Experimental apparatus for sheet metal hemming analysis
Sławomir Świłło
Faculty of Production Engineering, Warsaw University of Technology, Warsaw, Poland.
DOI:
https://doi.org/10.7494/cmms.2013.2.0449
Abstract:
A new portable system for experimental investigation in the process of sheet metal hemming was developed. In the introduction, information was provided about the need to use machine vision systems to solve problems that occur in the process of hemming. Then, a test stand designed for the practical implementation of a three-step hemming process was presented. Among the different vision systems available, a method using laser light scanning for reconstruction of the geometry of the examined hemmed sample was selected. An optical system for studies of the measurement technique and a method of image analysis used in the described example of the plastic forming process were presented. In this process, first, the test sample image is recorded, and it is analysed next to obtain information about an outline of the deformed line. Further in the text, a new method proposed by the author for the reconstruction of a 3D outline of the hemmed sample was disclosed along with a technique to calculate the value of strain on its surface. Finally, a portable measurement system for quality control of the hemmed surface edges was shown for the industrial application.
Cite as:
Świłło, S. (2013). Experimental apparatus for sheet metal hemming analysis. Computer Methods in Materials Science, 13(2), 326 – 332. https://doi.org/10.7494/cmms.2013.2.0449
Article (PDF):
Keywords:
Strain analysis, Sheet metal hemming, Experimental analysis, Vision based measurement
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