Transactions of Nanjing University of Aeronautics & Astronautics
Development and Prospectives of Ultra-High-Speed Grinding Technology
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Abstract:
Ultra-high-speed grinding (UHSG) is a significant and powerful machining method in view of the enhanced productivity and precision demands. Previous researches regarding formation mechanisms and crucial technologies are comprehensively and thoroughly summarized to highlight state-of-art technology of UHSG. On the basis of the interdependence between process and machine innovations, theoretically,grinding mechanisms in strain hardening, strain rate strengthening, thermal softening, size effect and process characteristics need more in-depth studies to clarify the dominance of UHSG. Technically, CFRP wheel integrating with the brazed bonding has a prominent advantage in bonding strength and grit's configuration over vitrified bonding, which would be superior in UHSG. Furthermore, external high pressure cooling combining with inner jet cooling methods, accompanied by scraper plates to alleviate the effect of air boundary, are crucial and practical measures for realizing effective cooling in UHSG. Grinding processes, especially those being related to grinding parameters and precise in-process measuring approaches, are also prerequisite for fitting and investigation of UHSG.
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