Correcting shape error on external corners caused by the cut-in/cut-out process in abrasive water jet cutting
Correcting shape error on external corners caused by the cut-in/cut-out process in abrasive water jet cutting
复制标题
修正磨料水射流切割中切入/切出过程引起的外角形状误差
DOI：
10.1007/s00170-019-03564-x
复制
发表时间：
2019-07-01
影响因子：
3.4
通讯作者：
Ji, Lidanyang
中科院分区：
文献类型：
--
作者：
Chen, Ming;Zhang, Shijin;Ji, Lidanyang
随着五轴磨料水射流切割技术的发展，成功地解决了切割滞后、锥度等缺陷，实现了更高水平的切割精度。然而，由切入/切出过程引起的凸点误差和过切等形状误差成为进一步提高切割质量的关键。本文重点研究了引入/引出线消除外圆角形状误差的方法，通过理论分析发现，时差是产生凸点误差的主要原因，喷嘴横移速度慢是产生过切的主要原因。为了校正外部区域上的形状误差，找到了一个可以消除凸块误差的凸块去除角。为了避免过切，提出了一种计算最佳进/出线长度的方法。由于该方法的有效性，已在工业上得到应用。本文的结论同样适用于各个外拐角。
With the development of the five-axis abrasive water jet (AWJ) cutting technology, several defects, such as cutting lag and taper, could be eliminated successfully, and a higher level of cutting accuracy has been realized. However, the shape errors, such as bump error and overcut, caused by the cut-in/cut-out process become the key for further improvement in cutting quality. This paper focuses on shape error elimination on external corners with lead-in/lead-out lines added on. Based on theoretical analysis, it is found that jet lag is the main reason for the bump error and slow nozzle traversing speed is the main reason for overcut. To correct shape error on external area, a bump removal angle, which could be used to eliminate bump error, has been searched out. To avoid overcut, a method to calculate optimal length for lead-in/lead-out lines has been proposed. Because of the effectiveness of this method, it has been applied in industry. The conclusion obtained from this paper could also be applied to each external corner.