Results 211 to 220 of about 3,504 (250)
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Ultra-precision grinding of structural ceramics by electrolytic in-process dressing (ELID) grinding
Journal of Materials Processing Technology, 1996Abstract Advanced structural ceramics, such as silicon nitride based materials, are of interest because of their unique physical and mechanical properties. However, the cost of grinding these ceramics, which is an integral part of their fabrication, is very high.
H. Ohmori +2 more
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Mechanism and experimental research on ultra-precision grinding of ferrite
SPIE Proceedings, 2017Ultra-precision grinding of ferrite is conducted to investigate the removal mechanism. Effect of the accuracy of machine tool key components on grinding surface quality is analyzed. The surface generation model of ferrite ultra-precision grinding machining is established.
Xinxing Ban +5 more
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Origin, modeling and suppression of grinding marks in ultra precision grinding of silicon wafers
International Journal of Machine Tools and Manufacture, 2013Abstract A phenomenon commonly encountered in grinding of silicon wafers is the grinding marks, which are difficult to remove by subsequent polishing process, and have been a great obstacle to the manufacture of silicon wafers with higher flatness. In this paper, the grinding marks formation mechanism was clarified, a grinding marks formation model ...
F.W. Huo, R.K. Kang, Z. Li, D.M. Guo
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Research of the Grinding Mode Applied by the Cranfield BoX Ultra Precision Grinding Machine
Advanced Materials Research, 2013In this paper an efficient grinding mode which is employed by the Cranfield BoX ultra precision grinding machine is discussed. The equations of workpiece surface and grinding wheel surface are proposed and the grinding motion is simulated via Matlab. The trajectory of the changing cutting region is discussed.
Zhuang De Jiang +4 more
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Ultra-precision grinding of transparent AlON optical window
Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019A series of ultra-precision grinding experiments were carried out on transparent AlON ceramic. The grinding parameters (wheel speed, workpiece speed, feedrate and depth of grinding) were optimized by studying the influence of process parameters on surface quality.
Chunyu Zhang +4 more
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Big OptiX ultra precision grinding/measuring system
SPIE Proceedings, 2005Many hundreds of mirror segments of 1-2 metre size will be needed to realise the next generation ground based extra large telescopes (ELTs). This paper introduces the design of a new ultra precise large optics grinding machine; Big OptiX or simply 'BOXTM'.
P. Shore +7 more
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Inclined Axis Ultra-Precision Grinding for Spherical Surface
Solid State Phenomena, 2011Through establishing the mathematical models of velocity and grinding force to optimize the installation angle with inclined axis grinding technology, the spherical surface of the ultra-hard alloy material was ground by formed electroplated diamond wheel.
Shao Hui Yin +6 more
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Fabrication of Micro V-Grooves in Ultra-Precision Grinding
Key Engineering Materials, 2016Ultra-precision grinding is an effective method to machine the optical micro v-groove, which is one of microstructures applied to the fiber-optics connectors, displays and other photonics devices. The ultra-precision grinding technology directly obtains high surface quality for brittle materials when the grinding process is under the ductile mode. This
Ze Qin Lin, Su Juan Wang, Xin Du Chen
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Influence of Kinematic Characteristics on Grinding Ultra-Precision Substrates
Manufacturing Science and Engineering, 1999Abstract This study concerns with the kinematic characteristics of grinding ultra-precision substrate with the rotary-table vertical-spindle surface grinder. The relative position, velocity, acceleration of single grain on cup-wheel traveling along the substrate have been calculated and studied.
Pei-Lum Tso, Chieng-Chung Teng
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Key Engineering Materials, 2014
The manufacturing of molds with diffractive structures requires new approaches in terms of grinding wheel geometry and preparation. To be able to manufacture small geometric features such as widths and depths in the micron range on the mold, ideally sharp edged grinding wheels should be used.
Thomas Bletek +3 more
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The manufacturing of molds with diffractive structures requires new approaches in terms of grinding wheel geometry and preparation. To be able to manufacture small geometric features such as widths and depths in the micron range on the mold, ideally sharp edged grinding wheels should be used.
Thomas Bletek +3 more
openaire +1 more source