A projection exposure apparatus has a vibration damper with a holder and a mass that is connected to the holder via a damping element. The vibration damper comprises a temperature control device for the temperature control of the damping element. The disclosure also relates to a method for designing a vibration damper.

A damping device for absorbing and/or damping vibrations of a vehicle part or isolating and/or damping a vibrating vehicle component includes a mass element, a fastening element for fastening the damping device to a vehicle part, and a spring device connecting the mass element to the fastening element to be capable of oscillation. The mass element or fastening element having a fastening device for fastening the spring device. The mass element and/or vehicle part comprises a supporting devices for supporting the spring device, wherein the spring device comprises a fastening device fixed to the fastening means and at least two supporting portions supported in opposite axial direction on the supporting device. The fastening device and supporting device are spaced apart in axial direction such that when supporting sections bear against the supporting device, the spring device is preloaded. The invention relates to a method of assembling a damping device.

A damping device for absorbing and/or damping vibrations of a vehicle part or isolating and/or damping a vibrating vehicle component includes a mass element, a fastening element for fastening the damping device to a vehicle part, and a spring device connecting the mass element to the fastening element to be capable of oscillation. The mass element or fastening element having a fastening device for fastening the spring device. The mass element and/or vehicle part comprises a supporting devices for supporting the spring device, wherein the spring device comprises a fastening device fixed to the fastening means and at least two supporting portions supported in opposite axial direction on the supporting device. The fastening device and supporting device are spaced apart in axial direction such that when supporting sections bear against the supporting device, the spring device is preloaded. The invention relates to a method of assembling a damping device.

An elongated tool holder includes a mass housing portion having a housing peripheral surface, an outer sleeve having a sleeve hole wall surface, and an anti-vibration arrangement. An elongated groove is formed in one of the housing peripheral surface and the sleeve hole wall surface. In an assembled state of the tool holder, the groove, which is located at a common interface of the housing peripheral surface and the sleeve hole wall surface, forms a groove coolant channel. The groove coolant channel forms part of an overall tool holder coolant channel which is spaced apart from the anti-vibration arrangement, and thus isolates the coolant from the anti-vibration arrangement. A cutting tool incorporates the tool holder.

A mount bushing includes an outer ring adapted for connection to a mount structure. A tubular bushing insert is disposed inside the outer ring and a main elastomeric isolation arrangement disposed between the outer ring and the tubular bushing insert. A secondary elastomeric element is disposed inside the tubular bushing insert, wherein the secondary elastomeric element is isolated from the main elastomeric isolation element by the tubular bushing insert. A structural tube is disposed inside the secondary elastomeric element and a mounting bolt is inserted through the structural tube.

A dynamic damper for suppressing vibration generated by a gear attached to a rotation shaft, the dynamic damper, includes: a mass body that is disposed inside a rotation shaft having a hollow shape and extends along a shaft center of the rotation shaft; and an elastic body that couples the mass body to the rotation shaft. Further, a flow path for lubricating liquid to flow is provided between an inner peripheral surface of the rotation shaft and the mass body, and the flow path is formed by the inner peripheral surface of the rotation shaft at an axial position where the elastic body is disposed.

A dynamic damper includes: a mass body that is disposed inside a rotation shaft and extends along a shaft center of the rotation shaft; and an elastic body interposed between the mass body and the rotation shaft. Further, the mass body is allowed to vibrate to a linear motion state, the elastic body includes: first and second contact surfaces, when the gear generates vibration so as to fall from a radial direction of the rotation shaft to an axial direction side of the rotation shaft, compressive stress acts on the elastic body by the mass body vibrating so as to push the first contact surface in response to the vibration, and when the gear generates vibration along the axial direction, compressive stress acts on the elastic body by the mass body coming in the linear motion state and vibrating so as to push the second contact surface.

A damper unit for use in a vibration-reducing assembly for a steering wheel is disclosed. The damper unit includes a slider configured, upon horn activation, to slide on a guide shaft. A damper element made from an elastomeric material is arranged on a first part of the slider. A molded horn spring element is molded directly on a second part of the slider and is configured to exert a spring force on the slider. The damper unit provides a unitary structure providing both a vibration damping function and a horn spring function in one single assembly unit, reducing the number of components to assemble. A vibration-reducing damper assembly including one or more such damper units is also disclosed, as well as a method of making such a damper unit.

A damper unit for use in a vibration-reducing assembly for a steering wheel is disclosed. The damper unit includes a slider configured, upon horn activation, to slide on a guide shaft. A damper element made from an elastomeric material is arranged on a first part of the slider. A molded horn spring element is molded directly on a second part of the slider and is configured to exert a spring force on the slider. The damper unit provides a unitary structure providing both a vibration damping function and a horn spring function in one single assembly unit, reducing the number of components to assemble. A vibration-reducing damper assembly including one or more such damper units is also disclosed, as well as a method of making such a damper unit.

The invention relates to a vibration elimination system, comprising a shielding plate (2) for a motor component, at least one vibration elimination element (10) that is fastened to the shielding plate (2), wherein each vibration damping element (10) comprises a spring-mass system that is capable of vibration, the spring force and mass of which are dimensioned such that said spring-mass system is matched to a predetermined vibration frequency of the shielding plate (2).