The present invention relates to a method for producing a fiber-plastics-composite tool component (1) having a matrix system (6) that has embedded fibers, PBO fibers (4) being selected as the fiber component and a thermosetting plastics matrix (8) being used as the matrix component of the matrix system (6) (S1), which thermosetting plastics matrix has such adhesion to the PBO fibers (4) in the hardened fiber-plastics composite (2) that the coefficient of thermal expansion of the PBO fibers (4) is imparted to the matrix system (6). The invention also relates to a load-bearing tool component (1) of a chip-removing tool in the design of a fiber-plastics-composite press-molded part, the load-bearing tool component (1) comprising a matrix system (6) that has a thermosetting matrix component (8) and comprising PBO fibers (4) embedded into said thermosetting matrix component.

A cutting tool including a rake face, a flank face, and a cutting edge portion, comprising a substrate and an AlTiN layer, the AlTiN layer including cubic Al.sub.xTi.sub.1-xN crystal grains, Al having an atomic ratio x of 0.7 or more and 0.95 or less, the AlTiN layer including a central portion, the central portion at the rake face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the flank face being occupied in area by (200) oriented crystal grains at a ratio of 80% or more, the central portion at the cutting edge portion being occupied in area by (200) oriented crystal grains at a ratio of 80% or more.

A cutting insert for a shoulder milling tool has a trigonal shape and includes a first surface, a second surface, and a circumferential surface extending between the first surface and the second surface. The circumferential surface includes a countersunk circumferential waist portion. The circumferential surface has a first and a second clearance surface extending along a first and a second main cutting edge. Each of the first and second clearance surfaces forma a negative nominal clearance angle. Each of the first and second main cutting edges is arranged inside the countersunk circumferential waist portion, as seen in the view towards the first and second surfaces, respectively.

Provided is a cutting insert, which has excellent chip discharge performance even when formed with multiple corners superior in economic efficiency. A first ridgeline at which an upper surface and a circumferential side surface intersect each other includes a plurality of corners disposed at equal intervals and a plurality of main cutting edges disposed one by one between the corners adjacent to each other. A distance between the corners adjacent to each other is equal to or less than 60% of the diameter of a circle inscribed within the ridgeline. The main cutting edges includes a first cutting edge that is linearly formed and a second cutting edge that is linearly formed. The length of the second cutting edge is equal to or less than half the length of the first cutting edge and is positioned closer to a center side of the cutting insert than an extension line of the first cutting edge is. The circumferential side surface includes a first side surface facing the first cutting edge and a second side surface facing the second cutting edge. A clearance angle of the first side surface is smaller than that of the second side surface.

Provided is a cutting insert, which has excellent chip discharge performance even when formed with multiple corners superior in economic efficiency. A first ridgeline at which an upper surface and a circumferential side surface intersect each other includes a plurality of corners disposed at equal intervals and a plurality of main cutting edges disposed one by one between the corners adjacent to each other. A distance between the corners adjacent to each other is equal to or less than 60% of the diameter of a circle inscribed within the ridgeline. The main cutting edges includes a first cutting edge that is linearly formed and a second cutting edge that is linearly formed. The length of the second cutting edge is equal to or less than half the length of the first cutting edge and is positioned closer to a center side of the cutting insert than an extension line of the first cutting edge is. The circumferential side surface includes a first side surface facing the first cutting edge and a second side surface facing the second cutting edge. A clearance angle of the first side surface is smaller than that of the second side surface.

A tool for assisting the process of marking or cutting structures in a predefined manner is disclosed. The tool comprises a rod member having a longitudinal axis and a plate member rotatably attached to the rod member. The tool comprises an arm removably attached to the rod member and to the plate member. The plate member is rotatably attached to the rod member by means of a structure comprising a joint and one or more magnetic or magnetizable structures configured to provide a magnetic force between the rod member and the plate member.

A tool for assisting the process of marking or cutting structures in a predefined manner is disclosed. The tool comprises a rod member having a longitudinal axis and a plate member rotatably attached to the rod member. The tool comprises an arm removably attached to the rod member and to the plate member. The plate member is rotatably attached to the rod member by means of a structure comprising a joint and one or more magnetic or magnetizable structures configured to provide a magnetic force between the rod member and the plate member.

An indexable cutting tool in which cutting ability can be ensured while suppressing the occurrence of chatter vibration. In outer circumferential blades provided on a tool main body, the axial rake angles are all set to the same angle, and so are the radial rake angles. With this configuration, the cutting ability of an indexable cutting tool can be ensured. Furthermore, the disposing intervals, in the circumferential direction of the tool main body, of the plurality of outer circumferential blades that are provided in, at least, a first groove of a plurality of groove are set to unequal values. With this configuration, it is possible to make the intervals at which the outer circumferential blades adjoining in the axis direction contact a workpiece unequal, suppressing resonance of periodic vibration occurring in cutting and, thus, suppressing the occurrence of chatter vibration.

A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.

A cutting insert has a seating surface, an outer peripheral surface, a top surface, and an attachment hole. The cutting edge includes a curved cutting corner edge portion, a first cutting edge portion, and a second cutting edge portion. The top surface includes a first rake face contiguous to the first cutting edge portion, a second rake face contiguous to the second cutting edge portion, and a third rake face contiguous to the cutting corner edge portion and also contiguous to the first and second rake faces. The third rake face has a first region contiguous to the first rake face and a second region contiguous to the second rake face. The first rake face and the first region each have a rake angle which is a positive angle. The second rake face and the second region each have a rake angle which is a negative angle.