In this thesis Objective to study to reduce the rate of waste in the production process, the rotor (Auger): a case study of agricultural machinery equipment manufacturing company The locomotives in cause analysis on waste generation and find solutions program, Pareto chart To analyze the proportion of waste and fishbone diagram to analyze the causes of the problem, the study found that the damage caused by changing the size of the jig moves the proportion 29.31 percent after ดำเนินการปรับปรุง by checking and monitoring the jig It can reduce the quantity of garbage into the 14.77 percent