激光精密切割圆弧和直线粗糙度差异分析与消除

发布时间：2018-04-10 12:26

  本文选题：激光技术 + 激光切割　； 参考：《中国激光》2015年03期

【摘要】：采用Nd:YAG激光对0.5 mm厚的1060纯铝板进行圆弧和直线精密切割时,为消除圆弧和直线切口壁面的粗糙度差异问题,通过显微镜观察圆弧切缝壁面微观形貌,在此基础上建立圆弧简化的数学模型,导出了内、外圆弧壁面粗糙度公式。在相同切割参数下,重点分析切割半径对内、外圆弧和直线壁面粗糙度差异影响规律,结果表明,随切割半径增大,外圆弧壁面粗糙度增大,内圆弧壁面粗糙度减小;当切割半径R≤7 mm时,内、外圆弧粗糙度差异明显;切割半径R7 mm时,两者粗糙度差异忽略不计。最后,先后利用响应曲面法(RSM)中最小值优化和目标值优化,获得圆弧和直线对应的工艺参数,实际切割测量后粗糙度近似一致,直线和圆弧粗糙度差异消除,此方法证明可行有效。
[Abstract]:In order to eliminate the roughness difference between circular arc and straight cut wall of 1060 pure aluminum plate with thickness of 1060 mm thick by Nd:YAG laser, the micro-morphology of arc cut wall was observed by microscope in order to eliminate the roughness difference between circular arc and straight cut wall.On this basis, the simplified mathematical model of circular arc is established, and the inner and outer arc wall roughness formulas are derived.Under the same cutting parameters, the influence of cutting radius on inner, outer arc and straight line wall roughness is analyzed. The results show that with the increase of cutting radius, the outer arc wall roughness increases and the inner arc wall roughness decreases.When the cutting radius R 鈮，

本文编号：1731192