Article
Materials Science, Multidisciplinary
Yexin Fan, Zongwei Xu, Ying Song, Bing Dong, Zhifu Xue, Bing Liu, Lei Liu, Dongyu Tian
Summary: This study used molecular dynamic (MD) analysis to investigate the effect of different gallium ion implantation doses on 4H-SiC, analyzing lattice damage, hydrostatic stress, radial distribution function, and more. The results demonstrated that the combination of ion implantation-assisted and stress-assisted methods effectively decreased cutting force and stresses, improving the machining efficiency and machinability of 4H-SiC.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
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
Chemistry, Multidisciplinary
Jan Duplak, Darina Duplakova, Jozef Zajac
Summary: From a production perspective, understanding the cutting parameters for creating a component's new surface is crucial for comprehending its nature and properties. This information enables process improvement and minimizes flaws in machined surfaces. The article provides a comprehensive overview of material behavior and properties, focusing on predicting roughness based on cutting speed and depth, evaluating microhardness, assessing cutting tool wear, and examining chip shape and structure. Mathematical predictions are developed to determine surface quality changes at different cutting speeds. The fluctuating course of surface roughness and effects on chip characteristics and tool wear are identified. Notably, at 1400 m/min, surface roughness increased instead of decreasing, with the expected decrease observed only at 1800 m/min when material creep occurred.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Manufacturing
Zainul Huda
Summary: Dry machining is a popular method for environmentally-friendly operations. This research presents a novel technique to identify unknown grades of aluminum alloy and brass workpieces using dry turning experimentation and logic. The resulting cutting forces and power are comparatively analyzed.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
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
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, Mechanical
Hansong Ji, Qinghua Song, Yicong Du, Youle Zhao, Zhanqiang Liu
Summary: The micro-cutting process of crystalline materials is affected by the cutter edge size effect and microstructure effect, making it difficult to predict material deformation behavior, which in turn limits manufacturing efficiency and quality.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Automation & Control Systems
Delfim Joao, Otoniel Rangel, Nicolas Milliken, O. Remus Tutunea-Fatan, Evgueni Bordatchev
Summary: The development of micromachining technologies has been driven by the increase in convenience and value of products due to size and weight reduction. V-grooves have gained attention in micromachining due to their versatile use. This study introduces a new cutting strategy for V-grooves and compares its implementation with the commonly used strategy.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
John C. Miers, Tommy Tucker, Thomas Kurfess, Christopher Saldana
Summary: A novel framework for modeling the interaction between cutting teeth of an arbitrary end mill geometry and a workpiece was presented, using voxelized representation for workpiece geometry and ray casting approach. The model was validated by comparing predictions with experimentally measured milling forces and evaluated for its ability to describe interactive effects of sequential machining passes. Implications of the voxel-based model framework for predicting local surface finish and computational scalability of complex cutting configurations were briefly discussed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Weihao Ma, Jiahui Li, Xi Hou
Summary: Elastic emission machining (EEM) is an effective technology for obtaining ultra-smooth surfaces. By studying the interaction between the polishing wheel and slurry, as well as the atom removal mechanism, a rolling model is developed to analyze the energy transfer during the process. The study findings suggest that the energy required for atom removal is primarily supplied by the fluid, providing valuable insights for enhancing material removal rate.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Automation & Control Systems
Gang Zhao, Kang Cheng, Wei Wang, Yazui Liu, Zhihua Dan
Summary: The application of the STEP-NC standard advances the CNC machining industry towards integration and automation. A model-based cutting tool selection method is proposed, which considers energy consumption as an evaluation factor and uses genetic algorithms for optimization. Experimental tests on typical parts validate the effectiveness and feasibility of this method.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Yin Liu, Jiahao Chen, Xingwei Sun, Zhixu Dong, Heran Yang, Hongxun Zhao, Shibo Mu, Weifeng Zhang, Yadong Gong, Weijun Liu
Summary: This study investigates the machining mechanism of SiC ceramic materials through drilling and grinding simulations and experimental analysis. The results reveal the material removal mechanism and the effects of drilling parameters on cutting force, torque, and residual stress. It is found that the hard contact behavior of irregular abrasive grains significantly affects material removal, and drilling parameters have an impact on cutting force, torque, and residual stress.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Hui Shao, Qimeng Liu, Zhiwei Gao
Summary: This paper explores the use of circular saw disc cutting to cut special-shaped stone products during the rough processing stage. Geometrical methods are used to solve this problem, and an automatic cutting strategy and an optimization algorithm for the cutting path are proposed. Simulation results show that this method is more efficient than milling.
Article
Engineering, Electrical & Electronic
Xuefeng Yang, Xulin Cai, Wenan Yang, Youpeng You
Summary: A contour parallel tool path generation method for pocket machining is developed based on sound field synthesis theory. The method extracts the simplified medial axis tree of the pocket and obtains the final tool path through sound field synthesis. Experimental results demonstrate that the tool path obtained by the novel method has advantages in improving machining quality and efficiency.
Article
Automation & Control Systems
Huliang Ma, Yanqing Wang, Ming Lv, Shengqiang Yang
Summary: This paper presents the application of Wire EDM with contour approximation method (CAM-WEDM) in the machining of cylindrical parts with large removal volume. The basic principle of the contour approximation method is introduced, and the machining process is divided into roughing, semi-finishing, and finishing. Various indicators of polygon cutting are analyzed, and two methods for polygon cutting are proposed. Machining experiments are conducted to validate the effectiveness of CAM-WEDM in processing cylindrical parts with large removal volume.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)