激光打孔工艺普遍存在的问题是加工精度不高。众所周知,影响加工精度的因素很多,但除工件材料本身的因素外,大体可规纳为三个方面,即激光束的空间结构、时间结构和焦点位置。下面就这三个方面的主要因素作如下分析。一、功率密度q由于激光打孔不是采用几何形状精确的工具加工材料,而是采用能量充足的聚焦光束加 The ubiquitous problem of laser drilling technology is the processing accuracy is not high. It is well-known that there are many factors that affect the machining accuracy. However, except for the material of the workpiece itself, it can generally be considered as three aspects: the spatial structure, the temporal structure and the focus position of the laser beam. The following three major factors in these three areas for the following analysis. First, the power density q Laser drilling is not due to the use of geometric shapes accurate tooling materials, but the use of sufficient energy to focus the beam plus