Page 145 - Module DMV20173

7.0 NON CONVENTIONAL PROCESSES

10. Advantage of ultrasonic machining:

 Machining any materials regardless of their conductivity.

 USM apply to machining semi-conductor such as silicon, germanium etc.
 Especially, USM is suitable to precise machining brittle material.
 USM does not produce electric, thermal, chemical abnormal surface because it is not
by electric, thermal, chemical action but by mechanical mechanism.

11. Disadvantage of ultrasonic machining:

 UM has low material removal rate.
 Tool wears fast in UM.

 Machining area and depth is restraint in UM.

EXERCISE 7.5

Explain clearly the working principles of ultrasonic machining. Use sketches to
support your answer.

BPLK 177 DMV 20173