Redesign of the SureTrack grader transfer bin using Axiomatic Design theory
The SureTrack grader manufactured by Marel is equipped with transfer bins for grading of whole salmon. Two issues are related with the transfer bins themselves, the bins are expensive to manufacture and cracks in the weld joining the sides of the bin have been observed. The objective of the project is to redesign the SureTrack bin to achieve more strength at a lower cost, the redesigned bin shall be fully compatible with the drive system of the SureTrack grader as well as lending itself to application as a transfer system. Axiomatic Design theory was employed during the redesign of the bin. The Customers Needs were defined from the attributes seen as desirable by the client, the Customer Needs were used to define Functional Requirements and Design Parameters for the bin at multiple levels. A new bin was designed according to the chosen Design Parameters. Analysis of the design was twofold. Firstly the strength of the bin and its welds was estimated using finite element analysis A study was designed where the skewing loads suspected to be the cause of the cracking of the welds were simulated. Software was used to estimate the manufacturing cost of the bin once all costing parameters had been defined. For comparison purposes analyses were performed on both bins. The findings are that the cost of manufacturing the redesigned bin is around 12% less than the cost of manufacturing the SureTrack bin while at the same time being about 47% stronger for the load case analysed.
Vélaverkfræði, Meistaraprófsritgerðir, Fiskiðnaður, Bútaaðferð, Tækni- og verkfræðideild, Mechanical engineering, Fish industry, Finite element method, School of Science and Engineering
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