Abstract
An automatic mackerel grader is a machine that automatically sorts mackerel according to size. The chute spreads the mackerel to allow the latter to enter each roller evenly. Sorting is simulated to confirm that the multibody dynamics model of the automatic grader correctly sorts the mackerel. This process is completed according to the shape of the chute to confirm the effect on performance. A new shape of the chute and the application are proposed and evaluated by a comparison with conventional chute shapes. RecurDyn, a multi-body dynamics program, is used for the sorting simulation. The contact parameters are defined by Hertzian contact theory using the material information of mackerel and C/S steel. A rigid-body mackerel model is used to express the behavior of mackerel. Sorting is simulated for each shape. The sorting accuracy and error of the new shape are compared with those of two existing shapes. The new shape shows a 0.29 mm sorting error and better sorting accuracy than the existing shapes.
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Recommended by Associate Editor Sungsoo Na
Jeong-Hyun Sohn is a Professor of Department of Mechanical Design Engineering at Pukyong National University since 2003. His interests are in multi-body system dynamics and particle dynamics.
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Jun, C., Kim, J. & Sohn, J. Chute design of mackerel automatic grader using multibody dynamics. J Mech Sci Technol 32, 49–55 (2018). https://doi.org/10.1007/s12206-017-1206-x
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DOI: https://doi.org/10.1007/s12206-017-1206-x