| 摘要 |
PURPOSE:To easily set the cutting width of groove, etc., formed with the beam to equal in every kind of directions by changing the position of the fulcrum giving component which holds the intermediate part of the beam projecting part supporting member with the fulcrum position transforming mechanism. CONSTITUTION:The section of the focus of laser beam radiating from the laser torch 64 to the laminated plate is made as an elliptical shape with a minor axis alpha in X axial direction and a major axis beta in Y axial direction. In this case, the 2nd axis 55 is made eccentric by the length (a-alpha)/2 from the 1st axis 8. The laser torch 64 pictures the locus of elliptical shape with the major axis (a-alpha) of X axial direction and the minor axis (a-beta) of Y axial direction, and the outer most part of the locus pictured with the laser beam is made to the circular shape of diameter a. At the same time, when the laminated plate is moved to the X direction with the X-Y table, the laser beam pictures the locus of trochoide state like L1 line and the groove S of width (a) constituted of L2 line and L2 line connected with the outside part formed on the laminated plate. |
