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Title:
DOUBLE-FACED ROTATIONAL FRICTION EXTRUSION RIVETING DEVICE AND RIVETING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/133974
Kind Code:
A1
Abstract:
Disclosed are a double-faced rotational friction extrusion riveting device and a riveting method therefor. The double-faced rotational friction extrusion riveting device comprises a device body, and clamping bars and connection shafts which are at two sides, the bottom faces of the connection shafts at two sides being processed with spherical grooves, and the connection shafts at two sides being connected to the device body by means of the clamping bars, so as to realize the rotation and axial movement thereof. The double-faced rotational friction extrusion riveting method comprises the following steps: a, drilling through-holes in the connection regions of lapping workpieces; b, inserting a riveting column into the through-holes, and adjusting the connection shafts at two sides to two ends of the through-hole positions, the groove on the bottom face of the connection shaft at one side abutting against the riveting column; c, rotating the connection shafts and axially pressing the riveting column until the bottom faces of the connection shafts are in contact with the surfaces of the workpieces, and filling the spherical grooves with plasticized riveting column material; and d, axially lifting up the connection shafts, and the riveting connection being completed when the workpieces are cooled. The device of the present invention has a simple structure and is easy to manufacture, and the riveting method of the present invention has a good applicability, and can obtain a joint having an aesthetic formation and excellent mechanical properties at one time.

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Inventors:
SHEN YIFU (CN)
YAN YINFEI (CN)
NI RUIYANG (CN)
HUANG GUOQIANG (CN)
GUO XIAOHAN (CN)
LI JUNPING (CN)
Application Number:
PCT/CN2019/092649
Publication Date:
July 02, 2020
Filing Date:
June 25, 2019
Export Citation:
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Assignee:
UNIV NANJING AERONAUTICS & ASTRONAUTICS (CN)
International Classes:
B21J15/10; F16B19/04
Foreign References:
CN109433996A2019-03-08
CN102518630A2012-06-27
CN102430687A2012-05-02
CN1938120A2007-03-28
CN102615508A2012-08-01
GB575556A1946-02-22
Attorney, Agent or Firm:
NANJING ZHENGLIAN INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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