Milling cutter tool for chip removing machining, as well as a cutting body and a basic body therefor
AssigneeSandvik Intellectual Property AB
InventorSture Sjöö
Life of this patent
Estimating the term…
Abstract
A milling cutter tool including a basic body and a replaceable cutting body. The cutting body includes a set of teeth which are situated with a uniform partition along one of a pair of opposite sides of the cutting body. The cutting body is fixed in a pocket having a support surface against which the underside of the cutting body is mounted. The support surface of the pocket, and the underside of the cutting body, are tipped at a negative axial angle γ of at least 0.5° in relation to a center axis (C1) of the basic body such that the teeth of the cutting body are located along a common, phantom helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch which corresponds to the partition between the teeth.
Claims19
A milling cutter tool comprising:
- a basic body having an envelope surface and two opposite ends, between which a geometrical center axis (C1) extends around which the basic body is rotated in a predetermined direction of rotation;
- and
- a replaceable cutting body, which includes a pair of opposite main surfaces, one of which in a mounted state forms an underside and the other one of which forms an upperside, a pair of opposite sides, and a pair of opposite end surfaces, the cutting body further including a set of teeth which are situated with a uniform partition along one of the pair of opposite sides of the cutting body, each of the teeth including a chip surface formed adjacent to a cutting edge from which the tooth extends between a pair of flanks along a length extension which is orientated at an angle to the underside of the cutting body;
- the cutting body being fixed in a pocket opening in the envelope surface of the basic body and having a support surface facing the forward direction of the direction of rotation of the basic body, against which the underside of the cutting body is mounted,
- wherein the support surface of the pocket, and the underside of the cutting body, are tipped at a negative axial angle (γ) of at least 0.5° in relation to the center axis (C1) of the basic body such that the teeth of the cutting body are located along a common, phantom helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch which corresponds to the partition between the teeth.
A replaceable cutting body for a milling cutter tool, the milling cutter tool including a basic body which includes an envelope surface and two opposite ends between which a geometrical center axis (C1) extends around which the basic body is rotated in a predetermined direction of rotation, at least one pocket opening in the envelope surface and having a support surface facing the forward direction of the direction of rotation of the basic body, against which a cutting body is seated, the support surface of the pocket being tipped at a negative axial angle (γ) of at least 0.5° in relation to the center axis (C1) of the basic body to locate teeth of the cutting body along a common, imaginary helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch, the cutting body comprising:
- a pair of opposite main surfaces, one of which in a mounted state forms an underside and the other one of which forms an upperside, a pair of opposite sides, and a pair of opposite end surfaces;
- and
- a set of teeth which are situated with a uniform partition along one of the pair of opposite sides of the cutting body, each of the teeth including a chip surface formed adjacent to a cutting edge from which the tooth extends between a pair of flanks along a length extension which is orientated at an angle to the underside,
- wherein each of the teeth is cross-sectionally trapezoid by including a back surface towards which the flanks extend at obtuse angles (α).
A basic body for a milling cutter tool, comprising:
- an envelope surface and two opposite ends, between which a geometrical center axis (C1) extends around which the basic body is rotated in a predetermined direction of rotation;
- and
- at least one pocket opening in the envelope surface and having a support surface for seating a cutting body facing the forward direction of the direction of rotation of the basic body,
- wherein the support surface of the pocket is tipped at a negative axial angle (γ) of at least 0.5° in relation to the center axis (C1) of the basic body to locate teeth of the cutting body along a common, imaginary helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch.
Dependencies are inferred from the claim text.