Abstract
The rapid wear of the dressing tools severely limits the further improvement of the truing accuracy and dressing sharpness of the arc-shaped diamond wheels used in ultra-precision grinding. This paper thoroughly investigated the wear characteristics of electroplated diamond dressing wheels used for on-machine precision truing of arc-shaped diamond wheels. Firstly, wear topography and protrusion height of the diamond particles were researched. Secondly, the wear evolution mechanism of diamond particles with different grain sizes was systematically researched. Then, the wear mechanism of the metal bonded matrix was studied. Subsequently, the Raman spectrum analysis of diamond particles before and after wear was carried out. Finally, the profile accuracy and surface topography of the trued arc-shaped diamond wheel were evaluated for distinguishing the wear resistance and sharpening performance of the electroplated diamond dressing wheels with different grain sizes.
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