The small CNC vertical lathe spindle is designed according to the different manufacturers, and it is nothing more than a set of bearings at the front and rear. Of course, this set of bearings will vary in size, and it is also composed of several different models. The models are different, but the bearings are used. The principle of supporting the main shaft and the main body to reduce the friction between each other is the same.
Even if the friction of the bearing is very small when the spindle rotates, the fine friction will still generate temperature, and the temperature will increase with the increase of the speed and the extension of the rotation time. The heat generated by the bearing will also be transmitted to the spindle itself. The temperature rise of the spindle.
The design of each machine factory is different. There is liquid lubrication for the spindle bearings, high-speed butter solid lubrication from small CNC vertical lathes, and air or water supply to the external body to cool down through the circuit. The spindle temperature rises to a balance. The point is the most stable. The temperature is different in the design of each machine factory. Therefore, the small CNC vertical lathe machine must be warmed up for a period of time after the machine is turned on, so that the machine is stable and then the CNC vertical lathe works. Including linear slides, balls The bearing has a temperature rise phenomenon.