激光改性超声振动磨削制孔加工参数优化分析

Optimization Analysis of Drilling Parameters in Laser Modified Ultrasonic Vibration Grinding

为提升孔径出孔端面的品质及其控制精度,在超声振动辅助下针对硬质材料激光改性磨削孔加工参数的优化进行试验与研究。通过运用旋转超声方法,显著提高加工效率,有效克服硬脆材料孔加工难度大的问题。为评判孔出口的质量水平(Hd值),分析了孔出口端面崩边区域的范围,并实际测量了孔截面的面积比,进一步探讨了激光改性磨削工艺参数对Hd值的影响。通过试验综合分析,确定最佳的激光改性磨削工艺参数范围:主轴转速为14000~16000 r/min,进给速度为0.5~0.7 mm/min,振幅为7~8μm。与传统的激光加工相比,在最优参数下超声辅助激光改性加工后的表面质量显著提高,划痕大幅减少,显著提升了加工质量。这项研究对于提高硬质材料激光改性磨削的质量具有重要的指导意义,并易于在实际生产中推广应用。

In order to improve the quality and control precision of the end surface of the hole,the optimization of the processing parameters of the laser modified grinding hole of the hard material is tested and studied under the assistance of the ultrasonic vibration.By using the rotary ultrasonic method,the processing efficiency is significantly improved,and the difficulty of processing hard and brittle material holes is effectively overcome.In order to judge the quality level(Hd value)of the hole outlet,the range of the collapse area is analyzed,and the area ratio of the hole section is measured,and further discusses the influence of laser modified grinding process parameters on Hd value.Through the comprehensive test analysis,the best laser modified grinding process parameters are determined:the spindle speed is 14000-16000 r/min,the feed speed is 0.5-0.7 mm/min,and the amplitude is 7-8μm.Compared with the traditional laser processing,the surface finish after ultrasound-assisted laser modification under the optimal parameters is significantly improved,and the scratches are greatly reduced,which significantly improves the processing quality.This study has important guiding significance for improving the quality of laser modified grinding of hard materials,and it can be easily applied in practical production.