It has good lubrication when working, which can slow down the wear, and most of them are lubricated by lubricating oil, and the lubricating oil needs to be filtered by an oil filter with appropriate accuracy, and the filtration degree is less than ten microns. The elastic parts require continuous lubrication, otherwise the temperature of the tooth surface will rise and accumulate water and dirt, which can withstand multiple loads, and its structure can be made into a variety of styles, and most of the smooth oil in the oil film will be separated.
Star elastic coupling
When the original oil film fails, a new oil film is formed, resulting in semi-dry friction or dry friction of the needle roller guide bearing and cross shaft. The cooling of the workpiece is usually cooled by liquid nitrogen and liquid oxygen, and can be cooled by dry ice and cryogenic box, in which the low cooling temperature of liquid nitrogen can reach minus 195 degrees Celsius, and the low cooling temperature of liquid oxygen can reach minus 180 degrees Celsius, which is suitable for the cooling of connectors with large interference.
The heating temperature and time of the workpiece should be controlled during hot charging, and the holding time should be appropriately longer when the size of the workpiece is large. The structure of the guard must have sufficient rigidity, and when bearing static load, the deflection guard is not supported by the length, and the guard of the coupling that needs to be lubricated should be sealed. The positioning taper plays a role in the positioning of the bolt of the column pin, so the fitting part of the taper hole should be checked very carefully.
Roller couplings.
The star elastic coupling needs to consider the compensation of axial size error, the material of the two halves of the coupling and the strength of the heat treatment form. The matching surface of the star-shaped elastic coupling should be punctured, abrasion and other defects, and the temperature rise and current values should be recorded frequently, and the temperature rise should not exceed 30 degrees Celsius per hour. After the temperature rises to 100 degrees Celsius, the raiders should pay attention to safety, and the spindle servo motor of the CNC lathe.