November 23, 2022
  • November 23, 2022

Global consideration of machine tools

By on May 17, 2022 0

image: Coupling relationship between the MR process and the TC process of machine tools.
to see After

Credit: Kexu LAI, Huajun CAO, Hongcheng LI, Benjie LI, Disheng HUANG

Recently, a research team from the State Key Laboratory of Mechanical Transmissions of Chongqing University in China discovered the coupling relationship between the thermal control (TC) process and the material removal (MR) process of machine- precision tools. The research team believes that the coupling relationship of the two functional processes can affect machining accuracy and energy efficiency by influencing the heat balance characteristics and energy characteristics of machine tools. This study to be found in the magazine Frontiers of Mechanical Engineering April 29, 2022.

With the widespread adoption of machine tools in manufacturing, machine tool energy consumption has been a research hotspot and a frontier for low-carbon green manufacturing. However, previous research simply considered MR energy as useful energy consumption and ignored the useful energy consumed by TC to maintain internal thermal stability and machining accuracy. In the pursuit of energy-saving and high-precision machining, more attention should be paid to the energy consumption of TC and the coupling relationship between MR and TC. Therefore, this research team explores the coupling relationship between the two functional processes using theoretical modeling and experimental analysis. As shown in the following figure, the MR of a precision machine tool is a value-added process, as the power of the MR increases, the energy characteristics change, and the heat generation caused by the MR increases synchronously . To ensure the state of thermal equilibrium, the CT will consume a lot of energy to remove most of the heat generated by the MR.

Traditional research is dedicated to improving the energy efficiency of MR-related cutting. But as machine tools become more sophisticated and machine tool users demand more and more machining quality, the machining accuracy which is closely related to the heat balance state is become an important index for evaluating the machining performance of machine tools. “There is a clear disconnect between energy efficiency and machining precision, so how to achieve energy-efficient and precision collaborative machining is a key research project to improve the machining performance of precision CNC machine tools. in the future,” Professor Huajun Cao said. , the author of the study.

Professor Huajun Cao’s research team is one of the pioneering research teams studying green manufacturing in China. This team has carried out extensive research on green design and energy saving technology of metal cutting machine tools, dynamic modeling and carbon efficiency evaluation method of manufacturing systems, as well as thermal balance control and thermal error compensation of precision machine tools. The above research provides the research team with a strong technological foundation and disciplinary advantages in the field of green manufacturing.

“Exploring the coupling relationship between material removal and thermal control is the first step to improve the machining performance of precision machine tools, which is currently only from a qualitative point of view”, Professor Cao said, “In the future, we will continue our research on the ‘electrical-mechanical-thermal’ coupling mechanism that is affected by MR and TC. This work can provide theoretical supports for machine tools to achieve high efficiency and precision machining goals, and promote the green and low-carbon development of precision machine tools.

Reference: Kexu Lai, Huajun Cao, Hongcheng Li, Benjie Li and Disheng Huang. Evaluation of couplings for material removal and thermal control on precision milling machine tools. Frontiers of Mechanical Engineering, 2022, 17(1): 12 https://doi.org/10.1007/s11465-021-0668-9

About Higher Education Press

Founded in May 1954, Higher Education Press Limited Company (HEP), affiliated with the Ministry of Education, is one of the earliest institutions engaged in educational publishing after the establishment of the PR China in 1949. After six decades of efforts, HEP has grown into a large comprehensive publisher, with products in various forms and at different levels. Both for import and export, HEP strives to fill the gap in domestic and overseas markets and meet the demand of global customers by cooperating with more than 200 partners around the world and selling products and services in 32 languages ​​worldwide. Today, HEP ranks among the top Chinese publishers in terms of copyright export volume and among the top 50 publishing companies in the world in terms of overall strength.

the Frontiers Newspapers The series published by HEP includes 28 English academic journals, covering the largest academic fields in China today. Among the series, 13 were indexed by SCI, 6 by EI, 2 by MEDLINE, 1 by A&HCI. HEP’s academic monographs have won about 300 different kinds of publishing funds and awards both at home and abroad.

On Frontiers of Mechanical Engineering

Frontiers of Mechanical Engineering is a peer-reviewed international academic journal sponsored by the Ministry of Education of China. The journal seeks to provide a forum for a wide range of high-quality scholarly articles to promote rapid communication and exchange among researchers, scientists, and engineers in the field of mechanical engineering. The journal publishes original research articles, review articles and feature articles. The journal covers all major branches of mechanical engineering, including (but not limited to): machines and mechanisms, gears and transmissions, dynamics of mechanical systems, mechanical structures and stress analysis, tribology and surface technology, mechanical design and bionics, machining processes and technologies, automation manufacturing, precision engineering, mechatronics and embedded systems, micro/nano manufacturing and systems, robotics, sensing, MEMS and green manufacturing.

The editors are Academician Zheng You from Huazhong University of Science and Technology, China, Academician Dongming Guo from Dalian University of Technology, China. The journal has been indexed by SCI, SCOPUS, INSPEC, Astrophysics Data System (ADS), Google Scholar, CSA, Academic OneFile, Chinese Science Citation Database, Expanded Academic, Gale, OCLC, Summon by ProQuest, etc.


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