Laser processing of freeform surfaces: A new approach based on an efficient workpiece partitioning strategy
Laser processing of freeform surfaces: A new approach based on an efficient workpiece partitioning strategy
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DOI：
10.1016/j.ijmachtools.2020.103593
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发表时间：
2020-09-01
影响因子：
14
通讯作者：
Dimov, S.
中科院分区：
文献类型：
--
作者：
Batal, A.;Michalek, A.;Dimov, S.
提出了一种自由曲面激光加工的新方法。该方法采用经验数据的3D限制的一个给定的激光加工，即负面影响的焦点偏移和入射角的工艺性能，分割成三角形的激光加工领域的自由曲面。通过这种方式，可以通过最小化零件重新定位来最大限度地提高加工效率，同时充分利用高动态振镜扫描仪的功能。在这一概念验证中，使用所提出的方法，3D打印Ti-6Al-4V球壳的表面改善了90%以上，随后进行了纹理化。结论是这种新方法的优点，加工自由曲面一致和有效。
A novel method for laser processing freeform surfaces is proposed and demonstrated in this article. The method employs empirical data on the 3D limitations of a given laser process, namely the negative effects of focal offset and angle of incidence on the process performance, to partition a freeform surface into triangular laser processing fields. In this way, processing efficiency can be maximized by minimizing part repositioning while fully utilizing the capabilities of high dynamics galvo scanners. In this proof of concept, the surface of 3D printed Ti-6Al-4V spherical shells was improved by more than 90% and subsequently textured, using the proposed method. Conclusions were made about the advantages of this new approach for processing freeform surfaces consistently and efficiently.