METHOD FOR MANUFACTURING OUTER RING OF ROLLING BEARING UNIT FOR SUPPORTING WHEEL

Title:

METHOD FOR MANUFACTURING OUTER RING OF ROLLING BEARING UNIT FOR SUPPORTING WHEEL

Document Type and Number:

Japanese Patent JP2014057999

Kind Code:

A

Abstract:

To provide a method for manufacturing an outer ring comprising an undercut section where an inner diameter is larger than that of both sides of a section in an axial direction, at an intermediate section in the axial direction at a low cost.

Firstly, by executing plastic working of metallic material 10 in processes of (A) → (B) → (C) → (D) → (E), intermediate material 19, without comprising a small diameter section or an undercut section and comprising sections for serving as the small diameter section and the undercut section and formed as cylindrical parts, is formed. Thereafter, a diameter of a part of the cylindrical parts 18 is reduced by the plastic working in processes (E) → (F) → (G), and final intermediate material 9 comprising the small diameter section and the undercut section is formed.

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Inventors:

KOBAYASHI KAZUTO
KOYAMA HIROSHI
MIZUSHIMA YUUKI

Application Number:

JP2013244797A

Publication Date:

April 03, 2014

Filing Date:

November 27, 2013

Export Citation:

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Assignee:

NSK LTD

International Classes:

B21K1/05; B21J5/08; B21J5/10

Domestic Patent References:

JPH0890135A	1996-04-09
JP2003148626A	2003-05-21
JP2000176591A	2000-06-27
JP2008302403A	2008-12-18
JP2008178885A	2008-08-07

Foreign References:

WO2009096434A1

2009-08-06

Attorney, Agent or Firm:

Kiwa Patent Office

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