Water assisted pulsed laser machining of micro-structured surface on CVD diamond coating tools

Guo, Bing; Zhang, Jun; Wu, Mingtao; Zhao, Qingliang; Liu, Han; Monier, Amr; Jin-hu, Wang

doi:10.1016/j.jmapro.2020.04.066

Cited by 39 publications

(10 citation statements)

References 37 publications

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“…Throughout the designed precision grinding processes, surface microstructures were machined to investigate the effects of the grinding parameters experimentally and to analyse the accuracy of the presented strategy. First, using the laser structuring method explained in our earlier paper, 26 a D15 fine-grained resin bond diamond wheel was grooved and adjusted to perform the grinding operations (see Figure 8). Subsequently, the grooved wheel was installed on an electric spindle, as shown in Figure 9, and the assembly was mounted on a precision machine tool.…”

Section: Methodsmentioning

confidence: 99%

Effects of the grinding conditions on geometry of microstructured surfaces fabricated via designed precision grinding

Monier

Guo

Zhao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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Precision grinding is a promising method for machining microstructured surfaces. Controlling microstructured surface geometries provides interesting insights into the optimisation of their usage based on the application fields. This requires an understanding of the effects of the factors influencing the grinding process. The effects of the designed process parameters on the geometries of microstructured surfaces machined using precision grinding is investigated herein. The investigated parameters include the velocity ratio between the workpiece feed rate and wheel cutting velocity, in addition to the grinding depth of cut. First, a mathematical model is developed to correlate the designed grinding parameters and the resultant geometry of the ground microstructured surfaces; furthermore, the geometrical parameters of the surface microstructures are defined. Subsequently, an algorithm and a simulation method are used to illustrate the change in the microstructure geometries with varying operating parameters. Subsequently, precision grinding experiments under various conditions are performed on the surfaces of TC4 titanium alloys for experimental investigations. The obtained microstructure geometries are analysed and compared with those predicted via simulation. The results confirmed the accuracy and ability of proposed strategy in designing and machining the microstructured surfaces with controlled geometry via precision grinding. Finally, the behaviour of the geometrical parameters of the microstructured surfaces based on the investigated operating parameters is discussed.

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Section: Methodsmentioning

confidence: 99%

Effects of the grinding conditions on geometry of microstructured surfaces fabricated via designed precision grinding

Monier

Guo

Zhao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…17 shows the laser machining unit and schematic of the laser structuring operation of the grinding wheels. A detailed explanation of the laser structuring process can be found in [29]. The grinding experiments for structuring were then performed on surfaces of Titanium specimens of the TC4 alloy using each wheel design.…”

Section: Experimental Workmentioning

confidence: 99%

The effects of structured grinding wheel designed parameters on the geometries of ground structured surfaces

Monier

Guo

Zhao

et al. 2022

Int J Adv Manuf Technol

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“…To address this, we propose a femtosecond laser 3D nanosculpturing technique based on a novel direct-write ablation strategy that relies on the laser cavitation dynamics at the solidliquid ablation interface to clean up debris in real time as well as backside tight focusing to avoid surface scattering. The accuracy and 3D manufacturing capability of the existing liquid-assisted ablation methods are not satisfactory, [28][29][30] because the unstable factors at the microscale have not been completely avoided. The proposed method enables true point-by-point stable 3D material removal for high-precision 3D subtractive fabrication.…”

Section: Introductionmentioning

confidence: 99%

Laser‐Induced Cavitation‐Assisted True 3D Nano‐Sculpturing of Hard Materials

Hua

Ren

Huang

et al. 2023

Small

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Femtosecond lasers enable flexible and thermal‐damage‐free ablation of solid materials and are expected to play a critical role in high‐precision cutting, drilling, and shaping of electronic chips, display panels, and industrial parts. Although the potential applications are theoretically predicted, true 3D nano‐sculpturing of solids such as glasses and crystals, has not yet been demonstrated, owing to the technical challenge of negative cumulative effects of surface changes and debris accumulation on the delivery of laser pulses and subsequent material removal during direct‐write ablation. Here, a femtosecond laser‐induced cavitation‐assisted true 3D nano‐sculpturing technique based on the ingenious combination of cavitation dynamics and backside ablation is proposed to achieve stable clear‐field point‐by‐point material removal in real time for precise 3D subtractive fabrication on various difficult‐to‐process materials. As a result, 3D devices including free‐form silica lenses, micro‐statue with vivid facial features, and rotatable sapphire micro‐mechanical turbine, all with surface roughness less than 10 nm are readily produced. The true 3D processing capability can immediately enable novel structural and functional micro‐nano optics and non‐silicon micro‐electro‐mechanical systems based on various hard solids.

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Water assisted pulsed laser machining of micro-structured surface on CVD diamond coating tools

Cited by 39 publications

References 37 publications

Effects of the grinding conditions on geometry of microstructured surfaces fabricated via designed precision grinding

Effects of the grinding conditions on geometry of microstructured surfaces fabricated via designed precision grinding

The effects of structured grinding wheel designed parameters on the geometries of ground structured surfaces

Laser‐Induced Cavitation‐Assisted True 3D Nano‐Sculpturing of Hard Materials

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