Disc Type Special Machine equipped with multi-station cutter tower or power cutter tower, the machine has a wide range of processing performance, can process linear cylinder, oblique cylinder, arc and a variety of threads, slots, worm and other complex workpieces, with linear interpolation, arc interpolation of various compensation functions. And in the mass production of complex parts has played a good economic effect.
The purpose of setting the guide bearing of CNC lathe is to limit the generator spindle to operate and bear the radial load on the generator spindle only within the specified clearance range of the guide bearing. Due to the high temperature of the guide bearing of the CNC lathe, the phenomenon of burning tile is a common fault problem, the following CNC talk about how to deal with the Disc Type Special Machine bearing temperature is too high.
Disc Type Special Machine
According to the operation observation and maintenance analysis, we believe that there are two main reasons for the increase in bearing temperature and the increase in unit vibration:
1, the bearing clearance increases, much more than the design requirements of the clearance, resulting in lubricating oil into the water guide bearing tile surface is not easy to form oil wedge, resulting in poor lubrication and lead to guide bearing temperature rise and vibration increase of the unit phenomenon;
2. The contact point of the bearing tile surface is less and the contact surface is insufficient, which can not meet the requirements of the equipment specification.
Guide bearing temperature rise solution:
According to the design requirements of the manufacturer, when the cooling water temperature of the Disc Type Special Machine does not exceed 25 ° C under continuous operation, the temperature of the tile temperature and the oil temperature should not exceed 65 ° C. The temperature of the tile and the temperature of the oil are not only related to the temperature of the cooling water, but also to the circulation of the lubricating oil and the clearance between the bearing shell and the spindle journal.
The allowable clearance of the Disc Type Special Machine guide bearing is 0.2 ~ 0.3mm(bilateral clearance). The lower part of the bearing shingle is immersed in lubricating oil. When the spindle is running clockwise, the lubricating oil is easy to enter the tile surface of the guide bearing and produce an oil wedge to lubricate the tile surface. Due to the short distance, good lubrication condition, less heat generated by friction, and good cooling effect, it generally does not lead to the phenomenon of rising bearing temperature, but also does not lead to the phenomenon of burning tile.
Disc Type Special Machine https://www.zjshuangzheng.com/Disc-Type-Special-Machine.html
