Ball screws have many distinguishing features. It has high-precision transmission capabilities and can achieve extremely fine and precise displacements, which makes it an indispensable key component in high-end equipment such as precision instruments and CNC machine tools. At the same time, its transmission efficiency is high, and it can transmit power more effectively than some other transmission methods. In addition, the ball screw also has good rigidity and stability, and can withstand larger loads and maintain stable operation.
FAQ about ball screws
1. Wear: Long-term use causes wear of the screw, nut and ball, affecting transmission accuracy and efficiency.
2. Stuck: The ball or screw may be stuck due to impurities entering, poor lubrication, etc.
3. The return error increases: that is, a large deviation occurs during reverse movement, which is usually caused by factors such as wear and tear.
4. Abnormal noise: If abnormal noise occurs, it may be caused by damaged parts or poor coordination.
5. Bending and deformation of the screw: Excessive load or impact may cause the screw to deform, affecting normal operation.
6. Seal failure: Dust, debris, etc. can easily enter the inside of the screw, causing a series of problems.
7. Lubrication system failure: such as insufficient oil supply, blocked oil circuit, etc., resulting in poor lubrication.
Ball screw maintenance
Precautions
1. Keep the screw clean. Clean the dust and debris on the surface of the screw regularly to prevent them from entering the screw and affecting the operation.
2. Ensure good lubrication. According to the usage, add appropriate lubricating oil or grease at the prescribed time interval to make the ball roll smoothly on the screw and reduce wear.
3. Avoid excessive load. Do not let the screw bear a load beyond its carrying capacity to prevent the screw from deformation or damage.
4. Ensure accuracy during installation and use. Avoid damage to the screw or loss of accuracy due to incorrect installation or operation.
5. Check the operating status of the screw regularly, including abnormal noise, vibration, etc. If any problems are found, repair or replace the damaged parts in time.
6. Pay attention to environmental factors to avoid long-term operation of the screw in harsh environments, such as high temperature, high humidity, corrosive environment, etc., and take protective measures if necessary.
7. The components that cooperate with the screw should also be maintained to ensure the good operation of the entire transmission system.
8. When the lead screw is not used for a long time, it should also be protected and maintained to prevent rust and other situations.
Tips
1. Appearance inspection: carefully check whether there are scratches, rust, bumps and damage on the surface of the lead screw.
2. Lubrication condition inspection: observe whether the distribution of lubricating oil or grease is even and whether there is oil shortage. If the color of the lubricant turns black or the viscosity decreases, it may indicate that the lubricant has aged or worn and needs to be replaced with a new lubricant.
3. Movement smoothness inspection: manually turn the lead screw or drive it to move, and feel whether there is a jam or unsmoothness.
4. Noise inspection: listen for abnormal noise during operation, which may indicate a fault. If you hear abnormal noise during work, such as hissing or friction sounds from the bearing, it may be a sign of poor lubrication, and you need to check the lubrication immediately.
5. Accuracy inspection: Use special detection tools or compare with standard parts to check whether the positioning accuracy and repeatability of the lead screw have changed.
6. Clearance inspection: Check whether there is an abnormal gap between the lead screw nut.
7. Check the connection parts: Check the parts connected to the screw, such as the bearing seat, coupling, etc., to ensure that the connection is tight and not loose. Official account "Mechanical Engineering Collection", the gas station for engineers!
8. Temperature check: Touch it with your hand or use a temperature measuring instrument to check whether the temperature of the screw rises abnormally after operation. If the temperature of the bearing is too high during operation, it may be caused by insufficient lubrication. You need to increase the amount of lubricant or replace the lubricant.
9. Cleanliness check: Check whether there is too much dust, debris, etc. accumulated around the screw.
10. Thread check: Check whether the thread of the screw is complete and damaged.
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