| 摘要 |
PURPOSE:To make it possible to minimize the deformation of a construction by automatically controlling the moving quantity of a counter balance according to the total weight of a slide table and a work on the table, so as to keep the balance of the center of gravity corresponding to the movement, CONSTITUTION:The total weight of a slide table 4 and a work, and the weight of a counter balance 5 are first input respectively. And when a command signal for moving the slide table 4 is transmitted, the moving quantity of the counter balance 5 is computed according to the signal, Then the slide table 4 moves to a machining position, and the counter balance 5 moves to a predetermined position in the opposite direction, so that the work is machined in the machining position, These movements are attained by the normal/reverse rotations of screw shafts 10, 11 for movement, which are driven respectively by motors 23, 24 into which the signal has been transmitted respectively. When the machining of the work is completed, the motors 23, 24 are rotated in the opposite direction, so that the slide table 4 and the counter balance 5 are returned to their original positions. |
