Problems During Milling and Roughness Registration of Free-form Surfaces

14th International Conference on Metrology and Properties of Engineering Surfaces

Rybicki, M.^1

Poznan University of Technology, Faculty of Mechanical Engineering, Piotrowo 3, 60-965 Poznan, Poland^1

关键词: Constant rotational speed;    Free-form surface;    Machined surface roughness;    Measurement range;    Milling methods;    Roughness parameters;    Surface curvatures;    Variable parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/483/1/012007/pdf
DOI  :  10.1088/1742-6596/483/1/012007

来源: IOP

【 摘 要 】

Finishing machining of free-form surfaces is usually performed using ball mills. Constant rotational speed n and feed rate per wedge in axis of the mill fz are applied most often for the whole surface. It causes long machining time and theoretical machined surface roughness Rzt heterogeneity. In the paper we propose a milling method with variable parameters n and fz which gives greater productivity and more homogenous roughness of free-form surfaces. Based on roughness parameter measurement of the samples, many problems have been enumerated: necessity of the surface curvature pre-filtering from primary profile, necessity of 2D roughness assessment in two perpendicular directions, requirement for a high vertical measurement range and special long tips in contact profilometers most often, roughness variability and necessity of milling technology knowledge, to find a region with maximal roughness.