Measuring procedures of cutting edge preparation when hard turning with coated ceramics tool inserts |
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Affiliation: | 1. Otto–von–Guericke University Magdeburg, Institute of Manufacturing Technology and Quality Management, Universitaetsplatz 2, Magdeburg, Germany;2. Technical University Košice, Faculty of Mechanical Engineering, Košice, Letná 9, Slovakia;3. Schraubenwerk Zerbst GmbH, Altbuchsland 22, Zerbst, Germany;1. VNRVJIET,Bachupally,Hyderabad,India,;2. GITAM University, Visakhapatnam, India;3. VNRVJIET,Bachupally,Hyderabad,India;1. Department of Mechanical Engineering, DCRUST, Murthal 131039, India;2. Department of Mechanical Engineering, NIT, Hamirpur, HP 177005, India;3. Department of Mechanical Engineering, GITAM, Kablana, Jhajjar 124104, India |
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Abstract: | In this paper, the authors introduce the methodology of combined studies on cutting edge preparation and tool performance testing. Five main fields of research on cutting edge preparation are identified in this study of cutting edge preparation while cutting edge microgeometry consists of data associated with tool edge and rake face. Uncoated and TiN coated mixed oxide ceramics inserts have been tested concerning their microgeometry and wear resistance and there is presented a sequence of measuring to identify cutting edge preparation and properties of coating. Authors propose the sequence which considers cutting edge preparation as a factor controlling performance of cutting edge in hard turning operations. Four steps in the sequence of performance testing include measurements with effects of wear criterion and machining time. Measured results show that combined effects of both preparation and coating reduce considerably friction forces in scratch tests and there is very negligible change of microhardness of uncoated and coated ceramics. Relationships between cutting edge microgeometry and acceptable machined surface roughness which results from the sequence in tool performance testing have been identified. Finally, tool performance indices are based on units which characterize machined surface roughness, tool edge wear and forces when hard turning. |
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Keywords: | Mixed oxide ceramics Hard turning Cutting edge preparation Insert coating Measuring sequences Data dimensions Tool performance interpretation |
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