EFFECT OF GRINDING PARAMETERS ON SURFACE ROUGHNESS AND CUTTING FORCE WHEN SURFACE GRINDING 90CrSi STEEL BY HAI DUONG GRINDING WHEEL

Abstract

The parameters of the cutting mode and the cooling lubrication regime play an important role in determining the efficiency and quality of the surface grinding process. In this study, the full factorial design (2^k) was used to investigate the effect of grinding parameters of the cutting mode and the cooling lubrication regime on the surface roughness and the normal force when surface grinding 90CrSi steel by Hai Duong grinding wheel. Minitab 19 software is used to design the L32 experiment with 5 input parameters: cooling flow (LL), coolant concentration (ND), feed rate (S_d), table speed (V_B) and grinding depth (t). The analysis results show that the interaction between ND, S_d and V_B has the greatest influence on the surface roughness (Ra) after grinding, while the depth of cut has the greatest influence on the normal force (Fy). In addition, a regression model determining surface roughness and normal force has been proposed. These results can be applied directly in production, helping to select products, improve product quality and reduce related costs.