| 摘要 |
PURPOSE:To set the reference surface and reference point of a work diversely and to eliminate the need to form a waste hole in an end when a slanting hole is bored by providing a cylindrical reference shaft on the interval surfaces of the intersection part of a long-piece part and a short-piece part which are united together at right angles in an L shape, and projecting both its end parts from the long-piece part and short-piece part. CONSTITUTION:An end face gauge 1 is in the L shape having the metallic long- piece part 2 and short-piece part 3 in one body precisely at right angles, and the cylindrical reference shaft 5 is provided laterally on the internal surfaces of the intersection part 4 of the long-piece part 2 and short-piece part 3. The diameter of this reference shaft 5 is specified with high precision (below several 1,000ths mm.) previously and the left and right end parts 6 and 6 of the reference shaft 5 are projected from the side faces of the long-piece part 2 and short-piece part 3. Then, a permanent magnet 7 is embedded in the internal surface of the long-piece part 2 and the reverse surface of the permanent magnet 7 is opposed to the reverse surface of the long-piece part 2. The end face gauge 1 is held on the work by the permanent magnet 7. |
