Oil-mist-free and high-speed electric spindle
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Abstract
An oil-mist-free and high-speed electric spindle is provided by the present invention, which is capable of avoiding an environmental pollution caused by oil mist, avoiding harming the physical health of an employee, and saving energy. The oil-mist-free and high-speed electric spindle of the present invention includes a shell, a stator and a rotator. Using a bearing provided on a bearing providing position of the shell, the stator and the rotor are separated by a gap and freely rotatably supported on the shell. A labyrinth sealing structure, which covers the bearing providing position, is provided on an outside of the bearing providing position. The labyrinth sealing structure has a channel which opens to an atmosphere. And a through-hole is provided on the shell, wherein one end of the through-hole opens to the shelter, and the other end of the through-hole is connected with the channel of the labyrinth sealing structure. And the bearing providing position is filled with a lubricating grease which is a total synthesis grease of polyurea that is mainly composed of a base oil and contains a nanometer anti-wear additive. Popularizing the electric spindle of the present invention is expected to save approximately 3 billion kilowatt-hours of electricity and over 60 thousand tons of high quality lubricating grease per year.
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Citations
30 Claims
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1-10. -10. (canceled)
- 11. An oil-mist-free and high-speed electric spindle, comprising a shell, a stator and a rotor, wherein said stator and said rotor are received by a shelter which is formed by an inner surface of said shell, wherein by using a bearing provided on a bearing providing position of said shell, said stator and said rotor are separated by a gap and freely rotatably supported on said shell, wherein a labyrinth sealing structure, which covers said bearing providing position, is provided on an outside of said bearing providing position, wherein said labyrinth sealing structure has a channel which opens to an atmosphere, wherein a through-hole is provided on said shell, one end of said through-hole opens to said shelter, and the other end of said through-hole is connected with said channel of said labyrinth sealing structure, wherein, preferably, said bearing providing position is filled with a lubricating grease which is a total synthesis grease of polyurea that is mainly composed of a base oil and contains a nanometer anti-wear additive.
Specification