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Micromachines
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Advances in Micro-Milling, 2nd Edition
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Advances in Micro-Milling, 2nd Edition

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D：Materials and Processing".

Deadline for manuscript submissions: closed (30 March 2024) | Viewed by 2314

Special Issue Editors

Prof. Dr. Xiaohong Lu

E-Mail Website
Guest Editor
School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
Interests: precision machining; micro-milling; modeling; process simulation; FSW
Special Issues, Collections and Topics in MDPI journals
Dr. Man Zhao

E-Mail Website
Guest Editor
School of Mechanical and Automotive Engineering, Shanghai University of Engineering and Science, Shanghai 201620, China
Interests: advanced manufacturing; microstructure evolution; residual stress
Special Issues, Collections and Topics in MDPI journals
Dr. Yixuan Feng

E-Mail Website1 Website2
Guest Editor
Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
Interests: ultrasonic-vibration-assisted milling; laser-assisted milling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the increasing demand for micro-structures/parts in aerospace, biomedical, microelectronics and other industries, micro-milling technology, which uses a high-frequency spindle together with cutting tools with diameters smaller than 1 mm, has become common because of its machining accuracy and machining capabilities.

In micro-milling processes, mechanical loading and thermal loading result in material microstructure evolution, which significantly affect material macroscale properties and the distribution of residual stress, including recrystallization and grain growth, crystallographic texture evolution, dislocation density evolution, and phase transformation. On the other hand, as a key evaluation index of the surface integrity, residual stress induced in micro-milling is important, and it is imperative to understand and control it to improve the dimension accuracy and surface finish of workpieces.

This Special Issue is devoted to advances in the scientific understanding of micro-milling, mainly in metals, but also in composites, ceramics and other structural/functional materials. We welcome research papers, communications, and review articles that focus on the research, design, manufacture, performance validation, and application of high-precision machining, including fundamental and applied research and development in micro-milling processes and advanced measurement science. The scope includes micro-milling systems and supporting metrology at the microscale.

We look forward to receiving your submissions!

Prof. Dr. Xiaohong Lu
Dr. Man Zhao
Dr. Yixuan Feng
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • micro-milling
  • modeling and simulation
  • system and measurement
  • scale effect
  • surface integrity
  • residual stress
  • microstructure evolution

Related Special Issue

Published Papers (2 papers)

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Research

18 pages, 4961 KiB  
Article
Minimum Quantity Lubrication Jet Noise: Passive Control
by Xiaodong Hu, Junhao Yu, Yuanlong Li, Yu Xia, Xuefeng Xu and Ruochong Zhang
Micromachines 2023, 14(10), 1814; https://doi.org/10.3390/mi14101814 - 22 Sep 2023
Viewed by 746
Abstract
Jet noise is a common problem in minimum quantity lubrication (MQL) technology. This should be given great attention because of its serious impacts on the physical and mental health of the operators. In this study, a micro-grooved nozzle is proposed based on the [...] Read more.
Jet noise is a common problem in minimum quantity lubrication (MQL) technology. This should be given great attention because of its serious impacts on the physical and mental health of the operators. In this study, a micro-grooved nozzle is proposed based on the noise reduction concept of biological micro-grooves. The flow field and acoustic characteristics of an original nozzle and a micro-grooved nozzle were investigated numerically to help better understand the noise reduction mechanism. The reasons for noise generation and the effects of the length (L), width (W) and depth (δ) of the micro-grooves on noise reduction were analyzed. It was found that jet noise is generated by the large-scale vortex ring structure and the pressure fluctuations caused by its motion. The overall sound pressure level (OASPL) decreased with the increases in W and δ, and increased with the increase in L. Among of them, δ has the greatest effect on noise reduction. The maximum noise reduction achieved was 6.66 dB, as verified by the OASPL test. Finally, the noise reduction mechanism was discussed in terms of the flow field, vorticity and the frequency characteristics. Micro-grooves can enhance the mixing of airflow inside the nozzle and accelerate the process of large-scale vortices breaking into smaller-scale vortices. It also reduces the sound pressure level (SPL) of middle frequencies, as well as the SPL of high frequencies on specific angles. Full article
(This article belongs to the Special Issue Advances in Micro-Milling, 2nd Edition)
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14 pages, 2971 KiB  
Article
Force Prediction and Material Removal Mechanism Analysis of Milling SiCp/2009Al
by Rong Wang, Man Zhao, Jian Mao and Steven Y. Liang
Micromachines 2022, 13(10), 1687; https://doi.org/10.3390/mi13101687 - 07 Oct 2022
Cited by 3 | Viewed by 1282
Abstract
In recent years, medium- and low-volume fraction silicon carbide particle-reinforced aluminum matrix composites (SiCp/Al) have increasingly become a key material in the aerospace industry. Force prediction and material removal mechanism analysis of milling SiCp/Al are necessary to improve the surface integrity of products. [...] Read more.
In recent years, medium- and low-volume fraction silicon carbide particle-reinforced aluminum matrix composites (SiCp/Al) have increasingly become a key material in the aerospace industry. Force prediction and material removal mechanism analysis of milling SiCp/Al are necessary to improve the surface integrity of products. An orthogonal experiment of SiCp/2009Al with a volume fraction of 20% was carried out, and the effect of the milling parameters on milling force was studied with the input parameters of milling speed, feed rate, and milling depth. Thereby, the empirical force model of milling SiCp/2009Al is established by fitting the experiential data based on the multiple linear regression analysis methods. Moreover, the effects of the milling parameters on the force were analyzed. Finally, the material removal mechanism of milling SiCp/Al is analyzed based on dislocation theory. The analyzed results reveal that the removal mechanism of the SiCp/Al composites includes plastic deformation of the aluminum matrix, cutting of particles, fragmentation, and deboning. Based on dislocation theory and maximum undeformed thickness theory, the effect of cutting parameters on the form of material removal was analyzed, which serves as a guide for selecting appropriate machining parameters to obtain improved machining quality of SiCp/Al composites. Full article
(This article belongs to the Special Issue Advances in Micro-Milling, 2nd Edition)
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