CAJ | 학술논문

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.
재금강석차삭중,도구여공건지간적상대진동회재가공표면상생성구유모충규률성적특정,병악화표면질량.본문방진료진동영향하적금강석단면차삭표면적성형,병연구료도구여공건지간적상대진동대표면형모적영향.전통적이유륜곽방법병불괄용우정개표면특정적분석,지능채용경향、주향화진급라선방향적륜곽진행연합분석.채용유이유쾌속부리협변환추도득도적면역공솔보밀도함수가이일차성묘술가공표면적형모,병의차형성료일충근거표면수거분석변식도구여공건지간상대진동적계통방법,탁전료면역방법재가공표면분석상적응용.최후,통과금강석실제차삭표면적분석험증료해방법적유효성.
In diamond turning,the inevitable vibratory motion between the tool and workpiece generates regular features on the machined surface and deteriorates the surface quality. The simulation of surface generation in diamond turning was proposed to investigate the influence of the tool-workpiece relative vibratory motion on the surface topography. Comparatively speaking, the profile method, which is a two-dimentional traditional method, is not competent for the overall surface characteristic. In this trying situation, there is no choice but employing radial, circular and spiral profiles to describe the surface. Areal power spectral density (APSD) evolved from two-dimensional fast Fourier transform (2D FFT) algorithm was presented to analyze the whole surface topography. Furthermore, a systematic approach based on APSD was employed to identify the composition of the tool-workpiece relative vibratory motions with the surface data analysis. The application of APSD on vibration detection extends the areal methodology of surface analysis. Finally, the proposed method is tested and verified through the real diamond turned surfaces.