TBI ball screw DFVR6310 working principle
1. High axial rigidity. High precision in reverse positioning. Ball screw pair can be pre-tensioned and eliminate clearance, so the axial rigidity is high, and there is no empty stroke (dead zone) when reversed, and the positioning accuracy is high.
2. Motion sensitive, no crawling at low speed. Because the static and dynamic friction coefficients are small, and the difference between them is small, the starting torque is small, the action is sensitive, and low-speed crawling does not occur.
3. Small friction loss and high transmission efficiency. The general transmission efficiency can reach 0.92-0.96. It is 3-4 times higher than the ordinary sliding screw pair. Therefore, the driving torque meter is 1/4 of the sliding screw pair.
4. The transmission is reversible and cannot be self-locking. Because the friction coefficient is small. It cannot be self-locking and the transmission is reversible. That is, it can not only convert rotary motion into linear motion, but also convert linear motion into rotary motion. Therefore, in some occasions, such as the transmission of vertical movement, it is necessary to add a braking device or an anti-reverse device to prevent the table from automatically lowering due to its own weight
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5, small wear, long life and simple maintenance.
6. The structure and technology are more complicated and the cost is higher.
From the characteristics of the above ball screw DFVR6310, it can be known that the ball screw pair is a screw pair with balls as rolling bodies between the screw and the nut, and it is a new device that converts rotary motion and linear motion into each other. Arc-shaped spiral grooves are machined on the screw and the nut, respectively. The two arcs are combined to form a spiral raceway, and balls are installed in the raceway. When the screw rotates relative to the nut, the ball rolls in the spiral raceway, forcing the two to move in the axial phase. To prevent the ball from rolling out of the nut, return guides are provided at both ends of the screw groove of the nut to make the ball A closed loop can be formed between the screw and nut. Since the friction between the screw and the nut is rolling friction, there is only sliding friction between the balls
The ball screw DFVR6310 provides a wide range of standardized products to suit various applications. It is widely used in machine tools, and the circulation methods of ball are circulating duct type, circulator type and end cap type. Preloading methods include positioning preloading (double nut method, bit preloading method) and constant pressure preloading.
Taiwan TBI high dust-proof screw DFVR6310, diameter 63mm, lead 10mm, the distance of symmetrical mounting holes of the nut is 130mm. In the case of extremely high temperature, a separate cooling system can be installed into the TBI ball screw, and the air Or spray oil mist on the screw shaft. Generally, air cooling is more effective and does not wear out like that.
