Abstract
Ultrasonic and acoustic axial spindle oscillations improve the productivity and product quality in machining, reduce the cutting forces, and increase the tool life in the grinding, milling, and boring of structural components, including those made from materials that are hard to machine. Industrial prototypes of motorized spindles with axial spindle oscillations have been developed by specialists at Siberian Federal University and AO NPP Radiosvyaz and patented in Russia. These spindle units include contactless hydrostatic bearings, a resonant-frequency generator (a piezo generator for ultrasonic spindles and a hydromechanical generator for acoustic spindles), and a local concentrator for the spindle’s longitudinal intrinsic waves.
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