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- W2091978565 abstract "ABSTRACT CNC grinding technology is increasingly used in the manufacture of precision optical components. Grindingperformanceis strongly influenced by the interaction of the tool and workpiece surfaces on a microscale, which in turn isinfluenced by the structure (topography) of the two surfaces. Unfortunately, for tool surfaces in particular, relatively littlequantitative information has been available on the nature ofthe surfaces generated during actual grinding operations. Howeverwith the availability of advanced meirology techniques, such as optical profilometry and atomic force microscopy, it is nowpossible to produce detailed three-dimensional images of tool surfaces and from them to extract detailed quantitativeinformation about the surface and its evolution.In this paper we discuss the use of optical profilometry to quantitatively characterize the surface microstructure(topography) of composite diamond tools during grinding of optical glasses. As an alternative to measuring individualdiamond profiles, both the size and shape ofthe active diamonds on the tool surface may be evaluated by examination of theoverall bearing ratio of the surface. This is quicker and has the advantage of avoiding potential bias in the selection ofdiamonds to be measured. Use of a micro-marker technique to precisely measure bond wear rate from a series of surfaceimages using a micro-marker technique is also demonstrated. Grinding performance is dependent on the process conditions,but is also found to be correlated with the tool's surface structure. Moreover since the tool surfaceevolves during grinding, acomplex relationship between the process and performanceis produced. Bond wear is found to play an important role inmaintaining grinding performance. Process conditions which produce a steady bond wear rate aid m establishing a quasi-equilibrium state (self-sharpening) under which grinding performance can be maintained indefinitely.keywords: grinding, optical grinding, optical glass, grinding energy, Preston, topography, diamond, abrasive, wear" @default.
- W2091978565 created "2016-06-24" @default.
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- W2091978565 date "1999-11-11" @default.
- W2091978565 modified "2023-09-23" @default.
- W2091978565 title "<title>Quantifying the effects of tool and workpiece surface evolution during microgrinding of optical glasses</title>" @default.
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- W2091978565 doi "https://doi.org/10.1117/12.369193" @default.
- W2091978565 hasPublicationYear "1999" @default.
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