Abstract
The effects of cutting parameters on the scallops generated in machining are investigated in this paper. An analytical approach is also proposed to correlate the radius of the tool cutter and the radius of the machined workpiece for the milling of three-dimensional spherical surfaces on a conventional three-axis CNC machine tool. Experiments were performed to check the validity of this analytical approach, the experimental results showing that the roundness of the machined surfaces is best when the radius of the tool cutter is half the radius of the machined workpiece for the milling of both three-dimensional internal and external hemispherical surfaces on a conventional three-axis CNC machine tool. Furthermore, optimal cutting conditions and processes are suggested for reducing the scallop size generated in machining.
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