METHOD OF MACHINING

摘要

A method of machining a hard material workpiece using a tool, including the steps of: i) obtaining a vibration function, a? (p), for the tool-workpiece combination, where the vibration function, a? (p), relates one or more indicators of vibration levels during machining to machining parameters, p, for a given orientation, ?, of the tool, relative to a feed direction of the workpiece relative to the tool during machining; ii) determining a vibration level threshold, a?max, of the vibration function, a? (p), to establish values of the machining parameters, p, that correspond to amplitudes of a first selected one of the one or more vibration level indicators wherein the amplitudes are less than or equal to the vibration level threshold, a?max; and iii) machining the workpiece with the tool at the established values of the machining parameters so that the amplitude of the first selected vibration level indicator remains at or below the vibration level threshold, a?max; wherein the step of obtaining the vibration function, a? (p), includes the steps of: A) obtaining a segmentation frequency function, seg (p), for the tool- workpiece combination for machining parameters, p; B) obtaining a plurality of frequency response functions (FRFs) for the tool-workpiece combination in a plurality of orientations over a frequency range that includes at least the fundamental frequencies of vibration of the tool and the workpiece; C) calculating a vibration function, a? (p), for the tool-workpiece combination for machining parameters, p, wherein the vibration function, a? (p), is a function of the segmentation frequency, seg (p), and the FRFs.