Title: Machining austempered ductile iron - impact of the cutting edge geometry on tool wear and surface quality

Authors: Jörg Hartig; Benjamin Kirsch; Jan C. Aurich

Addresses: Institute for Manufacturing Technology and Production Systems (FBK), TU Kaiserslautern, Gottlieb-Daimler-Str., 67663 Kaiserslautern, Germany ' Institute for Manufacturing Technology and Production Systems (FBK), TU Kaiserslautern, Gottlieb-Daimler-Str., 67663 Kaiserslautern, Germany ' Institute for Manufacturing Technology and Production Systems (FBK), TU Kaiserslautern, Gottlieb-Daimler-Str., 67663 Kaiserslautern, Germany

Abstract: In general, the performance of cutting tools is determined by its cutting material specification, macrogeometrical shape, cutting edge design and coating. The cutting edge geometry can be considered as one of the most important factors for optimising cutting tools. By using cutting edge preparation, tools can be tailored to the machining task. A homogeneous preparation is either applied to resist high loads in the machining process or to optimise the resulting surface. Inhomogeneous cutting edge preparations can individually be designed to the machining task to match both target criteria simultaneously. In the following article, the cutting edges of tungsten carbide indexable inserts were prepared homogeneously and inhomogeneously. Tool wear and machining results during turning and drilling austempered ductile iron (ADI) 900 were investigated.

Keywords: cutting edge design; tungsten carbide; austempered ductile iron; ADI; turning; drilling; tool wear; surface roughness; machining; machinability; PVD coating; optimisation.

DOI: 10.1504/IJMMM.2021.115309

International Journal of Machining and Machinability of Materials, 2021 Vol.23 No.3, pp.258 - 280

Received: 04 May 2020
Accepted: 15 Oct 2020
Published online: 27 May 2021 *

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