| 摘要 |
PURPOSE:To reduce the weight, to improve the responsibility in position controlling and to enable the working of high accuracy by enabling the laser beam irradiation from every angle with two reflection systems. CONSTITUTION:The optical axis C of a parabolic mirror 19 is coincided with the prescribed line of the body to be worked by moving the machine head 14 on which the parabolic mirror 19 is provided. The machine head 14 is rotated with its rocking and is moved as well in X axis and Z axis directions by rotating the driving motor 17 provided on the outer peripheral part of a horizontal arm 8c. With the rocking rotation of the head 14 the optical axis C is kept vertically for the working face of the body to be worked at all times in succession and also moved vertically in Z axis direction, so the focus of the laser beam is always directed for the working face. In this way, the laser beam is held vertically for the working face of the body to be worked without changing the focus at all times only with the rocking rotation of the head 14 with moving it in X axis and Z axis directions, and the laser beam machining is performed in succession. |
