Reamer
AssigneeA.L.M.T. Corp.
InventorsSakuya TANAKA, Koji SAWA
Life of this patent
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Abstract
A reamer incudes a core and a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material. The core extends from a front end to a rear end. The core is provided with a plurality of flutes from the front end to the rear end. A center-of-gravity adjustment portion, which adjusts a distance from a center of rotation to a center of gravity, is provided at least partially from terminal ends of the plurality of flutes on a rear end side to the rear end of the core. The center-of-gravity adjustment portion causes the deviation of the center of gravity from the center of rotation to be smaller than when no center-of-gravity adjustment portion is provided.
Claims6
A reamer comprising:
- a core;
- and
- a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material,
- the core extending from a front end to a rear end,
- the core being provided with a plurality of flutes extending from the front end to the rear end,
- a center-of-gravity adjustment portion being provided at least partially from terminal ends of the plurality of flutes on a rear end side to the rear end of the core, the center-of-gravity adjustment portion adjusting a distance from a center of rotation to a center of gravity,
- the center-of-gravity adjustment portion causing the distance from the center of rotation to the center of gravity to be smaller than when the center-of-gravity adjustment portion is not provided.
Dependencies are inferred from the claim text.