This research is to design and build a prototype hack corn using a 2 horsepower motor speed 1400 RPM. By the beginning of the corn can hack after hack size not exceeding 3 cm in size and after no more than 1 cm. machine Chopper to chop trees, corn is 59 cm, width 85 cm, length 87 cm, height of trees to chop corn performance rate does not exceed the size of the hack after hack.3 cm, the average mass of 242 kg per hour and the rate of shear size, after no more than 1 cm and the average mass hack 158 kg per hour. After early experiments to find the performance of a corn chopper machine hack by assigning the raw materials before beginning the corn mass 10 kg size pieces, chop the corn after no more than 3 cm and the average mass hack 9.666 96.66 percent and 28.78. kg size pieces of corn after mass not more than 1 cm and the average hack 9.566 95.66 percent representing kg. Power consumption value in using a corn chopper 8 hours per month is 123 per month, and the payback period of a hack is 1 year 2 days early corn.
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