Cutting tool
AssigneeTaeguTec, Ltd.
InventorsChang Hee Choi, Hong Sik Park
Life of this patent
Estimating the term…
Abstract
A cutting tool includes a cutting insert and a tool holder. The tool holder includes: a base for supporting a bottom surface of the cutting insert; a clamping arm for pressing a top surface of the cutting insert; an insert receiving space formed between the bottom surface of the clamping arm and the base; and a supporting surface which defines an end of the insert receiving space and supports an end of the cutting insert. The cutting insert includes: a first pressing region on the front portion of the top surface which is oriented in a vertically upward direction; and a second pressing region on the rear portion of the top surface which is oriented at an angle in the front direction.
Claims13
A cutting tool, comprising:
- a cutting insert comprising a first pressing region on a front portion of a top surface oriented in a vertically upward direction, and a second pressing region on a rear portion of the top surface oriented at an angle in a front direction;
- a tool holder comprising a base for supporting a bottom surface of the cutting insert, a clamping arm for pressing the top surface of the cutting insert, an insert receiving space formed between a bottom surface of the clamping arm and the base, and a supporting surface defining a rear end of the insert receiving space and supporting a rear end of the cutting insert;
- and
- a fixing screw for fixing the cutting insert to the tool holder, the fixing screw having a longitudinal fixing screw axis (C);
- wherein a front portion of the clamping arm mates with the first pressing region, while a rear portion of the clamping arm comprises a projection on the bottom surface formed to be mated with the second pressing region, and
- wherein the front portion of the clamping arm presses the first pressing region in the vertically downward direction (F1) generally parallel to the longitudinal fixing screw axis (C);
- and
- wherein the projection of the clamping arm presses the second pressing region in the angled direction (F2) toward the tool holder at a position closer to the longitudinal fixing screw axis (C) than the first pressing region.
A double-ended cutting insert, comprising:
- an elongated insert body having a top surface, a bottom surface and first and second ends, with a longitudinal insert axis (B) parallel to the bottom surface in a side view of the cutting insert and passing through the first and second ends;
- first and second sets of pressing regions formed on the top surface of the cutting insert;
- each set of pressing regions comprising, from a given end,
- a first pressing region on a front portion of the top surface, the first pressing region configured to provide support oriented in a vertically upward direction, the vertically upward direction being generally perpendicular to the longitudinal insert axis (B), and
- a second pressing region on a rear portion of the top surface, the second pressing region configured to provide support oriented at an angle in a front direction relative to the longitudinal insert axis (B);
- wherein the first and second sets of pressing regions are symmetrically formed on the top surface of the cutting insert, such that the cutting insert is rotationally symmetric about a central axis.
Dependencies are inferred from the claim text.