Design and Model Analysis of Pulse Generator in Electrical Discharge Machines (EDM) System Using in the Laplace Transform

2016 ◽  
Vol 818 ◽  
pp. 106-111
Author(s):  
Fatemeh Karimi Pour ◽  
Azli Yahya ◽  
Mahrokh Bavandi ◽  
Ronia Tavakkoli ◽  
Dana Dehghani
Keyword(s):  
Electrical Discharge ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Pulse Discharge ◽  
Work Piece ◽  
Machining Processes ◽  
Power Generator ◽  
Generator Circuit ◽  
Pulse Power Generator ◽  
Edm Process

One of the latest non-traditional machining processes and controlled process is presented as Electrical Discharge Machining (EDM) that the pulsed electrical discharge is used to erode metal in a work piece. The voltage pulse discharge occurs when EDM pulsed power generator is applied on a workpiece. The discharge happens in a small gap between the work piece and the electrode. The important function of EDM is to obtain the output waveform parallel with the ideal EDM waveform. Additionally, the EDM design is according to the transistor kind pulse power generator circuit. The present paper seeks to discuss on the current modeling and voltage gap waveform intended for the system in EDM process. Based on the derived equation, the simulation is done using electrical model in Matlab Simulink software and circuit analysis in Lapels transform in EDM process.

Simulation and Analysis of RC Type Relaxation Power Generator for Electrical Discharge Machines (EDM) in Laplace Transform

2016 ◽  
Vol 818 ◽  
pp. 112-116
Author(s):  
Fatemeh Karimi Pour ◽  
Mahrokh Bavandi ◽  
Azli Yahya
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pulse Discharge ◽  
Pulsed Power ◽  
Work Piece ◽  
Machining Processes ◽  
Power Generator ◽  
Generator Circuit ◽  
Simulation Based ◽  
Pulsed Power Generator

Electrical discharge machining (EDM) is one of the earliest non-traditional machining processes and controlled process where pulsed electrical discharge is used to erode metal in a workpiece. EDM pulsed power generator applies voltage pulse discharge occurs in a small gap between the work piece and the electrode and removes the unwanted material from the parent metal through melting and vaporization. The essential requirement for EDM system is to obtain the output waveform similar to the ideal EDM waveform. This paper seeks to discuss on the design and simulation based on RC (resistance-capacitance) power generator circuit. Based on the findings of the study, from the equation gained, the simulation is constructed through using electrical model in Matlab Simulink software and circuit analysis in Lapels transform in EDM system process. Also this procedure simulated in Matlab software.

Model of Pulse Power Generator in Electrical Discharge Machining (EDM) System

2014 ◽  
Vol 554 ◽  
pp. 613-617 ◽  
Author(s):  
Minhat Ade Erawan ◽  
Azli Yahya ◽  
Khamis Nor Hisham ◽  
Ahmad Saudi Samosir ◽  
Muhammad Arif Abdul Rahim ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pulse Power ◽  
Dielectric Fluid ◽  
Work Piece ◽  
Power Generator ◽  
Essential Requirement ◽  
Generator Circuit ◽  
Pulse Power Generator ◽  
Traditional Manufacturing

Electrical discharge machining (EDM) is a non-traditional manufacturing process of removing material. EDM system consists of a shaped tool and the work piece, which are connected to a power supply and placed in a dielectric fluid. EDM pulse power generator applies voltage pulses between the electrode and workpiece to generate sparks through the gap. The essential requirement for EDM system is to obtain the output waveform similar to the ideal EDM waveform. The design is based on transistor type pulse power generator circuit. This paper discuss in modeling of current and voltage gap waveform for EDM system.

Control Strategy for Electrical Discharge Machining (EDM) Pulse Power Generator

2014 ◽  
Vol 554 ◽  
pp. 643-647 ◽  
Author(s):  
Minhat Ade Erawan ◽  
Khamis Nor Hisham ◽  
Azli Yahya ◽  
Andromeda Trias ◽  
Juli Purwanto Nugroho Kartiko ◽  
...  
Keyword(s):  
Power Supply ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pulse Power ◽  
Dielectric Fluid ◽  
Hard Material ◽  
Machining Processes ◽  
Power Generator ◽  
Pulse Power Generator ◽  
Control Feedback

Electrical Discharge Machining (EDM) is a advanced machine that can control electrical spark to erode metal on the workpiece. In manufacturing, EDM is used on hard material parts that are extremely difficult to machine by conventional machining processes. EDM system consists of a shaped tool and the work piece, which are connected to a power supply and placed in a dielectric fluid. EDM pulse power generator applies voltage and current pulses between the electrode and workpiece to generate sparks through the gap. To obtain the optimum metarial removal rate (MRR), a good alternative is to improve the gap voltage and gap current. A proposed solution to these issue is combining ultracapacitor bank to the main power supply circuit for EDM machines. The control feedback of this research is designed to make sure that the current on DC bus is maintained at current setting during the machining processes.

Parametric Approach Model for Determining Electrical Discharge Machining (EDM) Conditions: Effect of Cutting Parameters on the Surface Integrity

2009 ◽  
Vol 83-86 ◽  
pp. 725-737 ◽  
Author(s):  
Wissem Tebni ◽  
M. Boujelbene ◽  
E. Bayraktar
Keyword(s):  
Surface Integrity ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Cutting Parameters ◽  
Surface Damage ◽  
Machining Process ◽  
Work Piece ◽  
Machining Processes ◽  
Steel Maker ◽  
Edm Process

Electrical discharge machining (EDM) is one of the earliest non-traditional machining processes. EDM process is based on thermoelectric energy between the work piece and an electrode. There are various types of products which can be produced by using the EDM such as dies and moulds. Today many parts used in aerospace and automotive industry and also final processes of surgical components can be finished by EDM process. A simple and easily understandable model was proposed for predicting the relative importance of different factors (composition of the steels and Electro Discharge Machining processing conditions) in order to obtain an efficient pieces. A detail application on the tool steels machined by EDM was given in this study. This model is based on thermal, metallurgical and mechanical and also in situ test conditions. It gives detail information on the effect of electrochemical parameters on the surface integrity and sub-surface damage of the material (Heat Affected Zone, HAZ), the level of residual stresses, and the surface texture. This approach is an efficient way to separate the responsibilities of the steel maker and machining process designer for increasing the reliability of the machined structures.

Power Generator of Electrical Discharge Machining (EDM) System

2014 ◽  
Vol 554 ◽  
pp. 638-642
Author(s):  
Minhat Ade Erawan ◽  
Azli Yahya ◽  
Khamis Nor Hisham ◽  
Samion Syahrullail ◽  
Abu Bakar Zurkarmawan ◽  
...  
Keyword(s):  
Power Supply ◽  
Electrical Discharge ◽  
Material Removal ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Power Generator ◽  
Spark Erosion ◽  
Proper Power ◽  
Edm Process

Electrical Discharge Machining (EDM) is a non-conventional manufacturing process of removing materials. The uniqueness of EDM process is the removal of the unwanted materials without direct contact between the electrode and workpiece. EDM power generator provides power source of EDM system. It supplies voltage and current to produce spark erosion. Power supply and pulse generator are two important parts in EDM power generator. By choosing the proper power supply and pulse generator to the application, a great result for Material Removal Rate (MRR) can be achieved. Efficiency of EDM power generator depends on the configurations of power supply used. This study reviews and summarizes some previous development of EDM power generator and their effectiveness.

scholarly journals Review on Effects of Electrode in Electrical Discharge Machining Process

2021 ◽  
Vol 8 (5) ◽  
pp. 91-95
Author(s):  
Nayan J. Patel
Keyword(s):  
Electrical Discharge ◽  
Electrode Materials ◽  
Electrical Discharge Machining ◽  
Research Work ◽  
Vital Role ◽  
Machining Process ◽  
Process Selection ◽  
Machining Processes ◽  
Electrically Conductive ◽  
Edm Process

Electrical Discharge Machining is one of the non-conventional machining processes used for electrically conductive material. It is widely used for manufacturing complicated parts which are tough to be produced by conventional manufacturing processes. It is based on thermoelectric energy between workpiece and electrode. Metal is removed by melting and vaporizing because of spark occurs in the gap between electrode and workpiece. Workpiece and electrode must have electrically conductive to generate a spark. The performance of the EDM process is largely depends on the electrode. Electrode is considered as tool in EDM process. Selection of the electrode material plays vital role in the EDM process. Different electrode materials have different properties. Hence, the performance of the EDM process changes with different materials. Researchers have used different materials as electrode to investigate the effects of materials and to improve the performance of EDM process. This paper reviews the research work carried out in the field of materials and manufacturing methods for electrodes in EDM process. Keywords: [EDM, Electrodes, Materials, Manufacturing Process].

A REVIEW OF RECENT METHODS FOR TOOL WEAR REDUCTION IN ELECTRICAL DISCHARGE MACHINING

2020 ◽  
Vol 27 (12) ◽  
pp. 2030002 ◽  
Author(s):  
AMOLJIT SINGH GILL ◽  
SANJEEV KUMAR ◽  
JUJHAR SINGH ◽  
VIVEK AGGARWAL ◽  
SHUBHAM SHARMA
Keyword(s):  
Tool Wear ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Tool Electrode ◽  
Machining Processes ◽  
Dielectric Characteristics ◽  
Coated Tool ◽  
Ultrasonic Assisted ◽  
Edm Process

Electrical discharge machining (EDM) is one of the most explored nonconventional machining processes due to its ability to machine intricate shapes on conductive materials. However, tool wear is one of the major challenges in the EDM process as it directly affects the accuracy of machining, surface roughness, reproduction of geometrical characteristics on the workpiece and cost of the process. Lots of work have been done to minimize the tool wear by improving the discharge conditions by controlling the EDM process parameters, varying the dielectric characteristics, powder-mixed dielectric methods and ultrasonic-assisted methods. However, minimizing the tool wear by the above approaches also constrains the material removal rate from the workpiece and accuracy of the process. This review highlights the efforts done by the researchers to improve tool wear by recently developed techniques or modifications. Researches available in the field of using treated tool electrode, cooled tool electrode, coated tool electrode, noble tool materials and other techniques are highlighted.

Effect of Discharge Condition on Cavitations Behavior by Single Pulse Discharge

2012 ◽  
Vol 523-524 ◽  
pp. 951-956
Author(s):  
Yoshiaki Akematsu ◽  
Kazuro Kageyama ◽  
Naotake Mohri ◽  
Hideaki Murayama
Keyword(s):  
Optical Fiber ◽  
Discharge Current ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Pulse Discharge ◽  
Optical Fiber Sensor ◽  
Single Pulse ◽  
Vibration Sensor ◽  
Work Piece ◽  
Discharge Condition

This paper describes some experimental results on a fundamental phenomenon of the single pulse discharge. In electrical discharge machining (EDM), processing accuracy was effected by behaviors of fused material. Pressure was important for removing fused material. So, it was needed to clarify that the mechanism of pressure occurrence by electrical discharge. In this study, it was investigated that effect of discharge condition on cavitations behavior by single pulse discharge. Gap region medium viscosity was changed by medium and temperature. Electrical discharge current was changed by applied voltage. The optical fiber vibration sensor is located on an aluminum work-piece (cathode) plate. Pressure was measured by optical fiber sensor during single pulse discharge. As the results, burst acoustic emission (AE) wave was occurred during single pulse discharge. The occurrence of several times burst AE wave was caused by cavitations behavior. The condition on which bubble does not collapse has become apparent. It was found that cavitations behavior was mainly depended on discharge current except for the condition on which bubble does not collapse.

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