A bevel gear manufacturing face cutter head (2) for face hobbing and face milling. The cutter head has blade positioning slots (20) having a four-sided shaped cross-section and positive blade seating surfaces (22, 24). The cutter head also has the capability to clamp cutting blades (8) tight to the positive blade seating surfaces and to adjust the cutting blades radially after they are pre-clamped and axially located.

A cutter head (4, 6) having a lock spring (30) utilized with an adjustment screw (16) for preventing the adjustment screw from loosening during machining. Once positioned by turning the adjustment screw, a cutting blade (8) will not change position in a mounting slot (10) due to a loosening adjustment screw.

Milling tools configured to increase surface roughness are disclosed. The tool may include an elongated body having a longitudinal axis and a plurality of cutting inserts coupled to the body and spaced along the longitudinal axis, each cutting insert having a cutting edge. In one embodiment, the cutting edges may have an orientation that is oblique to the longitudinal axis of the elongated body. Each cutting edge may have a first end having a greater cutting radius than a second end. The cutting edges may be offset from the longitudinal axis of the elongated body by an offset angle. In another embodiment, the cutting edges may have a textured or rough surface profile. For example, the cutting edges may have a mean roughness (Rz) of at least 7.5 m. The milling tools may increase the surface roughness of a milled engine bore to facilitate a subsequent rough honing process.

A crankshaft milling cutter has a disc-shaped main body rotatable about an axis perpendicular to the disc plane and on the periphery recesses for receiving indexable cutting inserts for removing an allowance on the crankshaft blank. At least some of the recesses are open both in the radial direction and in at least one axial direction of the main body and a first group of said recesses receives cutting inserts designed for removing the allowance on an oil collar adjoining a shaft journal. To provide a crankshaft milling cutter able to meet the increasing requirements with regard to dimensional and positional tolerances placed on a crankshaft milling cutter and at the same time reduces the time needed for fine adjustment of the crankshaft milling cutter, only some of the first group of recesses has devices for setting the axial position of the indexable cutting insert received in each case therein.

A rotary cutting tool includes a tool holder and a tool body releasably attached thereto. The tool body has a cutting portion that includes a peripheral insert pocket, for retaining a cutting insert. The tool holder includes an adjustment arrangement that includes a biasing member, movably attached to the tool holder, having a biasing portion. The cutting portion is adjustable between a non-flexed position and a flexed position. In the flexed position, the cutting portion is elastically deformed in a forward direction due to biasing engagement with the biasing portion, thereby adjusting the axial position of the insert pocket and thus the cutting insert.

Cutting insert with a cuboid body has a substantially square top face and bottom face, said top face and bottom face connected by four peripheral adjoining side surfaces. At least two cutting edges are formed at the transition of the top face to at least two side surfaces, that cutting edges defining a plane of the top face. To provide a cutting insert and a corresponding tool suited to produce valve seat surfaces with high precision but still having a rather simple construction and being precisely mountable with ease and less efforts of adjustment, the plane defined by the top face cutting edges of the cutting insert has maximum dimensions of 7 mm7 mm, where the bottom face has a supporting surface formed exactly parallel to the plane defined by the top face cutting edges by means of grinding within a tolerance of less than 5 angular minutes.