Sandvik Intellectual Property Ab

Per Viklund

Ralf Lehto

Stefan Roman

A tool body and a tool for cutting machining, wherein the tool body extends in an axial direction and at least a portion of the tool body is formed with a solid outer jacket encasing a core structure. The core structure includes a three-dimensional open lattice structure attached to the outer jacket and made of a lattice structure material. The core structure further includes a filling structure of a solid phase filling material that is different from the lattice structure material, wherein the filling structure surrounds the lattice structure. The lattice structure and the outer jacket are manufactured using additive manufacturing and the filling material is added to the lattice structure in the form of a liquid or a powder, which is thereafter solidified.

Tool body, a tool and a method for manufacturing a tool body

A tool for chip-removing machining including a tool body and at least one cutting insert mounted in an insert seat of the tool body. The cutting insert includes an upper side and a lower side directed toward a bottom contact surface of the insert seat. The cutting insert is formed by sintering together two compacted powder parts, one of the parts forming an upper part and the other forming a lower part. An imaginary plane is defined between the lower and upper parts. A side surface extends between the upper and lower sides around the periphery of the cutting insert, and at least one cutting edge is formed in a transition between the upper side and the side surface. The tool is configured so that the tool body contacts the side surface of the cutting insert only above the imaginary plane along an upper part of the side surface.

Tool, a cutting insert and a compacted powder part

An indexable cutting insert for a milling tool includes an upper side defining an upper extension plane and a lower side defining a lower extension plane parallel to the upper extension plane. A side surface connects the upper side and the lower side, the side surface including a plurality of upper main clearance surfaces and secondary clearance surfaces. At least six identical and alternately usable upper cutting edges extend around the upper side. Each cutting edge has a chip removing main cutting edge portion and at least one secondary cutting edge portion. The main cutting edge portion is formed in a transition between the upper side and one of the upper main clearance surfaces. The secondary cutting edge portion is formed in a transition between the upper side and one of the secondary clearance surfaces between two main cutting edge portions. The upper main clearance surfaces are formed at an obtuse inner angle &#x3b1; with respect to the upper extension plane as seen in side elevation view.

Metal cutting insert and a milling tool

A face milling tool includes a tool body having a central rotation axis around which the tool is rotatable, and at least one insert seat formed in a transition between a front end and an envelope surface of the tool. The tool further includes at least one cutting insert mounted in the insert seat, the cutting insert having an upper side defining an upper extension plane, a cutting edge extending around the circumference of the upper side, and a lower side defining a lower extension plane directed towards the bottom support surface of the insert seat. A center axis extends perpendicularly through the upper and the lower extension planes. The tool is configured such that a main cutting edge portion is at an entering angle &#x3ba; smaller than 80&#xb0; and such that the upper extension plane is at a radial tipping-in angle &#x2212;60&#xb0;&#x2266;&#x3b3;&#x2266;&#x2212;25&#xb0; and at an axial tipping-in angle &#x2212;20&#xb0;&#x2266;&#x3b3;&#x2266;0&#xb0;, such that an angle of inclination &#x3bb; of the main cutting edge portion is within the range 15&#xb0;&#x2266;&#x3bb;&#x2266;50&#xb0;.

Milling tool

A double-sided, indexable milling insert has a round basic shape defined by an imaginary cylinder, which is concentric with a center axis and extends between two reference planes that extend perpendicular to the center axis and are equidistantly separated from a neutral plane. The milling insert includes a pair of opposite chip faces located in the reference planes between which an envelope surface concentric with the center axis extends, a plurality of identical and alternately usable cutting edges along the peripheries of the chip faces, and lock means for rotationally securing the milling insert in one of several predetermined index positions. The individual cutting edge has the shape of a wave trough and includes two edge segments that meet at a bottom point.

Growing community of inventors

Gavle, Sweden

Per Viklund