The tool, which is a negative of the workpiece, is vibrated at around 20KHz with and amplitude of between 0.013mm and 0.1mm in abrasive slurry at the workpiece surface.
Material removal is by 3 mechanisms:
- Hammering of grit against the surface by the tool.
- Impact of free abrasive grit particles (erosion).
- Parts are burr-free with no residual stresses,