| 摘要 |
PURPOSE: To hardly generate the deformation of a work and to improve the working precision by clamping four sides of a work with a clamper which is provided on each side of a work holder and driven individually and machining the metal sheet. CONSTITUTION: As the action to hold a work with a work holder 67, the work holder 67 is made in the horizontally state and the work is mounted on the holder 67. Next, the work is clamped with a 1st, a 2nd clampers 83, 85, and two directions of the work are held. Next, the work is clamped with a 3rd, 4th clampers 87, 89, the tension is applied on the work and four directions of the work can be held. In such a way, in a time of machining the work, the deformation (dull) is generated hardly and the working precision can be improved. |
