Milling insert
AssigneeSandvik Intellectual Property AB
InventorsGustaf Wandebäck, Jörgen Jansson
Life of this patent
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Abstract
A milling insert having an upper side, an under side, a clearance face disposed between the upper and under side, and at least one cutting edge that includes two main edges, which converge toward a nose edge. The cutting edge is formed between two ground part surfaces situated on both sides of a cutting edge line, by on one hand, a primary clearance surface, which is included in the clearance face and is off-plane from a lower, secondary clearance surface, and, on the other hand, a peripheral chip surface, which is included in the upper side and situated on a higher level than a land disposed inside, and which is narrower than the primary clearance surface and has a width of at least 0.3 mm. The milling insert may advantageously be used in milling tools for gear hobbing.
Claims9
A milling insert, comprising:
- an upper side;
- an under side;
- a clearance face extending between the upper and under side;
- and
- a cutting edge, which runs along a cutting edge line and is formed in a transition between the upper side and the clearance face, the cutting edge including two main edges that converge toward and meet in a nose edge, the milling insert having a positive cutting geometry formed by a clearance angle between the clearance face and a normal to the upper side, the clearance angle being acute, and wherein the cutting edge is formed between two ground part surfaces situated on both sides of the cutting edge line one of the ground part surfaces being a primary clearance surface included in the clearance face, the primary clearance surface being off-plane and projecting from a secondary clearance surface, and the other ground part surface being a peripheral chip surface included in the upper side and situated on a higher level than a land located inside the peripheral chip surface, the peripheral chip surface being narrower than the primary clearance surface and having a width of at least 0.3 mm.
Dependencies are inferred from the claim text.