| 摘要 |
PURPOSE:To maintain a working point temp. at a working condition temp. by measuring the temp. at the working point of a work projected with a laser beam and comparing the measured temp. with a target temp., then controlling the output of the laser beam so as to equal the working point temp. to the target temp. CONSTITUTION:The work 1 is imposed on a driving table 2 and the laser beam 3 outputted from a laser oscillator 4 is projected via a reflecting mirror 5 and a working lens 7 to the work 1 by which the heat treatment is executed. The temp. at the laser irradiated point where heat is generated by projection of the laser beam 3 is measured by a temp. measuring instrument 8 and the measured temp. is transmitted to central control equipment 10. The central control equipment 10 compares the target temp. from a keyboard 11 and the measured temp. and applies the command signal to operate the oscillator 4 by the prescribed laser output to a laser control section 12. The control section 12 controls the laser oscillator 4 to generate the desired laser beam 3. The stable quality of the heat treatment is thereby assured and the precise heat treatment is executed. |
