Download or read book Modeling and Experimental Investigation of Spindle Dynamic Errors and Surface Generation in Ultra-precision Diamond Turning written by Peng Huang and published by . This book was released on 2016 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the second part, a comprehensive dynamic surface generation model with consideration of the spindle dynamics, cutting mechanism and machining error is proposed. Firstly, an algorithm for the cutting force calculation and surface generation is developed. This algorithm takes into account the effect of minimum chip thickness and elastic recovery. A groove cutting experiment was conducted to verify the effectiveness of the algorithm. The experimental results indicate that the algorithm is capable of addressing the minimum chip thickness and elastic recovery in the micro cutting process. This algorithm is integrated into the comprehensive dynamic surface generation model. The simulated and measured surface topographies indicate that the low frequency enveloping phenomenon due to double frequency vibration of the spindle has a significant effect on the surface topography. The surface topography in cylindrical turning changes with different spindle speeds, even though the feed rate per revolution remains unchanged. In ultra-precision machining, the requirement of ultra-high machining accuracy and ultra-smooth surface roughness makes the effects of spindle errors on form accuracy and surface finish of machined components highly significant, even though the spindle errors can be down to the nanometric range. Thus, it is very significant for this research to investigate the effect of spindle errors on machining accuracy and surface roughness with experimental and theoretical methods. Based on the investigation, the spindle unbalance induced eccentricity, double frequency vibration, as well as the position drift of the AAL of the ABS have been identified. The development of the comprehensive dynamic surface generation model with consideration of spindle dynamics, effect of tool edge radius and machining error can enable optimization of the cutting conditions in ultra-precision diamond turning.