| 摘要 |
PURPOSE:To achieve a bending action accurately with a larger angle of bending by moving a slide member longitudinally through a screwing of a first thread part rotatable by a rotation drive means down on a second thread part. CONSTITUTION:A motor 31U rotates clockwise, for instance, while a motor 31D rotates counterclockwise, by the same revolutions. Therefore, a male thread part 33U turns clockwise in a female thread part 34U and in response to the rotation thereof, a slide member 30U moves backward (in a direction of the arrow (b)) by a distance (x) to draw an angle wire 25U backward by the distance (x). At the same time, a male thread part 33D turns counterclockwise in a female thread part 34D and a slide member 30D moves forward (in a direction of the arrow (a)) by the same distance (x) with the slide member 30U. According to the moving distance (x), an angle wire 25D gets slack causing a bending part 10 to bend upward. Thus, a large angle of bending is obtained at a bendingpart with a relatively large diameter thereby achieving an accurate bending manipulation. |
