, expanding the area of the bearing force. Synchronous belt pulley manufacturing process development is largely manifested in the accuracy level and improve production efficiency. Since the seventies a variety of synchronous belt pulley manufacturing accuracy, coupled with the improvement of tool materials, hobbing efficiency has improved significantly.
Enhancement of the tool holder and column rigidity and other new structures, the efficiency has improved significantly. The number of strokes of the new gear insertion machine can reach 2000 times / min. The development of low noise synchronous belt wheel device is synchronous belt wheel design features. In order to achieve the purpose of miniaturization of synchronous belt pulley device, you can improve the existing involute synchronous belt pulley bearing thrust. Countries generally use hardened tooth surface technology to improve the hardness to reduce the size of the device; can also be applied to the arc synchronous belt pulley as a representative of the extraordinary tooth shape. British and French cooperation in the development of shipboard helicopter main drive system using arc synchronous belt wheel, so that the height of the screw jack greatly reduced.