DESIGN OF AUTOMATIC CASSAVA CUTTING MACHINE

Abstract

              This article presents a method for designing an automatic cassava-cutting machine with a horizontal cross-section. To reduce the cutting time of cassava varieties, reduce the problem of labor shortage, and reduce the cost of cassava production, Using an Arduino Mega 2560 microcontroller board to control the operation of the Automatic Cassava-Cutting Machine, can change the operating system into 2 systems: automatic system and manual system. Able to continuously transport cassava trees through the conveyor system, no more than 20 trees per time, and can adjust the size the length of the cassava tree to a maximum of 100 centimeters. Efficiency testing of the automatic cassava-cutting machine compared cutting with a manual chop knife found that the automatic cassava-cutting machine can increase the number of cuttings up to 1,631 logs per hour or a total of 2,965 logs per hour (plus-minus size no more than 0.5 cm.). It can also reduce the cost of cutting cassava varieties up to 0.018 baht per log from the original 0.033 baht per log, which the automatic cassava-cutting machine costs at 0.015 baht per log, and when analyzing the break-even point of using the automatic cassava-cutting machine, it was found the break-even point at the total cost of 60,197 baht from the fixed cost of 33,000 baht at the number of cassava cultivars 1,847,431 logs with a duration of 613 hours or approximately 2-3 months (in the case of using the automatic cassava-cutting machine 8 hours per day).