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High speed high rigidity composite multibase gas static pressure bearing electric main shaft

A gas static pressure, high stiffness technology, applied in the field of machinery, can solve the problems of low bearing capacity and stiffness, high process difficulty, large gas consumption, etc., to achieve product cost reduction, reduce spindle deformation, reduce bearing capacity, and reduce gas consumption Effect

Inactive Publication Date: 2008-06-25
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-speed, high-rigidity composite multi-support gas static pressure bearing electric spindle structural design to solve the technical problem of low load-carrying capacity and rigidity of the electric spindle supported by the gas static pressure bearing of the traditional structure, and at the same time It can overcome the disadvantages of large air consumption, high process difficulty and high cost of the electric spindle with fully supported static pressure gas bearing

Method used

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  • High speed high rigidity composite multibase gas static pressure bearing electric main shaft
  • High speed high rigidity composite multibase gas static pressure bearing electric main shaft
  • High speed high rigidity composite multibase gas static pressure bearing electric main shaft

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Embodiment Construction

[0029] The structure diagram of the present invention is as figure 1 As shown, the front end cover 1 is used to prevent the iron filings and coolant generated during processing from entering the inside of the outer sleeve 5, the thrust bearing 2 and the front bearing 4 play the bearing role, and the thrust of the thrust bearing 2 and the front bearing 4 The air film gap of the bearing is determined by the axial dimension difference between the positioning ring 3 and the main shaft shoulder. Such as Figure 1 As shown, the front end cover 1, the positioning ring 3, the front bearing 4, the middle bearing 7, the motor stator 8, the motor stator water jacket 9, the rear bearing 11 and the rear end cover 12 are installed on the main shaft outer sleeve 5, and the main shaft 6 is fixed by The push bearing 2, the front bearing 4, the middle bearing 7 and the rear bearing 11 are jointly supported. The thrust bearing 2, the front bearing 4, the middle bearing 7 and the rear bearing 1...

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Abstract

A high-speed and -rigidity multi-supporter electric mainshaft with static-pressure gas bearing is composed of front, middle and rear bearings, mainshaft supported by said three bearings, and a motor module installed to middle position between middle and rear bearings and consisting of stator, water jacket of stator and rotor. Its advantages are high speed, rigidity, power, rotational precision and load-bearing power, and long service life.

Description

technical field [0001] The invention belongs to the machine tool technology in the mechanical field, and is a high-speed and high-rigidity electric spindle technology applicable to high-speed precision turning / milling / grinding machine tools, and specifically relates to a high-speed and high-rigidity composite multi-support gas static pressure bearing electric spindle. Background technique [0002] The high-speed electric spindle is the core component of the high-speed machine tool. The bearings used in the high-speed electric spindle mainly include rolling bearings, magnetic suspension bearings and gas static pressure bearings. The rolling bearing motorized spindle has simple structure, good rigidity, and high standardization, but it wears quickly when running at high speed, and the precision life and practical life are short (generally, the bearing needs to be replaced in about three months) and the vibration and noise are large. The magnetic suspension bearing electric spi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q5/10B23B19/02F16C32/06
Inventor 马平李劼科李锻能
Owner GUANGDONG UNIV OF TECH