Nowadays a great accent lies in the quality control of weld joints. Presence of the defects in weld joints and incorrect diagnostics usually causes the collision and the crash of welded constructions. The paper deals with the comparison of results obtained by the ultrasonic techniques, TOFD and Phased Array with the classical radiography method. The differences in defect size determined by various methods lead to different results determining the residual life of welded construction.
Original scientific papersThe application of production lines without the use of robots in heavy, monotonous, unhealthy or high-precision works is not just ineffective and inhumane but also economically unprofitable. The use of robotics in manufacturing processes is therefore necessary to ensure high productivity of products having satisfactory quality and guaranteed repeatability of production. The article points out inaccuracies in positioning the robotic arm tool depending on the robot axes rotation, welding speed and predefined trajectory shape. Fanuc M-710iC/50 robot showed biggest inaccuracies in movement speed of 50 mm/s.
Keywords: accuracy; correction; production; robot
Netočnosti pozicioniranja industrijskih robota i načini njihovog ispravljanjaIzvorni znanstveni članak Primjena proizvodnih linija bez uporabe robota u teškim, monotonim, nezdravim ili visoko preciznim radovima ne samo da je neučinkovita i nehumana već je i ekonomski neprofitabilna. Primjena robotike u proizvodnim procesima stoga je potrebna kako bi se osigurala visoka produktivnost proizvoda zadovoljavajuće kvalitete i garantiranog ponavljanja u proizvodnji. U radu se ukazuje na netočnosti u pozicioniranju ruke robota ovisno o rotaciji osovine robota, brzini zavarivanja i predviđenoj putanji. Robot Fanuc M-710iC/50 pokazao je najveće netočnosti kod kretanja brzinom od 50 mm/s.
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