Browse Publications Technical Papers 2020-01-0542
2020-04-14

Measurement and Evaluation of Vacuum Suction Cups using Digital Image Correlation 2020-01-0542

As vacuum suction cups are widely used in stamping plants, it becomes urgent and important to understand their performance and failure modes. Vacuum suction cups are employed to lift, move, and place sheet metal instead of human’s hands. Occasionally the vacuum cups would fail and drop parts, even it would cause expensive delays in the production line. In this research, several types of vacuum cups have been studies and compared experimentally. A new tensile device and test method was developed to measure the pulling force and deformation of vacuum cups. The digital image correlation technique has been adopted to capture and analyze the contour, deformation and strain of the cups under different working conditions. The experimental results revealed that the relevant influential parameters include cup type, pulling force angles, vacuum levels, sheet metal curvatures, etc. Also, the deformation distribution and history of the cups denote the weak part and failure mechanism during operation. Moreover, this work could help designers and operators thoroughly understanding the performance of vacuum suction cups and greatly improved in further work.

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