Title:
FASTENING DEVICE AND FASTENING METHOD
Document Type and Number:
Japanese Patent JP2021191584
Kind Code:
A
Abstract:
To prevent a region to be fastened with a rivet from decreasing in fatigue strength as a gap is formed between the rivet and a through hole when a head of the rivet is plastically deformed too much.SOLUTION: There is provided a fastening device that comprises: an upper anvil 110 arranged facing an end face of a head of a rivet; a lower anvil arranged facing an end part of a shaft part of the rivet; and a pressing mechanism generating press force decreasing the distance between the upper anvil 110 and lower anvil along an axis X to plastically deform the rivet, wherein a bottom face 111 orthogonal to the axis X and a support face 112 gradually increasing in protrusion length L2 along the axis X to the bottom face 111 from an inner peripheral side to an outer peripheral side in a radial direction RD are formed on the end face 110a of the upper anvil 110, and an angle β of inclination of the support face 112 is smaller by a predetermined angle than the angle of inclination of an inclined face of the rivet.SELECTED DRAWING: Figure 5
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Inventors:
TSUKIOKA YUKI
IKADA AKIRA
TAKAHAGI MICHINOBU
IKADA AKIRA
TAKAHAGI MICHINOBU
Application Number:
JP2020098656A
Publication Date:
December 16, 2021
Filing Date:
June 05, 2020
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B21J15/10; B21J15/00; F16B19/05; F16B19/06
Attorney, Agent or Firm:
Noriharu Fujita
Miori Takao
Kawakami Miki
Daisuke Nagata
Miori Takao
Kawakami Miki
Daisuke Nagata