Novel endmills are provided. Such endmills have a body with outside diameter (OD), and outer surface, and a longitudinal axis, a plurality of flutes, helical in some embodiments. Flutes include a narrow leading edge land portion with circular segment profile and having flute cutting edge portions along a substantially uniform circumferential location, with an eccentric relief margin rotationally rearward of the narrow leading edge land portions. Face portions are provided with face cutting edge portions, and with a first dish portion adjacent each of the cutting edge portions sloping inwardly and downwardly generally toward a central longitudinal axis at a first dish angle alpha (α). Corner blend portions extend from flute cutting edge portions to the face cutting edge portions. Corner blend portions are provided in a variety of profiles, including an embodiment wherein the profile of the corner blend portions are truncated before the segment of curvature becomes tangential to the face cutting edge portions. In various embodiments, one or more coolant passageways are provided, and in an embodiment, an exit port for coolant is provided at the center of rotation of the end face portion.

A tool head is for machining edges of a workpiece and includes a first tool section with first blades and a second tool section with second blades. The second blades are positioned between the first blades when seen in the circumferential direction. The second section is movable relative to the first section in the direction of the longitudinal axis between a passive and active position. The second blades are axially recessed relative to the first blades in the passive position and project axially outwards between the first blades in the active position. The tool head has a pressure switching mechanism for moving the second tool section between the passive and active position. In a tool system, the tool head and an actuation element can be moved axially relative to each other. The at least one actuation surface and the actuation element are configured to be axially pressed towards each other.

A tool is for inside chip-separating processing of a tube. The tool has a housing which is rotatable around a center axis of the tool, a blade holder which is rotatable around an axis of rotation, there being a plurality of blades positioned along the periphery of the blade holder, and a guide element which is arranged to guide the blade holder between an active position and a passive position. Each of the blades has a surrounding cutting edge which forms a working plane which is arranged perpendicularly to the centre axis of the tool. The blades are arranged for alternating contact with the tube when the blade holder is rotating and is in the active position.

A coated cutting tool and a process for the production thereof is provided. The coated cutting tool includes a substrate and a hard material coating, the substrate being selected from cemented carbide, cermet, ceramics, cubic boron nitride, polycrystalline diamond or high-speed steel. The hard material coating includes a (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers. The layer stack has an overall atomic ratio of Ti:Al within the (Ti,Al)N layer stack within the range from 0.33:0.67 to 0.67:0.33, a total thickness of the (Ti,Al)N layer stack within the range from 1 μm to 20 μm, each of the individual (Ti,Al)N sub-layers within the (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers having a thickness within the range from 0.5 nm to 50 nm, each of the individual (Ti,Al)N sub-layers within the (Ti,Al)N layer stack of alternately stacked (Ti,Al)N sub-layers being different in respect of the atomic ratio Ti:Al than an immediately adjacent (Ti,Al)N sub-layer, and other characteristics.

A rotary cutting tool includes a tool body including a shank portion and a cutting portion adjoining the shank portion. The cutting portion has a plurality of blades separated by helically twisted flutes. A tunable vibration absorber is disposed within an internal cavity formed in the cutting portion and has a shape that follows the helically twisted flutes. The tunable vibration absorber includes an absorber mass and a resilient material disposed between the absorber mass and an outer wall of the internal cavity. In one aspect, the tunable vibration absorber is tuned to a desired frequency by selecting the mechanical properties of the absorber mass and the resilient material. In another aspect, the tunable vibration absorber is tuned by controlling a pressure of fluid within a main internal fluid cavity disposed within the tunable vibration absorber.

A tool for the rotary and cutting machining of workpieces includes a plurality of blades arranged on the tool body and arranged in blade arrangements, and having a securing element that secures the blade arrangements to the tool body so that the blades cannot detach from the tool body during operation. The tool body is produced from plastic. The blades are incorporated into the tool body and the securing element provides a securing strip that is incorporated into the tool body and partially encloses the blade arrangements.

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.

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.

Rotatable assembly (10) having one end (12) adapted to be secured to a rotatable support for rotating the rotatable assembly (10) about a rotational axis (28), the rotatable assembly (10) comprising: a main body (18) having a cavity (56); a damping mass (38) arranged within the cavity (56) and movable in radial directions (30), substantially perpendicular to the rotational axis (28), relative to the main body (18); a damping structure (36) arranged to support the damping mass (38) relative to the main body (18) and arranged to damp vibrational movements of the damping mass (38) relative to the main body (18) in the radial directions (30); wherein the damping structure (36) comprises a plurality of spring elements (40); and wherein each spring element (40) has a flat appearance.