A study on the fabrication of curved surfaces using magnetorheological fluid finishing

Seok, Jongwon; Kim, Yong Jae; Jang, Kyung In; Min, Byung Kwon; Lee, Sang Jo

doi:10.1016/j.ijmachtools.2007.05.007

Cited by 75 publications

(31 citation statements)

References 19 publications

(22 reference statements)

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“…Due to the attractive properties of MRF such as continuous adjustability, actively controllable nature, low energy consumption etc., it has a wide range of applications in machinery manufacturing, auto parts, precision machining, aerospace, biomedical and other applications [4][5][6][7][8]. At present, MRFs have been commercialized both domestically and in foreign, and successfully applied to the devices, but the MRF still has multiple issues that limit its application areas.…”

Section: Introductionmentioning

confidence: 99%

Effect of different hardness nanoparticles on friction properties of magnetorheological fluids

Zhao¹,

Zhang²,

Yao³

2017

AIP Conference Proceedings

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Section: Introductionmentioning

confidence: 99%

Effect of different hardness nanoparticles on friction properties of magnetorheological fluids

Zhao¹,

Zhang²,

Yao³

2017

AIP Conference Proceedings

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“…This MRFF process can achieve the nanofinishing of complex freeform surfaces, and more axes-controlled machines as well as further miniaturized finishing tool are required for finishing complex components with small curvature radius concave surfaces. Seok et al [12] proposed a MRF process for finishing of siliconbased micro-structures using vertical rotational permanentmagnet wheel. Song et al [13] developed a five-axis linkage MRF machine which can process parts up to 1 m in diameter using a polishing wheel of 300 mm in diameter.…”

Section: Introductionmentioning

confidence: 99%

Design and fabrication of a novel magnetorheological finishing process for small concave surfaces using small ball-end permanent-magnet polishing head

Chen

Liu

et al. 2015

Int J Adv Manuf Technol

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In order to overcome the defects of conventional magnetorheological finishing (MRF) processes that are unable to finish small curvature radius concave surfaces of diameter within 10 mm, a novel precision MRF process using small ball-end permanent-magnet polishing head with a diameter of 4 mm is proposed in this paper. And experimental setup of a four-axis linkage MRF machine tool is fabricated. Magnetostatic simulation of the distribution of magnetic flux density indicates that the magnetic field uniformity of produced polishing head is 93.3 %. Magnetizing force analysis is done to analyze the formation of magnetorheological fluid in finishing region. In addition, the suitable range of C-axis angular position for finishing is generated to be 60°~70°. Finishing experiments on both nonmetallic and metallic specimens with different surface shapes have been conducted. The ability of the developed method of finishing process to improve surface characteristics of a workpiece is demonstrated to reach the surface roughness of finished surfaces below Ra 6 nm. It confirms that the present MRF process is capable of improving surface quality and performing the nanofinishing on small curvature radius concave surfaces.

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“…The process has been used to obtain the curved surfaces of silicon-based micro-structure and finishing three dimensional components. Finite element method (FEM) was employed to investigate the magnetic field effect near the tool assembly on the finishing surface profile [3,4]. Optical aspheric components were polished with MR fluid assistive finishing process.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation into tool aging effect in ball end magnetorheological finishing

Niranjan

Jha

2015

Int J Adv Manuf Technol

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Magnetorheological (MR) finishing is a smart finishing processes applied to a variety of applications. In the present work, an attempt has been made to improve the percentage reduction in surface roughness with sintered magnetic abrasives based MRP fluid on BEMRF tool. Sintered magnetic abrasives were developed by mixing of 20 vol% carbonyl iron powder (CIP) CS grade and 25 vol% SiC in ball mill then pellets of 5 g each have been made at 8 ton pressure. These pellets were allowed to sinter in tubular furnace at 1200°C in the controlled atmosphere of argon. The sintered pellets were crushed in a ball mill to obtain sintered magnetic abrasives. The morphology and magnetizability of sintered magnetic abrasives have been studied with scanning electron microscope (SEM) and vibration sample magnetometer (VSM). MRP fluid was synthesized with 45 vol% sintered magnetic abrasives and 55 vol% base fluid. Experiments were conducted on mild steel work-piece for 30 min using BEMRF tool at given machining conditions. Percentage reduction in surface roughness (%ΔR a ) was calculated and compared with %ΔR a obtained by finishing mild steel work-piece with unbonded magnetic abrasives based MRP fluid and found better results. The effect of rotation per minute (RPM) on %ΔR a has been studied and found optimum by conducting the experiments at higher values of RPM keeping other machining conditions same. The experimental study shows that the sintered magnetic abrasives based MRP fluid in MR finishing may be used at higher rotational speeds without tool aging effect and impart a higher finishing force on the workpiece surface, improves finishing capability of the process.

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A study on the fabrication of curved surfaces using magnetorheological fluid finishing

Cited by 75 publications

References 19 publications

Effect of different hardness nanoparticles on friction properties of magnetorheological fluids

Effect of different hardness nanoparticles on friction properties of magnetorheological fluids

Design and fabrication of a novel magnetorheological finishing process for small concave surfaces using small ball-end permanent-magnet polishing head

Experimental investigation into tool aging effect in ball end magnetorheological finishing

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