| 摘要 |
An apparatus for grinding a workpiece (1) while electrolytically dressing an electrically conductive grinding wheel (2). The apparatus has an electrically conductive grinding wheel (2) with a contact surface for contacting the workpiece (1), an electrode (3) opposed to the grinding wheel (2) and spaced a distance therefrom, a nozzle (4) for supplying conductive fluid between the grinding wheel (2) and the electrode (3), and a device (5) for applying a voltage between said grinding wheel (2) and said electrode (3). An eddy current sensor (10) is arranged in proximity to the working surface of the grinding wheel (2) for measuring the position of the grinding wheel (2) in a non-contact manner. A grinding wheel controlling device is provided for controlling the position of the grinding wheel (2) based on the values measured by the eddy current sensor (10). The apparatus can measure the dimensions of the grinding wheel (2) during its grinding operation without being influenced by the grinding fluid and the nonconductive film formed on the wheel (2) and can therefore efficiently carry out high accuracy grinding without a high degree of operator skill. <IMAGE> |
