A STATISTICAL MODEL FOR RESEARCH ON THE FOCAL POSITION EFFECT ON THE TAPER OF LASER DRILLING
The relationships between focal position and diameter or taper of holes drilled by CO2 laser in ceramics were investigated by a new method named “equivalent stack plate method(ESPM).The diameter of holes in different depth can be accurately measured by the new method. The present study reported a statistical analysis to study the effects of the focal position on the quality of the drilled holes and optimization of the processing parameter. The study was conducted based on the statistical experiments with the variable focal position from +1mm to -3mm. Then the relationship between focal position and diameter in different depth and corresponding mathematical model were ascertained by polynomial fitting analysis. The unique characteristics of ceramic during laser drilling were also discussed. The results indicate that the ideal focal position to achieve minimum taper in laser drilling holes should be set above the surface of workpiece.
laser drilling statistical model focal position taper
Yinzhou Yan Lingfei Ji Yong Bao Yijian Jiang
Institute of Laser Engineering, Beijing University of Technology Beijing, 100022, P. R. China
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
420-425
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）