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Title:
DYNAMIC LOAD MEASURING METHOD FOR ROCKING-DIE FORGING APPARATUS, DYNAMIC LOAD MEASURING APPARATUS, CALIBRATION METHOD FOR ROCKING-DIE FORGING APPARATUS, HUB-UNIT-BEARING MANUFACTURING METHOD, AND VEHICLE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/159955
Kind Code:
A1
Abstract:
A measurement die (43) is supported by a recessed spherical seat (12). Between the measurement die (43) and a support table (16), a measurement shaft member (45) is placed coaxially with a reference axis (α) and is linearly guided in the direction of the reference axis (α). Thereafter, while the measurement die (43) is rotated around the reference axis (α), an actual load, in the direction of the reference axis (α), applied to the measurement shaft member (45) by a load application means is measured by a load cell (48), with the measurement die (43) being pressed against the measurement shaft member (45).

Inventors:
HAGIWARA Nobuyuki (5-50 Kugenumashinmei 1-chome, Fujisawa-sh, Kanagawa 01, 〒2518501, JP)
Application Number:
JP2019/005060
Publication Date:
August 22, 2019
Filing Date:
February 13, 2019
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku Tokyo, 60, 〒1418560, JP)
International Classes:
B21J9/02; B21D39/00; B21J13/00; B21K1/05; F16C19/18; F16C29/04
Domestic Patent References:
WO2012172942A12012-12-20
Foreign References:
JP5716917B22015-05-13
JP2016011440A2016-01-21
JP2008087032A2008-04-17
JP2519610B21996-07-31
JP2018023141A2018-02-08
JP4127266B22008-07-30
JP2015077616A2015-04-23
Attorney, Agent or Firm:
TANAI Sumio et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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