A three-dimensional model for the surface texture in surface grinding, part 2: Grinding wheel surface texture model

In order to produce ground parts that have desirable surface properties, it is necessary to understand the evolution of these characteristics through the surface generation mechanisms involved in the grinding process. Since t he geometry of the wheel surface, in part, determines the final workpiece g eometry, the influence of the 3-D structure of a wheel surface on the final workpiece geometry is studied. In this work, a wheel surface model is deve loped that can be integrated with a surface grinding process model for simu lating workpiece surface texture. The simulations utilizing the integrated model are used to study the workpiece surface roughness as a function of th e frequency characteristics of the wheel surface. The 2-D Fourier forward a nd inverse transforms are employed to study and model the 3-D surface struc ture. In particular, the effect of specific frequency components in the whe el surface on the ground surface are analyzed. It is shown that workpiece s urfaces resulting from wheel surfaces with dominant low frequency component s have higher roughness, and that the low frequency components indicate a C lustering of abrasive grains on the wheel surface.