激光切割模切板的参数研究

Parametrical Study on Laser Cutting Die- board

采用CO2激光切割模切板,研究激光功率、切割速度、焦点位置等参数和切割深度之间的相互关系,研究如何确定最大切割速度和优化切割速度。试验结果表明,随着激光功率增加、切割速度减小和焦点位置下移,切割深度增加;给定材料厚度下的最大切割速度大于最佳切割速度。通过对切缝形状的观察发现,两壁面对激光有壁面聚焦效应,多次反射有利于切割深度的增加,并给出判断存在多次反射的方法。

CO2 lasers is eonducted to cutting die-hoard with the aim of discussing the relationship between cutting depth and parameters such as laser power, cutting speed and focal position. Results show that cutting depth increases with the increasing of laser power, the decreasing of cutting speed and the focal position downward. The maximum speed is more than the optimunl speed at constant thickness. Both two walls have wall focusing effects on the incident beams. Multiple reflections arc favor for the increasing the cutting depth. Meantime, the method for judging the existence of multiple reflections is provided.