| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser beam machining apparatus and a laser beam machining method capable of performing high-speed uniform dulling on a surface of a rolling roll using a plurality of laser beam oscillators. <P>SOLUTION: A dull rolling device forms fine uneven patterns on a roll surface by condensing laser beams from laser beam oscillators and irradiating the laser beams on the surface of the rolling roll while a plurality of machining heads are moved in the roll axial direction with respect to the rotating rolling roll by using a plurality of laser beam oscillators and the machining heads to condense the laser beams, comprises a roll rotational angle detector to generate pulse signals, a laser beam oscillation control device to be operated with the pulse signals from the detector as trigger signals, a pulse counter device to count the pulse signals, a traverse position detector to detect the positions of the moving machining heads, a control device to control the laser beam oscillation by the signals of the roll rotational angle detector and the traverse position detector, and a mechanism to adjust the space between a plurality of laser beams, and performs the machining while counting the laser beam pulse number based on the roll dimension and the machining pitch so as to obtain the number of machined holes calculated in advance. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
