Determination of the working gap and optimal machining parameters for magnetic assisted ball burnishing

This paper presents the results of various experimental analysis regarding a permanent Magnetic Assisted Ball Burnishing (MABB) tool. This type is a special tool using the magnetic field to produce the necessary force for burnishing, it is applicable especially to rolling flat and 3D harmonic surfaces. For the correct operation of this special kind of tool, the set up for optimal distance between the tool and workpiece was introduced also taking into the account the measured rolling force (Fz), which occurs between the tool and workpiece because the magnetic force pulls the rolling balls on a cone which is located at the end of the tool. In this paper the optimisation of the process parameters for burnishing of C45 normalized pre-machined steel is also presented. To determine the dominant machining parameters the resulted surface roughness and the tribological parameters were also anaysed. The evaluation was completed by advanced measuring and IT equipment.