JPS5770276A - Preparation of dynanic pressure generating groove by mask etching - Google Patents

Preparation of dynanic pressure generating groove by mask etching

Info

Publication number
JPS5770276A
JPS5770276A JP14440880A JP14440880A JPS5770276A JP S5770276 A JPS5770276 A JP S5770276A JP 14440880 A JP14440880 A JP 14440880A JP 14440880 A JP14440880 A JP 14440880A JP S5770276 A JPS5770276 A JP S5770276A
Authority
JP
Japan
Prior art keywords
groove
bearing surface
flowed
etching liquid
recessed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14440880A
Other languages
Japanese (ja)
Inventor
Kyosaburo Furumura
Hiromi Sugi
Hiromitsu Asai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP14440880A priority Critical patent/JPS5770276A/en
Publication of JPS5770276A publication Critical patent/JPS5770276A/en
Pending legal-status Critical Current

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  • ing And Chemical Polishing (AREA)

Abstract

PURPOSE: To prepare the titled groove with preciseness to a bearing surface at a low cost by a method wherin a mask material equipped with a recessed groove with a desired shape comprising a corrosion resistance elastic member is closely contacted to the bearing surface and an etching liquid is flowed into said recessed groove.
CONSTITUTION: A mask material 5 is contacted with a spherical surfaced receiving member 11 and lightly pressed to closely contact a bearing surface 2 and an upper end surface 21 and a surface part 51 and a flat surface part 54. Next, when an etching liquid such as an aqueous nitric acid solution is flowed in from an inflow port 8, the etching liquid is flowed into recessed grooves 7 formed in a spiral form at plural places from a ring like groove 71 and passed through a fine pore 72 and a discharge pore 81 and discharged to the outside. If this condition is held for adesired time, a surface a metal part opposed to the recessed groove 7 of the bearing surface 2 is subjected etching processing and a desired spiral groove is formed.A herring bone groove is also formed by a quitely same method.
COPYRIGHT: (C)1982,JPO&Japio
JP14440880A 1980-10-17 1980-10-17 Preparation of dynanic pressure generating groove by mask etching Pending JPS5770276A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14440880A JPS5770276A (en) 1980-10-17 1980-10-17 Preparation of dynanic pressure generating groove by mask etching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14440880A JPS5770276A (en) 1980-10-17 1980-10-17 Preparation of dynanic pressure generating groove by mask etching

Publications (1)

Publication Number Publication Date
JPS5770276A true JPS5770276A (en) 1982-04-30

Family

ID=15361472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14440880A Pending JPS5770276A (en) 1980-10-17 1980-10-17 Preparation of dynanic pressure generating groove by mask etching

Country Status (1)

Country Link
JP (1) JPS5770276A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7507039B2 (en) 2002-02-28 2009-03-24 Fujitsu Limited Dynamic pressure bearing manufacturing method, dynamic pressure bearing and dynamic pressure bearing manufacturing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7507039B2 (en) 2002-02-28 2009-03-24 Fujitsu Limited Dynamic pressure bearing manufacturing method, dynamic pressure bearing and dynamic pressure bearing manufacturing device

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