Development and Application on Ultrahigh Speed Grinding Processing Technology

2014 ◽  
Vol 509 ◽  
pp. 56-60
Author(s):  
Jian Yang
Keyword(s):  
Surface Roughness ◽  
Development Trend ◽  
Processing Technology ◽  
Processing Quality ◽  
Precision Grinding ◽  
Hard Materials ◽  
The Common ◽  
Grinding Efficiency ◽  
The Development Trend

Ultrahigh speed grinding technology is an advanced processing technology, which chould improve grinding efficiency, reduce surface roughness and improve processing quality. This paper introduces the origin of ultrahigh speed grinding processing technology, the development situation of ultrahigh speed grinding, summarizes its advantages comparing with the common grinding, analyzes the application on efficiency deep grinding, ultrahigh speed precision grinding, grinding hard materials grinding, grinding green and so on. And then it expounds the development trend of the ultrahigh speed grinding.

scholarly journals Tunnel Monitoring and Measuring System Using Mobile Laser Scanning: Design and Deployment

2020 ◽  
Vol 12 (4) ◽  
pp. 730 ◽  
Author(s):  
Haili Sun ◽  
Zhengwen Xu ◽  
Lianbi Yao ◽  
Ruofei Zhong ◽  
Liming Du ◽  
...  
Keyword(s):  
Laser Scanning ◽  
Development Trend ◽  
Image Resolution ◽  
Measuring System ◽  
Deformation Analysis ◽  
Disease Detection ◽  
Environmental Disease ◽  
The Common ◽  
Tunnel Monitoring ◽  
The Development Trend

The common statistical methods for rail tunnel deformation and disease detection usually require a large amount of equipment and manpower to achieve full section detection, which are time consuming and inefficient. The development trend in the industry is to use laser scanning for full section detection. In this paper, a design scheme for a tunnel monitoring and measuring system with laser scanning as the main sensor for tunnel environmental disease and deformation analysis is proposed. The system provides functions such as tunnel point cloud collection, section deformation analysis, dislocation analysis, disease extraction, tunnel and track image generation, roaming video generation, etc. Field engineering indicated that the repeatability of the convergence diameter detection of the system can reach ±2 mm, dislocation repeatability can reach ±3 mm, the image resolution is about 0.5 mm/pixel in the ballast part, and the resolution of the inner wall of the tunnel is about 1.5 mm/pixel. The system can include human–computer interaction to extract and label diseases or appurtenances and support the generation of thematic disease maps. The developed system can provide important technical support for deformation and disease detection of rail transit tunnels.

Research on Latest Application of Precision and Special Processing Technology

2014 ◽  
Vol 971-973 ◽  
pp. 934-937
Author(s):  
Guo Min Lin ◽  
Wen Guang Zhang ◽  
Miao Shang
Keyword(s):  
Development Trend ◽  
Processing Technology ◽  
Classification Methods ◽  
Processing Technologies ◽  
The Development Trend

The engineering background of special processing technology and precision is given. The characteristics of precision and special processing technology are analyzed. The precision and special processing technologies are classified according to the different classification methods. The latest applications of precision and special processing technology in all areas are discussed. The development trend of the precision and special processing technology is pointed out finally. Keywords: Precision and special processing technology; Fine processing; Overall component

Recent Patents on Flexible Fixture for Parts Machining

2020 ◽  
Vol 13 ◽  
Author(s):  
Chengyi Pan ◽  
Baocheng Xie ◽  
Xiaowei Ni
Keyword(s):  
Structural Design ◽  
Development Trend ◽  
Processing Quality ◽  
Processing Efficiency ◽  
Existing Problems ◽  
Working Principle ◽  
Different Shapes ◽  
The Development Trend ◽  
Structure And Design

Background: Flexible fixture is widely used in the diversification processing and personalized processing of parts. The research on the structure and working principle of flexible fixture is beneficial to improving the clamping efficiency and clamping stability of parts and enhancing the processing efficiency and processing quality of parts. Objective: To meet the growing demand for the processing of parts with different sizes and different shapes, the clamping stability and clamping efficiency of the fixture for the processed parts are continuously improved, and then the processing efficiency and the processing quality of parts have been improved continuously. Methods: This paper reviews various representative patents related to the structural device of flexible fixture for parts machining. Results: Through retracing the characteristics of different structural device of flexible fixture, the main existing problems in the structure and design principles of flexible fixtures are concluded and analyzed, and the development trend of flexible fixtures in structural design is discussed in the future. Conclusion: The optimization and development of the structural device of the flexible fixture is conducive to improving the processing efficiency and processing quality of the parts machining. More related patents on flexible fixture for parts machining will be invented.

scholarly journals A study on the improvement of the future branch system

2021 ◽  
Vol 4 (3) ◽  
pp. 1-19
Author(s):  
Yongsik Park
Keyword(s):  
Air Force ◽  
Transition Process ◽  
Development Trend ◽  
Artificial Satellites ◽  
Weapon Systems ◽  
Branch System ◽  
The Future ◽  
The Common ◽  
Multiple Domains ◽  
The Development Trend

This study aims to suggest an improvement plan for the army branch system considering the development trend of weapon systems through a case analysis of the vision and major weapon systems for each army branch system in R.O.K army. In the future, with the development of science and technology, hyper-connected networks based on artificial satellites would be built, and mosaic warfare, which integrates multiple domains simultaneously, and weapon systems capable of performing all-weather multifunctional battles across land, sea, and air would emerge. As a result, the common areas of the Army, Navy, and Air Force would be expanded, and the division of each army or branch itself would become ambiguous. Hence, it will be inevitable to move away from the branch operation concepts that have been operational until now to seek the concept of jointness or integration. To study this phenomenon, based on the Korean Army Vision 2050 published by the Army, the transition process of the current Army branch system and the cases of vision and major weapon systems for each branch were analyzed. The results of the analysis confirmed that although new advanced complex weapon systems are being developed for each branch, relatively little change has been made to the system. In particular, with the advent of hybrid drones and intelligent autonomous combat robots that can simultaneously perform ‘Surveillance, Reconnaissance - Decision – Strike’, it is expected that the area of expansion and mutual redundancy of combat functions will be further deepened. Therefore, in connection with the development of the weapon system, we will seek a solution to improve the Army branch system in the future and clarify the implications for the Navy and Air Force in the future.

scholarly journals The development trend of AC-style PDPs

1998 ◽  
Vol 82 (Appendix) ◽  
pp. 311-311
Author(s):  
Tetsuji Okajima ◽  
Chizuka Tani
Keyword(s):  
Development Trend ◽  
The Development Trend

scholarly journals Study on the Effect of Grinding Pressure on Material Removal Behavior Performed on a Self-Designed Passive Grinding Simulator

2021 ◽  
Vol 11 (9) ◽  
pp. 4128
Author(s):  
Peng-Zhan Liu ◽  
Wen-Jun Zou ◽  
Jin Peng ◽  
Xu-Dong Song ◽  
Fu-Ren Xiao
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Service Life ◽  
Material Removal ◽  
Removal Rate ◽  
Grinding Force ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Grinding Temperature ◽  
Grinding Efficiency

Passive grinding is a new rail grinding strategy. In this work, the influence of grinding pressure on the removal behaviors of rail material in passive grinding was investigated by using a self-designed passive grinding simulator. Meanwhile, the surface morphology of the rail and grinding wheel were observed, and the grinding force and temperature were measured during the experiment. Results show that the increase of grinding pressure leads to the rise of rail removal rate, i.e., grinding efficiency, surface roughness, residual stress, grinding force and grinding temperature. Inversely, the enhancement of grinding pressure and grinding force will reduce the grinding ratio, which indicates that service life of grinding wheel decreases. The debris presents dissimilar morphology under different grinding pressure, which reflects the distinction in grinding process. Therefore, for rail passive grinding, the appropriate grinding pressure should be selected to balance the grinding quality and the use of grinding wheel.

scholarly journals Experimental Study on Wake Evolution of a 1.5 MW Wind Turbine in a Complex Terrain Wind Farm Based on LiDAR Measurements

2020 ◽  
Vol 12 (6) ◽  
pp. 2467 ◽  
Author(s):  
Fei Zhao ◽  
Yihan Gao ◽  
Tengyuan Wang ◽  
Jinsha Yuan ◽  
Xiaoxia Gao
Keyword(s):  
Wind Speed ◽  
Wind Shear ◽  
Wind Farm ◽  
Wind Farms ◽  
Field Measurements ◽  
Development Trend ◽  
Asymmetric Distribution ◽  
Lidar Measurements ◽  
Wind Characteristics ◽  
The Development Trend

To study the wake development characteristics of wind farms in complex terrains, two different types of Light Detection and Ranging (LiDAR) were used to conduct the field measurements in a mountain wind farm in Hebei Province, China. Under two different incoming wake conditions, the influence of wind shear, terrain and incoming wind characteristics on the development trend of wake was analyzed. The results showed that the existence of wind shear effect causes asymmetric distribution of wind speed in the wake region. The relief of the terrain behind the turbine indicated a subsidence of the wake centerline, which had a linear relationship with the topography altitudes. The wake recovery rates were calculated, which comprehensively validated the conclusion that the wake recovery rate is determined by both the incoming wind turbulence intensity in the wake and the magnitude of the wind speed.

Application of Ubiquitous Sensor Network in Collection and Analysis of CNC Machine Tool Processing Status Information

2010 ◽  
Vol 455 ◽  
pp. 621-624
Author(s):  
X. Li ◽  
Y.Y. Yu
Keyword(s):  
Machine Tool ◽  
Sensor Network ◽  
Machine Tools ◽  
Thermal Error ◽  
Development Trend ◽  
Cnc Machine Tools ◽  
Cnc Machine Tool ◽  
Cnc Machine ◽  
Status Information ◽  
The Development Trend

Because of the practical requirement of real-time collection and analysis of CNC machine tool processing status information, we discuss the necessity and feasibility of applying ubiquitous sensor network(USN) in CNC machine tools by analyzing the characteristics of ubiquitous sensor network and the development trend of CNC machine tools, and application of machine tool thermal error compensation based on USN is presented.

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