FIELD: process engineering.
SUBSTANCE: cutting plate comprises at least one cutting edge, face surface extending from cutting edge and having positive front clearance angle, concave part located adjacent to or behind rake face is seen from the cutting edge, and at least one ledge extending from concave section of lower surface. Note here that said ledge is located closer to concave section lower surface composed by continuation of face surface towards concave section. At least section of the ledge top surface is spaced from face surface continuation as it moves from cutting edge, while the section of ledge from end part in outer direction of the plate to its mid part in transverse cross-section crossing the cutting edge is formed by concave curvilinear surface approaching the face surface continuation as it parts from cutting edge.
EFFECT: decreased deformation of chips.
6 cl, 5 dwg
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| INSERT AND CUTTING TOOL | 2010 |
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RU2501632C2 |
