Question: A single-point cutting tool is fitted with an integral obstruction-type chip breaker and is provided with positive, working major cutting-edge inclination so that a chip

A single-point cutting tool is fitted with an integral obstruction-type chip breaker and is provided with positive, working major cutting-edge inclination so that a chip of helical form is produced. The chip-breaker height is 0.5 mm and the chip-breaker distance is 1.5 mm. The undeformed chip thickness is 0.05 mm and the cutting ratio is 0.2. If the chip width is 2 mm, estimate the minimum working major cutting-edge inclination that will ensure that the successive chip coils will not overlap. Assume that the chip-tool contact length is equal to the chip thickness.)

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