| 摘要 |
PURPOSE:To provide a rough and a super finishing process without removing a work by furnishing more than two pieces of grindstones in one device for selective use. CONSTITUTION:A grindstone 21 is brought in contact with the surface of a work W supported to revolve around a shaft (a) for processing. It is pushed at a proper power by a pushing member 57, and oscillated around a grindstone-oscillating mechanism 4 around a shaft (b) to process even a curved surface. When exchanging, the grindstone 21 is removed from the work W by lifting a holder 3 through a single acting cylinder 54. Then, an index cylinder 51 is moved to the left by the distance of a grindstone pitch, and a grindstone 22 is moved to a processing position. A stopper 50 is provided to prevent the excessive lowering of the holder 3. The grindstone 22 is pushed for a next processing. |
