TY - JOUR N2 - In this paper, an analysis of various factors affecting machined surface texture is presented. The investigation was focused on ball end mill inclination against the work piece (defined by surface inclination angle a. Surface roughness was investigated in a 3D array, and measurements were conducted parallel to the feed motion direction. The analysis of machined surface irregularities as a function of frequency (wavelength A), on the basis of the Power Density Spectrum - PDS was also carried out. This kind of analysis is aimed at valuation of primary factors influencing surface roughness generation as well as its randomness. Subsequently, a surface roughness model including cutter displacements was developed. It was found that plain cutting with ball end mill (surface inclination angle a= 0°) is unfavorable from the point of view of surface roughness, because in cutter’s axis the cutting speed vc ~ 0 m/min. This means that a cutting process does not occur, whereas on the machined surface some characteristics marks can be found. These marks do not appear in case of a* 0°, because the cutting speed vc * 0 on the fill I length of the active cutting edge and as a result, the machined surface texture is more homogenous. Surface roughness parameters determined on the basis of the model including cutter displacements are closer to experimental data for cases with inclination angles a* 0°, in comparison with those determined for plain cutting (a= 0°). It is probably caused by higher contribution in surface irregularities generation of plastic and elastic deformations cumulated near the cutter’s free end than kinematic and geometric parameters, as well as cutter displacements. L1 - http://journals.pan.pl/Content/90231/PDF/Journal10178-VolumeXXI%20Issue1_14.pdf L2 - http://journals.pan.pl/Content/90231 PY - 2014 IS - No 1 EP - 156 DO - 10.2478/mms-2014-0014 KW - surface texture KW - ball end milling KW - hardened steel A1 - Wieczorowski, Michał A1 - Wojciechowski, Szymon A1 - Twardowski, Paweł PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2014 T1 - SURFACE TEXTURE ANALYSIS AFTER BALL END MILLING WITH VARIOUS SURFACE INCLINATION OF HARDENED STEEL SP - 145 UR - http://journals.pan.pl/dlibra/publication/edition/90231 T2 - Metrology and Measurement Systems ER -