Abstract
The shape change law of a multimaterial electrode in EDM was studied, and a cosimulation between ANSYS and MATLAB of electrode shape change of the multimaterial electrode and workpiece was established. Element birth and death in ANSYS was used to obtain the removal volume in a single-pulse discharge, and the electrode feed strategy, material removal, and renewal strategy are considered to establish the shape simulation strategy. Then, a program based on MATLAB software was compiled to simulate the machining process and predict the shape change of the multimaterial electrode of different combinations. The experiments of different multimaterial electrodes were carried out with the die steel as the workpiece. The simulation results were compared with the experimental results to verify the effectiveness of the simulation model.
Highlights
In aviation and aerospace, electronic communication, biomedical engineering, mold manufacturing, and many other technical fields, micro/meso complex surface parts are more and more widely used
In order to master the rule of shape change, better control the shape change in the process of machining, and meet the requirements of machining accuracy, it is necessary to obtain the rule of machining accuracy and shape change through simulation. erefore, the electrode wear and shape change law of multimaterial electrodes in Electrical discharge machining (EDM) are explored, which can provide theoretical support and technical reference for multimaterial electrodes forming machining of small complex surfaces in EDM [1,2,3]
Aimed at the electrode wear when machining the blind hole in EDM, on the basis of two-dimensional matrices, the shape change process of the electrode was simulated by setting the influence factors of electrode movement, discharge gap, removal amount of single-pulse material, and relative loss rate [10]
Summary
Electronic communication, biomedical engineering, mold manufacturing, and many other technical fields, micro/meso complex surface parts are more and more widely used. By using the electrode wear and shape change of different material electrodes in EDM to achieve the machining shape requirements of different complex surface features and by combining various electrode materials into multimaterial forming electrodes, it can process micro/meso cavity with complex surfaces It has high production efficiency and good surface quality. Aimed at the electrode wear when machining the blind hole in EDM, on the basis of two-dimensional matrices, the shape change process of the electrode was simulated by setting the influence factors of electrode movement, discharge gap, removal amount of single-pulse material, and relative loss rate [10]. To predict the shape changes of various multimaterial electrodes under continuous discharge conditions, the influence parameters are as follows: single-pulse removal volume of different materials, relative wear ratio of electrode workpiece, electron escape work, etc. To predict the shape changes of various multimaterial electrodes under continuous discharge conditions, the influence parameters are as follows: single-pulse removal volume of different materials, relative wear ratio of electrode workpiece, electron escape work, etc. e machining experiment of the multimaterial electrode with different combinations is carried out to verify the validity of the simulation model
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