| 摘要 |
PURPOSE: To provide a wheel dresser capable of giving a high truing capacity with large sized grains and a satisfactory dressing effect with small sized grains at the same time. CONSTITUTION: A ring-like grind stone part 3 provided in the end face portion of a rotary wheel 2 is composed of a first ring grind stone 3a and a second ring grind stone 3b provided inside the first ring grind stone 3a. Also, the sizes of abrasive grains of the respective ring grind stones 3a, 3b are made different from each other. |
