GEOMETRICAL APPROACH FOR REDUCTION OF TOOL SHAPE DEGENERATION IN ELECTRIC DISCHARGE MACHINING (EDM)

Date

2012-01-01

Author

Cogun, Can
Deniz, Tayfun Caglar
Kucukturk, Gokhan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

151
views

0
downloads

In this study, the geometric wear characteristics of tool electrodes were obtained for various pulse time, discharge current and machining depth settings in electric discharge machining. Different forms of protrusions were machined on the front surface of the tool to reduce the geometric wear. Significant reductions in original tool geometric wear characteristics (front wear, side wear and edge wear) were obtained with the use of square cross-section protrusions. The dimensions of the square cross-section protrusions were modeled mathematically in terms of machining parameters used in the experiments.

Subject Keywords

Electric discharge machining, Tool geometric wear, Tool shape degeneration

URI

https://hdl.handle.net/11511/67175

Journal

MACHINING SCIENCE AND TECHNOLOGY

DOI

https://doi.org/10.1080/10910344.2012.699369

Collections

Department of Mechanical Engineering, Article

Suggestions

OpenMETU
Core

Micro processing by intense fast electron beam Goktas, H; Kirkici, H; Oke, G; Udrea, M (2001-06-22) Generation of intense electron beams by superposing two discharges, namely a low pressure do glow discharge and a high current pulsed discharge at pressures and voltages very similar to that of the pseudo-spark gap devices, has been reported previously [1, 2]. The small diameter, high peak current and short pulse length are the characteristics of the electron beam generated using this technique. In this technique, no high vacuum facilities are necessary, and many applications such as micro processing, X-ray...
Theoretical and experimental investigation of residual stresses in electric discharge machining Ekmekçi, Bülent; Erden, Abdülkadir; Department of Mechanical Engineering (2004) Electric Discharge Machining (EDM) is a process for eroding and removing material by transient action of electric sparks on electrically conductive materials immersed in a dielectric liquid and separated by a small gap. A spark-eroded surface is a surface with matt appearance and random distribution of overlapping craters. It is mechanically hard and stressed close to ultimate tensile strength of the material and sometimes covered with a network of micro cracks. The violent nature of the process leads a uni...
Single discharge thermo-electrical modeling of micromachining mechanism in electric discharge machining Sarikavak, Yasin; Cogun, Can (2012-05-01) In this study, single discharge thermo-electrical model of workpiece material removal in electrical discharge machining (EDM) was developed. Developed model includes generation of energy in liquid media, variation of plasma channel radius and transfer of heat from the channel by the electrical discharge. Effect of generated energy in plasma channel on workpiece removal was theoretically investigated by using different experimental parameters used in literature. The developed model finds the temperature dist...
Investigation of nonlinear oscillations in the gas discharge-semiconductor system: effect of different fluid modelling approaches Yeşil, Cihan; Rafatov, İsmail; Department of Physics (2018) The work deals with the study of nonlinear oscillations in a system, consisted of planar glow discharge layer, coupled to a high-ohmic semiconductor layer. The whole system is sandwiched between two planar electrodes, to which the DC voltage is applied. The discharge models are developed in Comsol Multiphysics (v5.2), and based on ﬂuid description of plasma, with drift-diﬀusion approximation for charged particle ﬂuxes. Numerical tests are carried out for the discharge in Nitrogen, with GaAs semiconductor la...
Characteristic features of an ionization system with semiconducting cathode SALAMOV, BAKHTİYAR; ALTINDAL, ŞEMSETTİN; ÖZER, METİN; Colakoglu, K; Bulur, Enver (EDP Sciences, 1998-06-01) The characteristic features of a de discharge genera.ted between parallel plate electrodes and especially the discharge stabilization by the GaAs semiconducting cathode in such a system are studied. The cathode was irradiated on the back-side with IR light in a particular wavelength range that was used to control the photoconductivity of the material. The semiconductor material was found to stabilize the discharge. The current-voltage and radiation-voltage characteristics of the gas discharge cell with a se...

Citation Formats

C. Cogun, T. C. Deniz, and G. Kucukturk, “GEOMETRICAL APPROACH FOR REDUCTION OF TOOL SHAPE DEGENERATION IN ELECTRIC DISCHARGE MACHINING (EDM),” MACHINING SCIENCE AND TECHNOLOGY, pp. 445–458, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67175.