JPS6061517U

JPS6061517U - Axial air supply type static pressure gas bearing device

Info

Publication number: JPS6061517U
Application number: JP15464983U
Authority: JP
Inventors: 紀男伊藤; 橋本　正義; 山崎　静; 憲市岩本; 芳夫藤川
Original assignee: エヌ・テー・エヌ東洋ベアリング株式会社
Priority date: 1983-10-04
Filing date: 1983-10-04
Publication date: 1985-04-30
Also published as: JPS6311390Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の軸給気式静圧気体軸受装置の軸方向断面
図、第２図は第１図の■部拡大図、第３図はこの発明の
実施例たる軸給気静圧気体軸受の軸方向断面図、第４図
は第３図の■部拡大図、第５図は第３図の■−■線に沿
う軸の断面図、第６図は第３図のＶｌ、−Ｖｌ線に沿う
軸の断面図である。１１・・・・・・ハウジング、１２・・・・・・軸、１
６，１７・・・・・・ラジアル軸受部、１８・・・・・
・軸部分、１９・・・・・・スラスト板、２０・・・・
・・給気孔、２１・・・・・・供給口、２２・・・・・
・環状溝、２３，３２・・・・・・軸方向溝、２４．３
４・・・・・・畝部、２５・・・・・・軸受すきま、２
６゜３３・・・・・・半径方向孔、２７．２８・・・・
・・スラスト板の受面、２９・・・・・・ノズル、３０
．３１・・・・・・ハウジングの受面。？　　　　　　　　第１図第２図Fig. 1 is an axial cross-sectional view of a conventional axially-supplied static pressure gas bearing device, Fig. 2 is an enlarged view of the section ■ in Fig. 1, and Fig. 3 is an axially-supplied static-pressure gas bearing device according to an embodiment of the present invention. An axial cross-sectional view of the bearing, FIG. 4 is an enlarged view of the part ■ in FIG. 3, FIG. 5 is a cross-sectional view of the shaft along the line ■--■ in FIG. 3, and FIG. FIG. 2 is a cross-sectional view of the axis along the Vl line. 11...Housing, 12...Shaft, 1
6, 17... Radial bearing section, 18...
・Shaft part, 19... Thrust plate, 20...
... Air supply hole, 21 ... Supply port, 22 ...
・Annular groove, 23, 32...Axial groove, 24.3
4...Ridge, 25...Bearing clearance, 2
6゜33...Radial hole, 27.28...
... Thrust plate receiving surface, 29 ... Nozzle, 30
．． 31... Housing receiving surface. ? Figure 1 Figure 2

Claims

[Scope of utility model registration request]

The housing includes a housing having a pressurized gas supply port, a shaft portion having first and second radial bearing portions spaced apart from each other in the axial direction, and a thrust plate formed at one end of the shaft portion, and having an air supply hole therein. an annular groove in which the first radial bearing portion communicates with the supply port; a radial hole in which the annular groove communicates with the air supply hole; The second radial bearing portion has a plurality of axial grooves that communicate with the annular groove, and the second radial bearing portion includes a plurality of axial grooves that are arranged in the circumferential direction, and a radial hole that communicates each axial groove with the air supply hole. In the first and second radial bearing portions, the ridge between the axial grooves and the receiving surface of the housing constitute a surface aperture, and the thrust plate extends both axial side surfaces of the housing. What is claimed is: 1. A shaft air supply type static pressure gas bearing device having a receiving surface facing the receiving surface, and a nozzle that communicates with the air supply hole and opens at the receiving surface of the thrust plate.