| 摘要 |
PURPOSE:To reduce the weight of a bed and improve the ratio in weight synthesis, by minimizing the relative error between a processing electrode and a workpiece even if the center of gravity is displaced along with the movement of a saddle or the like on the bed. CONSTITUTION:Leveling bolts 13a, 13b, 13c are provided at the bottom of a bed 90, in positions near minimally-required reinforcing plates 15a, 15b secured on both the end faces of the bed, and in a position right under a column base 11a, respectively, to prevent the bed from being deformed when the center of gravity is displaced. Since the weight of the bed 90 is decreased on both the sides of the column base 11a and the minimally-required reinforcing plates 15a, 15b are provided, the relative error between a processing electrode and a workpiece is very much diminished. |
