中国科学院机构知识库网格系统: 检索

Generic Cutting Force Modeling with Comprehensively Considering Tool Edge Radius, Tool Flank Wear and Tool Runout in Micro-End Milling 期刊论文 OAI收割
MICROMACHINES, 2022, 卷号: 13
作者: Gao, Shuaishuai; Duan, Xianyin; Zhu, Kunpeng; Zhang, Yu

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收藏 | 浏览/下载：40/0 | 提交时间：2022/12/23

cutting force mechanical modeling micro-end milling tool edge radius tool flank wear tool runout

A method of accurately determining temperature of cold atomic cloud in atomic fountain 期刊论文 OAI收割
ACTA PHYSICA SINICA, 2019, 卷号: 68, 期号: 19, 页码: 6
作者: Shi Jun-Ru; Wang Xin-Liang; Guan Yong; Ruan Jun; Liu Dan-Dan

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收藏 | 浏览/下载：20/0 | 提交时间：2021/11/29

knife-edge method cold atomic cloud Gaussian radius cold atomic cloud's temperature

一种精确测量原子喷泉冷原子团温度的方法 期刊论文 OAI收割
物理学报, 2019, 卷号: 68, 期号: 19
作者: 施俊如; 王心亮; 管勇; 阮军; 刘丹丹

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收藏 | 浏览/下载：14/0 | 提交时间：2020/09/02

knife-edge method cold atomic cloud Gaussian radius cold atomic cloud's temperature 刀口法冷原子团高斯半径冷原子团温度

Weakening of the anisotropy of surface roughness in ultra-precision turning of single-crystal silicon 期刊论文 OAI收割
Chinese Journal of Aeronautics, 2015, 卷号: 28, 期号: 4, 页码: 1273-1280
作者: Wang Minghai; Wang Ben; Zheng Yaohui

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收藏 | 浏览/下载：25/0 | 提交时间：2021/02/02

Anisotropy of surface roughness Cutting speed Edge radius Single-crystal silicon Strain rate Ultra-precision turning Weakening Motor vehicles. Aeronautics. Astronautics TL1-4050

Weakening of the anisotropy of surface roughness in ultra-precision turning of single-crystal silicon 期刊论文 OAI收割
Chinese Journal of Aeronautics, 2015, 卷号: 28, 期号: 4, 页码: 1273-1280
作者: Wang Minghai; Wang Ben; Zheng Yaohui

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收藏 | 浏览/下载：14/0 | 提交时间：2021/02/02

Anisotropy of surface roughness Cutting speed Edge radius Single-crystal silicon Strain rate Ultra-precision turning Weakening Motor vehicles. Aeronautics. Astronautics TL1-4050

Finite element model and analysis for micro-cutting of aluminum alloy 7050-T7451 (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Machine Design and Manufacturing Engineering, ICMDME 2012, May 11, 2012 - May 12, 2012, Jeju Island, Korea, Republic of
作者: Zhou J.; Wang F.; Wang F.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

In this paper a finite element model with respect to actual state of micro-cutting is established by adopting software of ABAQUS/Explicit. Based on the FE model the cutting force and specific cutting force with various uncut depth of cut with different cutting edge radius are compared and then analyzed with regard to this simulation. In micro-cutting the nonlinear scaling phenomenon is more evident with the decreasing of uncut chip thickness. The likely explanations for the size effect in small uncut chip thickness are discussed in this paper. (2012) Trans Tech Publications Switzerland.

The research of rigid lapping technique on diamond grating ruling tool (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Materials Science and Engineering Science, ICMSES 2010, December 11, 2010 - December 12, 2010, Shenzhen, China
Jirigalantu A.; Bayanheshig; Dong Q. X.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

One of the effective method of improving diamond tool life on rulling large diffraction gratings is developing precise double-cone edged on line edge transfering tool. But traditional died weight or manual lapping technique couldn't meet the precision requirement of on line edge transfering tool. So preliminary studied rigid lapping of diamond grating ruling tool. Choosing traditional BC6063 shaping machine and made a series of alteration on it achieved the automation of lapping process of diamond grating ruling tool. Through lapping grating ruling tool and AFM measurement find that the surface roughness of tool is 1.51nm the radius of tool edge is 160nm edge quality is good enough this verified the feasibility of rigid lapping of diamond grating ruling tool and lay the foundation for developing precision lapping machine. (2011) Trans Tech Publications Switzerland.

Manufacture for ruling concave metal grating with a long focal length (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Gao J.-X.

收藏 | 浏览/下载：70/0 | 提交时间：2013/03/25

The ruling technique for concave metal grating with long curvature radius (namely long focal length) is studied. In order to rule the concave grating with a long focal length the diamond carriage with elastic thimble mode is designed and manufactured. It is available not only to rule plane grating but to concave grating with a long focal length. The mathematic expression between the curvature radius of circular arc cutting edge of ruling tools for grating and the curvature radius of concave grating the caliber of grating and the size of transverse direction of bit tool are given. The span of curvature radius of circular arc cutting edge is analyzed theoretically. The concave metal grating with 30m curvature radius for 10.6m laser system is manufactured. The testing result shows that the quality of groove is perfect and the diffraction efficiency is more than 95.6 percent. 2010 IEEE.

Automatic spin coater for concave spherical substrate (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, July 8, 2007 - July 12, 2007, Chengdu, China
Fengchao L.; Jingsong G.; Xiaoguo F.; Jingli Z.; Zhijun X.; Jun H.; Fenglin X.; Huiqing W.; Xiaohan L.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

Coating photoresist film with uniform thickness on concave spherical substrate (CSS) is very important for microfabrication of concave spherical optical elements by lithography technique via a laser direct writer for the uneven photoresist film will result in ununiformity of line width so as to influence the characters of optical elements. For improving the uniformity of photoresist film coating on CSS an automatic spin coater was designed. The process and the mathematical model of spin coating for CSS were analyzed. Difficulties for realizing the spin coater consist of the control of multi-axis motion precisely and collaboratively valves on/ff properly and real-timely. A flexible and well-behaved spinning motion system was achieved by tmeans of principal and subordinate CPUs control. The motion program for spin coating could be created and implemented automatically while the pressure and the valves were was watched and controlled in real time. Film coating and laser direct writing experiments on a CSS with aperture equals to 100 mm and radius equals to 370 mm were performed. Photoresist film with uniform thickness on CSS was obtained by selecting proper spin coating parameters such as rotational speed acceleration and viscosity of the photoresist. After development the section analysis by the atomic force microscope showed that photoresist film thickness was about 517 nm in the center and about 520 nm in the edge of substrate the film thickness error was within 1% and the line width was about 6.0 m with steep sides parallel each other. Experimental results indicate that uniform thickness of thin photoresist film has been coated on CSS by the spin coater which contributes to quality improvement of laser direct writing lines on CSS.

On the spectral radius of graphs with cut edges 期刊论文 OAI收割
LINEAR ALGEBRA AND ITS APPLICATIONS, 2004, 卷号: 389, 页码: 139-145
作者: Liu, HQ; Lu, M; Tian, F

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收藏 | 浏览/下载：9/0 | 提交时间：2018/07/30

spectral radius cut edge limit point