Title:
FRACTURING DEVICE AND FRACTURING METHOD FOR CONNECTING ROD, AND MANUFACTURING METHOD FOR CONNECTING ROD
Document Type and Number:
WIPO Patent Application WO/2021/024892
Kind Code:
A1
Abstract:
In the present invention, in order to provide a fracturing device and a fracturing method for a connecting rod that enable a prescribed fracture surface to be formed with excellent yield when a large-diameter section of the connecting rod is fractured in two: clampers 510, 520 are provided for pressing bolt seat surfaces 921, 922 of a large-diameter section 920 of a connecting rod 900 before fracturing the large-diameter section and for restricting the large-diameter section, which is to be fractured in two at the time of fracture, so as to not move in a direction orthogonal to the center axis direction of the large-diameter section; and clamper position-fixing movement-restricting parts 610, 620 are further included so as to keep pressing forces of the clampers with respect to the bolt seat surfaces of the large-diameter section within a predetermined prescribed range before the connecting rod fractures, and to prevent the clampers from moving in the direction orthogonal to the center axis direction of the large-diameter section of the connecting rod due to the fracturing force that the large-diameter section receives at the time of fracture.
Inventors:
MATSUI JUNGO (JP)
HASE HIROICHI (JP)
MURATA GAKUTO (JP)
HASE HIROICHI (JP)
MURATA GAKUTO (JP)
Application Number:
PCT/JP2020/029174
Publication Date:
February 11, 2021
Filing Date:
July 29, 2020
Export Citation:
Assignee:
YASUNAGA KK (JP)
International Classes:
B23P13/00; F16C7/02
Domestic Patent References:
| WO2007055254A1 | 2007-05-18 |
Foreign References:
| JP2001512049A | 2001-08-21 |
Attorney, Agent or Firm:
MIYAKAWA Kohichi (JP)
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