Title:
METHOD FOR MANUFACTURING RETAINER FOR SELF-ALIGNING ROLLER BEARING
Document Type and Number:
WIPO Patent Application WO/2021/235021
Kind Code:
A1
Abstract:
[Problem] To shape a retainer for a self-aligning roller bearing by means of stamping without limitation on the size of the retainer and without an increase in machining cost, the retainer providing better assembly workability for the bearing without reducing the life of the bearing. [Solution] A retainer (1) for a self-aligning roller bearing comprises a pair of single-row retainers (2A), (2B) that each guide one of two rows of rollers. The single-row retainers (2A), (2B) have, on a large-diameter-side end surface (3A), an indented engagement part (A) having an engagement depth larger than an axial gap of the bearing. A method for manufacturing the retainer (1) includes a stamping step for shaping a metal plate into the single-row retainers (2A), (2B) by means of stamping. In a step subsequent to a bowl-shape forming step for standing a large-diameter-side part of a side wall of the single-row retainers (2A), (2B), the indented engagement part A is formed on a part that becomes the large-diameter-side end surface (3A). Alternatively, in a step prior to the bowl-shape forming step, an indented part that becomes the indented engagement part (A) is formed on a part that becomes the large-diameter-side end surface (3A).
Inventors:
MAEDA HIROYUKI (JP)
YABUBAYASHI YASUKI (JP)
YABUBAYASHI YASUKI (JP)
Application Number:
PCT/JP2021/004437
Publication Date:
November 25, 2021
Filing Date:
February 05, 2021
Export Citation:
Assignee:
NAKANISHI METAL WORKS CO (JP)
International Classes:
B21D53/12; F16C19/38; F16C23/08; F16C33/48
Foreign References:
| DE19835367A1 | 2000-02-17 | |||
| JPH08326761A | 1996-12-10 | |||
| JP2002147450A | 2002-05-22 | |||
| JP2000104737A | 2000-04-11 | |||
| JP2005090740A | 2005-04-07 | |||
| FR2938027A1 | 2010-05-07 |
Attorney, Agent or Firm:
YANAGINO Yoshihide et al. (JP)
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