J. Patel

M.D. Mahajan

Abstract

Grinding is an abrasive machining process which uses a grinding wheel as the cutting tool. The performance of the grinding wheel depends upon the type of abrasive material, grit size, wheel grade, wheel structure and bonding material. The quality of the machined component depends on the selection of above parameters. In the grinding of camshaft journals, due to the continuous use of grinding wheel different type of problem occurs; one of the problems is frequent dressing which affects production rate. To overcome this problem, Technique for Order of Performance by Similarity to Ideal Solution (TOPSIS) method is used to select the suitable abrasive material on the basis of four criteria like hardness, toughness, crystal size and wheel cost. The observed result is verified by the bivariate diagram between two conflicted criteria, i.e. hardness and toughness of abrasive. After that, the production rate and grinding cost per part are calculated. The results show that the Seeded-Gel (SG) alumina oxide abrasive gives the better grinding performance and not requires dressing frequently.

Keywords- Grinding Wheel, TOPSIS method, Seeded-Gel abrasive, Total Variable Cost.