Zhang Qing, Zhang Song
Key Laboratory of High Efficiency and Clean Mechanical Manufacture of MOE, School of Mechanical Engineering, Shandong University, Jinan 250061, China.
Key National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China.
Materials (Basel). 2020 Mar 14;13(6):1323. doi: 10.3390/ma13061323.
Surface topography and roughness significantly affect the functional properties of engineering parts. In this study, a mathematical model simulating the surface topography in end milling is presented and verified by milling experiments. The three dimensional (3D) surface amplitude parameters (arithmetic average deviation and root mean square deviation ) of the milled surface were calculated by using the model and the effects of the product () and ratio () of radial depth of cut and feed per tooth on amplitude parameters were researched. To evaluate the lateral characteristics of the milled surface, one dimensional (1D) power spectral densities (PSD) along both feed and step-over direction were calculated and investigated. It was found that affects 1D PSD along both directions, whereas affects 1D PSD along the step-over direction. An angular spectrum, derived from the area power spectral density (APSD), was employed to research the spatial distribution of spectral energy on the milled surface. Furthermore, the influences of and on the PSD properties were researched. It was found that is the significant factor that influences the direction of surface energy spectrum distribution.
表面形貌和粗糙度显著影响工程零件的功能特性。在本研究中，提出了一种模拟端铣表面形貌的数学模型，并通过铣削实验进行了验证。利用该模型计算了铣削表面的三维（3D）表面幅度参数（算术平均偏差和均方根偏差），并研究了径向切削深度和每齿进给量的乘积（）和比值（）对幅度参数的影响。为了评估铣削表面的横向特性，计算并研究了沿进给和步距方向的一维（1D）功率谱密度（PSD）。结果发现，会影响两个方向上的1D PSD，而会影响步距方向上的1D PSD。利用从面积功率谱密度（APSD）导出的角谱来研究铣削表面上谱能量的空间分布。此外，研究了和对PSD特性的影响。结果发现，是影响表面能谱分布方向的重要因素。
