H.S. Lim

TL;DR: In this article, an optical sensor has been developed to measure and control the dimension of the thin electrode during the tool fabrication process, and the performance of the micro-EDM process is evaluated in terms of the material removal rate (MRR), tool wear ratio (TWR), and the stability of the machining.

TL;DR: In this paper, a single-spark generator has been developed to study the erosion characteristics from the microcrater size using a simple heat transfer model, the efficiency at different discharge condition is also deduced.

TL;DR: In this article, a tool-based micro-machining technology is developed to produce miniaturized parts and features using a multi-purpose miniature machine tool for hybrid processes which is developed at NUS.

TL;DR: In this article, the fundamental mechanism of ELID grinding was studied by conducting experiments to establish optimal grinding parameters to obtain better surface finish under various in-process dressing conditions, and the results showed that the cutting forces are unstable throughout the grinding process due to the breakage of an insulating layer formed on the surface of the grinding wheel; however, a smoother surface can be obtained using a high dressing current duty ratio at the cost of high tool wear.

TL;DR: In this paper, the influences of EDM pulse condition on the micro-EDM properties were investigated and the experimental results showed that the voltage and current of the pulse exert strongly to the machining properties and the shorter EDM pulses are more efficient to make a precision part with a higher material removal rate.