Title:
LASER SCANNING-BASED SPR FASTENING QUALITY DETERMINATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/214756
Kind Code:
A1
Abstract:
The present invention relates to a laser scanning-based self-pierce-riveting (SPR) fastening quality determination method comprising: a SPR fastening step for, in a SPR process, calculating an optimal fastening condition of a die and rivet assembly according to sheet assembly information, and enabling sheets to be SPR-fastened on the basis of the optimal fastening condition; a data collection step for, after the SPR fastening step, monitoring the surface of a fastened part formed by means of the SPR process, through a monitoring module comprising a laser scanner and a laser vision and thus collecting surface characteristics data of the surface of the fastened part; a characteristics value calculation step for, on the basis of the surface characteristics data, enabling the calculation of a quality characteristics value including the post-fastening diameter and effective length of the rivet; and a defect determination step enabling the determination of a defect in the fastened part on the basis of the surface characteristics data. In addition, according to the present invention, the effects may be achieved whereby, through a non-destructive process enabling the elimination of a process of physically destroying a test piece in order to determine the quality of SPR fastening, rapidity may be enhanced, and an on-site-friendly quality inspection may be carried out in real-time.
Inventors:
PARK YEONG DO (KR)
LEE SEUNG HUN (KR)
KANG TAE YOUNG (KR)
BACK YOUNG GON (KR)
NELLIKODE SAVYASACHI (KR)
LEE SEUNG HUN (KR)
KANG TAE YOUNG (KR)
BACK YOUNG GON (KR)
NELLIKODE SAVYASACHI (KR)
Application Number:
PCT/KR2023/005894
Publication Date:
November 09, 2023
Filing Date:
April 28, 2023
Export Citation:
Assignee:
TESONE CO LTD (KR)
International Classes:
G01N21/88; G01B11/25; G01N21/95; G05B23/02
Foreign References:
| US20140259600A1 | 2014-09-18 | |||
| CN114354626A | 2022-04-15 | |||
| JP2003103337A | 2003-04-08 | |||
| JPH10160678A | 1998-06-19 | |||
| KR101799051B1 | 2017-11-20 |
Attorney, Agent or Firm:
KIM, Jong Seok (KR)
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