Article
Chemistry, Analytical
Xiang Wu, Bin Fan, Qiang Xin, Qian Luo, Junming Shao, Guohan Gao, Peiqi Jiao
Summary: This article introduces a plasma figure correction method based on multiple distributed material removal functions, and analyzes its technological characteristics. Through this method, the form error of the quartz sub-mirror converges from an initial figure error of approximately 114 nm RMS to a figure error of approximately 28 nm RMS after seven iterations, demonstrating the practical potential of this method in optical element manufacturing.
Article
Automation & Control Systems
Chengyu Xu, Wanyi Zhang, Yun Zhang, Yongwei Zhu
Summary: Maintaining the stability of material removal function is crucial for deterministic material removal processing. This paper studied the stability of material removal function for polishing TC4 titanium alloy using a fixed abrasive tool. The authors introduced the concept of curve similarity and proposed relative peak variation and average profile variation as measures to quantify the change of material removal profile over time. Experimental results showed that the simulation material removal profile closely matched the experiment results, and the hardness of the elastic layer of the fixed abrasive tool affected the width and maximum removal depth of the material removal profile.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Automation & Control Systems
Minli Zheng, Yuexiu Liu, Wanying Nie, Shicheng Xu, Yuqi Bi
Summary: In this paper, a cutting force model for the variable pitch end mill is established, the dynamic characteristics of the machining system are analyzed, and the modal parameters and mode shapes of the tool and workpiece are determined. The vibration response of workpieces with different thicknesses is analyzed using dynamic system modeling simulations.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Irene Buj-Corral, Maurici Sivatte-Adroer
Summary: This study focuses on obtaining regression models for material removal rate and tool wear in rough honing processes. Experimental tests and multi-objective optimization were conducted. The results showed that the material removal rate is mainly influenced by tangential speed, grain size, and pressure, while tool wear is directly influenced by the density of abrasive, pressure, tangential speed, and grain size.
Article
Thermodynamics
Yuanhui Zhang, Wei Cai, Yan He, Tao Peng, Shun Jia, Kee-hung Lai, Li Li
Summary: This study proposes a concept of forward-and-reverse multidirectional turning (MDT) and the MDT approach to address the issues of high energy consumption and low utilization rate in conventional turning. The research shows that MDT can significantly improve processing efficiency and surface quality while reducing energy consumption. Additionally, MDT has better control ability of chip removal, benefiting the processing stability.
Article
Computer Science, Software Engineering
Zirui Wang, Shibo Liu, Ligang Liu, Qiang Zou, Xiao-Ming Fu
Summary: We propose a novel method for computing smooth preferred feed direction fields with high material removal rates for five-axis machining. Our method is based on three new facts about local maximum feed directions and provides a practical approach to generate desired fields for surfaces with smooth normal directions. The preferred feed direction fields are then utilized to generate tool paths with higher efficiency compared to state-of-the-art methods.
COMPUTER-AIDED DESIGN
(2023)
Article
Green & Sustainable Science & Technology
Zejia Zhao, Tengfei Yin, Suet To, Zhiwei Zhu, Zhuoxuan Zhuang
Summary: This paper investigates the evolution of material removal energy in ultraprecision machining and finds that the total material removal energy decreases with increasing feedrate, but the maximum material removal energy increases. The study also discusses the differences in material removal energy in different regions and the formation mechanism and effects of cleavage fracture.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Materials Science, Multidisciplinary
Sinan Donmez, Sermet Demir, Pasa Yayla
Summary: High-intensity electrical discharges are utilized in electrical discharge machining (EDM) to machine metals. Carbon nanotubes (CNTs) have also been explored in EDM. This study focuses on the use of pristine CNT yarn (CNTY) as an EDM tool. The feasibility is assessed through characterization and material removal experiments, and the results show significant material removal and extended tool life.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Automation & Control Systems
Jiqiang Wang, Yuzhang Wang, Yongda Yan, Yanquan Geng
Summary: In this study, large-scale periodic nanostructures were fabricated using a multi-tip diamond tool on a homemade four-axis micro-machine tool. A theoretical model was established to investigate the relationship between cutting force and machined depth, and TEM was used to analyze the subsurface characteristics. The findings are significant for machining high-quality periodic nanostructures for optical applications.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Zhijie Cui, Yingdong Liang, Xin Chen, Fanwei Meng, Zixuan Wang, Tianbiao Yu, Ji Zhao
Summary: This study established a model for the material removal of ultrasonic vibration-assisted polishing (UVAP) for tilted column optical elements. The pressure distribution and velocity distribution in the contact zone were modeled using experiments and geometric analysis. A series of orthogonal experiments were conducted, with the coefficient of determination above 0.9 after fitting the actual profile to the predicted profile. ANOVA analysis showed that the maximum removal depth had a prediction error of less than 13.12% and the material removal rate (MRR) had an error of less than 9.24%. Power spectral density (PSD) analysis revealed that the introduction of ultrasonic amplitude effectively suppressed medium and high-frequency errors on the machined surface. This novel model can be used for optimizing machining parameters and providing theoretical support for complex parts polishing.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Tieyu Zhu, Mingsheng Jin, Xiaoxing Dong, Qichao Zheng, Minglei Jin, Yan Li
Summary: A novel fixed abrasive petal-shaped lapping tool is proposed to achieve material removal uniformity through finite element method (FEM) and mathematical analysis. The cross-sectional profile of the tool is revealed based on numerical analysis of the stress distribution on the elastomer tools in contact with the workpiece. Experimental studies on K9 glass plane workpieces demonstrate the characteristic of surface quality evolution and material removal uniformity. The results show a significant improvement in material removal uniformity and surface roughness.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Engineering, Mechanical
Madiha Rafaqat, Nadeem Ahmad Mufti, Muhammad Qaiser Saleem, Naveed Ahmed, Amjad Hussain
Summary: EDM die-sinking is an important process in die and mold manufacturing, but it has limitations in material removal rate and tool wear. This research introduces new tool designs to improve the performance of EDM. Non-circular holes commonly used in mold industry are selected as machining profiles. The results show that the material removal rate can be significantly improved and machining accuracies can be enhanced with the introduced tool designs.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Goran Jovicic, Aleksandar Milosevic, Zeljko Kanovic, Mario Sokac, Goran Simunovic, Borislav Savkovic, Djordje Vukelic
Summary: This study investigated dry turning of Inconel 601 alloy using PVD-coated cutting inserts in a dry environment. Various turning input parameters, including cutting speeds, feeds, insert shapes, corner radii, rake angles, and approach angles, were tested. Measurements of arithmetic mean surface roughness (Ra), flank wear (VB), and material removal rate (MRR) were taken to determine the effects of the input parameters. An artificial neural network (ANN) was used to model the turning process, and a genetic algorithm (GA) was employed to optimize the process parameters. The accuracy of the model and optimized values were validated through confirmation experiments, with maximum percentage errors of less than 2%, indicating the practical implementation potential of the hybrid approach.
Article
Automation & Control Systems
Changlin Liu, Jianning Chu, Jianguo Zhang, Junjie Zhang, Xiao Chen, Junfeng Xiao, Jianfeng Xu
Summary: With a decrease in tool rake angle, the material removal mechanism shifts from shear to extrusion, and ultimately no material is removed. The transition from shear to extrusion is greatly influenced by the tool rake angle and workpiece crystal orientation, while the transition from extrusion to no removal is mainly affected by the position of the stagnation region and frictional force on the tool rake face.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Optics
Chenchun Shi, Chunjin Wang, Chi Fai Cheung, Zili Zhang, Ze Li, Lai Ting Ho, Weijie Deng, Xuejun Zhang
Summary: High-quality optical surfaces are widely used in high-tech industries for their excellent performances. This paper focuses on the material removal mechanism and curvature effect in ultra-precision polishing and successfully develops a material removal model based on curvature effect. Experimental results verify the effectiveness of the model and identify two nonuniform material removal phenomena. The study also indicates that contact pressure is more sensitive to curvature effect.
Article
Optics
Zhichao Dong, Haobo Cheng, Hon-Yuen Tam
Article
Optics
Zhichao Dong, Haobo Cheng, Hon-Yuen Tam
Article
Optics
Yunpeng Feng, Haobo Cheng, Tan Wang, Zhichao Dong, Hon-Yuen Tam
Article
Optics
Zhichao Dong, Haobo Cheng, Xu Ye, Hon-Yuen Tam
Article
Optics
Zhichao Dong, Haobo Cheng, Hon-Yuen Tam
Article
Optics
Zhichao Dong, Haobo Cheng, Xu Ye, Hon-Yuen Tam
Article
Optics
Tan Wang, Haobo Cheng, Yong Chen, Honyuen Tam
Article
Automation & Control Systems
Wei Guo, Hon-Yuen Tam
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2014)
Article
Optics
Haobo Cheng, Zhichao Dong, Xu Ye, Hon-Yuen Tam
Article
Engineering, Electrical & Electronic
Haobo Cheng, Jingshi Su, Yong Chen, Hon-Yuen Tam
FRONTIERS OF OPTOELECTRONICS
(2015)
Article
Optics
Haobo Cheng, Chunyun Xu, Xiaoli Jing, Hon-Yuen Tam
Article
Optics
Tan Wang, Haobo Cheng, Hao Yang, Wentao Wu, Honyuen Tam
Article
Optics
Zhichao Dong, Haobo Cheng, Yunpeng Feng, Jingshi Su, Hengyu Wu, Hon-Yuen Tam
Article
Optics
Tan Wang, Haobo Cheng, Honyuen Tam
Article
Engineering, Electrical & Electronic
Yang Liu, Haobo Cheng, Zhichao Dong, Hon-Yuen Tam
FRONTIERS OF OPTOELECTRONICS
(2014)