Back to results
US 11,731,203 B2Granted
Insert and cutting tool assembly comprising same
AssigneeTaeguTec, Ltd.
InventorsChang Hee Choi, Chang Won Jeong
Life of this patent
Estimating the term…
Abstract
A cutting insert and a cutting tool assembly for cutting a workpiece. The cutting tool assembly includes a cutting insert having an upper surface that has a quadrilateral shape so as to include first to fourth insert corner portions, and a shim configured to support the insert. The insert includes an upper surface and a lower surface on which first to sixth inclined mounting portions are respectively formed. The shim simultaneously supports the first to third inclined mounting portions, or simultaneously supports the fourth to sixth inclined mounting portions.
Claims10
A cutting tool assembly for cutting a workpiece, comprising:
- a reversible, double-sided insert for use in a cutting tool assembly for cutting a workpiece, insert comprising:
- upper and lower surfaces, each having a quadrilateral shape and identical to one another;
- first and second side surfaces connecting the upper and lower surfaces;
- a thickness direction centerline passing through the upper and lower surfaces, the insert having 180° rotational symmetry about the thickness direction centerline,
- a longitudinal centerline perpendicular to the thickness direction centerline and passing in-between the upper and lower surfaces, the insert having 180° rotational symmetry about the longitudinal centerline,
- first, second, third and fourth insert corner portions formed at respective corners of the upper surface, the first and third insert corner portions being diagonally opposite one another and the second and fourth corner portions being diagonally opposite one another;
- a first cutting portion extending from first insert corner portion towards the second and fourth insert corner portions, the first cutting portion having a first cutting edge extending in a direction of the second insert corner portion and a second cutting edge extending in a direction of the fourth insert corner portion;
- a second cutting portion extending from the third insert corner portion towards the second and fourth insert corner portions, the second cutting portion having a third cutting edge extending in a direction of the second insert corner portion and a fourth edge extending in a direction of the fourth insert corner portion;
- an insert middle portion disposed between the first, second, third and fourth insert corner portions, the insert middle portion having a thickness measured along the thickness direction centerline;
- a first inclined mounting portion formed between the first insert corner portion and the insert middle portion, wherein:
- a vertical thickness of the insert along the first inclined mounting portion decreases from the first insert corner portion in a direction of the thickness direction centerline;
- a second inclined mounting portion formed proximate the second insert corner portion and located closer to the third insert corner portion than to the first insert corner portion, wherein in a second side view of the insert:
- a vertical thicknesses of the insert along the second inclined mounting portion increases in a direction of the thickness direction centerline;
- and
- a third inclined mounting portion formed proximate the fourth insert corner portion and located closer to the third insert corner portion than to the first insert corner portion, wherein in a first side view of the insert:
- a vertical thicknesses of the insert along the third inclined mounting portion increases in a direction of the thickness direction centerline, and
- a shim configured to support the insert, the shim including a shim first inclined support portion configured to support the insert's first inclined mounting portion, a shim second inclined support portion formed to extend from the shim first inclined support portion to one side and configured to support the insert's second inclined mounting portion, and a shim third inclined support portion formed to extend from the shim first inclined support portion to the other side and configured to support the insert's third inclined mounting portion.
14 more elements
A reversible, double-sided insert for use in a cutting tool assembly for cutting a workpiece, the insert comprising:
- upper and lower surfaces, each having a quadrilateral shape and identical to one another;
- first and second side surfaces connecting the upper and lower surfaces;
- a thickness direction centerline passing through the upper and lower surfaces, the insert having 180° rotational symmetry about the thickness direction centerline;
- a longitudinal centerline perpendicular to the thickness direction centerline and passing in-between the upper and lower surfaces, the insert having 180° rotational symmetry about the longitudinal centerline;
- a transverse midplane passing through an intersection of the thickness direction centerline and the longitudinal centerline orthogonal to the longitudinal centerline;
- first, second, third and fourth insert corner portions formed at respective corners of the upper surface, the first and third insert corner portions being diagonally opposite one another and the second and fourth corner portions being diagonally opposite one another;
- a first cutting portion extending from first insert corner portion towards the second and fourth insert corner portions, the first cutting portion having a first cutting edge extending in a direction of the second insert corner portion and a second cutting edge extending in a direction of the fourth insert corner portion;
- a second cutting portion extending from the third insert corner portion towards the second and fourth insert corner portions, the second cutting portion having a third cutting edge extending in a direction of the second insert corner portion and a fourth edge extending in a direction of the fourth insert corner portion;
- an insert middle portion disposed between the first, second, third and fourth insert corner portions, the insert middle portion having a vertical thickness measured along the thickness direction centerline;
- a first inclined mounting portion formed between the first insert corner portion and the insert middle portion, wherein:
- a vertical thickness measured along the thickness direction centerline of the insert along the first inclined mounting portion decreases in a first direction from the first insert corner portion towards the transverse midplane;
- a second inclined mounting portion starting at and extending from the transverse midplane towards the third insert corner portion, the second inclined mounting portion adjacent to or in the second insert corner portion and located closer to the third insert corner portion than to the first insert corner portion, wherein:
- a vertical thickness measured along the thickness direction centerline of the insert along the second inclined mounting portion increases in a second direction from the third insert corner portion towards the transverse midplane;
- and
- a third inclined mounting portion starting at and extending from the transverse midplane towards the third insert corner portion, the third inclined mounting portion adjacent to or in the fourth insert corner portion and located closer to the third insert corner portion than to the first insert corner portion, wherein:
- a vertical thickness measured along the thickness direction centerline of the insert along the third inclined mounting portion increases in the second direction.
13 more elements
Dependencies are inferred from the claim text.