scholarly journals High Speed EDM and Laser Drilling of Aerospace Alloys

Procedia CIRP ◽  
2016 ◽  
Vol 42 ◽  
pp. 526-531 ◽  
Author(s):  
Mohammad Antar ◽  
Dimitrios Chantzis ◽  
Sundar Marimuthu ◽  
Philip Hayward
Keyword(s):  
High Speed ◽  
Laser Drilling ◽  
Aerospace Alloys

Delamination-free millisecond laser drilling of thermal barrier coated aerospace alloys

2019 ◽  
Vol 31 (4) ◽  
pp. 042001 ◽  
Author(s):  
Sundar Marimuthu ◽  
Bethan Smith ◽  
Aislinn Kiely ◽  
Yijun Liu
Keyword(s):  
Laser Drilling ◽  
Thermal Barrier ◽  
Aerospace Alloys ◽  
Millisecond Laser

A general high-speed laser drilling method for nonmetal thin material

2013 ◽  
Author(s):  
Zhijian Cai ◽  
Guangsheng Xu ◽  
Zhou Xu ◽  
Zhiqiang Xu
Keyword(s):  
High Speed ◽  
Laser Drilling ◽  
Drilling Method

scholarly journals Optimization of an autonomous robotic drilling system for the machining of aluminum aerospace alloys

2021 ◽  
Author(s):  
Benjamin Pereira ◽  
Christian Andrew Griffiths ◽  
Benjamin Birch ◽  
Andrew Rees
Keyword(s):  
High Speed ◽  
Industrial Robot ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Cnc Milling Machine ◽  
Aerospace Alloys ◽  
Machine Spindle ◽  
Drilling System ◽  
Condition Monitoring System ◽  
Exit Burr

AbstractThis paper aims to identify the capability of a highly flexible industrial robot modified with a high-speed machine spindle for drilling of aluminum 6061-T6. With a focus on drilling feed rate, spindle speed, and pecking cycle, the hole surface roughness and exit burr heights were investigated using the Taguchi design methodology. A state of the art condition monitoring system was used to identify the vibrations experienced during drilling operation and to establish which robot pose had increased stiffness, and thus the optimum workspace for drilling. When benchmarked against a CNC machine the results show that the CNC was capable of producing the best surface finish and the lowest burr heights. However, the robot system matched and outperformed the CNC in several experiments and there is much scope for further optimization of the process. By identifying the optimum pose for drilling together with the idealized settings, the proposed drilling system is shown to be far more flexible than a CNC milling machine and when considering the optimized drilling of aerospace aluminum this robotic solution has the potential to drastically improve productivity.

Cu-Direct Laser Drilling of Blind Via-Hole in Multi-Layer PWBs: Process Visualization Using High-Speed Camera Images

2012 ◽  
Vol 516 ◽  
pp. 30-35 ◽  
Author(s):  
Kuniyoshi Obata ◽  
Toshiki Hirogaki ◽  
Eiichi Aoyama ◽  
Keiji Ogawa
Keyword(s):  
High Speed ◽  
Substrate Surface ◽  
Laser Drilling ◽  
Drilling Process ◽  
Positional Accuracy ◽  
Board Density ◽  
Process Visualization ◽  
Direct Laser ◽  
Via Holes ◽  
Direct Drilling

Electrical circuits of Printed Wiring Boards (PWBs) have become multi-layered. Therefore, the formation of micro-blind holes for interlayer electrical connections (blind via holes: BVH) is required. As a result, Cu-direct laser drilling is attracting attention. However, Cu-direct drilling is problematic in that it produces a copper overhang as a result of copper and resin, which have different decomposition points, being melted simultaneously. In addition, the state of PWB surface after the laser drilling is very important. However, this procedure restricts the board density that can be achieved as a result of the limited positional accuracy of the etching process. Consequently, using a Cu-direct drilling process, which does not require etching of the copper foil, to drill BVHs to connect copper foils using a CO2 laser beam has been receiving considerable attention for the next-generation high density PWB manufacturing. However, in the Cu process of generating a direct and overhang problem, there is the problem of accuracy on the substrate surface. In contrast, in-depth research on quality companies has not been performed. Thus, we observe the removal process. Furthermore, we demonstrated reduced overhang.

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