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Title:
PROCESSING METHOD OF OUTER RING FLANGE PART OF WHEEL BEARING DEVICE
Document Type and Number:
Japanese Patent JP2020176640
Kind Code:
A
Abstract:
To provide a processing method of an outer ring flange part of a wheel bearing device which can grind a fastening face fastened with a bolt of the outer ring flange part so as to have surface roughness at which a regulated thrust force can be secured, and can shorten a grind processing time.SOLUTION: A fastening face 54 is lathe-turned so that a value which is obtained by calculating a friction coefficient μ of the fastening face 54 from the following regression equation with a kurtosis Rku of a roughness curve of the fastening face 54 fastened with a bolt 62 of an outer ring flange part 52 of a wheel bearing device 10, arithmetic average roughness Ra, and an average length RSm of a roughness curve element set as explanation variables reaches 0.088 or larger to 0.170 or smaller. μ=0.157-0.028×Rku+0.012×Ra-0.042×RSm/1000+0.0002×T. Here, T is the fastening torque of the bolt 62, and a value which is preset within a range of 64 Nm or larger and 96 Nm or smaller.SELECTED DRAWING: Figure 1

Inventors:
ISHIKAWA TETSUYA
YOKOTA TATSUYA
JIMBO TOMOHIKO
INOUE HIROFUMI
Application Number:
JP2019077282A
Publication Date:
October 29, 2020
Filing Date:
April 15, 2019
Export Citation:
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Assignee:
JTEKT CORP
International Classes:
F16C33/58; B23B1/00; B23B5/00; B60B35/02; F16C19/18; F16C33/64
Attorney, Agent or Firm:
Sancrest International Patent Office