| 摘要 |
<p>Labor required for knowing what extent of bending of a plate corresponds to what degree of angle of the bent portion is reduced. A bending angle detection apparatus (50) has a sensor ring L (64), a holder (62), bearings (70), the motor body of a servomotor (60), and a rotation angle sensor (102). The sensor ring L (64) produces a signal corresponding to whether the apparatus is contacted with a blade member plate or not. The holder (62) and the bearings (70) rotatably connect the sensor ring L (64) to a bending machine. The motor body of the servomotor (60) drives the sensor ring L (64) so that it is rotated. The rotation angle sensor (102) detects the rotation angle of the sensor ring L (64). In addition, the holder (62) and the bearings (70) connect the sensor ring L (64) to the bending machine so that the rotation axis of the blade member plate in the case where the bending machine bends the blade member plate coincides with that of the sensor ring L (64).</p> |
