Abstract
Performance of grinding operation is influenced by a variety of factors amongst which dressing process is the most important. Through the dressing process, the grinding wheel topography is produced. This affects, in turn, directly the grinding forces, workpiece surface quality and grinding wheel wear. This research aims to develop appropriate dressing strategies for small abrasive wheels in internal cylindrical grinding. For this purpose, three different dressing rollers, including an electroplated, a vitrified bond form roller and a cup-dresser, with four different grinding wheels, two CBN and two corundum wheels, were experimented. The studies on the ground surface roughness values and grinding forces prove the validity of the Schmitt-diagram in internal cylindrical grinding operations. When up-dressing, a finer workpiece surface was achieved as compared to the case of down-dressing. This is associated with higher grinding forces which are caused by the finer grinding wheel surface. Further investigation was carried out on the wear rate of CBN grinding wheels. However, no measurable wear was seen up to a specific material removal volume of 9700 mm3/mm.
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