CNC rotary table and swing head are the key components of multi-coordinate CNC machine tools, and they are very important components. The traditional high-precision worm and worm gear-driven turntables and swing heads are not only difficult to manufacture and costly, but also difficult to achieve the speed and accuracy required for high-speed processing. Therefore, in order to realize the zero drive of the rotary motion coordinates of CNC machine tools and accelerate the development of my country's high-speed, high-precision multi-coordinate CNC machine tools, it is necessary to find another way to develop a new type of CNC turntable and swing head electromagnetic drive system. In order to ensure the machining quality and sufficient machining accuracy of the CNC turntable system when it is disturbed by the cutting force, the high response advantage of the direct drive should be fully utilized to ensure the stability of the system and increase the rigidity of the system
The CNC turntable is a machine tool accessory that clamps the product workpiece on the chuck or between the two to make it rotate, index and position. When operating the NC turntable in rapid traverse or jog mode, the NC turntable can only be rotated after pressing "+4" or "-4". After rotating, the CNC turntable will automatically switch to clamping mode. The CNC turntable is a machine tool accessory that clamps the product workpiece on the chuck or between the two to make it rotate, index and position. CNC turntables are mainly used in CNC lathes, but also in planers and tool grinders. It can also be placed on the platform so that the assembler can mark it. Introduced the process performance analysis of CNC turntable parts
Cross roller bearings: Cross roller bearings are also widely used in turntables. The characteristic of the cross roller bearing is that there are two raceways and two rows of cross-arranged rollers in the bearing. Compared with the traditional thrust bearing + radial centering bearing combination, the cross roller bearing has a compact structure and a small volume, which simplifies the design of the worktable and reduces the cost of the turntable. Hydrostatic bearing + precision cylindrical roller bearing: Hydrostatic bearing is a kind of sliding bearing, relying on the supply of external pressure oil to establish a hydrostatic bearing oil film in the bearing to achieve liquid lubrication. Hydrostatic bearings always work under liquid lubrication. From start to stop, there is no wear, long service life, and low starting power. In addition, the turntable bearing also has the advantages of high rotation accuracy, high oil film rigidity, and suppression of oil film oscillation. Precision cylindrical roller bearings have good radial load carrying capacity. Due to the use of precision bearings, the rotation accuracy of the turntable can also be well guaranteed.
