Research on non-contact ultrasonic vibration assisted rotating electrical discharge machining (EDM) machine tool

2021 ◽  
Vol 17 (1) ◽  
pp. 1
Author(s):  
Dong Yinghuai ◽  
Song Jianbao ◽  
Xue Wei ◽  
Wang Yan ◽  
Li Guangyan
Keyword(s):  
Machine Tool ◽  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining

Research on non-contact ultrasonic vibration assisted rotating electrical discharge machining (EDM) machine tool

2021 ◽  
Vol 17 (1) ◽  
pp. 1
Author(s):  
Dong Yinghuai ◽  
Song Jianbao ◽  
Li Guangyan ◽  
Wang Yan ◽  
Xue Wei
Keyword(s):  
Machine Tool ◽  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining

Experimental Research on Small Holes by Electrical Discharge Machining Combined with Ultrasonic Vibration and Assisted Inwall Polish with the Ultrasonic Vibrating

2007 ◽  
Vol 359-360 ◽  
pp. 374-378
Author(s):  
Ming Rang Cao ◽  
Shi Chun Yang ◽  
Wen Hui Li ◽  
Sheng Qiang Yang
Keyword(s):  
Surface Roughness ◽  
Machine Tool ◽  
Surface Quality ◽  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Small Hole ◽  
Tool Electrode ◽  
One Machine

The EDM can machined some superhard conducting material that cannot be handled by the traditional method, such as carbide alloy, tool steel and engineering materials etc., however, it is also accompanied with slow material removal rate(MRR) and poor surface quality (surface roughness). For some fine machining having rigorous criterion on size and surface roughness, the EDM cannot meet the demand. Some researches indicate that the MRR of small hole by electrical discharge machining combined with ultrasonic vibration (UEDM) can increase in certain range, but the surface quality is still poor. Although there are lots of the researches on the UEDM, some debates on machining mechanism and applied scope existed, and technology of UEDM needs the further study. After small hole machined by the UEDM, it is polished by ultrasonic vibrating. Two steps are includes in this technology. In the first place, on a high velocity electro discharge small hole machine with high-pressure dielectric liquid and hollow electrode, a transducer and horn are attached between the spindle and the electrode. The ultrasonic vibration of the tool electrode is implemented by connecting the horn and the tool electrode together with a chucking appliance. The second, after the small hole is complete, with the same machine tool and tool electrode the process of polishing the inwall of the small hole is carried out by accompanying the ultrasonic vibration, revolution and feed of the tool electrode with the abrasive material. In the experiments, the reference point for UEDM is found and the new theory is proposed to explain the increase of the MRR and the decrease of the surface roughness value .The polish with the ultrasonic vibration can improve further the surface roughness. The ultrasonic vibrating polish after the hole by UEDM is an economical and effective technology, which realizes machining of two procedures in one machine tool. So the process for changing machine tool and tool is not needed any more and the efficiency is further improved.

Optimization of μEDM process assisted with rotating magnetic pulling force and ultrasonic vibration

2021 ◽  
pp. 095440892098440
Author(s):  
Gurpreet Singh ◽  
DR Prajapati ◽  
PS Satsangi
Keyword(s):  
Ultrasonic Vibration ◽  
Material Removal Rate ◽  
Electrical Discharge ◽  
Material Removal ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Machining Process ◽  
Micro Electrical Discharge Machining ◽  
Pulling Force ◽  
Tool Rotation

The micro-electrical discharge machining process is hindered by low material removal rate and low surface quality, which bound its capability. The assistance of ultrasonic vibration and magnetic pulling force in micro-electrical discharge machining helps to overcome this limitation and increase the stability of the machining process. In the present research, an attempt has been made on Taguchi based GRA optimization for µEDM assisted with ultrasonic vibration and magnetic pulling force while µEDM of SKD-5 die steel with the tubular copper electrode. The process parameters such as ultrasonic vibration, magnetic pulling force, tool rotation, energy and feed rate have been chosen as process variables. Material removal rate and taper of the feature have been selected as response measures. From the experimental study, it has been found that response output measures have been significantly improved by 18% as compared to non assisted µEDM. The best optimal combination of input parameters for improved performance measures were recorded as machining with ultrasonic vibration (U1), 0.25 kgf of magnetic pulling force (M1), 600 rpm of tool rotation (R2), 3.38 mJ of energy (E3) and 1.5 mm/min of Tool feed rate (F3). The confirmation trail was also carried out for the validation of the results attained by Grey Relational Analysis and confirmed that there is a substantial improvement with both assistance applied simultaneously.

Study on technology of ultrasonic vibration aided electrical discharge machining in gas

2004 ◽  
Vol 149 (1-3) ◽  
pp. 640-644 ◽  
Author(s):  
Q.H. Zhang ◽  
J.H. Zhang ◽  
S.F. Ren ◽  
J.X. Deng ◽  
X. Ai
Keyword(s):  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining

Machining Deep Micro Holes by EDM with USM in Inversion Installing

2009 ◽  
Vol 626-627 ◽  
pp. 321-326
Author(s):  
Bao Xian Jia ◽  
D.S. Wang ◽  
Jing Zhe Guo
Keyword(s):  
Aspect Ratio ◽  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Structural Features ◽  
Ultrasonic Machining ◽  
Micro Holes ◽  
Exploratory Experiment ◽  
A New Technique ◽  
Working Liquid

In order to obtain micro holes with high aspect ratio, a new technique of machining deep micro holes by combining EDM (Electrical Discharge Machining) with USM (Ultrasonic Machining) in inversion installing is researched. The workpiece is over the electrode. The ultrasonic vibration is affixed to the electrode. The workpiece and electrode are all immersed in working liquid. The debris generated by EDM is dropped out the hole from the gap between the electrode and the hole wall by the gravity and the pumping effect of ultrasonic vibration, so as to increasing the machining velocity and machined depth. The structural features of the machining device are described, and the exploratory experiment is carried out. The corresponding process relations are found out, which can provide references for further study of this technique. The micro holes with larger than 25 in aspect ratio are machined.

Optimisation strategies in ultrasonic vibration assisted electrical discharge machining: a review

2017 ◽  
Vol 7 (1) ◽  
pp. 51 ◽  
Author(s):  
Sanjay Kumar ◽  
Sandeep Grover ◽  
R.S. Walia
Keyword(s):  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining

Ultrasonic vibration electrical discharge machining in gas

2002 ◽  
Vol 129 (1-3) ◽  
pp. 135-138 ◽  
Author(s):  
Q.H Zhang ◽  
J.H Zhang ◽  
J.X Deng ◽  
Y Qin ◽  
Z.W Niu
Keyword(s):  
Ultrasonic Vibration ◽  
Electrical Discharge ◽  
Electrical Discharge Machining
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