Abstract:
This document provides orthopedic and dental devices and methods for their use. For example, novel bone drills and dental drills are described. The bone and dental drills have at least some centers of mass that are offset from the drills' axis of rotation. Accordingly, the bone and dental drills may rotate and cut using a precessional pattern of motion. The design facilitates bone cutting, chip formation and hauling capacity, irrigation and bone harvesting. In some embodiments, the bone chips are collected in a removable apparatus fixed to the distal portion of the drill, and the collected bone chips can be used for bone grafting.
Abstract:
This document provides novel drills and/or reamers that are well-suited for making holes in a variety of materials including, but not limited to, metals, ceramics, glass, wood, plasterboard, plastics, stone, composites, synthetics, silicon or multi-layered or hybridized substrates. In some embodiments, these drilling devices have some centers of mass that are offset from the axis of rotation. Accordingly, such drills and/or reamers may rotate and cut using a precessional pattern of motion. Precessional cutting devices may display a mechanical wave pattern in relationship to the longitudinal axis of the device. If the cutting device is fabricated from a flexible material, for example Nickel-Titanium, bodily deflection of the device may result during rotation.
Abstract:
A method of joining a plurality of parts to form a unitary body comprising the steps of providing at least two sintered parts, each of the parts being formed of cemented carbide or cermet; assembling the at least two sintered parts into a shape of a unitary body, wherein each of the at least two parts has a joining surface and when each joining surface is brought into contact, the joined surfaces form a bonding interface therebetween; and subjecting the assembled at least two sintered parts to a vacuum or gas atmosphere, without the application of external pressure, and to a temperature sufficient to fuse the assembled at least two sintered parts together at the bonding interface to form the unitary body.
Abstract:
A method of joining a plurality of parts to form a unitary body includes the step of providing at least two sintered parts, each of the parts being formed of carbide or cermet, and: at least one of the parts having at least one inner cavity. The at least two sintered parts can be assembled into a shape of a unitary body, wherein each of the at least two parts has a joining surface and when each joining surface is brought into contact, the joined surfaces form a bonding interface therebetween. The assembled parts are subjected to a vacuum or gas atmosphere, without the application of external pressure, and to a temperature sufficient to fuse the at least two sintered parts together at the bonding interface to form the unitary body.
Abstract:
A method for manufacturing a cemented carbide body (1), comprising the following steps: - forming a first part (2, 9, 14, 17) of a first powder composition comprising a first carbide and a first binder phase, - sintering the first part (2) to full density in a first sintering operation, - forming a second part (3) of a second powder composition comprising a second carbide and a second binder phase, - sintering the second part (3) to full density in a second sintering operation, - bringing a first surface (4) of the first part (2) and a second surface (5) of the second part (3) in contact, and - joining the first and second surface in a heat treatment operation.
Abstract:
A method for manufacturing a cemented carbide body (1), comprising the following steps: - forming a first part (2, 9, 14, 17) of a first powder composition comprising a first carbide and a first binder phase, - sintering the first part (2) to full density in a first sintering operation, - forming a second part (3) of a second powder composition comprising a second carbide and a second binder phase, - sintering the second part (3) to full density in a second sintering operation, - bringing a first surface (4) of the first part (2) and a second surface (5) of the second part (3) in contact, and - joining the first and second surface in a heat treatment operation.
Abstract:
Die Erfindung betrifft ein Einschraubwerkzeug (1) und eine Werkzeugaufnahme (2) für ein derartiges Einschraubwerkzeug. Das Einschraubwerkzeug (1) enthält einen Werkzeugkopf (3) und einen Werkzeugschaft (4) mit einem Außengewinde (5) und einem zwischen dem Werkzeugkopf (3) und dem Außengewinde (5) angeordneten Abstützbereich. Der Abstützbereich wird erfindungsgemäß durch zwei konische Anlageflächen (6, 8) mit unterschiedlichen Kegelwinkeln gebildet.
Abstract:
Es wird eine Werkzeugmaschine bereitgestellt, umfassend ein Maschinengestell, mindestens eine Trägereinrichtung für ein Werkzeug oder ein Werkstück, durch die ein wirkendes Werkzeug oder ein Werkstück, auf das mit einem Werkzeug eingewirkt wird, bei der Werkstückbearbeitung gehalten wird, und eine Halteeinrichtung, welche die mindestens eine Trägereinrichtung gegenüber dem Maschinengestell fest oder beweglich hält, wobei eine Lagereinrichtung vorgesehen ist, durch welche die mindestens eine Trägereinrichtung an der Halteeinrichtung schwimmend gelagert ist mit einer Verschieblichkeit in einer Verschiebungsrichtung längs eines Verschiebungswegs, und wobei eine Verstelleinrichtung vorgesehen ist, durch welche die Position der mindestens einen Trägereinrichtung längs des Verschiebungswegs einstellbar und feststellbar ist.