Online vision-based inspection system for thermoplastic hot plate welding in window frame manufacturing

Pablo Martinez Rodriguez, Mohamed Al-Hussein, Rafiq Ahmad*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)
12 Downloads (Pure)

Abstract

Current manual quality control processes in continuous production environments are limited in impact and reliability. An online automatic inspection system is proposed to generate quality-oriented information regarding the welding of frames in window manufacturing. Using novel edge detection techniques and the Hough transform, a novel algorithm is presented to accurately estimate in real-time welding angles and the overall squareness of the window frame. The inspection system presented is integrated in an automated four-point welding machine and provides decision support to quality control operators regarding the conformity of welded frames. The system is validated in a real scenario and the proposed algorithm estimates welding angles and overall frame squareness with an accuracy of 98.38%, indicating an average error less than 0.8 degrees.
Original languageEnglish
Pages (from-to)1316-1321
Number of pages6
JournalProcedia CIRP
Volume93
DOIs
Publication statusPublished - 22 Sept 2020
Externally publishedYes

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