Laser energy control system and laser cutting machine

• Main Authors: YANG ZHAOHUI, LV HONGJIE, TAN TAO, GAO YUNFENG, ZHAI XUETAO, SU PEILIN
• Format: Patent
• Language: Chinese; English
• Published: 08.01.2014
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

A laser energy control system comprises a polarization selector, a polarization attenuation piece set and a multi-position cylinder, wherein the polarization selector is used for adjusting the ratio of polarization laser P and the ratio of polarization laser S; the polarization attenuation piece set comprises a plurality of polarization attenuation pieces which are respectively arranged on the multi-position cylinder and provided with different attenuation multiplying power intervals, the polarization attenuation pieces form the continuous attenuation multiplying power intervals of which the attenuation capabilities are gradually increased, and part of the attenuation multiplying power intervals of every two adjacent polarization attenuation pieces are overlapped; the multi-position cylinder can move in the direction perpendicular to the propagation direction of a laser beam passing through the polarization selector. After the laser beam passes through the polarization selector, the polarization laser P and t