Abstract
In recent years, demand for the processing of new materials, which cannot be processed using conventional diamond grinding wheels, and demand for high precision parts is increasing. Especially in the case of high precision grinding there is the problem of drop–off of abrasive grains and limit to the concentration of the abrasive in the grinding wheel. In this research, PCD material that has a high concentration of diamond particles is used. It is proposed that the binder of the PCD material can be removed by electrical discharge machining and the remaining skeletal 3D structure can be used to manufacture a new grinding wheel. From the results of the experiments, it is confirmed that EDM of PCD using special conditions can create a porous grinding wheel. Furthermore, in the grinding of tungsten carbide using this porous cylindrical PCD material, appreciable removal efficiency could be achieved.
