Abstract
Mathematical modeling of removal dwell near the edge is presented in this chapter. The edge problem was solved for a range of tool sizes and path pitches. Based on the simulation results, optimizing dwell strategies for various ratios of the tool size and path pitches were analyzed, and the effectiveness of reducing the tool size and path pitch on reducing the edge error was examined, and data extension algorithms were theoretically researched to obtain an ideal solution to suppress the edge effect. Further work dedicates to modify the pressure distribution model by finite element analysis to make the removal shape of emulation tool influence functions (e-TIFs) more close to practical tool influence functions (p-TIFs), and predict the practical removal rate of e-TIFs by reverse-calculating the material removal of a prefinishing process to the formal workpiece. Process experiments were then included on the use of small tools for edge rectification. The pressure shows a nonlinear relation to the radial distance rather than average distribution model. The maximal deviation of emulational removal shape to the practical removal shape of TIF spot was experimental validated to be less than 5 %.
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Cheng, H. (2015). Prediction on Dwell Effects and Nonlinear Pressure Distribution. In: Pose-varied Multi-axis Optical Finishing Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44182-4_4
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DOI: https://doi.org/10.1007/978-3-662-44182-4_4
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