| 摘要 |
PURPOSE:To measure the wear quantity of a grindstone with high resolution and in simple constitution, by using a noncontact sensor utilizing high-frequency eddy current loss and utilizing the characteristic that the output voltage is changed in accordance with a relative distance when loading the sensor with constant voltage and current. CONSTITUTION:A pickup part 2 of the sensor which is attached to a grindstone 1 and a grindstone cover 3, which are attached to a grindstone shaft 8, through a back and forth moving wheel 7, a handle 4 for adjusting forward and backward movement, and an attaching arm 5 is arranged. The output corresponding to a distance G from the surface of the grindstone 1 to the pickup part 2 is outputted from the pickup part 2. If the relative distance G is changed to G' because of the wear of the grindstone, the output voltage is changed. Thus, the wear quantity of the grindstone is measured with high resolution and in simple constitution. |
