Abstract
Within important wire electrical discharge machining (WEDM) performance parameters, the discharge energy is a key factor influencing the workpiece material removal rate and surface integrity characteristics. Thus, the monitoring of electric voltage and discharge current waveforms in real situations of WED-Machining is a suitable method to the evaluation and control of process behavior. In this paper, an automated test system especially designed to acquire electric voltage and current data is presented. It consists of a computer-based instrumentation system interfaced to a high performance hardware, a LabVIEW™ software application and a special apparatus for in situ current measurement. It executes signal-processing tasks and presents relevant information, such as total energy transfer and average discharge duration. It is concluded that the automated test system enabled the execution of WEDM experiments with a nearly human-free intervention procedure, through which an evaluation of the process performance in different discharge durations was carried out.
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References
Rajurkar KP, Sundaram MM, Malshe AP (2013) Review of electrochemical and electrodischarge machining. Procedia CIRP 6:13–26
Masuzawa T (2001) Micro-EDM. In: Proceeding of 13th symposium for electromachining—ISEM XIII, 1: 3–18
Scott D, Boyina S, Rajurkar KP (1991) Analysis and optimization of parameter combination in wire electrical discharge machining. Int J Prod Res 29:2189–2207
VEREIN DEUTSCHER INGENIEUR (1990) Elektroerosive bearbeitung : definitionen und terminologie, vol 2. VDI, Düsseldorf
Ho KH, Newman ST, Rahimifard S, Allen RD (2004) State of the art in wire electrical discharge machining (WEDM). Int J Mach Tools Manuf 44:1247–1259
Liao YS, Woo JC (1997) The effects of machining settings on the behavior of pulse trains in the WEDM process. J Mater Process Technol 71:433–439
König W, Klocke F (1997) Fertigungsverfahren-3: abtragen und generieren. Springer, Berlin
Cabanes I, Portillo E, Marcos M, Sánchez JA (2008) On-line prevention of wire breakage in wire electro-discharge machining. Robot Comput-Integr Manuf 24:287–298
Kunieda M, Lauwers B, Rajurkar KP, Schumacher BM (2005) Advancing EDM through fundamental insight into the process. CIRP Ann Manuf Technol 54:599–622
Mahapatra SS, Patnaik A (2006) Parametric optimization of wire electrical discharge machining (WEDM) process using Taguchi method. J Braz Soc Mech Sci Eng 4:422–429
Mendes LA, Back N, Oliveira GHC (2009) Designing automated test systems: an adapted methodology inspired on Pahl and Beitz’s systematic approach. Robot Comput-Integr Manuf 25:945–950
Amorim F, Teixeira C (2005) Eletroerosão por fio de metal duro utilizado para ferrramentas de estampagem. In: Proceedings of the 3rd Brazilian congress of fabrication engineering 1: 1–9
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Technical Editor: Alexandre Mendes Abrao.
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Mendes, L.A., Amorim, F.L. & Weingaertner, W.L. Automated system for the measurement of spark current and electric voltage in wire EDM performance. J Braz. Soc. Mech. Sci. Eng. 37, 123–131 (2015). https://doi.org/10.1007/s40430-014-0171-x
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DOI: https://doi.org/10.1007/s40430-014-0171-x