| 摘要 |
The invention relates to a method and apparatus for bending workpieces, wherein the workpiece is bent at a desired angle with the aid of bending means, which can be moved under the control of a processing unit for the purpose of carrying out a bending operation. The desired bending angle and a desired tolerance are fed to the processing unit, after which the processing unit moves the bending means in successive bending steps i (i=1.....N), wherein each bending step i comprises the step of bending the workpiece at a desired bending angle minus an angular value, which increases with each step i. Then the bending means are moved back and the return movement is stopped before the force with which the workpiece is clamped between the bending means falls below a predetermined value, after which a next bending step is carried out until the bending angle that is measured upon the return movement remains smaller than the desired bending angle plus the desired tolerance. |
