Contact length in grinding, part 2: evaluation of contact length models

摘要

A non-linear curve fit method was used to identify model parameters for the prediction of contact length in grinding. The evaluation shows that the model based on a surface roughness factor demonstrates a high degree of correlation withexperimental trends and behaviour. It was found that the roughness parameter R{sub}r is insensitive to depth of cut, speed ratio and material hardness, but is sensitive to the wheel-workpiece material combinations and whether grinding is conducted with or without coolant.