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Review on the progress of ultra-precision machining technologies
Julong YUAN, Binghai LYU, Wei HANG, Qianfa DENG
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 158-180 doi: 10.1007/s11465-017-0455-9
Ultra-precision machining technologies are the essential methods, to obtain the highest form accuracy and surface quality. As more research findings are published, such technologies now involve complicated systems engineering and been widely used in the production of components in various aerospace, national defense, optics, mechanics, electronics, and other high-tech applications. The conception, applications and history of ultra-precision machining are introduced in this article, and the developments of ultra-precision machining technologies, especially ultra-precision grinding, ultra-precision cutting and polishing are also reviewed. The current state and problems of this field in China are analyzed. Finally, the development trends of this field and the coping strategies employed in China to keep up with the trends are discussed.
关键词: ultra-precision grinding ultra-precision cutting ultra-precision polishing research status in China development tendency
Research progress on ultra-precision machining technologies for soft-brittle crystal materials
Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 77-88 doi: 10.1007/s11465-017-0411-8
Soft-brittle crystal materials are widely used in many fields, especially optics and microelectronics. However, these materials are difficult to machine through traditional machining methods because of their brittle, soft, and anisotropic nature. In this article, the characteristics and machining difficulties of soft-brittle and crystals are presented. Moreover, the latest research progress of novel machining technologies and their applications for soft-brittle crystals are introduced by using some representative materials (e.g., potassium dihydrogen phosphate (KDP), cadmium zinc telluride (CZT)) as examples. This article reviews the research progress of soft-brittle crystals processing.
关键词: brittle soft functional crystal ultra-precision machining
Special issue: Ultra-precision machining
Zhuangde JIANG,Dongming GUO
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 1-2 doi: 10.1007/s11465-017-0445-y
Development and application prospects of piezoelectric precision driving technology
ZHAO Chunsheng, ZHANG Jiantao, ZHANG Jianhui, JIN Jiamei
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 119-132 doi: 10.1007/s11465-008-0034-1
关键词: Electromagnetic ultra-precision processing technology piezoelectric cumbrous
Model reduction techniques for dynamics analysis of ultra-precision linear stage
Xuedong CHEN, Zhixin LI
《机械工程前沿(英文)》 2009年 第4卷 第1期 页码 64-70 doi: 10.1007/s11465-009-0009-x
Advances in molecular dynamics simulation of ultra-precision machining of hard and brittle materials
Xiaoguang GUO,Qiang LI,Tao LIU,Renke KANG,Zhuji JIN,Dongming GUO
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 89-98 doi: 10.1007/s11465-017-0412-7
Hard and brittle materials, such as silicon, SiC, and optical glasses, are widely used in aerospace, military, integrated circuit, and other fields because of their excellent physical and chemical properties. However, these materials display poor machinability because of their hard and brittle properties. Damages such as surface micro-crack and subsurface damage often occur during machining of hard and brittle materials. Ultra-precision machining is widely used in processing hard and brittle materials to obtain nanoscale machining quality. However, the theoretical mechanism underlying this method remains unclear. This paper provides a review of present research on the molecular dynamics simulation of ultra-precision machining of hard and brittle materials. The future trends in this field are also discussed.
关键词: MD simulation ultra-precision machining hard and brittle materials machining mechanism review
Air-bearing position optimization based on dynamic characteristics of ultra-precision linear stages
CHEN Xuedong, LI Zhixin
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 400-407 doi: 10.1007/s11465-008-0060-z
关键词: manufacture different interaction air-bearings response amplitude
F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 193-202 doi: 10.1007/s11465-017-0448-8
Large-aperture potassium dihydrogen phosphate (KDP) crystals are widely used in the laser path of inertial confinement fusion (ICF) systems. The most common method of manufacturing half-meter KDP crystals is ultra-precision fly cutting. When processing KDP crystals by ultra-precision fly cutting, the dynamic characteristics of the fly cutting machine and fluctuations in the fly cutting environment are translated into surface errors at different spatial frequency bands. These machining errors should be suppressed effectively to guarantee that KDP crystals meet the full-band machining accuracy specified in the evaluation index. In this study, the anisotropic machinability of KDP crystals and the causes of typical surface errors in ultra-precision fly cutting of the material are investigated. The structures of the fly cutting machine and existing processing parameters are optimized to improve the machined surface quality. The findings are theoretically and practically important in the development of high-energy laser systems in China.
关键词: ultra-precision fly cutting large-aperture KDP crystals spatial frequency processing error
Electrorheological damper for the ultra-precision air bearing stage
ZHU Yu, JIA Songtao, CHEN Yaying, LI Guang
《机械工程前沿(英文)》 2008年 第3卷 第2期 页码 158-163 doi: 10.1007/s11465-008-0031-4
关键词: post-yield linear-motor advanced sliding pre-yield position
蒋庄德, 李常胜, 孙林, 段端志, 康城玮, 陈杉杉, 林启敬, 杨树明
《中国工程科学》 2023年 第25卷 第1期 页码 131-141 doi: 10.15302/J-SSCAE-2023.07.003
高端光学元件是决定高端装备性能水平的核心零件,研究高端光学元件超精密加工技术与装备发展,对于实施制造强国战略、满足高端装备产业需求具有积极意义。本文剖析了光学元件超精密加工方法与装备、高性能基础部件、超精密光学加工中的测量方法与装备等的发展情况,凝练了精度与尺寸极端化、形状与性能一体化、加工工艺复合化、加工与检测一体化、装备与工艺智能化等发展趋势。通过广泛的行业调研和研讨,从需求、目标、产品、关键技术、应用示范、支撑保障等层次着手,形成了面向2035 年我国高端光学元件超精密制造技术路线图。针对性提出了优化创新体系设置、组织优势资源成立技术联盟,加大资源保障力度、布局基础研究和技术攻关计划,加强人才培育、构建梯队并扩大队伍规模,筑牢产业发展基础、培育龙头企业和专精特新“小巨人”企业等发展建议,以期促进高端光学元件加工产业提升与高质量发展。
Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
ZHAO Qingliang, Brinksmeier Ekkard, Riemer Oltmann, Rickens Kai
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 350-355 doi: 10.1007/s11465-007-0061-3
关键词: ELID peripheral electrolytic in-process nickel-electroplated monolayer measurement
彭武,林帆,赵强,马建磊
《中国工程科学》 2010年 第12卷 第4期 页码 21-24
论述了对泰州长江公路大桥超大型薄壁钢壳沉井加工工艺和焊接工艺的合理选择,针对钢壳沉井外形尺寸大、壁薄的特点,采用了合理的焊接、拼装方法,使单元件加工、各单元件组装和整体拼装过程的精度,以及对薄壁钢板的焊接和防变形的精度得到有效控制,从而保证加工质量。
超短脉冲激光制造及表面加工微米器件 Review
于泳超, 白石, 王树同, 胡安明
《工程(英文)》 2018年 第4卷 第6期 页码 779-786 doi: 10.1016/j.eng.2018.10.004
超短脉冲激光在材料加工方面具有独特的优势。其对焦点之外区域的热影响效应非常有限,使超短脉冲激光可被应用于微米甚至纳米尺寸的精密加工。另外,非线性多光子效应使超短脉冲激光可以加工多种透明材料,包括玻璃以及透明高分子材料。基于这些特点,我们利用激光直写技术在高分子衬底上成功制造出了具有三维(3D)结构的高性能微型超级电容器(MSC),在0.1 mA·cm–2的电流密度下表现出42.6 mF·cm–2的峰值比电容。同时,也制造出了可用于探测多种“味道”的柔性传感器阵列。对传感器电极表面进行了不同的处理,如镀金、沉降氧化石墨烯(rGO)以及沉积聚苯胺(PANI)。通过对采集的数据进行主成分分析(PCA),这一传感器阵列可以成功地检测出样品内的不同物质。另外,在3D 结构玻璃微流体通道内由全飞秒激光加工出了具有2D周期性结构的纳米金属表面,可用于实时表面增强拉曼散射(SERS)的检测。全飞秒激光加工过程包括激光烧蚀、激光还原和激光诱导表面纳米工程。这些工作证明了超短脉冲激光在表面精密加工中的巨大潜力。
Processing of high-precision ceramic balls with a spiral V-groove plate
Ming FENG,Yongbo WU,Julong YUAN,Zhao PING
《机械工程前沿(英文)》 2017年 第12卷 第1期 页码 132-142 doi: 10.1007/s11465-017-0436-z
As the demand for high-performance bearings gradually increases, ceramic balls with excellent properties, such as high accuracy, high reliability, and high chemical durability used, are extensively used for high-performance bearings. In this study, a spiral V-groove plate method is employed in processing high-precision ceramic balls. After the kinematic analysis of the ball-spin angle and enveloped lapping trajectories, an experimental rig is constructed and experiments are conducted to confirm the feasibility of this method. Kinematic analysis results indicate that the method not only allows for the control of the ball-spin angle but also uniformly distributes the enveloped lapping trajectories over the entire ball surface. Experimental results demonstrate that the novel spiral V-groove plate method performs better than the conventional concentric V-groove plate method in terms of roundness, surface roughness, diameter difference, and diameter decrease rate. Ceramic balls with a G3-level accuracy are achieved, and their typical roundness, minimum surface roughness, and diameter difference are 0.05, 0.0045, and 0.105 mm, respectively. These findings confirm that the proposed method can be applied to high-accuracy and high-consistency ceramic ball processing.
关键词: bearing ceramic ball spiral V-groove kinematic analysis trajectory
Feature extraction of hyperspectral images for detecting immature green citrus fruit
Yongjun DING, Won Suk LEE, Minzan LI
《农业科学与工程前沿(英文)》 2018年 第5卷 第4期 页码 475-484 doi: 10.15302/J-FASE-2018241
At an early immature growth stage of citrus, a hyperspectral camera of 369–1042 nm was employed to acquire 30 hyperspectral images in order to detect immature green fruit within citrus trees under natural illumination conditions. First, successive projections algorithm (SPA) were implemented to select 677, 804, 563, 962, and 405 nm wavebands and to construct multispectral images from the original hyperspectral images for further processing. Then, histogram threshold segmentation using NDVI of 804 and 677 nm was implemented to remove image backgrounds. Three slope parameters, calculated from the pairs 405 and 563 nm, 563 and 677 nm, and 804 and 962 nm were used to construct a classifier to identify the potential citrus fruit. Then, a marker-controlled watershed segmentation based on wavelet transform was applied to obtain potential fruit areas. Finally, a green fruit detection model was constructed according to Grey Level Co-occurrence Matrix (GLCM) texture features of the independent areas. Three supervised classifiers, logistic regression, random forest and support vector machine (SVM) were developed using texture features. The detection accuracies were 79%, 75%, and 86% for the logistic regression, random forest, and SVM models, respectively. The developed algorithm showed a great potential for identifying immature green citrus for an early yield estimation.
关键词: hyperspectral green citrus image processing fruit detection precision agriculture yield mapping
标题 作者 时间 类型 操作
Review on the progress of ultra-precision machining technologies
Julong YUAN, Binghai LYU, Wei HANG, Qianfa DENG
期刊论文
Research progress on ultra-precision machining technologies for soft-brittle crystal materials
Hang GAO,Xu WANG,Dongming GUO,Yuchuan CHEN
期刊论文
Development and application prospects of piezoelectric precision driving technology
ZHAO Chunsheng, ZHANG Jiantao, ZHANG Jianhui, JIN Jiamei
期刊论文
Model reduction techniques for dynamics analysis of ultra-precision linear stage
Xuedong CHEN, Zhixin LI
期刊论文
Advances in molecular dynamics simulation of ultra-precision machining of hard and brittle materials
Xiaoguang GUO,Qiang LI,Tao LIU,Renke KANG,Zhuji JIN,Dongming GUO
期刊论文
Air-bearing position optimization based on dynamic characteristics of ultra-precision linear stages
CHEN Xuedong, LI Zhixin
期刊论文
Full-band error control and crack-free surface fabrication techniques for ultra-precision fly cutting
F. H. ZHANG, S. F. WANG, C. H. AN, J. WANG, Q. XU
期刊论文
Electrorheological damper for the ultra-precision air bearing stage
ZHU Yu, JIA Songtao, CHEN Yaying, LI Guang
期刊论文
Ultra-precision ductile grinding of BK7 using super abrasive diamond wheel
ZHAO Qingliang, Brinksmeier Ekkard, Riemer Oltmann, Rickens Kai
期刊论文
Processing of high-precision ceramic balls with a spiral V-groove plate
Ming FENG,Yongbo WU,Julong YUAN,Zhao PING
期刊论文