Some Effects of Ultrasonic Vibration on combined Electrical Discharge Machining and its Practical Use

Hirao, Atsutoshi; Tani, Takayuki; Mohri, Naotake; Saito, Nagao

doi:10.2493/jjspe.73.781

Cited by 6 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effects of ultrasonic vibration on the EDM process had been investigated from twenty years ago [1][2][3][4][5][6][7][8][9][10][11][12][13]. Some researchers have concluded that ultrasonic vibration can improve the material removal rate (MRR), and the tool wear ratio (TWR), but the surface roughness was not improved so much.…”

Section: Introductionmentioning

confidence: 99%

Comparing the Effects of Ultrasonic System of the EDM Process on Machining Cemented Carbide

Chongkolnee

Praneetpongrung

2019

MSF

View full text Add to dashboard Cite

This research aim to improve the machining properties of the EDM for cemented carbide. The new methods were designed and proposed to use the ultrasonic vibration technique. Two types of USEDM systems were produced. One had a low frequency of 29 kHz with a large vibration amplitude, while the other had a high frequency of 59 kHz with a small amplitude. The Cu-W tool electrode was synchronized with the devised vibration system, and several discharge generation conditions were carried out on the cemented carbide material. The results showed that the highest machining efficiencies were obtained from the ultrasonic low frequency of 29 kHz with a large vibration amplitude. The MRR, TWR and surface roughness of the ultrasonic low frequency with the large vibration amplitude were better than the high frequency system with the small amplitude system. It was clarified that the ultrasonic vibration with the large amplitude could assist the material removal behavior of the discharge.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparing the Effects of Ultrasonic System of the EDM Process on Machining Cemented Carbide

Chongkolnee

Praneetpongrung

2019

MSF

View full text Add to dashboard Cite

show abstract

“…Up to now, several methods were proposed in order to deal with the debris in the gap area in the EDM process. For example, the application of ultrasonic vibration to the tool electrode [2] and machining fluid [3] helps circulate the machining fluid and remove the debris from the gap area, and thus reduce short-circuits and abnormal discharges.…”

Section: Introductionmentioning

confidence: 99%

Study on Machining Characteristics of Ultrasonic Vibration Assisted Micro-EDM

Ichikawa

Natsu

2012

AMM

View full text Add to dashboard Cite

The existence of debris in the inter-electrode area in micro-EDM interrupts the machining process. Applying ultrasonic vibration to the machining fluid helps circulate the machining fluid and remove the debris from the gap area, and thus reduce short-circuits and abnormal discharges. In this study, the effect of applying ultrasonic vibration to machining fluid in micro-EDM was experimentally investigated. It was found that a significant increase in the machining speed was realized by applying ultrasonic vibration. Also, with the vibration of the machining fluid, micro-hole drilling with ultra-small discharge energy became possible.

show abstract

“…Their experiments were carried out with a positive polarity electrode and a frequency of ~25 kHz with an amplitude of ~5 flm. They obtained a material removal rate of 0.065 mm 3 /min at a discharge current of 11 A with an on time of 30 flS and an off time of 10 fls. This result was about a three-fold improvement over normal EDM.…”

Section: Introductionmentioning

confidence: 99%

Electrical Discharge Machining of Cemented Carbide with Combined Ultrasonic Complex Vibration - Effects of the gap distance -

2010

IJEM

View full text Add to dashboard Cite

In normal electrical discharge machining (EDM) of cemented carbide, the machining properties are inferior to other materials such as tool steel. To solve this problem, a new method is proposed using ultrasonic vibration techniques. A complex vibration system was applied to the tool electrode to obtain a higher material removal rate (MRR), a lower tool wear rate (TWR) and smooth surface roughness values. To obtain a fine surface, the experiments were carried out in the finishing condition in working oil. The effect of the ultrasonic amplitude was investigated for several gap distances. A negative polarity tool electrode was used for the tests. Discharge waveform patterns were observed and analyzed together with machining performance. In addition, the surface roughness of the EDM workpiece was measured. With a proper gap distance and ultrasonic vibration amplitude, machining performance was found to improve in comparison with conventional EDM methods.

show abstract

Some Effects of Ultrasonic Vibration on combined Electrical Discharge Machining and its Practical Use

Cited by 6 publications

References 1 publication

Comparing the Effects of Ultrasonic System of the EDM Process on Machining Cemented Carbide

Comparing the Effects of Ultrasonic System of the EDM Process on Machining Cemented Carbide

Study on Machining Characteristics of Ultrasonic Vibration Assisted Micro-EDM

Electrical Discharge Machining of Cemented Carbide with Combined Ultrasonic Complex Vibration - Effects of the gap distance -

Contact Info

Product

Resources

About