| 摘要 |
PURPOSE:To improve the efficiency of tool exchange, with any one of the held tools made selectable in the shortest length of time further correctly, as well as many tools holdable, by means of setting a rotational direction and a number of rotation of the Geneva. CONSTITUTION:Holding state of an arbor 70 is released by depressing downward a pushdown lever 74. Subsequently, in accordance with the position of an arm 9 that holds the required tool, the rotational direction and the number of rotation of a Geneva 33 are so set that the arm 9 may be selected in the shortest length of time, and the tool exchange work is operated. When shifting every one of each arm 9 leftward or rightward, the Geneva 33 beings to rotate simultaneously with a drum 4 begining to come down by a cylindrical cam 56, and the use finish tool is promptly and correctly replaced with the new tool by one rotation of the Geneva 33. |
