Abstract
The objective of this work is to design and develop an improved maize shelling machine in terms of better time management, affordable cost, portability and mechanical efficiency. The method used involved selecting appropriate materials, and utilisation of theories of failure that enable the determination of allowable shear stress on the bearing supports. It features the design calculations necessary for the completion of this work. The improvement in this work is its shelling efficiency without breaking the maize cob. The machine can be operated both manually and mechanically. A maize Sheller with a capacity of 3 horsepower was made effective for the shelling of maize. The efficiency of the machine is 96% and the production cost is ₦80 000 Nigerian naira (approximately $540).
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