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머신비전을 이용한 저널 베어링 표면 검사

Surface Inspection of a Journal Bearing Using Machine Vision

Journal of the Korean Society for Precision Engineering 2017;34(8):557-561.
Published online: August 1, 2017

1 ㈜마이크로비전 기술연구소

2 한국기술교육대학교 전기전자통신공학과

1 R&D Center, MicroVision Co., Ltd. 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#E-mail: rheem@koreatech.ac.kr, TEL: +82-41-560-1178, FAX: +82-41-564-3261
• Received: May 10, 2016   • Revised: January 10, 2017   • Accepted: May 1, 2017

Copyright © The Korean Society for Precision Engineering

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Surface Inspection of a Journal Bearing Using Machine Vision
J. Korean Soc. Precis. Eng.. 2017;34(8):557-561.   Published online August 1, 2017
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Surface Inspection of a Journal Bearing Using Machine Vision
Image Image Image Image Image
Fig. 1 Proposed journal bearing inspection system
Fig. 2 Teaching area for surface inspection: (a) Air pocket and dust inspection, (b) Part No. missing, (c) 2 Φ hole missing and displacement, (d) Part No. remarking
Fig. 3 Proposed system installation
Fig. 4 The OK results of proposed system: (a) Model A, (b) Model B, (c) Model C, (d) Model D, (e) Model E
Fig. 5 The NG results of proposed system: (a) Gas pocket defects of model A, (b) Gas pocket defect of model B, (c) 2 Φ hole missing of model C, (d) Rust defect of model D, (e) Gas pocket defect of model E
Surface Inspection of a Journal Bearing Using Machine Vision
Item Specification
Camera - Industrial 2D monochrome
- 5M pixels with Gig-E interface
- 15 frames/sec.
Lens - C-Mount 8 mm lens
PC - Intel i3 processor
- Windows 7 professional
- MS-Visual C++ 2010
I/O - DIO card of 16 input and 16 output
Lighting - Square ling type LED lighting & controller
Inspection item - Part No. remarking
- Part No. missing
- Air (Gas) pocket
-2 Φ hole missing
-2 Φ hole displacement
- Rust
Model OK Missing NG Overkill
A 4484 0 131 64 (48%)
B 6763 0 384 78 (20%)
C 3366 0 132 31 (23%)
D 6211 0 325 97 (29%)
E 6966 0 404 27 (6%)
Table 1 Proposed vision system H/W specification
Table 2 Performance evaluation