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Analysis and Improvement of Quality in Wet Grinder Manufacturing Industry Through Customer Complaint Investigation

L.Initha, J.Jegan, R.Kumar

This paper proposes on existing problem in performance of wet grinder industry, which can be reduced .The investigation was carried out in wet grinder industry on customer complaint for the quality attainment of wet grinder. Quality tools like Pareto diagram and cause & effect diagram are used to identify the problem area and causes. The major problem is longer grinding time, which leads to more energy consumption and higher torque. The aim of this paper is mathematically describe the design of the shell and identify the factor which affects them. The grinding energy of wet grinder is calculated and it is reduced by modifying the existing design. The grinding energy of existing design which has been reduced from 520Joules to 432.5Joules.The performance of grinder has improved by the reduction of diameter from 300mm to 250mm, which leads to reduction of twisting force from 3000N-mm to 2500N-mm using modified design. With the help of Ans ys software, displacement of the shell is arrested and twisting force of 2500N-mm is applied over the shell along with pre-stressed force 100N for all parts and found that the design is safe by matching operating frequency and obtained frequency.