Compilation method of CNC lathe cutting force spectrum based on kernel density estimation of G-SCE

The cutting force spectrum of the CNC lathe is basic data for reliability design, test, and evaluation its components. Due to complex changeable turning conditions different processes, load presents multi-peak characteristics. At same time, grouping counted cycles when parameter modeling will produce certain errors. As a result, distribution model cannot meet requirements. Thus, compilation method based on kernel density estimation (KDE) goodness-smoothness comprehensive (G-SCE) proposed. KDE used establish dynamic in which not needed. For bandwidth-determining methods, rule thumb (ROT) least-squares cross-validation (LCV) do take into account influence bandwidths goodness smoothness estimated curve, G-CSE proposed determining optimal bandwidth. It includes accuracy test multiple goodness-of-fit tests envelope entropy comprehensively weights index determine results case analysis indicate that can solve problem too large error multimodal distribution. it better evaluate under bandwidths. In short, new bandwidth selection original method.