Since its development, ball screws have been widely used in the positioning accuracy control of various industrial machinery, such as precision machine tools, industrial machinery, electronic machinery, and transport machinery. As an important mechanical accessory, when the ball screw is running, the temperature rise will affect the accuracy of the mechanical transmission system, especially high-speed and high-precision machinery. How can we prevent overheating? Next, we will introduce how to prevent the ball screw from overheating during operation.
1. Reduce the preload: Under the premise of meeting the product requirements, reduce the preload of the ball screw and the bearing seat as much as possible. Excessive preload will not only increase friction, but also cause heat generation, which will cause the temperature of the ball screw to rise.
2. Choose a suitable lead: Try to reduce the speed of the ball screw by selecting a large lead. During machine tool processing, avoid the ball screw being in a high-speed and high-frequency state for a long time, appropriately reduce its rotation speed, and reduce the temperature rise.
3. Choose a suitable lubricant: Choose a lubricant according to the working environment of the ball screw. If there is a lot of dust or impurities in the working environment, a lubricant with good anti-pollution performance should be selected; in a high-temperature environment, a high-temperature resistant lubricant, such as synthetic oil, should be used.
4. Ensure adequate lubrication: For ball screws lubricated with grease, grease should be added regularly. Generally speaking, according to the working intensity of the ball screw, grease needs to be added to the inside of the nut of the ball screw through the grease nozzle every certain working time or running mileage.
5. Reasonable planning of workload: When designing a mechanical system, the load borne by the ball screw should be accurately calculated. For application scenarios with impact loads, such as stamping equipment, a buffer device can be installed. The buffer device can absorb impact energy and reduce the instantaneous impact force on the ball screw, thereby reducing the heat generated by the impact.
6. Control the running speed: According to the specifications of the ball screw, its running speed should be reasonably set. In some equipment that requires frequent start and stop or speed change, such as automatic assembly production lines, appropriate acceleration and deceleration control strategies should be adopted.
It should be noted that if the ball screw is seriously overheated, it is recommended to stop using it immediately and check the situation. If it needs to be replaced, please replace it in time to avoid more serious failures.
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