Laser materials processing of complex components. From reverse engineering via automated beam path generation to short process development cycles.

Görgl, R.; Brandstätter, Elmar

doi:10.1088/1757-899x/119/1/012014

Cited by 2 publications

(4 citation statements)

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“…Laser processing has found wide application in many leading fields of industry, such as microelectronics, electrical engineering, aviation and mechanical engineering. In recent years, laser processing has played an increasingly significant role in improving product quality, labor productivity and production automation, as well as in reducing material consumption and environmental pollution [11,12]. The recent advances in laser technology are reflected in the research [2,13,14].…”

Section: Introductionmentioning

confidence: 99%

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

et al. 2023

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The possibility of using a two-pulse laser action consisting of a pulse of the free-running pulse followed by the Q-switched pulse in the processes of laser drilling in alumina ceramics is considered. A diagram of a laser machine for implementing the proposed processing method and the method for determining the energy required to form the through hole and the drilling time are presented. For thermal exposure, pulsed radiation of Nd:YAG of the laser operating in the free-running mode (pulse duration 0.5 ms, energy up to 0.3 J) was used. The Q-switched pulse was generated using a second Nd:YAG laser (pulse duration 25–30 ns, energy up to 0.03 J). The laser radiation was focused on the surface of the material at one point. The time between the start of generation of the first and second lasers varied in the range of 0–1000 μs. The optimal delay time for the start of the generation of the second laser relative to the first was determined experimentally. The obtained results showed that the combination of the free-running pulse and the Q-switched pulse can significantly increase the efficiency of laser machining of ceramics and improve the hole quality. This scheme turned out to be promising for optimizing parameters of the process of laser drilling in thin-sheet alumina ceramics. The obtained results obtained have great potential in the field of precision laser machining of ceramics.

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Section: Introductionmentioning

confidence: 99%

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

et al. 2023

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“…Its most important application is to repair high-value equipment, which can greatly save cost compared to buying another brand new, and, at the same time, the repaired work piece has at least the same performance to the original. Therefore, laser-cladding technology can be used in repairing the hard facing of turbine blade [2][3][4][5][6][7][8], forging die [9][10][11], as well as in various material processing industries for complex curved surface generating [12][13][14][15], and repairs of rail-surface scratch [16], artificial joints in medical treatment [17], broken gears [18], and worn sprockets [19].…”

Section: Introductionmentioning

confidence: 99%

“…die [9][10][11], as well as in various material processing industries for generating [12][13][14][15], and repairs of rail-surface scratch [16], artificia ment [17], broken gears [18], and worn sprockets [19].…”

Section: Introductionmentioning

confidence: 99%

“…It also realizes two main modules, i.e., inspection and repairing, defined by the proposed scheme. The best benefit of this work is that a feasible scheme to build up an integrated automatic platform for a laser-cladding system can be used as reference, by which a custom-made platform or additional functions according to his or her own tasks can be realized without being limited by commercial software [10,11,18]. This automatic system can be extended to laser-cladding repair for turbine, rail, and other objects, while it is necessary to add guide rails to move the robots and enhance processing capacity of point cloud data registration for the scanner, as the operating range increases.…”

Section: Introductionmentioning

confidence: 99%

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Development of Integrated Automatic System of Laser Cladding for Repairing of Polycrystalline Diamond Compact Bits

et al. 2023

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In order to improve the automatic level for laser-cladding repair of high value industrial equipment, such as polycrystalline diamond compact bit (PDC bit) applied in oil industry, a universal scheme of integrated automatic system for repairing is proposed in this paper, and the basic functional modules together with the executing order according to which each module runs are defined. There are two main technical points, i.e.,inspection and repairing, that need to be realized for such integrated automatic system. Therefore, according to the proposed scheme and the existing instruments, a dual-robot system, which includes two KUKA industrial robots, is adopted as the technological implementation, where one robot is used to carry a 3D scanner to reconstruct the PDC bit to realize inspection while the other is used to hold the laser to melt the special powder flowing to the damaged region of the bit to complete cladding. To realize automatic running of the whole integrated system, a hand-eye calibration method, namely three-point calibration, is then proposed, by which coordinates of point cloud of the damaged PDC bit detected by 3D scanner can be transformed to those of the coordinate system of the robot with the laser, so that the cladding path planned via cutting slice of the damaged region of the PDC bit in the upper computer software, the key of the integrated system developed by QT programming tool, can be tracked by laser head and then the damaged part of the PDC bit can be repaired. Finally, a laser-cladding experiment for repairing PDC bit is carried out and the feasibility of the proposed scheme of the integrated automatic system and the effectiveness of the dual-robot system implemented via KUKA robots are verified, According to existing literature, no papers about such integrated system for automatic laser cladding repair have been published.

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Laser materials processing of complex components. From reverse engineering via automated beam path generation to short process development cycles.

Cited by 2 publications

References 0 publications

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

Laser Drilling in Alumina Ceramics Using a Combination of Laser Pulses in the Free-Running and Q-Switched Modes

Development of Integrated Automatic System of Laser Cladding for Repairing of Polycrystalline Diamond Compact Bits

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