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US 2010/0135735 A1Published application
Cutting Tool and Clamping Mechanism Therefor
AssigneeIscar, Ltd.
InventorsAmir SATRAN, Evgeny TULCHINSKY, Alexander KOIFMAN
Life of this patent
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Abstract
A clamping mechanism clamps a cutting insert in a tool body. The clamping mechanism has a clamping arm seated within a clamping arm pocket. The clamping arm includes a clamping protrusion extending rearwardly from a rear surface of the clamping arm. The cutting insert has a bore having an insert retaining surface and is seated within an insert pocket. Upon tightening the clamping arm into the tool body, the clamping protrusion presses against the insert retaining surface and the cutting insert is securely abutted within the insert pocket.
Claims20
A clamping mechanism (12) for clamping a cutting insert (24) in a tool body (14), the clamping mechanism (12) comprising:
- a clamping arm (26) seated within a clamping arm pocket (22), the clamping arm (26) comprising a clamping protrusion (54) extending rearwardly from a rear surface (50) of the clamping arm;
- the cutting insert (24) comprising a bore (112) having an insert retaining surface (124) and being seated within an insert pocket (20);
- wherein:
- the clamping protrusion (54) is configured to press against the insert retaining surface (124) to securely retain the cutting insert (24) within the insert pocket (20), upon tightening the clamping arm (26) into the tool body (14).
1 more element
A cutting tool comprising:
- a tool body (14) having formed therein at least one tool pocket (16) which comprises an insert pocket (20) merged with an associated clamping arm pocket (22), the clamping arm pocket having a pocket threaded bore (102);
- a clamping arm (26) seated in the clamping arm pocket (22), the clamping arm comprising a clamp upper surface (30), a clamp lower surface (32), a clamp front surface (42), a clamp rear surface (50), a clamping protrusion (54) extending rearwardly from the clamp rear surface (50) and a threaded through bore (66) extending between the clamp upper surface and the clamp lower surface;
- and
- a clamping screw (28) retaining the clamping arm in the clamping arm pocket, the clamping screw comprising a screw upper threaded portion (72) threadingly engaged to the threaded through bore (66) and a screw lower threaded portion (74) threadingly engaged to the pocket threaded bore (102), the screw upper threaded portion and the screw lower threaded portion are threaded in opposite directions;
- wherein:
- the clamping arm is configured to move in a combined rotational (142) and translational (144) movement, upon rotation of the clamping screw in a first direction.
3 more elements
A cutting tool assembly comprising:
- a tool body (14) having formed therein at least one tool pocket (16) which comprises an insert pocket (20) merged with an associated clamping arm pocket (22), the clamping arm pocket having a pocket threaded bore (102);
- a clamping arm (26) comprising a clamp upper surface (30), a clamp lower surface (32), a clamp front surface (42), a clamp rear surface (50), a clamping protrusion (54) extending rearwardly from the clamp rear surface (50) and a threaded through bore (66) extending between the clamp upper surface and the clamp lower surface;
- a clamping screw (28) comprising a screw upper threaded portion (72) threadingly engageable to the threaded through bore (66) and a screw lower threaded portion (74) threadingly engageable to the pocket threaded bore (102), the screw upper threaded portion and the screw lower threaded portion are threaded in opposite directions;
- and
- a cutting insert (24) comprising a bore (112) having an insert retaining surface (124);
- wherein:
- the cutting tool assembly is adjustable between:
- an unassembled state in which the tool body, clamping arm, clamping screw and cutting insert are separated from one another;
- and
- an assembled state in which:
- the clamping arm is retained in the clamping arm pocket by the clamping screw;
- and
- the cutting insert is located in the insert pocket with the clamping protrusion of the clamping arm pressing against the cutting insert's insert retaining surface;
- and
- the clamping arm is configured to move in a combined rotational (142) and translational (144) movement, upon rotation of the clamping screw in a first direction.
12 more elements
Dependencies are inferred from the claim text.