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 fiber-reinforced plastic. Cutting element chambers are formed in the supporting body, open to underside, in each of which one cutting element is replaceably arranged.

An end mill includes end cutting edges located at a front end side of a cutting edge portion of a body including rotation axis, peripheral cutting edges, and helically extending flutes. Each of the peripheral cutting edges and the flutes are alternately located from the front end side to a rear end side, and a first distance between a deepest position of the flute and the rotation axis is equal among the respective flutes in a cross section taken along the rotation axis. The flute includes a first region located at a side of the peripheral cutting edge and includes the deepest position, a second region located at a side of a heel, and a boundary. A second distance from the rotation axis to the boundary located at the rear end side is larger than the second distance located at the front end side.

The milling cutter according to the present invention consists of insert holders (2) where these insert holders (2) project from a carrier disc (1) which is adapted for clamping onto the spindle of a machine tool, and the individual holders (2) are connected with one another by braces (3). Arms (5) are provided between the holders (2) and the carrier disc (1).

A rotating tool includes a tool body which rotates around an axial line, four or more chip discharge grooves which are formed on an outer periphery of the tool body with gaps therebetween in a circumferential direction, and a plurality of cutting inserts which are arranged in multiple stages along the chip discharge grooves. In a cross-sectional view perpendicular to the axial line, when a center angle formed between a pair of virtual straight lines which connects each of the cutting edges of the cutting inserts disposed in a pair of chip discharge grooves adjacent to each other in the circumferential direction and the axial line to each other is defined as an angle, a plurality of angles formed around the axial line include one maximum angle (max), one minimum angle (min), and two or more angles other than the angle (max) and the angle (min).

A tool body for a milling tool includes a front and rear end, an envelope surface extending between the front and rear ends, a central recess extending configured to receive coolant from a machine spindle, at least one insert seat for a cutting insert, and at least one coolant passageway for passage of coolant from the central recess to the exterior of the tool body. The coolant passageway has a first portion extending from the central recess towards the envelope surface, and a second portion extending from the first portion to an outlet in the tool body exterior. The second portion of the coolant passageway is directed towards the insert seat such that, when a cutting insert having a flank face is mounted in the insert seat and the flank face faces outward, coolant from the outlet passes along the flank face towards the cutting edge of the insert.

A cutting tool according to one aspect of the present disclosure includes a shaft portion and cutting edge portions. The main cutting edge portions have a main cutting edge. In a section within ?30% of a blade length of a region from a center of the region in a direction along the central axis, the main cutting edge portions have first and second nick portions. The main cutting edge portions are formed in the region. The relationship between the first nick portion and the second nick portion satisfies at least one of a first condition and a second condition. The first condition is that a width of the first nick portion is different from a width of the second nick portion. The second condition is that a depth of the first nick portion is different from a depth of the second nick portion.

Methods and structures for forming anodization layers that protect and cosmetically enhance metal surfaces are described. In some embodiments, methods involve forming an anodization layer on an underlying metal that permits an underlying metal surface to be viewable. In some embodiments, methods involve forming a first anodization layer and an adjacent second anodization layer on an angled surface, the interface between the two anodization layers being regular and uniform. Described are photomasking techniques and tools for providing sharply defined corners on anodized and texturized patterns on metal surfaces. Also described are techniques and tools for providing anodizing resistant components in the manufacture of electronic devices.

Methods and structures for forming anodization layers that protect and cosmetically enhance metal surfaces are described. In some embodiments, methods involve forming an anodization layer on an underlying metal that permits an underlying metal surface to be viewable. In some embodiments, methods involve forming a first anodization layer and an adjacent second anodization layer on an angled surface, the interface between the two anodization layers being regular and uniform. Described are photomasking techniques and tools for providing sharply defined corners on anodized and texturized patterns on metal surfaces. Also described are techniques and tools for providing anodizing resistant components in the manufacture of electronic devices.

An insert attachment mechanism (100) detachably attaches a cutting insert (2) to an insert attachment part (21) of a tool body (3). The insert attachment mechanism includes an adjustment member (30) and a wedge member (10). The adjustment member (30) is arranged on an inner side of the cutting inset so as to act on the cutting insert in the insert attachment part. The adjustment member is advanceable and retractable in a direction of the central axis of a screw member (40) by rotating the screw member. The wedge member and the cutting insert are arranged on the outer side of the adjustment member in the insert attachment part and exert a pressing force against the cutting insert and an inner wall surface of the insert attachment part. The wedge member (10) is configured such that the screw member (40) is accessible from the outer side of the wedge member.

The present invention discloses a vertically-mounted milling cutter insert and a multitooth milling cutter, wherein the vertically-mounted milling cutter insert comprises a insert base and a cutter tip unit, the insert base is set with a mounting hole for mounting the vertically-mounted milling cutter insert onto the milling cutter wheel, and the cutter tip unit is mounted on the insert base, and the cutter tip unit has a double-cutter tip structure. In the invention, the vertically-mounted milling cutter insert is positioned via the fitting between a bent-plane structure in the vertically-mounted milling cutter insert and a positioning structure in the milling cutter wheel, and the bent-plane structure will not be abraded in use. Because the bent-plane structure will not be abraded, reliable positioning may be guaranteed when two cutter tips are used.