High-speed water lubrication dynamic pressure spiral groove bearing electric spindle
A spiral groove and water-lubricated technology, which is applied in the direction of large fixed members, metal processing machinery parts, maintenance and safety accessories, etc., can solve the problem that it is difficult to form a dynamic pressure water film on the bearing, it is not suitable for high-speed precision electric spindle, and the service life of the bearing is shortened, etc. problems, achieve good static and dynamic characteristics, significant dynamic pressure effect, and reduce viscous resistance
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[0032] A high-speed water-lubricated dynamic pressure spiral groove bearing electrical spindle of the present invention includes a housing 7, a dynamic pressure spiral groove radial bearing and a thrust bearing arranged in the housing 7, and a radial-thrust bearing combined support The main shaft 1, the non-contact front and rear gas injection sealing rings arranged at the end of the bearing, the motor rotor 15 installed with the conical surface of the main shaft 1, the cooling water jacket 13 arranged outside the motor stator 14, and peripheral equipment. Both the dynamic pressure spiral groove radial bearing and the thrust bearing use water as lubricant, and the peripheral equipment includes frequency converter, air supply system and cooling water supply system, etc.
[0033]The main shaft 1 is jointly supported by a dynamic pressure spiral groove radial-thrust bearing. Among them, the dynamic pressure spiral groove radial bearing includes a front radial bearing and a rear r...
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