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在金刚石车削中,刀具与工件之间的相对振动会在加工表面上生成具有某种规律性的特征,并恶化表面质量.本文仿真了振动影响下的金刚石端面车削表面的成型,并研究了刀具与工件之间的相对振动对表面形貌的影响.传统的二维轮廓方法并不适用于整个表面特征的分析,只能采用径向、周向和进给螺旋方向的轮廓进行联合分析.采用由二维快速傅里叶变换推导得到的面域功率谱密度函数可以一次性描述加工表面的形貌,并依此形成了一种根据表面数据分析辨识刀具与工件之间相对振动的系统方法,拓展了面域方法在加工表面分析上的应用.最后,通过金刚石实际车削表面的分析验证了该方法的有效性.
In the diamond turning, the relative vibration between the tool and the workpiece will generate some regularity features on the machined surface and deteriorate the surface quality.This paper simulates the forming of diamond turning surface under the influence of vibration, And the workpiece on the surface morphology of the impact of the traditional two-dimensional contouring method is not suitable for the analysis of the entire surface features, only the radial, circumferential and feed spiral direction of the contour for joint analysis. The surface power spectral density function derived from the two-dimensional fast Fourier transform can describe the topography of the machined surface at one time and form a systematic method of identifying the relative vibration between the tool and the workpiece based on the surface data. This method expands the application of the area method in machining surface analysis.Finally, the effectiveness of this method is verified by the analysis of the actual turning surface of diamond.