Abstract
Touch dressing of electroplated diamond grinding and dressing tools enable the generation of well-defined profile modifications and grain protrusions. This paper contributes to the utilisation of ultra-short pulse laser in touch dressing technology and outlines the cutting performance of laser touch-dressed diamond tools in dressing operations of vitrified-bonded silicon carbide. Surfaces of abrasive diamond tools are cut using a picoseconds laser beam to generate a well-defined grain protrusion without thermal damage of either the nickel matrix or the diamond structure. Irradiation parameters were systematically varied in order to determine a process window. Dressing operations were carried out using conventional and laser touch-dressed dressing tools. Lower dressing forces and higher dressing force ratios outline the advantage of the laser touch-dressed diamond tools in terms of material removal efficiency. Additionally, no remarkable differences in wear progression of conventional and laser touch-dressed diamond tools were observed. Furthermore, the laser touch-dressing model is presented using stochastically-distributed grain morphologies.
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