Investigation of the burnishing force during the burnishing process with a cylindrical surfaced tool

This paper presents a three-dimensional burnishing force model which was studied based on elastic-plastic contact mechanics and elastic-plastic impact mechanics. Effects from different aspects are involved in this model, such as macro- and micro-shape parameters, mechanical properties, physics properties, and burnishing process parameters. From this burnishing force model, a more ideal burnished surface can be obtained by deliberately controlling certain parameters. So it can be said that the burnishing force model obtained is very important for promoting the use of the burnishing process, which can be used effectively to reduce surface roughness and increase surface hardness of a workpiece. A simulation curve is obtained from the model. Burnishing process experiments have been undertaken in which yellow brass H62 was selected as the specimen material and a new cylindrical polycrystalline diamond tool developed by the authors was employed in the burnishing process. The majority of the simulation curves are in good agreement with the experimental curves. It has been found from both theoretical and practical studies that three components of burnishing force increase exponentially with the increase of burnishing depth and the Y dimensional burnishing force is much larger than the other two; this phenomenon is very different from that of the cutting process.