Experimental Surface Roughness Dataset for CNC End Milling of Circular Arc Segments

This experimental dataset contains 30 surface profilograms comprising 178,711 measurement samples from 10 concave and convex R10 circular arc segments produced by CNC end milling of St3ps steel. The package provides original measured coordinates, R10-deviation and Gaussian-filtered roughness profiles, programmed cutting regimes, tool and workpiece metadata, Ra, Rq, Rp, Rv, Rt and five-section Rz research values, descriptive spatial FFT results, a reproduction script, and an interactive HTML viewer. The reported roughness parameters follow the documented research procedure and are not claimed as ISO 21920-conforming measurements. Author: Myhovych Artur Volodymyrovych. Corresponding author: [e-mail]. Affiliation: National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute” License: Creative Commons Attribution 4.0 International (CC BY 4.0).