Evaluation of superabrasive grinding points for the machining of hardened steel

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  • Rolls Royce PLC


Small diameter grinding points offer greater flexibility for machining free-form contours compared to traditional grinding wheels, despite fewer effective cutting edges. The paper evaluates the influence of grit size (B32, B46, B76), feed rate (125, 250 mm/min) and depth of cut (20, 40 μm) when machining D2 tool steel using electroplated CBN grinding points. Highest G-ratios (∼2441) were obtained using B32 tools with corresponding workpiece surface roughness (Ra) of ∼0.8 μm after ∼6000 mm 3 material removed, due to the greater number of effective cutting edges. Attritious wear was the primary wear mechanism although material loading was observed with B76 tools.


Original languageEnglish
Pages (from-to)329-332
Number of pages4
JournalCIRP Annals
Issue number1
Early online date2 Jul 2019
Publication statusPublished - 4 Jul 2019


  • Cubic boron nitride (CBN), Grinding, Wear