| 摘要 |
PURPOSE:To provide a turret base of a laser beam machine which can automatically change a lens holder having condenser lens different in irradiating directions of the laser beam or in the respective focal distances a short time. CONSTITUTION:A side working lens holder 16 or an inside working lens holder 17 are provided respectively on the end surface of an outer surface working lens holder 14 on the outer periphery of the turret 5 set so that revolution and indexing can be carried out on the turret base body 1 around the revolutional central shaft 4, the direction of the laser beam made incident on a beam guiding tube provided unrotatably concentrically with the revolutional central shaft of the turret is changed through a reflecting mirror and the laser beam is condensed an the working surface through the condenser lens having a focal distance of meeting the lens holder indexed on a working position to execute heat working. |
