Effect of low-frequency vibration on workpiece in EDM processes

High-frequency vibration aided EDM has become one of the ways to increase material removal rate in EDM process, due to the flushing effect caused by vibration. However, utilizing high-frequency vibration, especially in ultrasonic range consumes a lot of setup cost. This work presents an attempt to use a low-frequency vibration on workpiece of stainless steel (SS 304) during EDM process. The workpiece was vibrated with variations of low-frequency and low-amplitude. The results show that the application of low-frequency vibration in EDM process can be used to increase the material removal rate, and decrease the surface roughness and tool wear rate

On a Method to Obtain Damping Ratios by the Power Spectrum of Impulse Response

特集：都市における災害・公害の防除に関する研

Study on the effect of nano and micro MoS2 powder in micro-electrical discharge machining

The application of powder mixed dielectric to improve the efficiency of electrical discharge machining (EDM) has been acknowledged extensively. However, the study of micro-size powder suspension in micro-EDM field is still limited. In this research, nano and micro size powder of MoS2 were used as catalyst agent. Powder suspension in different size was able to provide significant improvement in material removal rate and surface quality to increase the efficiency in mu-EDM processes

Basic Experiment on the Effect of Relative Displacement Between Tool and Work of Machine Tool on Surface Finish

特集：工業用材料の生産・加工システムの最適