| 摘要 |
In a process for producing a bent part from an elongated workpiece, in particular from a tube, use is made of a bending machine having a bending head with a bending arm which has a device for engaging on an end portion of the workpiece and can be rotated about a bending axis by means of a bending drive controlled by a control device. First of all, a portion of the workpiece is moved into a starting position in the region of engagement of the bending head. Then, the engagement device is moved into contact with the end portion. Then, a bend is produced between a supply-side portion and the end portion in a bending operation by rotating the bending arm about the bending axis. An actual bend angle produced by the bending operation is then determined. To determine the actual bend angle, the bending arm is moved into a measurement position in which an element of the bending arm is in contact with the end portion, and a sensor signal which represents the rotary position of the bending arm in the measurement position is processed to determine the actual bend angle. |
