An elongated tool holder includes a tool anti-vibration component having a component housing portion and an anti-vibration arrangement. The anti-vibration arrangement includes an enclosed interior component cavity formed in the component housing portion. The anti-vibration arrangement also includes a vibration absorber portion disposed within the component cavity that is integrally formed with the component housing portion to have unitary one-piece construction therewith. The vibration absorber portion includes a vibration absorbing mass and at least one elastic suspension member through which the vibration absorbing mass is connected to the component housing portion. The component cavity includes an oscillating space located between an inner surface of the component housing portion and the vibration absorber portion. The vibration absorbing mass is configured to oscillate within the oscillating space upon elastic deformation of the at least one suspension member. A cutting tool is provided with the tool holder.

A tool holder holds a cutting tool that cuts a workpiece while revolving about a rotational axis. The tool holder has a fixed part and a cutting part. The fixed part is held by a main shaft of a machine tool. The cutting part is provided integrally with the fixed part and has an asymmetric shape with respect to the rotational axis. The cutting tool is attached to the cutting part. The cutting part has a one-side part and an other-side part. The one-side part has a largest protruding amount from the rotational axis in the cutting part when viewed from an axial direction. The other-side part is located on a side of the rotational axis opposite to the one-side part. A bulk density of the one-side part is smaller than a bulk density of the other-side part.

A damper assembly for use with a non-rotating tool holder includes a hollow ram for supporting a non-rotating tool and a damper assembly mounted in the hollow ram for absorbing vibrations of the ram. The damper assembly includes a front plate and a rear plate, an upper tie rod and a lower tie rod extending between the front plate and the rear plate, and a damper mass mounted between the front plate and the rear plate. Ring dampers are mounted between the damper mass and the front and rear plates, and suspension springs are mounted between the upper tie rod and the lower tie rod. The suspension springs carry the weight of the damper mass so that the ring dampers do not have to carry the weight of the damper mass, and the damper mass is free to respond to vibrations in the ram.

An external turning tool includes an elongated tool body with opposite clamping and cutting portions which define an axial direction therebetween. The cutting portion includes a damping mechanism with an elongated damping member which defines an elongation axis. The elongation axis forms a non-zero damping member angle with the axial direction.

A damper assembly for use with a non-rotating tool holder includes a hollow ram for supporting a non-rotating tool and a damper assembly mounted in the hollow ram for absorbing vibrations of the ram. The damper assembly includes a front plate and a rear plate, an upper tie rod and a lower tie rod extending between the front plate and the rear plate, and a damper mass mounted between the front plate and the rear plate. Ring dampers are mounted between the damper mass and the front and rear plates, and suspension springs are mounted between the upper tie rod and the lower tie rod. The suspension springs carry the weight of the damper mass so that the ring dampers do not have to carry the weight of the damper mass, and the damper mass is free to respond to vibrations in the ram.

The present invention provides an arbor damping device, including a rod body, a damper, two flexible absorbers and at least one flexible damping adjusting member. The rod body has an internal chamber, and the internal chamber includes a circumferential wall and two end walls. The damper is received in the internal chamber. The damper includes a side surface opposite to the circumferential wall and two end surfaces respectively opposite to the two end walls. The two flexible absorbers are disposed between the two end walls and the two end surfaces respectively. The at least one flexible damping adjusting member is radially disposed between the circumferential wall and the side surface, and axially disposed between the end walls and the two flexible absorbers.

The present invention provides an arbor damping device, including a rod body, a damper, two flexible absorbers and at least one flexible damping adjusting member. The rod body has an internal chamber, and the internal chamber includes a circumferential wall and two end walls. The damper is received in the internal chamber. The damper includes a side surface opposite to the circumferential wall and two end surfaces respectively opposite to the two end walls. The two flexible absorbers are disposed between the two end walls and the two end surfaces respectively. The at least one flexible damping adjusting member is radially disposed between the circumferential wall and the side surface, and axially disposed between the end walls and the two flexible absorbers.

An anti-vibration device for the machining of a shaft includes a first fixed ring intended to be kept inside a shaft by a shoulder, the anti-vibration device including: at least one first external groove and at least one first external seal for forming at least one contact with the internal surface of the shaft; at least one first internal circumferential groove and at least one first internal seal for forming at least one contact with the external surface of the bar; an internal circumferential cavity that is able to cause the circulation of a fluid arriving through a first duct and leaving through a second duct, the first duct and second duct passing through the radial thickness of the anti-vibration device, the internal circumferential cavity making it possible to realize a vibration-damping function when a fluid passes through it.

The present invention relates to a damping arbor, including a rod body and a damping mechanism. A diameter of the rod body is larger than or equal to 60 mm. The rod body includes an end surface for being connected with a cutter head assembly and further defining an axis. The damping mechanism includes at least three shock absorbing assemblies. The at least three shock absorbing assemblies are inserted into the end surface and surrounding the axis with equal intervals.

An anti-vibration damper for tools for machining of metallic work pieces is provided. For improving the damping in order to be more effective under rough includes a vibration damping device received in a hollow cylindrical space of a tool member. The vibration damping device includes a plurality of rotationally symmetrical stacked on top of each other to form a stack. A part of mutually facing upper and lower surfaces of adjacent members is spaced at a distance from each other by elastically deformable elements. The outer diameter of the stack is smaller than the inner diameter of the hollow cylindrical space of the tool member, thereby providing a cylindrical gap, which is substantially filled with spherical balls, wherein clear gap width between the inner diameter of the hollow cylindrical space and the common outer diameter of the stack deviates from any integer sum of the ball diameters.