Ultrasonic machining (USM)

Ultrasonic machining process schematic

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:

  1. Hammering of grit against the surface by the tool.
  2. Impact of free abrasive grit particles (erosion).
  3. Micro-cavitation.

Typical Uses for Ultrasonic Machining

Design guidelines

Process variations

Tradenames/alternative names

The environment

The economics

Technical notes