Boring tool and method for manufacturing machined product
AssigneeKYOCERA Corporation
InventorsShosei GOTO, Kyosuke TSUCHIGAMI
Life of this patent
Estimating the term…
Abstract
A boring tool may include a shaft member and a first cutter, a third cutter, and a second cutter fixed to the shaft member. A distance between the first cutter and the third cutter may be greater than a distance between the second cutter and the third cutter. The second cutter may have a second front end surface, a second cutting edge located on an outer peripheral side, and a second pocket. The third cutter may have a third front end surface, a third cutting edge located on the outer peripheral side, and a third pocket. The second pocket may be connected to the second front end surface at a right angle, and the third pocket may be connected to the third front end surface at an obtuse angle.
Claims8
A boring tool comprising:
- a shaft member extending along a rotation axis from a front end toward a rear end;
- a first cutter located on a side at which the front end is provided, and fixed to the shaft member;
- a second cutter located on a side at which the rear end is provided, and fixed to the shaft member;
- and
- a third cutter located between the first cutter and the second cutter, and fixed to the shaft member,
- wherein a distance between the first cutter and the third cutter is greater than a distance between the second cutter and the third cutter,
- the second cutter comprises:
- a second front end surface that is flat and located on the side at which the front end is provided;
- a second cutting edge located on an outer peripheral side;
- and
- a second pocket
- located forward of the second cutting edge in a rotation direction of the rotation axis, and
- connected to the second front end surface,
- the third cutter comprises:
- a third front end surface that is flat and located on the side at which the front end is provided;
- a third cutting edge located on the outer peripheral side;
- and
- a third pocket
- located forward of the third cutting edge in the rotation direction, and
- connected to the third front end surface, and
- the second pocket is connected to the second front end surface at a right angle, and the third pocket is connected to the third front end surface at an obtuse angle.
Dependencies are inferred from the claim text.