Article
Automation & Control Systems
Meng Li, Xianglong Zhu, Renke Kang, Jiasheng Li, Jiahui Xu
Summary: In this paper, the influence of the dynamic characteristics of the aerostatic spindle system on the medium frequency waviness error of the silicon wafer surface is studied. A dynamic model of the spindle system is established, and the frequency components of the intermediate frequency band of the wafer surface are obtained. An optimization scheme for structural improvement of the spindle system is given, which effectively reduces the vibration displacement and provides a reference for the structural design.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Dong-Ju Chen, Shu-Pei Li, Xuan Zhang, Jin-Wei Fan
Summary: This study investigates the dynamic characteristics of an aerostatic spindle under unstable operating conditions through the establishment of a simulation model. The results show that turbulent gas flow forms complex vortices, significantly affecting the dynamic characteristics of the spindle and subsequently influencing the generation of surface ripples on the workpiece.
ADVANCES IN MANUFACTURING
(2022)
Article
Engineering, Mechanical
Jianghai Shi, Xiaoliang Jin, Hongrui Cao
Summary: In this study, the effects of rotating speed on the dynamic stiffness and damping coefficients of aerostatic journal bearing in micro-milling process were investigated. A method for calculating the stability lobe diagram (SLD) considering the speed effect was proposed. The effects of supply air pressure and air film thickness on SLD were comprehensively studied.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Quanwei Chen, Longxiang Chen, Zixiang Fu, Shusen Xie, Qijing Lu, Xianzeng Zhang
Summary: This study presents an aerostatic micro pressure sensor based on an optical frequency comb (OFC) generated in a microbubble resonator (MBR). By analyzing multiple comb tooth information, the sensor achieves high sensitivity and accurate prediction of pressure using an artificial neural network. Compared to conventional single-mode methods, the sensor can detect lower signals.
IEEE SENSORS JOURNAL
(2023)
Article
Automation & Control Systems
Dongju Chen, Shupei Li, Jinwei Fan
Summary: In this paper, a 3D surface topography model for ultra-precision turning is proposed by considering the coupling effect of turning dynamics and dynamics of the aerostatic spindle in microscale. The model includes the identification model of the tool-workpiece interference area and the dynamic model of the aerostatic spindle. The effects of spindle speed, cutting width, and feed rate on the surface topography are analyzed, and the model is validated through cutting experiments.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Industrial
Jiankai Jiang, Tong Luo, Guoqing Zhang, Yuqi Dai
Summary: A novel offset-fly-cutting-servo (OFCS) machining system was developed for fabricating straight-groove-type micro structure arrays without the Y-axis, showing effective results with well-matched morphology between machined and designed arrays. The mathematical model, machining scheme, and cutting experiments provided theoretical reference for complex micro structure arrays machining.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Jungsub Kim, Seungjoo Lee, Heebum Chun, ChaBum Lee
Summary: The study introduces a new type of dimensional sensor, CES, that can be used for spindle dynamic characterization and in-situ monitoring, unaffected by target surface curvature and lateral motion of the spindle.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Engineering, Manufacturing
Jungsub Kim, Heebum Chun, ChaBum Lee
Summary: We propose a method for monitoring the CFRP milling process using a multi-axis displacement sensor integrated with a precision spindle system. Unlike traditional methods, our method utilizes curved-edge and capacitive sensors to measure the spindle motions and estimate cutting forces using a stiffness matrix. Additionally, we analyze time-frequency domain spectrogram images of the cutting force data to monitor and characterize CFRP defects.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Engineering, Industrial
Guoqing Zhang, Yuting Ma, Tong Luo, Shuaikang Cao, Zejia Huang
Summary: In this study, a novel vibration-assisted tool end fly cutting technique is proposed to machine linear micro-groove structure and hierarchical micro-structure surface. Through the synergy of tool end fly cutting and servo-vibration platform, a uniform and consistent micro-groove structure surface can be generated.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Xiaoliang Liang, Canbin Zhang, Chi Fai Cheung, Chunjin Wang, Kangsen Li, Benjamin Bulla
Summary: This study clarifies the differences between the micro/nano incremental material removal mechanisms of conventional cutting (CC) and high-frequency ultrasonic vibration-assisted cutting (HFUVAC), and compares their machinability advantages and microstructure features through ultra-precision cutting experiments. The results indicate that HFUVAC achieves superior machinability by reducing cutting force, reducing tool wear, suppressing surface defects, and transitioning chips from a discontinuous quasi-shear state to a continuous multiple-shear state. The study provides guidance for improving surface quality and optimizing the cutting speed to vibration frequency ratio to enhance efficiency.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2023)
Article
Engineering, Mechanical
Baisheng Wu, Xuqi Zhao, C. W. Lim, Zhengguang Li, Huixiang Zhong
Summary: A new method is proposed in this paper to calculate the mid-frequency response of a proportional damping system, which significantly reduces computational cost compared to direct methods. The method adaptively determines the modes and frequencies to be calculated, and approximates unknown mode contributions using a convergent power series partial sum.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Engineering, Industrial
Yupeng He, Tianfeng Zhou, Senthil Kumar, Xibin Wang
Summary: This paper investigates and validates the generation of micro-structured surfaces and hierarchical-structured surfaces under four modes of RFC. A novel RFC mode called SA-HFRFC is proposed for efficient fabrication of intricate hierarchical-structured surfaces. A new surface generation algorithm is developed to calculate and predict complex micro-structured surfaces. Numerical simulations and machining experiments confirm the effectiveness of the algorithm.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Quanhui Wu, Guoda Chen, Qinglin Liu, Baisong Pan, Wanqun Chen
Summary: This paper analyzes and verifies the forming mechanism of turning workpiece surface topography through theoretical simulation and experimental research. The study shows that spindle vibrations and coupled vibrations have a significant impact on surface topography, and crucial geometric errors affect the surface texture of the workpiece.
Article
Computer Science, Interdisciplinary Applications
Xuewei Zhang, Tianbiao Yu, Pengfei Xu, Ji Zhao
Summary: An intelligent system for evaluating sustainability performance of micro milling process is proposed in this paper, using PCA and BP algorithms. By integrating various algorithms and networks, the tool life of micro cutting tools can be predicted more accurately, optimizing the sustainability of the micro milling process.
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
(2022)
Article
Automation & Control Systems
Huawei Ji, Anqi Qi, Wenhui Xing, Xiaoping Hu, Fan Yang, Bo Lv, Xin Wu, Jing Ni
Summary: This study is of great significance for improving the stability of the disc cutter ultrasonic cutting system.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)