连续变参数法激光非平面加工试验研究

采用连续改变激光切削参数的方法，研究了切割条件对切口形状和尺寸的影响及切口控制方法．在试验中．通过连续改变激光移动速度、输入功率和激光束焦点相对试件表面的位置，来模拟生产实际中激光切割非平面板材的过程，得出随着激光束移动速度的增大或输入功率的减小，去除量不同程度地减小．以及焦点位置连续变化对应切口宽度的变化分布．试验参数分别设计为线性和二次方2种输入方式．在4种厚度的板材上进行．试验分析结果表明了该方法对激光切割非平面板材的有效性。

An experimental study of laser machining non-planar sheet with variable process parameters

An experimental study is presented to investigate the effects of cutting conditions on kerf geometry with variable process parameters. Laser traverse speed, incident power and laser focal positions relative to the specimen surface are varied during the cutting process to simulate the situations encountered in practice. The experimental result shows that the kerf width decreases with the increase of travel speed and the decrease of incident power as well. Various trends of the kerf geometrical features in terms of the varying process parameters as laser focal positions relative to the specimen surface are presented and analyzed, and shown to be reasonable. Discussions are also given on kerf geometry control in situations where variable cutting parameters are used.