Rotary tool and method for manufacturing machined product
AssigneeKYOCERA Corporation
InventorMasahiko Kuroda
Life of this patent
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Abstract
A rotary tool may include a body extending from a front end toward a rear end. The body may include a tip cutting edge, a corner cutting edge, an outer peripheral cutting edge, a first rake surface, a second rake surface, and a third rake surface. The corner cutting edge may extend from the tip cutting edge toward an outer periphery. The outer peripheral cutting edge may extend from the corner cutting edge toward the rear end. The first rake surface may be located along the tip cutting edge. The second rake surface may be located along the corner cutting edge. The first rake surface may have a straight line shape in a cross section orthogonal to the tip cutting edge, and the second rake surface may have a concave shape in a cross section orthogonal to the corner cutting edge.
Claims11
A rotary tool, comprising:
- a body having a columnar shape extending from a front end of the body toward a rear end of the body along a rotation axis, wherein
- the body comprises:
- a tip cutting edge having a straight line shape located on a side of the front end,
- a corner cutting edge having a convex curvilinear shape extending from the tip cutting edge toward an outer periphery of the body,
- an outer peripheral cutting edge extending from the corner cutting edge toward the rear end,
- a first rake surface located along the tip cutting edge,
- a second rake surface located along the corner cutting edge,
- a third rake surface located along the outer peripheral cutting edge,
- a gash surface that is flat and that extends from the first rake surface toward the rear end, and
- a flute extending from each of the gash surface, the second rake surface, and the third rake surface toward the rear end,
- wherein the first rake surface has a straight line shape in a cross section orthogonal to the tip cutting edge, and
- the second rake surface has a concave shape in a cross section orthogonal to the corner cutting edge.
Dependencies are inferred from the claim text.