TAILIEUCHUNG - Thermo-physical modeling of die-sinking EDM process

(BQ) This paper reports the development of a thermo-physical model for die-sinking electric discharge machining (EDM) process using finite element method (FEM). Numerical analysis of the single spark operation of EDM process has been carried out considering the two-dimensional axi-symmetric process continuum | Journal of Manufacturing Processes 12 (2010) 45–56 Contents lists available at ScienceDirect Journal of Manufacturing Processes journal homepage: Technical paper Thermo-physical modeling of die-sinking EDM process . Joshi, . Pande ∗ Computer Aided Manufacturing Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Bombay, Mumbai – 400076, India article info Article history: Received 4 November 2009 Received in revised form 27 January 2010 Accepted 13 February 2010 Available online 16 March 2010 abstract This paper reports the development of a thermo-physical model for die-sinking electric discharge machining (EDM) process using finite element method (FEM). Numerical analysis of the single spark operation of EDM process has been carried out considering the two-dimensional axi-symmetric process continuum. The analysis is based on more realistic assumptions such as Gaussian distribution of heat flux, spark radius equation based on discharge current and discharge duration, latent heat of melting, etc., to predict the shape of crater cavity and the material removal rate (MRR). Using the developed model, parametric studies were carried out to study the effect of EDM process parameters such as discharge current, discharge duration, discharge voltage and duty cycle on the process performance. Experimental studies were carried out to study the MRR and crater shapes produced during actual machining. When compared with the reported analytical models, our model was found to predict results closer to the experimental results. The thermo-physical model developed can further be used to carry out exhaustive studies on the EDM process to obtain optimal process conditions. © 2010 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved. 1. Introduction Electric discharge machining (EDM) is a widely used nontraditional machining process in the manufacture of complex shaped dies, .

• Cơ khí - Chế tạo máy
• Thermo physical modeling
• Die sinking EDM process
• Electrical Discharge Machining
• The EDM process
• Parametric studies on EDM process