A milling tool for an angle grinder has a supporting body, in the shape of a disk and able to be rotationally driven in a direction of rotation, which has an upper side and an underside. The supporting body is formed as a composite body of fibre-reinforced plastic. Cutting element chambers are formed in the supporting body, open to underside, in each of which one cutting element is replaceably arranged.

A method for manufacturing a sidewall support surface of an insert-receiving pocket with a compound radius includes the steps of: 1) tilting a cutting tool at a primary tilt angle with respect to a first plane (x-z); 2) tilting the cutting tool at a secondary tilt angle with respect to a second plane (y-z), the second plane different than the first plane; and 3) rotating the cutting tool about an axis (z-axis) perpendicular to a pocket floor of the insert-receiving pocket while maintaining the first and second tilt angles. A cutting tool including a toolholder with the insert-receiving pocket having a pocket floor and the sidewall support surface formed with a compound radius is also described.

A milling tool is disclosed. The milling tool may include an elongated body having a longitudinal axis and a plurality of cutting inserts. The cutting inserts may each have a cutting edge and a cutting radius and be coupled to the body and spaced along the longitudinal axis. One or more of the plurality of cutting inserts may be adjustable (e.g., mechanically adjustable) between first and second cutting radii. A difference between the first and second cutting radii may be at least 10 m. The milling tool may include cutting inserts having a plurality of different cutting radii. The milling tool may be configured to have a length that spans an entire height of an engine bore. The cutting inserts having different radii may compensate for dimensional errors in an engine bore diameter that occur when milling a deep pocket.

A method of milling an engine bore is disclosed. The method may include inserting a milling tool having a plurality of cutting edges along a longitudinal axis into an engine bore, rotating the milling tool about the longitudinal axis and moving the milling tool around a perimeter of the engine bore to remove material from the engine bore, and rough honing the bore. The milling may generate a tapered bore (e.g., frustoconical). The rough honing process may increase a minimum diameter of the tapered bore by at least 60 m. A total time of the milling and honing process may be less than 60 seconds. In one embodiment, the honing step may include using a grit size of at least 200 m and/or using a honing force of at least 200 kgf. The method may reduce the cycle time and tooling requirements of forming engine bores.

The invention relates to a milling tool for gear milling. The tool body is equipped with tangentially mounted milling inserts having four cutting edges and two holes, only one of which is utilized for a fixing screw in two of totally four index positions. By locating a screw hole in the seat of the milling insert at a distance from the radial support surface of the seat that is greater than the distance between an individual hole and a distal end of the milling insert, a clamping force is provided by means of the inherent elasticity of the fixing screw. In such a way, the milling insert is pressed against the radial support surface. By means of a transversal eccentricity, the milling insert is also pressed against a tangential support surface in the seat. By means of this construction, the two holes in differently long milling inserts can be formed with equally large distances from distal ends. Thereby, one and the same tool body can be equipped with differently long milling inserts.

An indexable milling cutting insert includes an opposed outside and inside, a periphery, and a plurality of homologous and alternately individually usable cutting edges, which are equidistantly spaced apart from a centre axis, which extends between the outside and inside. The cutting insert includes a plurality of countersunk chip channels, which are delimited by bottoms and tangentially spaced-apart ridges, which individually include a cutting edge formed between a chip surface included in a first chip channel, and a clearance surface, which borders on a second chip channel.

A milling tool has a basic body rotatable about a centre axis, and including an outside, which includes a pair of opposite front and back sides, as well as a peripheral envelope surface. The body is equipped with a plurality of replaceable cutting inserts. The basic body includes an inner hollow space having an internal limiting surface, in which there collectively mouth a plurality of bores. The bores also mouth in the outside. Each cutting insert is mounted on an outer end of an ejector, which is rectilinearly movable in the individual bore and has an inner end accessible from the hollow space, and which interacts with a compressible force generator, to pull the same into the bore. By mounting the cutting inserts on ejectors, which simultaneously are accessible from a common hollow space, the cutting inserts can be replaced fast and easily, and possibly also be indexed.

A milling tool includes a main body and a plurality of cutting inserts with respective cutting edges. The main body has an end face and a barrel-shaped curved lateral face. A first group of the plurality of cutting inserts are fastened on the end face, a second group of the plurality of cutting inserts are fastened on the barrel-shaped curved lateral face, and the respective cutting edges describe a barrel shape. Each one of the plurality of cutting inserts may be designed as an indexable insert.

A cutting insert includes at least two peripheral cutting edges. An insert holder assembly includes an insert holder which include an insert pocket and an ejector chamber connected by a through hole. The insert holder assembly includes an ejector member located at least partially in the ejection chamber, and a compressible biasing member. In an inner position, the biasing member exerts a compressive force on the ejector member. When the cutting insert is releasably attached to the insert holder by a fastening member which is connected to the ejector member, to constitute a fastened position of a cutting tool, the insert holder assembly is in the inner position and the fastening member clamps the cutting insert so that the insert lower surface abuts the pocket base surface.