FIELD: construction.
SUBSTANCE: cutting insert has a chip discharge means and includes the opposed upper and lower butts, and the first and the second side surfaces, which extend therebetween and converge in a cutting corner having a bisector. The chip discharge means includes an elongated surface extending upwardly from the upper butt surface and extending longitudinally the opposite sides of the bisector. The elongate surface comprises the first and the second ends. The first end is closer to the first side surface than to the bisector, and the second end is closer to the second side surface than to the bisector.
EFFECT: improving the chip crushing.
20 cl, 7 dwg
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RU2695792C1 |
