Gas flotation high-speed motorized spindle

Abstract

The invention relates to a gas flotation high-speed motorized spindle which comprises a shell body, a bearing mechanism, a cylinder mechanism and a rotor mechanism. The rotor mechanism comprises a shaft core, a rotor, a pull rod, a pull rod sensing nut, an elastic component and a pull claw component, the elastic component is composed of a plurality of spiral belleville springs sleeve the pull rod,the shell body is provided with a sensing mechanism which is provided with a plurality of proximity switches sequentially from top to bottom, and the proximity switches respectively sense different positions of the pull rod sensing nut. The gas flotation high-speed motorized spindle has the advantages that an air bearing of the gas flotation spindle is integrated, thereby being higher in processing accuracy, large in size and large in number of gas throttling holes, and the rotor is large enough in size, so that compared with conventional spindles, the gas flotation spindle has higher radialbearing capacity and rigidity; the spiral Belleville springs are used to form a shaft core of the rotor, so that elasticity is more stable, service life is longer, convenience is brought to demountingand mounting, and the spindle is enabled to have higher stability and high adaptability and practicability.

Description

technical field [0001] The invention relates to an electric spindle, in particular to an air-floating high-speed electric spindle with strong radial bearing capacity and easy installation and maintenance. Background technique [0002] In the existing technology, due to the limitation of the specifications of the body, the ordinary air-floating high-speed electric spindle has certain limitations in its processing power, bearing capacity, spindle stiffness, and spindle grasping method. Under the current production technology and processing conditions, the air-floating The shaft core is suspended by high-pressure gas, which can achieve a higher speed than the ball shaft, but it is also limited by this condition, so that its axial and radial bearing capacity, spindle stiffness, and processing power are all smaller than the ball shaft. With the individuation and diversification of the market and the diversification of product materials, higher requirements are put forward for pro...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, due to the limitation of the specifications of the body, the ordinary air-floating high-speed electric spindle has certain limitations in its processing power, bearing capacity, spindle stiffness, and spindle grasping method. Under the current production technology and processing conditions, the air-floating The shaft core is suspended by high-pressure gas, which can achieve a higher speed than the ball shaft, but it is also limited by this condition, so that its axial and radial bearing capacity, spindle stiffness, and processing power are all smaller than the ball shaft. With the individuation and diversification of the market and the diversification of product materials, higher requirements are put forward for processing efficiency, processing quality and processing methods, and the existing air bearing spindles are increasingly unable to meet the needs of the market.

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