利用光纤激光加工系统对厚度为0.12mm的SUS304材料进行回转法打孔。通过正交实验方法分析了激光功率比、占空比、切割速度、重复频率、辅助气压等参数对打孔质量的影响。实验结果表明,激光打孔工艺最优参数组合是:切割速度为12mm/s,占空比为8%,重复频率为1.5kHz,功率比为85%,辅助气压为0.8MPa。在此优化参数下得到的最小打孔锥度为0.05°,且微小孔边缘热影响区较小,孔真圆度较好,可以保证较高的打孔质量。 Using the fiber laser processing system to the thickness of 0.12mm SUS304 material for rotary drilling method. The influence of laser power ratio, duty cycle, cutting speed, repetition frequency and auxiliary air pressure on the punching quality was analyzed by orthogonal experiment. The experimental results show that the optimum parameters of laser drilling are: cutting speed 12mm / s, duty cycle 8%, repetition frequency 1.5kHz, power ratio 85% and auxiliary pressure 0.8MPa. The minimum tapping taper obtained under this optimized parameter is 0.05 °, and the heat affected zone at the edge of the micro hole is smaller, and the roundness of the hole is better, which can ensure high punching quality.