摘要
针对现有激光切割机中焦深和焦斑之间不能兼顾的矛盾,本文提出了改善切割质量的一种新方法。该方法是根据玻璃圆锥体的光学特性提出的针对加工圆周或者圆弧形材料的方法。在激光切割系统中,用一玻璃圆锥代替导光系统和控制光束扫描或工件运动的系统。对玻璃圆锥体的理论分析和模拟研究表明:这种方法解决了焦深和焦斑之间不能兼顾的矛盾;提高了切割质量,使切割面为一严格直面;由于不需要微机控制步进电机带动工作平台或激光输出设备的复杂移动,大大减轻了激光切割机的工作量。
In practical applications of laser cutting, the quality of the cutting surfaces is the critical factor. Recently, methods for studying the influence on quality of the main process variables have been developed, which seek to improve quality rather than explain the cutting mechanism. In the present study, a new method for circle and arc cutting is presented based on optical characteristic of a glass cone. In a laser cutting system, we use a glass cone to replace beam-focusing optics to direct the beam to the workpiece, and equipment for moving either the laser beam or the workpiece, or both, to obtain the circle or arc cutting pattern. Theoretical analysis and simulation studies of a glass cone show that the method solves an issue that the focal depth and focal spot can not be optimized, ensures the strict vertical cutting surface and the high cutting quality, and greatly reduces the workload caused by the motion of the beam or the workpiece.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第11期23-28,共6页
Opto-Electronic Engineering
