A composite tool for ball endmilling

Philip Koshy, David Aspinwall, Richard Dewes

Research output: Contribution to journalArticle

3 Citations (Scopus)


The paper reports on the performance of a novel composite ball nose endmill that utilizes cermet and tungsten carbide indexable inserts on the same cutter body, with a view to optimizing both tool life and workpiece surface roughness. The technique exploits the asymmetric design of the cutter to position the cermet and tungsten carbide inserts appropriately, so that their characteristic tribological attributes are consistent with the functions of surface generation and wear resistance. Experimental work on ball endmilling of hardened AISI H13 tool steel is presented to illustrate the concept. The mechanism of performance enhancement of the composite tool is also detailed with reference to the flank wear pattern of the inserts and the morphology of the machined surface.
Original languageEnglish
Pages (from-to)1157-1163
Number of pages7
JournalProceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture
Issue number8
Publication statusPublished - 1 Jan 2001


  • hand milling
  • ball endmilling
  • composite tool
  • material side flow


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