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Title of Journal: J Braz. Soc. Mech. Sci. Eng.

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Abbravation: Journal of the Brazilian Society of Mechanical Sciences and Engineering

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Springer Berlin Heidelberg

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Experimental investigation of hole quality during reaming applications using multi-blade tools

Authors: K. Schützer, M. Roth, E. Abele, T. Hauer,

Publish Date: 2014/01/21
Volume: 36, Issue:4, Pages: 797-806
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In practice, economical reaming of precision holes requires the use of multi-blade reaming tools. The main objective of precision machining processes is to minimize any deviations arising from dimensional and shape tolerances. However, process errors such as misalignment errors between the axes of the tool and the pre-drilled hole can occur during reaming processes, thus affecting the machining outcome. This experimental study aims to investigate the influence of process errors and tool geometry on the resulting hole quality while reaming valve guides made of sintered steel alloys. There is particular emphasis on the guiding function of reaming tools with regard to varying chamfer dimensions and back taper ratios at the secondary cutting edge. The experimental results indicate that an enlarged contact zone between the secondary cutting edge and the workpiece material will lead to improved straightness tolerances.



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