With the rapid development of the mechanical industry and the increasing demand for the environment. The use of oil air lubrication for high-speed spindle bearings not only improves the environment but also enhances the overall performance of the equipment, which is helpful for the upgrading and transformation of the equipment. Oil air lubrication can adapt to the lubrication mode of high-speed operation of electric spindles, not only ensuring reliable lubrication of bearings, but also suppressing the temperature rise of bearings. When applying oil air lubrication, we need to pay attention to the following issues:
1. Determination of oil supply quantity and oil supply cycle: To achieve high-speed operation of the electric spindle, providing appropriate oil supply to the bearings has become a very important indicator. The fuel consumption of bearing oil air lubrication needs to be calculated according to the bearing size parameters. The reasonable lubrication cycle for high-speed bearings is 3-10 minutes per time, and specific situations can refer to the recommended values of the bearing supplier. The main purpose of developing a good oil supply process is to ensure that bearings do not experience under lubrication or over lubrication.
2. Compressed air quality: In addition to the above-mentioned oil supply quantity and oil supply cycle, the quality of compressed air is a key factor for the good operation of the electric spindle. Compressed air is not only the power source for transporting lubricating oil, but also affects the operating life of bearings. Dust impurities and moisture in compressed air are serious factors that threaten the service life of bearings. Therefore, it is essential to equip the high-precision air source filtration and drying system for the oil air lubrication device of the electric spindle.
3. Daily maintenance management: When applying the oil and gas lubrication system, it is strictly prohibited to have leaks in the oil and gas transmission pipelines. If leaks occur, it will cause malfunctions in the transportation of lubricating oil. Therefore, in the operation and management of oil and gas lubrication systems, it is necessary to regularly check the condition of the pipelines and whether the oil flow is good. We also need to pay attention to the back pressure of the spindle lubrication channel and cavity. When the back pressure is too high, it will affect the speed of oil and gas transportation. When the back pressure is equal to the oil and gas pressure, the oil and gas will not flow, which will cause the lubricating oil to not reach the bearing position. Therefore, in daily inspection management, it is necessary to focus on whether the oil and gas flow is good. The selected oil and gas lubrication device should have oil and gas pressure detection and alarm functions, so as to issue fault alarms in case of bearing chamber back pressure rise, pipeline leakage and blockage, ensuring the good operation of the electric spindle.