Iterative surface warping to shape craters in micro‐EDM simulation
Article dans une revue avec comité de lecture
This paper introduces a new method for simulat- ing the micro-EDM process in order to predict both the tool’s wear and the workpiece’s roughness. The tool and workpiece are de ned by NURBS patches whose shapes result from an iterative crater-by-crater deformation technique driven by physical parameters. Through hundreds of thousands of local surface warping, the method is able to compute the global as well as the local shapes of the tool and workpiece. At each step, the warping vector and function are computed so as to be able to generate a spherical crater whose volume is also controlled. While acting very locally to simulate the real physical phenomenon, not only the method can evaluate the tool’s wear from the overall nal shape at a low resolu- tion level, but it can also estimate the workpiece’s roughness from the high resolution level. The simulation method is validated through a comparison with experimental data. Dif- ferent simulations are presented with an increase in compu- tation accuracy in order to study its in uence on the results and their deviation from expected values.
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Communication avec acteBIGOT, Samuel; PERNOT, Jean-Philippe; SURLERAUX, Anthony; ELKASEER, Ahmed (2013)This paper introduces a new method for simulating the micro-EDM process in order to predict tool wear. The tool and workpiece are defined by NURBS surfaces whose shapes result from an iterative crater-by-crater deformation ...
Communication avec acteBIGOT, Samuel; PERNOT, Jean-Philippe; D'URSO, Gianluca; MERLA, Cristina; PEYROUTET, Jérémy; SURLERAUX, Anthony (2014)This paper presents a new approach for the recording of the total quantity of energy exchanged during the micro Electro Discharge Machining (EDM) process. In particular, this approach allows for the estimation of the ...
Article dans une revue avec comité de lectureSURLERAUX, Anthony; LEPERT, Romain; PERNOT, Jean-Philippe; BIGOT, Samuel (Future Technology Press, 2015)This paper describes a new efficient method for computer aided optimisations of micro EDM die sinking tools, which can be used for design optimisation and performance verification in the digital domain. This would facilitate ...
A comparative study between NURBS surfaces and voxels to simulate the wear phenomenon in micro-EDM Article dans une revue avec comité de lectureSURLERAUX, Anthony; PERNOT, Jean-Philippe; BIGOT, Samuel (CAD Solutions LLC (imprimé) and Taylor & Francis Online (en ligne), 2016)The prediction of the tool wear phenomenon in the micro electro discharge machining technology would be of a great use in the optimization of tool shapes. In order to do so, the ability to rapidly and precisely simulate ...
Communication avec acteSURLERAUX, Anthony; BIGOT, Samuel; PERNOT, Jean-Philippe; D'URSO, Gianluca; MERLA, Cristina (2015)The present paper introduces the use of voxels embedded in an octree structure in order to numerically simulate manufacturing processes. In particular, micro electrical discharge machining (μEDM) is used here as a case ...