A face milling cutter head for producing trapezoidal grooves, e.g. for toothing in bevel gears having arcuate tooth flank lines, the head having a main axis and comprising a substantially disk-shaped carrier body portion with a locking ring surrounding the same; the body portion having therein at least two grooves for a corresponding number of removably inserted, substantially axially extending, rod-shaped milling cutters having respective longitudinal shaft axes, the grooves being substantially equidistant from the main axis; the cutters having chip bearing surfaces that are tilted with respect to the shaft axes, head and respective flank clearance surfaces, head and corresponding flank cutting edges, and at least three shaft surfaces; wherein cutting lines are formed on the cutters between the head and flank clearance surfaces, the cutting lines forming reference planes with the shaft axis; and wherein the spatial arrangement of the cutters, surfaces and edges is such that the reference planes run substantially parallel with at least one of the shaft surfaces and with the main head axis; the planes being constituted, on the one hand, between the cutting lines and, on the other hand, by a second line that is parallel with the main head axis and passes through the cutting lines. Additional, optional features are also disclosed.

A gear cutting tool is provided with angular planar surfaces along its front face for providing first and second side rake angles on the tool. The angular planar surfaces do not rquire resharpening when the tool is resharpened.

A face milling type gear cutting assembly including contiguous cutting tools positioned in a common slot with means for preserving clearance for chip removal between these tools. The cutting assembly also includes a tool clamping arrangement featuring a novel clamping block which is releasably attached to a screw element in situ.

Cutting blade and system that allows all the freedoms of the three-side-ground cutting blade while using a two-side-ground cutting blade. A new cutting edge can be defined on the two-side-ground cutting blade that will duplicate the tooth surface cut by the three-side-ground cutting blade with different hook and side rake angles. The new cutting edge of the two-side-ground cutting blade is determined by a plurality of points, each point corresponding to a point on the three-side-ground cutting blade, such that when cutting, each point along the cutting edge of a two-side ground cutting blade will lie on the same epicycloid generated by the corresponding points on a three-side-ground cutting blade with different hook and side rake angles.

To provide better possibilities for shaping or forming the tooth bearing pattern or localized tooth contact the cutting edges, i.e. the outer and the inner cutting edges, of the cutters are inserted into the face cutter head such that an end of the cutting edge which faces the base of the tooth leads the other end of the same cutting edge.