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Title: A study of Elliptical Vibration Cutting in Ultra Precision Machining
Keywords: Elliptical vibration cutting, Ultra precision machining, Transient cutting force, Surface generation, Tool wear
Issue Date: 10-Jul-2012
Citation: ZHANG XINQUAN (2012-07-10). A study of Elliptical Vibration Cutting in Ultra Precision Machining. ScholarBank@NUS Repository.
Abstract: As a novel 2D vibration-assisted machining method, elliptical vibration cutting (EVC) has received a lot of attention for better machining performances. However, very few in-depth experimental and analytical studies have been conducted on its transient cutting force, surface generation and tool wear mechanism. Therefore, this study has been carried out in three main phases. Firstly, an analytical force model is developed for understanding cutting mechanics and accurate prediction of transient cutting force, where transient thickness of cut and transient shear angle are considered. Secondly, surface generation in EVC is experimentally investigated, and a comprehensive calculation method is developed for determining the theoretical roughness considering tool edge radius. Thirdly, PCD tools are used to machine hardened steel with ultrasonic EVC method to investigate the effects of machining parameters on cutting performances. Then, by modelling cutting energy consumption and measuring workpiece temperature, reasonable reasons are proposed for the tool wear suppression mechanism.
Appears in Collections:Ph.D Theses (Open)

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