Self-sourced high-precision air-floating grinding head drive shaft and gas circulation system containing the same

By using a self-source high-precision air-floating head drive shaft and gas circulation system in the electric spindle, the vibration, noise and energy caused by contact bearings are solved by using motor support and nanoporous carbon bearings, combined with the turbocharger system. The consumption problem improves spindle stability and bearing quality, and realizes the recycling of the air source and the extension of the filter life.

CN116810624BActive Publication Date: 2024-12-10HANGZHOU HAIBEI MASCH CO LTD
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Patent Information

Application Number
CN202211011519.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-23
Publication Date
2024-12-10
Estimated Expiration
2042-08-23

AI Technical Summary

Technical Problem

The use of contact bearings of existing electric spindles leads to vibration, noise, heating, pollution of the environment, increased energy consumption and short service life. The lack of gas sources leads to a large amount of use of external gases in the turbocharger system, shortening the filter life, and poor bearing rigidity. and insufficient axial load-bearing capacity.

Method used

A self-source high-precision air-floating grinding head drive shaft is designed, using a gas circulation system, using a motor in the cylinder to support the spindle, and using a nanoporous carbon material air-floating bearing and turbocharger system to realize self-source gas pressure supply , improve bearing rigidity and gas source stability, and reduce dependence on external gases through turbocharged systems.

Benefits of technology

Effectively solve the vibration, noise, heating and energy consumption problems caused by contact bearings, improve spindle stability and bearing quality, extend filter life, and realize self-repair of bearings and gas source recycling, reducing external Gas dependence.

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    Figure CN116810624B_ABST
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Abstract

The present application discloses a self-sourced high-precision air-floating grinding head drive shaft and a gas circulation system containing the same. The drive shaft includes a cylinder, a main shaft is arranged at the central axis position inside the cylinder, a motor is arranged at the middle position inside the cylinder, the middle part of the main shaft is fixedly connected to the motor, a front bearing seat is arranged at one end inside the cylinder, a rear bearing seat is arranged at the end inside the cylinder away from the front bearing seat, a first air-floating bearing is arranged inside the front bearing seat, a second air-floating bearing is arranged inside the rear bearing seat, the main shaft is fixedly connected to the first air-floating bearing and the second air-floating bearing, and an output device is arranged at the end of the main shaft away from the rear bearing seat. The embodiments of the present application effectively solve the problems of vibration, noise, heat, environmental pollution, increased energy consumption, short service life, etc. caused by using contact bearings to support the main shaft, so that the stability of the main shaft is significantly improved and the quality of the processed bearings is effectively guaranteed.
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Citation Information

Patent Citations

  • Gas-self-supplying gas bearing supporting motorized spindle

    CN103121112A

  • Hydrostatic bearing and method for improving bearing capacity of hydrostatic bearing

    CN105805160A

  • Gas static pressure spindle based on acoustic levitation and variable throttling

    CN112963449A

  • Air floating bearing and high-pressure air floating motorized spindle supported by air floating bearing

    CN114273685A

  • Ultrahigh-speed static-pressure electric spindle

    CN215281178U