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Étude et mise en œuvre d'un moyen flexible pour le rodage de carter cylindre de moteur à combustion interne

Abstract : The honing process with abrasive stones is currently used to mass produce the liners cylinder block with specific functional properties. The quality of shape, the roughness and the textural appearance of honed surface determine the mechanical performance and ecological engines. The honing process is mechanically complex and involves machines completely dedicated and optimized for classical honing operations. After a detailed study of current production machines, their performance and their limitations, the research goal of flexible process for industrial Renault has led to two developments: a model of the abrasion with a process simulation to better understand and design of a prototype machine with high performance to test other methods of honing.The simulation is based on a space-time discretization and an original model of stock cutting. The space discretization is used to represent a macroscopic scale the honing tool and the workpiece and to take into account local contacts between them. Microscopic and mesoscopic properties of the honed surface are studied at this level. Time discretization allows taking into account the kinematics of the machine. The cutting model is based on the interaction of the bearing area ratio curves of the honing tool and the liner. Operation at the macroscopic level predicts the removal of material, the contact force and the local aspect of the honed surface and their changes during the operation. This simulation is validated by numerous experiments.This paper presents the design, the implementation and the development of a prototype machine with electric actuators for high dynamic performance. A digital controller allows the synchronized control of the rotation and stroke to allow trajectories interpolation. The radial expansion can be controlled in position or force. We proposed new original trajectories in the objective of increasing the productivity of the process and to generate new surface textures.
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Submitted on : Wednesday, November 27, 2013 - 5:57:04 PM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM
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  • HAL Id : pastel-00910324, version 1


Benoit Goeldel. Étude et mise en œuvre d'un moyen flexible pour le rodage de carter cylindre de moteur à combustion interne. Autre. Ecole nationale supérieure d'arts et métiers - ENSAM, 2013. Français. ⟨NNT : 2013ENAM0016⟩. ⟨pastel-00910324⟩



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