Abstract
The effects of the tool clearance angle on tool wear pattern intensity and tool life were investigated. Dry orthogonal cutting tests using high speed steel tools of different clearance angles were performed under conditions of constant cutting speed and in-feed rate for stepped mild steel shafts. A tool clearance angle of 6° was found to be an optimum compromise between tool flank wear and workpiece surface finish for the general orthogonal cutting of mild steel. The experimental results revealed the existence of linear logarithmic relationship between tool life and clearance angle up to 8°. Above 8° the tool life decreases as the clearance angle increases.
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