Modal Analysis of Wire Electrode Vibration in Wire-EDM.

Ultrasound influence on the erosive capacity at the electrodischarge processing with ultrasonic activated wire electrode in a single point

“…For n vibration modes, the antinodes number is equal to n. In the fundamental case for mode of vibration n = 1, we have one antinode and two nodes. In this situation, the corresponding position of maximum amplitude is at half of the wire electrode length l; knowing that the velocity for wave propagation in the wire electrode is, after Yamada et al [27]:…”

“…In accordance with Nani [17] and Yamada et al [27], the ultrasonic activation into a single point of the wire electrode was done in two ways: activating the guiding element GE 2 from the Mobile arm and activating the guiding element GE 1 from the Fixed arm. Each mode corresponds to two distinct situations: ultrasonic activation of the wire electrode is carried out after its feed direction, respectively perpendicular to its feed.…”

On the influence of cutting speed limitation on the accuracy of wire-EDM corner-cutting

“…In the work [7] the natural frequencies of the system are calculated using a basic free vibration model of the wire hold by the ends. Experimental modal analysis has also been used [8] for the characterisation of the dynamic behaviour of the wire. In a later work [9], modelling and analysis of wire vibration is also addressed.…”

A computer-aided system for the optimization of the accuracy of the wire electro-discharge machining process

“…Based on this approach, the practical application of a real-time control system is presented. Experimental modal analysis has also been used (Yamada et al 1997) for the characterization of the dynamic behaviour of the wire. In a later work (Han et al 2002) the influence of electrostatic force on the machining characteristics in WEDM has been analysed.…”