Article
Engineering, Mechanical
Zihao Li, Fugui Xie, Yanlei Ye, Peng Li, Xinjun Liu
Summary: This paper proposes an intuitive teleoperation method based on the FT sensor, which processes the input signals using force limit algorithm to achieve anti-interference, output limitation, and online velocity adjustment. The experiments demonstrate that this method effectively solves the issue of interference force caused by force coupling and enables remote operation of the manipulator.
CHINESE JOURNAL OF MECHANICAL ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Yutao Chen, Yahao Wang, Xuming Tang, Kai Wu, Shaolei Wu, Rui Guo, Yuliang Zhao, Erbao Dong
Summary: This paper proposes a 6-DOF bilateral hybrid teleoperation control strategy that can map the workspace of the manipulators without changing the operation accuracy. The hybrid control includes admittance and force control based on feedback from a force sensor. The control strategies switch autonomously through the positioning of the Sigma.7 handle in the workspace. Extensive experiments are conducted to evaluate the changes in displacement and velocity before and after the switching process and under different control parameters.
Article
Computer Science, Interdisciplinary Applications
Meng Wang, Kaixuan Chen, Panfeng Wang, Yimin Song, Tao Sun
Summary: In this study, a novel teleoperation machining mode and control strategy were proposed to improve efficiency and accuracy in small batch production of large casting parts. By using variable motion mapping and elastic compensation, constant cutting force was achieved, and the workpiece was protected by employing forbidden virtual fixtures and movement constraints on the slave robot.
ROBOTICS AND COMPUTER-INTEGRATED MANUFACTURING
(2024)
Article
Engineering, Industrial
Xin Wu, Canjun Yang, Yuanchao Zhu, Weitao Wu, Qianxiao Wei
Summary: This study presents a natural human-robot teleoperation system utilizing monocular human pose estimation, which simplifies heterogeneous robot arm teleoperation, and bridges the gap between human joint pose and robot joint angle pose. Qualitative and quantitative experiments verify the effectiveness of joint extraction methods, while teleoperation experiments on different robots validate system control feasibility, providing an intuitive and efficient method for human-robot teleoperation with low-cost devices.
INDUSTRIAL ROBOT-THE INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH AND APPLICATION
(2021)
Article
Automation & Control Systems
Zhibao Hou, Xifang Zhang, Zhenqiang Yao
Summary: Grooved grinding wheels can reduce grinding thermal damage and improve the grinding quality of workpieces by decreasing the grinding temperature and residual stress.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Review
Chemistry, Analytical
Haigang Liang, Jinwei Qiao
Summary: Grinding is essential in casting production, but the process is complicated with many difficulties. In recent years, researchers have proposed intelligent grinding methods to improve machining accuracy, efficiency, and surface consistency. Future research should focus on online robot detection, material removal prediction, and high-precision matching.
Article
Automation & Control Systems
Sijie Cai, Zhiqin Cai, Bin Yao, Zhihuang Shen, Jianchun Liu, Haipeng Huang, Bingjing Lin, Jianchun Lin, Haibin Huang
Summary: The generating grinding method is widely used in finishing the face gear tooth surface due to its high machining accuracy and efficiency. The physical performance of the grinding process greatly affects the machining accuracy, so accurately simulating the grinding process is necessary for improving the manufacturing accuracy of the face gear. This study proposes a normal cutting depth iterative method to calculate the grinding residual in the face gear generating grinding process, which considers the complex 3D spatial characteristics of the face gear tooth surface and achieves higher computational accuracy and efficiency compared to other methods.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Weijian Zhang, Yadong Gong, Yunchao Xu, Jibin Zhao
Summary: In this study, a single grit grinding experimental method is proposed to investigate the material removal behavior of robot abrasive belt grinding (RABG) on nickel-based superalloy. Ceramic alumina grits are used to scratch the superalloy in the experimental setup of RABG. Four material removal parameters, including real cutting depth, number of cutting edges involved in grinding, effective cutting area of cutting edges, and pile-up ratio, are quantitatively described to characterize the material removal behavior. The experimental results show that the grits exhibit good cutting performance and the dynamic changes of cutting edges significantly affect the material removal. Moreover, this study analyzes the differences between RABG and wheel grinding (WG), investigates the effect of cutting depth on material removal, and determines the factors influencing the material removal ability by evaluating the material removal ability of different grits.
MATERIALS AND MANUFACTURING PROCESSES
(2023)
Review
Chemistry, Physical
Naol Dessalegn Dejene, Hirpa G. Lemu, Endalkachew Mosisa Gutema
Summary: Thin-walled structures play a significant role in engineering construction, and reducing wall thickness has numerous advantages. Selective laser melting (SLM) and investment casting are two important technologies for producing thin-walled and complex components. This review article compares SLM and investment casting in terms of mechanical properties, quality, and residual stress.
Article
Chemistry, Physical
Bartosz Zielinski, Krzysztof Nadolny, Wojciech Zawadka, Tomasz Chacinski, Wojciech Stachurski, Gilmar Ferreira Batalha
Summary: This study focused on experimental research on the sharpening of planar technical blades used in the fish processing industry, aiming to reduce the negative environmental impact by minimizing coolant consumption. Results showed that using environmentally friendly MQL method for cooling and lubricating the grinding zone yielded the most favorable sharpening results.
Review
Engineering, Multidisciplinary
Chen Chen, Wang Yu, Gao ZhiTao, Peng FangYu, Tang XiaoWei, Yan Rong, Zhang YuKui
Summary: With the rapid advancement of manufacturing in China, robot machining technology has become a popular research subject. Skill learning and strategy optimization have become the focus of research, and intelligent learning models have been widely used. This paper summarizes the state-of-the-art in skill learning and strategy optimization research and discusses future development trends.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2022)
Article
Chemistry, Physical
Anna Yakovleva, Margarita Isaenkova, Roman Minushkin
Summary: The purpose of this research is to analyze the change in residual stresses in the surface layer of steel samples, taking into account the technological heredity effect on the value and sign of residual stresses. The study shows that the combined processing modes significantly affect the sign and value of residual stresses. Recommendations are provided for the use of combined processing in power plant parts.
Article
Chemistry, Physical
Bartosz Zielinski, Krzysztof Nadolny, Wojciech Zawadka, Tomasz Chacinski, Wojciech Stachurski, Gilmar Ferreira Batalha
Summary: The study aimed to determine the effects of grinding wheel grain size, kinematics, and feed rate on the grinding process. The results showed that grinding wheels made of B181 cBN grains are the most favorable for shaping planar technical blades of X39Cr13 steel.
Article
Automation & Control Systems
Zhiming Zhang, Jinglin Tong, Junshuai Zhao, Feng Jiao, Penghui Zai, Ziqiang Liu
Summary: The study investigated the effects of ultrasonic longitudinal-torsional composite milling on titanium alloy curved thin-walled parts, showing that this method can obtain larger residual compressive stress, improve machined surface integrity, and reduce cutting force and cutting temperature.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Fangtian Deng, Rui Li, Steffen Klan, Wolfram Volk
Summary: The study evaluated the code symbol quality of different marking methods on various as-cast surfaces, finding that laser marking performed the best, dot peen marking had high symbol contrasts, and electrolytic markings were only suitable for smooth surfaces. After post-treatments, the code qualities decreased substantially for all methods.
INTERNATIONAL JOURNAL OF METALCASTING
(2022)
