usinage ultrasonique

Traductions

• anglais

  Auteur : Schuurmans Stekhoven, G., 1970

  Définition

  Removal of material by particles of abrasive that vibrate in a water slurry circulating through a narrow gap between the workpiece and a tool that oscillates at about 20,000 cycles per second; the tool reproduces its shapes in the workpiece, generally to an accuracy of ± 0.001 in., and sometimes to a tolerance of 0.0005 in. or less, without burrs; accuracy depends on the size of the tool, rigidity of the machine and the tool, temperature of the slurry, grit size, and the procedure for roughing and finishing.

  Note :

  Ultrasonic machining is used chiefly on hard, brittle materials that do not conduct electricity; however, it is used on both metals and nonmetals, and on ductile as well as brittle materials; it is particularly well suited to the production of relatively shallow, irregular cavities and is one of the few processes suitable for machining extremely fragile material, such as honeycomb; the main disadvantages of the process are low metal removal rate and high cost.

  Termes :

  1. ultrasonic machining
  2. usm