Laser-assisted Machining of Zirconia Ceramics using a Diamond Bur

Kizaki, Toru; Ito, Yusuke; Tanabe, Shota; Kim, Yangjin; Sugita, Naohiko; Mitsuishi, Mamoru

doi:10.1016/j.procir.2016.02.239

Cited by 47 publications

(15 citation statements)

References 5 publications

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“…Figure 1 shows a schematic diagram of curved shape machining using laser assisted machining. Kizaki et al [8] studied laser-assisted machining of zirconia ceramics using a diamond bur. Grinding experiments were conducted to assess the effectiveness of the laser assisted machining.…”

Section: Of 15mentioning

confidence: 99%

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

Kim

Lee

2018

Metals

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Difficult-to-cut materials are being increasingly used in many industries because of their superior properties, including high corrosion resistance, heat resistance and specific strength. However, these same properties make the materials difficult to machine using conventional machining techniques. Laser-assisted milling (LAM) is one of the effective method for machining difficult-to-cut materials. In laser-assisted milling, the machining occur after the workpiece is locally preheated using a laser heat source. Laser-assisted milling has been studied by many researchers on flat workpiece or micro end-milling. However, there is no research on the curved shape using laser assisted milling. This study investigated the use of laser-assisted milling to machine a three-dimensional curved shape workpiece based on NURBS (Non-uniform rational b-spline). A machining experiment was performed on Inconel 718 using different tool paths (ramping, contouring) under various machining conditions. Finite elements analysis was conducted to determine the depth of cut. Cutting force, specific cutting energy and surface roughness characteristics were measured, analyzed and compared for conventional and LAM machining. LAM significantly improved these machining characteristics, compared to conventional machining. There results can be applied to the laser-assisted milling of various three-dimensional shapes.

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Section: Of 15mentioning

confidence: 99%

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

Kim

Lee

2018

Metals

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“…The root cause is that machining is done in the brittle region, not in the plastic region. Extensive experiments conducted on various ceramics, such as Si 3 N 4 [3][4][5][6][7][8][9], aluminum oxide (Al 2 O 3 ) [10,11], zirconia (ZrO 2 ) [12], and other ceramic composite materials [13][14][15][16][17], have proven that laser-assisted machining (LAM) is an effective method to solve the above problems. The high-power laser beam focused on the surface of the ceramic material can heat the material to a very high temperature in a short time before the material is cut, soften the material, reduce the yield strength to below the fracture strength, and then change the cutting performance of the material.…”

Section: Introductionmentioning

confidence: 99%

A Study on Work Hardening in the Laser-Assisted Machining of Si3N4 Ceramics under Different Material Removal Modes

Zhao

et al. 2020

Metals

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In order to understand the work hardening phenomenon and mechanism of laser-assisted machining (LAM) of Si3N4 ceramics, the work hardening degree of LAM Si3N4 under different material removal modes was studied. Two sets of single-factor experiments were performed in which the laser power and the cutting depth were changed respectively. The results show that work hardening is the result of the combination of heat and cutting deformation during cutting. The work hardening degree decreases with the increase of material softening degree. When the material is removed plastically, the work hardening degree is 110–115%.

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“…According to the existing literature, investigations on the wear of diamond tools during the machining of engineering ceramics are mainly focused on the abrasive machining of diamond grinding wheels and diamond burs. Kizaki et al [12] proposed the laser-assisted machining of zirconia ceramics using diamond burs. e results revealed that the grinding force and the tool damage could be reduced in the assisted processes.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the Wear Rate of Sintering Diamond Core Bit during the Hole Drilling Process of Al₂O₃ Bulletproof Ceramics

Liu

Zhang

Dong

et al. 2018

Advances in Materials Science and Engineering

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Bulletproof ceramics are usually hard and brittle with high elastic modulus, high compressive strength, and low tensile strength. While machining bulletproof ceramics, severe tool wear makes it difficult to obtain desired machining quality and efficiency, especially in hole drilling. In this work, an intensive experimental study on the overall wear rate of the sintering diamond thin-wall core bit during the hole drilling of Al2O3 bulletproof ceramics (99 wt.%) has been carried out. The quality loss of the bit after each hole drilled was selected for representing the overall wear rate of the bit. Based on experimental data, the influences of the main bit performance and machining process parameters on the overall wear rate of the bit have been analyzed. According to the results discussed, under the test conditions, finer diamond grit, higher diamond concentration, lower number of water gaps, thinner wall thickness, or lower bit load all can decrease the wear rate of the bit. However, within a certain range, the spindle speed has little influence on the overall wear resistance of the bit, but when the spindle speed increases, the machining efficiency can be significantly improved. The results obtained in this work can offer a valuable reference for the use of sintering diamond thin-wall core bits in the hole drilling of bulletproof ceramics.

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Laser-assisted Machining of Zirconia Ceramics using a Diamond Bur

Cited by 47 publications

References 5 publications

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

A Study on Work Hardening in the Laser-Assisted Machining of Si3N4 Ceramics under Different Material Removal Modes

Investigations on the Wear Rate of Sintering Diamond Core Bit during the Hole Drilling Process of Al₂O₃ Bulletproof Ceramics

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Laser-assisted Machining of Zirconia Ceramics using a Diamond Bur

Cited by 47 publications

References 5 publications

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

A Study on the Machining Characteristics of Curved Workpiece Using Laser-Assisted Milling with Different Tool Paths in Inconel 718

A Study on Work Hardening in the Laser-Assisted Machining of Si3N4 Ceramics under Different Material Removal Modes

Investigations on the Wear Rate of Sintering Diamond Core Bit during the Hole Drilling Process of Al2O3 Bulletproof Ceramics

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Investigations on the Wear Rate of Sintering Diamond Core Bit during the Hole Drilling Process of Al₂O₃ Bulletproof Ceramics