Article
Engineering, Multidisciplinary
Qi Li, Xiaodong Yang
Summary: A novel three-dimensional thermo-hydraulic coupling model was developed to simulate surface formation in electrical discharge machining (EDM). The model considered the melt flow induced surface deformation, temperature-dependent material properties, phase changes, and practical forces on melt pools. Simulation results demonstrated the radial melt flow during single-pulse discharge and the formation of surface peaks during multiple discharges. The proposed model provided accurate measurements of crater diameter, surface roughness, and recast layer thickness.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Automation & Control Systems
Hongwei Pan, Zhidong Liu, Mingbo Qiu, Ming Zhang, Cong Deng
Summary: A concept of multichannel discharge WEDM under semiconductor characteristics was proposed to meet the increasing demand for wire electrical discharge machining (WEDM) under extreme conditions. Experiments on high-efficiency machining with multichannel discharge showed that it can achieve high machining efficiency, enhanced surface quality, and lower wear of electrode wire. The proposed multichannel discharge WEDM sets up the foundation for the establishment of the theoretical system of EDM under semiconductor characteristics.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Review
Automation & Control Systems
Noor Dzulaikha Daud, Md. Nazibul Hasan, Tanveer Saleh, Pei Ling Leow, Mohamed Sultan Mohamed Ali
Summary: This paper discusses the development and application of silicon micromachining techniques, and compares the capabilities and competencies of various non-traditional silicon micromachining techniques. The working principles, advantages, limitations, and previously fabricated silicon microstructures are discussed in detail. The study also summarizes the performance reported by multiple researchers on these micromachining methods.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shuliang Dong, Hongchao Ji, Jian Zhou, Xianzhun Li, Lan Ding, Zhenlong Wang
Summary: Micro-liquid floated gyroscopes are widely used in military applications. However, the machining of micro-ball sockets in beryllium copper alloy is challenging due to its excellent properties. In this study, we developed a method for milling micro-ball sockets in C17200 beryllium copper alloy using micro-electrical discharge machining, achieving high precision by optimizing the machining parameters. This method provides a new way to fabricate micro-ball sockets in C17200 with high efficiency for micro-liquid floated gyroscopes.
Article
Engineering, Manufacturing
Katerina Mouralova, Libor Benes, Tomas Prokes, Josef Bednar, Radim Zahradnicek, Jiri Fries
Summary: Wire electrical discharge machining (WEDM) is an essential unconventional machining technology in various industries. This study investigated the effect of material thickness on the cutting speed, morphology, and topography of Ampcoloy 35 material. The results revealed interesting findings that shed light on the relationship between material thickness and machined surface quality.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2022)
Article
Chemistry, Multidisciplinary
J. Rajesh, Giridharan Abimannan
Summary: This study analyzes the impact of suspending molybdenum di-sulphide powder particles of two distinct mean sizes into the dielectric of electrical discharge machining, focusing on parameters such as crater geometry, surface crack density, skewness, kurtosis, and chemical alteration of machined surfaces.
Article
Chemistry, Analytical
Weijing Kong, Ziyu Liu, Rudong Zhang, Yongbin Zeng
Summary: With the development of MEMS, there is an increasing demand for machining difficult-to-machine metal micro parts. Microelectric discharge machining is effective but causes recast layers. In this study, we propose wire electrochemical discharge micro-machining (WECDMM) with a new electrolyte system to remove recast layers. We optimize the electrolyte and analyze the effects of process parameters on machining quality.
Article
Chemistry, Physical
Ponnambalam Balamurugan, Marimuthu Uthayakumar, Manickaraj Pethuraj, Dariusz Mierzwinski, Kinga Korniejenko, Mohd Shukry Abdul Majid
Summary: In this study, composites made with different fly ash contents were used as electrode tools for EDM. It was found that increasing the fly ash content could enhance the material removal rate but had a negative impact on the tool. As the fly ash content increased, the composite lost its heat transfer ability, leading to a higher temperature at the electrode interface and increased electrode wear.
Review
Materials Science, Multidisciplinary
Xuyang Zhu, Guangxian Li, John Mo, Songlin Ding
Summary: This paper reviewed the state-of-the-art technologies applied in machining semiconductors, summarized the advantages and disadvantages of each method, introduced the latest research outcomes, and discussed the future development trend.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
Himanshu Singh, Rajanish Chandra, Prateek Saxena, Yogesh M. Puri
Summary: This study addresses the challenges of machining high-strength alloys like EN19 steel by investigating the use of cryogenically cooled electrode materials in electric discharge machining (EDM). Through experimental data and simulation results, it is demonstrated that cryogenic treatment of copper electrodes significantly improves material removal rates, reduces electrode wear rates and surface roughness, thereby enhancing machining efficiency and electrode longevity.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Leeba Varghese, Manesh Kailathuvalappil Kochunny, Jerin George
Summary: Micro-EDM is a non-traditional manufacturing technique that uses plasma heat energy for material removal. Optical Emission Spectroscopy is employed to calculate the plasma temperature. Mathematical modeling and analysis of plasma properties and material removal were conducted in a hybrid micro EDM process, revealing the significant impact of electrical parameters and the vital role of vibrational parameters in surface features enhancement.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Ata Ur Rehman, Waseem Arif, Muhammad Imtiaz Hussain, Sajjad Miran, Salman Hussain, Gwi Hyun Lee
Summary: Electric discharge machining with a powder mix dielectric is a promising technique to harden a work piece's surface. The size and concentration of graphite powder, as well as the electrical parameters, significantly influence the surface quality.
Article
Automation & Control Systems
Xue Bai, Xi-Peng Gong, Ting-Yi Yang, Li Li
Summary: Sintered NdFeB is widely used due to its excellent magnetic properties, but its high hardness and brittleness limit its application. In this study, the sintered NdFeB was processed by electrical discharge machining milling (EDM-M) using deionized water as the dielectric medium to improve its machining properties. Comparative experiments were conducted to study the machining properties by changing the current set value. The influences of current on the material removal mechanism and surface formation mechanism were analyzed using SEM, and the characteristic of surface micro-morphology influenced by current was also analyzed. Cross-section analysis of the sintered NdFeB by DEDM-M was conducted using SEM combined with EDS. The results showed that the machining parameters of DEDM-M had a wide range, and the surface roughness was lowest under low current set value. The MRR, SR, and TWR variations were regular, indicating good controllability. Regression equations for the machining properties were obtained, and the analysis of variance was good. SEM analysis of the machined surface revealed that material removal and surface formation in DEDM-M were influenced by fusion and stress. The change of current led to differences in surface micro-morphology and affected MRR and SR. Cross-section analysis showed four categories of materials from the surface to the matrix.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Physics, Applied
Nguyen Tien Dung
Summary: This paper presents a model for producing nano-microparticles using ultrasound-aided electric discharge. The shape and size of nickel particles were checked using scanning electron microscopy (SEM) and found to be distributed in a range of a few micrometers to 80 μm. The nickel particles were regular spherical shaped with different grain sizes. Additionally, there were many small particles attached to the surface. Various methods were employed to determine the hollow nickel particles such as very thin particles, large thickness grains, hollow sponge-like structures, and solid particles through inlay polishing, nitric acid etching, and direct SEM imaging.
MODERN PHYSICS LETTERS B
(2023)
Article
Microscopy
Bassam G. Rasheed, Mohammed A. Ibrahem
Summary: This study investigates the formation of micro/nanostructured layers on silicon wafers of various conductivity types, highlighting the crucial role of lasers in stimulating etching reactions and controlling silicon surface structures in photochemical and photoelectrochemical etching processes. Different nanostructures were synthesized by photochemical etching using lasers of varying wavelengths, with optimal porosity achieved for different types of silicon. Thermal distribution profiles show a rise in surface temperature up to 2000 degrees Celsius when short laser pulses of high energy are used, as estimated by COMSOL multiphysics software.
Article
Engineering, Industrial
Tatsuaki Furumoto, Kyota Egashira, Kenta Munekage, Satoshi Abe
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2018)
Article
Engineering, Multidisciplinary
Yohei Hashimoto, Tomoya Sano, Tatsuaki Furumoto, Akira Hosokawa
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2019)
Article
Engineering, Industrial
Tatsuaki Furumoto, Kazushi Oishi, Satoshi Abe, Kotaro Tsubouchi, Mitsugu Yamaguchi, Adam T. Clare
Summary: This study investigates the dynamic temperature behavior around a melt pool in metal-based powder bed fusion using a laser beam. The temperature distribution of the melt pool is influenced by morphological changes of the metal powder, causing asymmetric temperature distribution. Factors such as droplet cohesion, remaining heat energy, and heat conduction inside the melt pool play significant roles.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Industrial
Tatsuaki Furumoto, Ryuya Saito, Kota Watanabe, Yuzo Ochi, Yohei Hashimoto, Mitsugu Yamaguchi, Tomohiro Koyano, Akira Hosokawa
Summary: This study is the first attempt to apply thermal stress cleavage to a single-crystal round sapphire bar using a CO2 laser and a V-shaped groove to achieve complete separation of the round surface. The research found that the fabricated sharp V-shaped groove and high aspect ratio of the groove can improve the quality of the cleaved surface, while the direction of crack propagation can be controlled through the morphology of the groove.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Yohei Hashimoto, Ryo Ozaki, Tatsuaki Furumoto, Akira Hosokawa
Summary: A novel measurement method for torque on the upper platen in a three-way double-sided machine was proposed in this study, which successfully measured torques in double-sided lapping experiments. The friction coefficient between the workpiece and upper pad was accurately identified by the proposed method and verified by comparison with single-sided lapping experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
Yohei Hashimoto, Ryo Ozaki, Tatsuaki Furumoto, Akira Hosokawa
Summary: In this study, a calculation method for workpiece profile variation during double-sided lapping was developed using FEM deformation and contact pressure distribution. The method was found to be valuable in terms of applicable process and calculation time. It was suggested that modifying the load applied to the workpiece can help improve the bow shape of the workpiece.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Engineering, Multidisciplinary
Yohei Hashimoto, Yugo Nakayama, Tatsuaki Furumoto, Akira Hosokawa
Summary: The study showed that using a cover plate in gyro finishing process can significantly improve the finishing efficiency and surface quality of the workpiece. Through analyzing the force and comparing surface roughness variation, it was concluded that the use of a cover plate can double the finishing efficiency of the workpiece surface.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2022)
Article
Engineering, Industrial
Mitsugu Yamaguchi, Kotaro Kushima, Yushi Ono, Tomohiro Sugai, Tomohiro Oyama, Tatsuaki Furumoto
Summary: This study investigated the influence of oxygen concentration and humidity on the building aspects of titanium alloy powder in a laser power bed fusion system. It found that controlling humidity in the building chamber is more important than controlling oxygen concentration to prevent oxidation. Low oxygen concentration and humidity resulted in high circularity and narrow size distribution of spatter particles. High oxygen concentration and humidity caused defects in the built part due to changes in Marangoni convection. Maintaining oxygen and humidity levels below 10 ppm is crucial for building chambers.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Automation & Control Systems
Akira Hosokawa, Ryosuke Shimizu, Takahiro Kiwata, Tomohiro Koyano, Tatsuaki Furumoto, Yohei Hashimoto
INTERNATIONAL JOURNAL OF AUTOMATION TECHNOLOGY
(2019)
Article
Engineering, Manufacturing
Yohei Hashimoto, Tomoya Sano, Tatsuaki Furumoto, Akira Hosokawa
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2019)
Article
Automation & Control Systems
Kyota Egashira, Tatsuaki Furumoto, Kiichi Hishida, Satoshi Abe, Tomohiro Koyano, Yohei Hashimoto, Akira Hosokawa
INTERNATIONAL JOURNAL OF AUTOMATION TECHNOLOGY
(2019)
Article
Engineering, Manufacturing
Akira Hosokawa, Haruki Yoshimatsu, Tomohiro Koyano, Tatsuaki Furumoto, Yohei Hashimoto
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2018)
Article
Engineering, Manufacturing
Tomohiro Koyano, Akira Hosokawa, Tatsuaki Furumoto
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
(2018)
Proceedings Paper
Engineering, Manufacturing
A. S. Jamaludin, A. Hosokawa, T. Furumoto, T. Koyano, Y. Hashimoto
4TH ASIA PACIFIC CONFERENCE ON MANUFACTURING SYSTEMS AND THE 3RD INTERNATIONAL MANUFACTURING ENGINEERING CONFERENCE
(2018)
Article
Engineering, Multidisciplinary
Junichi Kouguchi, Hayato Yoshioka
Summary: A new monitoring method for milling process using signal analysis of acceleration sensors is proposed in this research, which can solve the difficulty in estimating cutting forces for small diameter tools.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Weijie Wang, Yanling Tian, Zhao Zhang, Zhilai Lu, Fujun Wang, Dawei Zhang
Summary: This paper proposes a comprehensive model for predicting the cutting depth and contact area in nanoscratching. The model takes into account the geometric shape of the indenter and elastic recovery, reducing prediction errors. The study also analyzes the influence of the indenter geometry on the contact area, with the face angle of the pyramid identified as a key factor.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Qiaolin Li, Yuki Shimizu, Xiaohao Wang, Xinghui Li, Wei Gao
Summary: This paper introduces a stitching linear scan method for roundness and diameter measurement of small cylinders, using a ruby ball stylus as hardware filtering to eliminate the influence of high-frequency data. Experimental results show that the repeatability of the ruby ball stylus is better than the diamond stylus.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Chaturaporn Kerdkaew, Surasak Kaewpho, Sakchai Chomkokard, Theera Yaemglin, Ittipon Cheowanish, Noparit Jinuntuya, Wiwat Wongkokua
Summary: A new calibration standard for a CMOS-based autocollimator using an optical angle generator with a submillimeter strip reflector (OAG-SSR) is proposed. This method provides angular values along the measuring range of the autocollimator without any mechanical movement, enabling a faster calibration process, which is suitable for integration with production lines.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Haohao Tao, Tongjie Li, Feng Chen, Jinwei Fan, Ri Pan
Summary: In this paper, a novel OTA method is proposed that considers the relationship between tolerance of machine tools' key parts and volumetric error. A volumetric error prediction model is established based on the bridge between geometric error and tolerance. Additionally, a Processing Simplicity Index (PSI) is introduced to replace manufacturing cost and a tolerance-PSI model is established. An OTA model is formulated to minimize volumetric error and maximize PSI. The feasibility and effectiveness of the method are validated through simulations and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Xiumin Zhang, Jianhua Liu, Huanxiong Xia, Xiaohui Ao, Jiechen Zhou, Zhihao Fu
Summary: A comprehensive finite-element model was developed in this paper to study the evolution of surface figure in high-precision bonded mirrors. The cure kinetics and mechanical behaviors of the optical adhesive were experimentally examined and modeled, and the effects of environmental factors on the surface-figure accuracy and stability were further investigated.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Peng Wang, Bin Chen, Jian Li, Jianwei Wang, Yingjie Zhang, Kai Feng
Summary: This paper proposes an aerostatic bearing with damper modules to suppress vibration on the bearing surface. The stiffness and damping characteristics can be adjusted by changing the thickness of the sheets, resulting in effective vibration suppression.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Yang, Xiaoguang Guo, Renke Kang, Xianglong Zhu, Yufan Jia, Hao Wang
Summary: This paper develops an analytical model that takes into account the pad surface morphology to predict the evolution of the workpiece surface shape. The model considers the cross-scale relationship between the formation of lapped surface shape and the scratching process of a single abrasive grain. The simulated and experimental results validate the correctness and validity of the model, providing new ideas for controlling the workpiece surface.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Gabriele Piscopo, Alessandro Salmi, Eleonora Atzeni
Summary: This paper proposes an artifact for the LP-DED process and evaluates its dimensional accuracy and geometrical tolerances. The findings show that the tolerances of the LP-DED process are comparable to sand casting, lower than LB-PBF technologies, but similar to EB-PBF technologies.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Liang Xue, Ningsong Qu
Summary: This study focuses on the key issues of improving material removal rate and surface quality in macro-electrolyte jet machining. By introducing a novel tool with the rear-end tilted, the current density of the workpiece surface can be increased, leading to improved machining performance. Experimental results show that the tool with a rear-end tilt angle of 15 degrees significantly enhances the material removal rate and reduces surface roughness compared to the standard tool.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Ping Yang, Kaixin Luo, Runxi Wu
Summary: This article proposes a new calibration device to measure the spatial errors of a six-axis serial robot. The device compensates for errors by modifying angles and identifying stiffness parameters, and experiments verify its effectiveness.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Shilei Wu, Mingxiang Ling, Yingbin Wang, Tao Huang
Summary: This paper studies the electromechanical behavior of elliptical APAs by analyzing the multi-domain dynamics of piezoelectric stacks and compliant mechanisms using a novel electro-mechanical transfer matrix method. An analytical electro-elasto transfer matrix of piezoelectric stacks operating at the d33 mode is derived in the form of Taylor's series. The dynamic response spectrum of displacement and impedance for elliptical APAs is accurately captured by this electro-mechanical model, and different topologies of elliptical APAs are compared to suggest the optimal configuration.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Lei Meng, Yusheng Liu, Ying Yan, Dongming Guo, Ping Zhou
Summary: This study explores electrochemically induced chemical etching (ECICE) as a method to achieve nanogram-level, low-cost, stress-free, and stable material removal of fused quartz. The key factors affecting removal minimum and stability are revealed through modeling analysis and testing. A proposed method achieves precision stable removal with satisfactory results at the nanogram level.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Hong Yao, Hai Bi, Junjie Wei, Shuo Zhan, Fangxin Chen, IEEE
Summary: This paper presents a dual-loop control syringe-based picoliter-scale injection system for high-precision microinjection. The system utilizes an inner pneumatic servo loop and an outer position servo loop to achieve precise control. The experimental results demonstrate that the system can regulate the smallest droplet size to within 0.25 pL.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)
Article
Engineering, Multidisciplinary
Jinchun Yuan, Jiasheng Li, Ye Ding
Summary: In this paper, a simple and effective internal model control (IMC) system is proposed to attenuate thrust ripples in ultraprecision air-bearing linear feed systems, based on a modified modeling and identification method of permanent magnet linear synchronous motors (PMLSMs). The performance of the proposed method in overcoming nonlinearity and achieving smooth velocities in steady states is demonstrated through analysis and experiments.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2024)