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JPS5779313A - Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member - Google Patents

Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member

Info

Publication number
JPS5779313A
JPS5779313A JP15517780A JP15517780A JPS5779313A JP S5779313 A JPS5779313 A JP S5779313A JP 15517780 A JP15517780 A JP 15517780A JP 15517780 A JP15517780 A JP 15517780A JP S5779313 A JPS5779313 A JP S5779313A
Authority
JP
Japan
Prior art keywords
shaft member
dynamic pressure
shaft
workpiece
bearing surfaces
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
JP15517780A
Other languages
Japanese (ja)
Inventor
Katsuhiko Tanaka
Masaru Tamaki
Shuichi Ishikawa
Takanobu Sato
Kiyoshi Haginuma
Ikunori Sakatani
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 JP15517780A priority Critical patent/JPS5779313A/en
Publication of JPS5779313A publication Critical patent/JPS5779313A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

PURPOSE: To make dynamic pressure causing grooves on a shaft member with high accuracy, by effecting rolling between an axially flat support roll located at one side and a cutting roll located at the other side.
CONSTITUTION: A shaft member 1, which is used for the spindle of an acoustic appliance or the like, is provided with shaft-side bearing surfaces 11 having dynamic pressure causing herringbone grooves 3. These bearing surfaces 11 cooperate with the inside circumferential surfaces 21a, 21b of an outer cylindrical member 2 to constitute radial bearings. To manufacture the shaft member 1, a material piece is finished of its outside diameter and both its end faces by turning etc. to obtain a workpiece 13. After one end of the workpiece 13 is quenched by high-frequency waves, roling work is effected by a rolling unit 9 to make the herringbone grooves 3 on the sections of the workpiece 13 corresponding to the shaft-side bearing surfaces 11. The rolling unit 9 comprises a support roll 92 which has a flat surface and rotates in a fixed position and a cutting roll 91 which has cutting protrusions 94 on the peripheral surface and can move back and forth.
COPYRIGHT: (C)1982,JPO&Japio
JP15517780A 1980-11-06 1980-11-06 Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member Pending JPS5779313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15517780A JPS5779313A (en) 1980-11-06 1980-11-06 Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15517780A JPS5779313A (en) 1980-11-06 1980-11-06 Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member

Publications (1)

Publication Number Publication Date
JPS5779313A true JPS5779313A (en) 1982-05-18

Family

ID=15600171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15517780A Pending JPS5779313A (en) 1980-11-06 1980-11-06 Shaft member for rotary spindle with dynamic pressure grooves and method of manufacturing said member

Country Status (1)

Country Link
JP (1) JPS5779313A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4429081Y1 (en) * 1966-04-27 1969-12-02
JPS5113742A (en) * 1974-07-23 1976-02-03 Matsushita Electric Ind Co Ltd AZOKISHIBENZEN JUDOTAINO SEIZOHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4429081Y1 (en) * 1966-04-27 1969-12-02
JPS5113742A (en) * 1974-07-23 1976-02-03 Matsushita Electric Ind Co Ltd AZOKISHIBENZEN JUDOTAINO SEIZOHOHO

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