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A new in-situ rotary magnetorheological honing (RMRH) approach has been developed in this study to fine-finish the machined inner surface of cylindric workpieces with increased productivity and dimensional accuracy. A single in-situ honing tool is used for performing both traditional as well as magnetorheological (MR) honing. The tool is fabricated based on the designed tool through magnetostatic analysis. In this work, the final MR finished surface is achieved up to 60 nm from the original machined surface roughness of 510 nm with the expense of 40 min of traditional honing and 60 min of MR finishing. Also, the great improvement in surface waviness is confirmed through the final surface waviness is achieved as 50 nm from the initial surface waviness of 1460 nm. The improvement in circularity is confirmed through the circularity test performed in this work. The improvement in surface texture has been analyzed through the scanning electron microscope images. As a result of the finishing capability of the currently designed in-situ tool, it is useful in a variety of industrial applications such as oil pipes, bearings, hydraulic cylinders, cylindrical molds, cylindrical barrels of injection molding machines, compressor bodies, valve bodies, etc.

Development of a new in-situ rotating magnetorheological honing technique for fine finishing the inner cylindric surfaces