| 摘要 |
PURPOSE:To perform cutting by grindstone efficiently by a minor power in making a small grinding resistance through cutting, making the cutting grindstone oscillate within the cutting surface. CONSTITUTION:Edge of the rod 82 for oil pressure cylinder 78 is connected with an axis 84 arranged at a lower surface of the swinging board 50, and the swinging board 50 rotates back and forth together with the fixed arm 64 with shafts 54a, 54b as a center by pushing the rod 82 in the axis, while the cutting grindstone 30 performs back and forth motion and up and down motion within the cutting surface against the work. Therefore, the oscillation of grindstone 30 and rotation of the work are synthesized, and the grindstone 30 grinds the cutting section over a longer range within the cutting surface to lead to achieve a speedy cutting. |
