Face milling cutter head with rod-shaped cutters

A face milling cutter head (1) for producing trapezoidal grooves, e.g. for toothing in bevel gears having arcuate tooth flank lines, the head having a main axis (M);

• comprising a substantially disk-shaped carrier body portion (2) with a locking ring (3) surrounding the same;
• said body portion having therein at least two grooves (4) for a corresponding number of removably inserted, substantially axially extending, rod-shaped milling cutters (5) having respective longitudinal shaft axes (A), said grooves being substantially equidistant from the main head axis;
• said cutters having chip bearing surfaces (54) that are tilted with respect to said shaft axes, head and respective flank clearance surfaces (15, 16), head and corresponding flank cutting edges (17, 18), and at least three shaft surfaces (41, 43, 45, 47);
• wherein cutting lines (13) are formed on said cutters between said head and said flank clearance surfaces, said cutting lines forming reference planes (14) with said main head axis;
• and wherein the spatial arrangement of said cutters, said surfaces and said edges is such that said reference planes run substantially parallel with at least one (43) of said shaft surfaces and with said main head axis;
• said planes being constituted, on the one hand, between said cutting lines and, on the other hand, by a second line (MM) that is parallel with said main head axis and passes through said cutting lines;
• further comprising at least one pre-tensioning element (34, 35, 36) assigned to at least some of said cutters to allow position-true adjustment of the latter within said carrier body portion, said elements being in cooperation with said locking ring;
• and wherein said pre-tensioning elements include a pressure member (35) between said locking ring and said cutter, and at least one unit (34) constituted by a threaded stud with a spring-action bolt that can be manually adjusted with respect to said pressure member.

A face milling cutter head (1) for producing trapezoidal grooves, e.g. for toothing in bevel gears having arcuate tooth flank lines, the head having a main axis (M);

• comprising a substantially disk-shaped carrier body portion (2) with a locking ring (3) surrounding the same;
• said body portion having therein at least two grooves (4) for a corresponding number of removably inserted, substantially axially extending, rod-shaped milling cutters (5) having respective longitudinal shaft axes (A), said grooves being substantially equidistant from the main head axis;
• said cutters having chip bearing surfaces (54) that are tilted with respect to said shaft axes, head and respective flank clearance surfaces (15, 16), head and corresponding flank cutting edges (17, 18), and at least three shaft surfaces (41, 43, 45, 47);
• wherein cutting lines (13) are formed on said cutters between said head and said flank clearance surfaces, said cutting lines forming reference planes (14) with said main head axis;
• and wherein the spatial arrangement of said cutters, said surfaces and said edges is such that said reference planes run substantially parallel with at least one (43) of said shaft surfaces and with said main head axis;
• said planes being constituted, on the one hand, between said cutting lines and, on the other hand, by a second line (MM) that is parallel with said main head axis and passes through said cutting lines;
• further comprising at least one pre-tensioning element (34, 35, 36) assigned to at least some of said cutters to allow position-true adjustment of the latter within said carrier body portion, said elements being in cooperation with said locking ring;
• and wherein said pre-tensioning elements include a pressure member (35) between said locking ring and said cutter, and a profiled spring element (36) that urges said pressure member toward said cutter.