Int J Adv Manuf Technol (2005) 26: 477–490 DOI 10.1007/s00170-004-2180-x
ORIGINAL ARTICLE
S.C. Jayswal · V.K. Jain · P.M. Dixit
Modeling and simulation of magnetic abrasive finishing process
Received: 27 November 2003 / Accepted: 13 March 2004 / Published online: 2 February 2005 © Springer-Verlag London Limited 2005 Abstract Magnetic abrasive finishing (MAF) is one of the advanced finishing processes, which produces a high level of surface quality and is primarily controlled by a magnetic field. In MAF, the workpiece is kept between the two poles of a magnet. The working gap between the workpiece and the magnet is filled with magnetic abrasive particles. A magnetic abrasive flexible brush (MAFB) is formed, acting as a multipoint cutting tool, due to the effect of the magnetic field in the working gap. This paper deals with the theoretical investigations of the MAF process. A finite element model of the process is developed to evaluate the distribution of magnetic forces on the workpiece surface. The MAF process removes a very small amount of material by indentation and rotation of magnetic abrasive particles in the circular tracks. A theoretical model for material removal and surface roughness is also proposed accounting for microcutting by considering a uniform surface profile without statistical distribution. Numerical experiments are carried out by providing different routes of intermittent motion to the tool. The simulation results are verified by comparing them with the experimental results available in the literature. Keywords FEM · Magnetic abrasive finishing (MAF) · Modeling · Nanometer (nm) finish · Non-conventional finishing · Simulation
1 Introduction Traditional fine finishing operations such as grinding, lapping, or honing employ a rigid tool that subjects the workpiece to substantial normal stresses which may cause microcracks resulting in reduced strength and reliability of the machined part. A relaS.C. Jayswal∗ · V.K. Jain (u) · P.M. Dixit Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India E-mail:
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