Super-high-speed electric main shaft sealing structure adopting water lubricating static pressure bearing

A technology of dynamic and static pressure bearings and high-speed electric spindles, which is applied to metal processing equipment, etc., can solve problems such as unreliable sealing and unsatisfactory sealing effects, and achieve the effects of reliable sealing, ingenious design, and reduced processing costs
CN102861927BInactive Publication Date: 2014-07-02XI AN JIAOTONG UNIV
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2014-07-02
Estimated Expiration
Not applicable Β· inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a super-high-speed electric main shaft sealing structure adopting a water lubricating static pressure bearing. The super-high-speed electric main shaft sealing structure comprises a sliding bearing which is sleeved on an electric main shaft which stretches out of a motor rotor, wherein the electric main shafts at the two ends of the sliding bearing are sleeved with front and back symmetrical gas sealing covers and are fastened with the two ends of the sliding bearing; the super-high-speed electric main shaft sealing structure is characterized in that the sliding bearing is internally provided with a gas inlet channel and a water discharging channel; an annular gas pressure sealing device, which is communicated with the outer part through the gas inlet channel, is arranged between each gas sealing cover and the electric main shaft; a gas blowing channel is formed by a gap between the gas sealing cover and the electric main shaft; annular multi-grade water returning grooves are symmetrically arranged at the axial two ends of the inner wall of the sliding bearing; and the annular multi-grade water returning grooves are communicated with the outer part through the water discharging channel.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention relates to a sealing device for a high-speed motor main shaft, in particular to a water-lubricated hydrodynamic and static pressure bearing sealing structure adopting a motor built-in electric main shaft. Background technique

[0002] The design and manufacturing level of high-speed CNC machine tools determines the level of my country's entire manufacturing industry, and the core component of modern high-speed CNC machine tools is the high-speed electric spindle device, whose performance directly affects the high-speed precision machining accuracy of the machine tool. The structure of the water-lubricated dynamic and static piezoelectric spindle with a built-in motor has the following advantages: first, the structure is compact, and the weight is reduced; second, the bearing is in a better condition, not easy to cause load bias, and has higher accuracy. The electric spindle makes a rotary motion under the support of the oil film of the water-l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More