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US 6,722,823 B1Granted
Milling cutter
AssigneeKennametal Inc.
InventorsRuy Frota de Souza, Scott W. Lebo
Life of this patent
Estimating the term…
Abstract
A milling cutter having a plurality of on-edge cutting inserts mounted within pockets about the peripheral wall of the cutter body includes angled pockets which not only permit a greater number of pockets to accept inserts but furthermore permits relatively easy access to insert and remove mounting screws for securing each insert within a pocket.
Claims28
A plunge milling cutter comprising:
- a) a cutter body rotatable about a central axis;
- b) a peripheral wall on the cutter body;
- c) insert pockets located in the peripheral wall, wherein each pocket is spaced from an adjacent pocket by a lug and wherein each pocket has support surfaces including a bottom surface adapted for positioning a rectangular insert within a predefined rectangular envelope within the pocket;
- d) wherein each rectangular envelope has a front and back and four sides therebetween, including a top side, a bottom side and a radially inward side;
- e) wherein each lug has:
- 1) a radial width;
- 2) a front face extending upwardly from the pocket bottom to the top of the lug;
- 3) an axial face extending downwardly from the top of the lug to a height below the top of the lug;
- and
- 4) a rear face extending from the axial face downwardly to the bottom surface of an adjacent pocket,
- f) wherein the support surfaces of the pocket are defined by the lug front face, the bottom surface, the lug rear face of an adjacent lug, and a pocket wall positioned radially inwardly from the peripheral wall and connecting adjacent lugs;
- g) wherein the lug axial face is sloped downwardly across the entire lug width from the top of the lug to the lug rear face, thereby providing a chip clearance groove across the entire width of the lug;
- and
- h) wherein the lug front face extends over the entire back of the insert envelope.
11 more elements
A plunge milling cutter comprising:
- a) a cutter body rotatable about a central axis;
- b) a peripheral wall on the cutter body;
- c) insert pockets located in the peripheral wall, wherein each pocket is spaced from an adjacent pocket by a lug and wherein each pocket has support surfaces including a bottom surface adapted for positioning a rectangular insert within the pocket;
- d) a cutting insert positioned within each pocket and having a rectangular shape with a front and back and four sides therebetween, including a top side, a bottom side and a radially inward side;
- e) wherein each lug has:
- 1) a radial width;
- 2) a front face extending upwardly from the pocket bottom to the top of the lug;
- 3) an axial face extending downwardly from the top of the lug to a height below the top of the lug;
- and
- 4) a rear face extending from the axial face downwardly to the bottom surface of an adjacent pocket,
- f) wherein the support surfaces of the pocket are defined by the lug front face, the bottom surface, the lug rear face of an adjacent lug, and a pocket wall positioned radially inwardly from the peripheral wall and connecting adjacent lugs;
- g) wherein the lug axial face is sloped downwardly across the entire lug width from the top of the lug to the lug rear face, thereby providing a chip clearance groove across the entire width of the lug;
- and
- h) wherein the lug front face extends over the entire back of the insert.
11 more elements
Dependencies are inferred from the claim text.