Abstract: An overhead transport vehicle includes an elevator including a base and a first support supporting the base to be vertically movable from below in a vertical direction through a vibration isolator. The vibration isolator includes a first biasing portion in contact with both of the support and the base to urge a first body and the base in a direction away from each other, and a second biasing portion at one of the first body and the base to come into contact with both of the first body and the base and urge the first body and the base in a direction away from each other when a load equal to or greater than a predetermined value is applied to the first biasing portion.

Abstract: A barrier transition framework such as for use as a bridge transition, is disclosed for connection to a concrete anchor at an entrance, comprising a tubular upper transition chord having first and second beveled ends, and a tubular lower transition chord having first and second beveled ends. The first beveled ends of each of the upper and lower chords are welded to an approach deflector. The second beveled ends of each of the upper and lower chords are welded to an anchorage plate. A transition assembly is formed by connecting thrie-beams to the road-side of the transition framework. A thrie-beam may also be connected to the field-side of the transition framework. The disclosed transition framework provides a preassembled solid four bar structure with exceptional resistance to deflection in both the vertical and horizontal planes, that spans a greater distance than convention transitions.

Abstract: The invention relates to a device for influencing a backward movement of a seat (1), in particular a backrest part (1.1) of the seat (1), with at least one deformation element (4) arranged in a hinged area (7) of the seating part (1.2) of the seat (1), the deformation element (4) being configured such that the deformation element can be deformed due to a force acting on the seating part (1.2) and/or the back part (1.1) at a predefined torque curve. The invention also relates to a seat (1), in particular a vehicle seat, comprising a seating part (1.2), a backrest part (1.1) and the type of device.

Abstract: A decoupling bearing for a suspension strut or a pneumatic suspension strut may include a suspension strut cup and a connecting element that can be connected to a vehicle body. A damping element may be arranged between the suspension strut cup and the connecting element. The suspension strut cup may be connected to the connecting element by the damping element. Further, the damping element may be adhesively bonded to the connecting element and the suspension strut cup in a force-transmitting manner, and/or the damping element may be adhesively bonded to the connecting element and an intermediate element in a force-transmitting manner. The intermediate element may be connected to the suspension strut cup.

Abstract: There are improved a vibration absorption characteristic and an impact absorption characteristic. In a suspension mechanism 1 of the present invention, first and second dampers (150, 160) are suspended in parallel between an upper frame (120) and a lower frame (110) with mounting angles different from each other. For this reason, the smaller mounting angle the damper has, the smaller a vertical component of damping force becomes, and the damping force which acts on the upper frame (120) and the lower frame (110) which move up and down relatively is moderate in effectiveness as compared with a case of disposing all the dampers at the same mounting angle. Thus, a sense of incongruity in which strong damping force acts abruptly is suppressed and the vibration absorption characteristic and the impact absorption characteristic are improved, which leads to improvement in ride comfort.

Abstract: Noise insulation may be provided by an anti-resonant panel that includes a base panel including a base panel core material and two base panel face sheets, where each of the two base panel face sheets is adjacent to an opposite side of the base panel core material. The anti-resonant panel further includes at least one stiffener-member positioned along the base panel in a defined area of the base panel, where the defined area is less than a full area of the base panel. The stiffener-member includes a stiffener-member core having a top surface, a bottom surface in contact with the base panel, a plurality of cells having walls that extend from the top surface to the bottom surface, and a stiffener-member face sheet that is seamlessly integrated with the walls of the plurality of cells along the top surface.

Abstract: Described is a fibre composite component designed as a spring, comprising at least one spring section and at least one force transfer structure (2). In the end portion forming or surrounding the force transfer element (3) the fibre composite material of the fibre composite component (1) is divided, in a plane perpendicular to the longitudinal direction of the force transfer structure (2), into at least two fibre composite material strands (4, 4.1, 4.2). Two adjacent fibre composite strands (4, 4.1, 4.2) run in opposite directions, overlapping over a specific angular portion and each forming an eye, with their mutually opposed side faces (7) force-transmittingly connected in the overlapping portion.

Abstract: A shock absorber for a vehicle may include a flow path provided in a rod valve to allow an oil film to be formed between a cylinder and the rod valve during relative movements of a strut rod and the cylinder, and the oil film is used to prevent friction from occurring between the cylinder and the rod valve during steering.

Abstract: A lead-lag damper arranged inside a blade of a rotor of a rotary wing aircraft. The lead-lag damper comprises an inner strength member provided with a cage in which a ball-joint connection is arranged, an outer strength member for securing to the blade, and an elastomer material member arranged between the two strength members. The two strength members and the elastomer material member extending beyond the zone around the cage so that the relative movements between two strength members resulting from the movements of the blade are damped by deformations of the elastomer material member, at least a portion of the lead-lag damper being designed to occupy a portion of the inside of the blade that is conventionally filled with foam.

Abstract: A reel braking adjustment device includes a tensile force-related information acquisition unit and a braking parameter correction unit. The tensile force-related information acquisition unit is configured to acquire tensile force-related information. The tensile force-related information is information that is related to tensile force acting on a fishing line and detected during a fishing line discharge period in which the fishing line is released from a dual-bearing reel configured to brake rotation of a spool based on a braking parameter. The braking parameter correction unit is configured to correct braking parameters based on temporal changes in the tensile force-related information acquired by the tensile force-related information acquisition unit.

Abstract: A coupler telescopic apparatus comprises a housing and a drawbar capable of extending and retracting along the housing, the housing is sleeved outside the drawbar, a limiting block is fixed arranged on an outer side face of the drawbar, a locking ring capable of coming into contact with the limiting block is sleeved inside the housing, and the locking ring is coaxial with the housing and rotatably connected to the housing; a through groove is axially formed on an inner surface of the locking ring, and the through groove correspond to the limiting block in shape, so that the limiting block passes through the through groove when the through groove is aligned with the limiting block, and then an extension of the drawbar is locked by rotating the locking ring to block the limiting block after the extension of the drawbar is completed. The present application can reduce space occupation and has simple structure.

Abstract: A motorcycle engine mount includes a frame plate to fit into a frame of the motorcycle; a power train unit plate to connect to an engine assembly of the motorcycle; an elastomer element secured between the frame plate and the power train unit plate; and a thrust block element secured between the frame plate and the power train unit plate; the elastomer element allows for vertical and longitudinal movement of the power train unit relative to the frame; and the thrust block element inhibits compression of the elastomer element from lateral forces.

Abstract: The present invention provides a method and apparatus for energy absorption and vibrational dampening in a horizontal plane. According to a first preferred embodiment, the present invention discloses an apparatus for damping vibration of a pole which includes a housing with a horizontal floor having an inward curved surface for achieving vibration attenuation at a middle portion thereof to form an enclosed chamber. According to a further aspect of the first embodiment, at least one damping weight is preferably disposed in the inward curved surface and is preferably substantially spherical in shape. According to a further preferred embodiment, at least one dampening weight of the present may preferably include a hollow, inner cavity. According to further aspects of the present invention, the dampening weight preferably may further include a granular material located within the inner cavity.

Abstract: A mass damper system has a damper mass carrier and a damper mass movably received at the damper mass carrier a lubricant supply, a lubricant collector, and a lubricant distributor radially offset to one another with the damper mass carrier, the lubricant supply arranged at a shorter radial distance from a central axis than the lubricant collector, and the lubricant distributor arranged at a greater radial distance from the central axis than the lubricant collector to collect lubricant supplied by the lubricant supply and to guide the lubricant through the lubricant distributor to the damper mass. A stop arrangement limits a deflection path of the damper mass relative to the damper mass carrier, and the lubricant distributor has a lubricant feed that leads from the lubricant collector to a constructional unit requiring intensive lubrication.

Abstract: A vibration damping system employs a component having a directionally sensitive element thereon, mounted to an aircraft, which experiences dynamic excitation that induces bending deflection in the component that will reorient the directionally sensitive element. At least one tuned mass damper is mounted on the component in an orientation in which an internal mass of the tuned mass damper is moveable such that the tuned massed damper absorbs and attenuates at least a portion of the deflective motion, to thereby suppress bending deflection of the component in the particular axial direction and generally maintain the linearity of the directionally sensitive element.

Abstract: A vibration-damping component, a gas turbine engine having the vibration-damping component and a method for forming such component are disclosed. The vibration-damping component comprises a body formed from an additive manufacturing material by an additive manufacturing process and defining a cavity within the body, and a vibration damper disposed within the cavity. The vibration damper comprises a damping element and a damping medium containing a viscoelastic material surrounding the damping element. The damping element has a relative motion when the component vibrates.

Abstract: An isolator configured to isolate a payload from unwanted vibrations and shocks. The isolator includes a housing having a first end and a second end opposite the first end, a primary chamber defined in the housing, a backpressure chamber defined in the housing, a conduit placing the primary chamber in fluid communication with the backpressure chamber, a backpressure membrane in the housing proximate the first end, an elastomer dome in the housing proximate the second end, and a shaft connected to the elastomer dome. The primary chamber and the backpressure chamber are between the backpressure membrane and the elastomer dome. The shaft is configured to be connected to the payload.

Abstract: Operating fluid container made of thermoplastic for a motor vehicle, with the following features: the operating fluid container has two openings in opposite container walls of the operating fluid container, and a stiffening element extending through both openings; and two stiffening element ends engage behind the container walls from the outside, such that the stiffening element counteracts a deformation caused by internal pressure of the operating fluid container, wherein the operating fluid container is characterized by the following features: a stabilizing element is arranged between at least one stiffening element end and a container wall; the stabilizing element has a through-opening through which the stiffening element extends; the stabilizing element has a first and a second thermoplastic; and the stabilizing element is welded to a container wall.

Abstract: A rear impact system for an electric vehicle, the rear impact system includes a rear crash element extending laterally along a rear of the electric vehicle. The rear crash element defines an interior having a number of ribs extending between a front surface and a rear surface of the rear crash element. The system includes a left crash beam coupled between a rear portion of a rear wheel arch of the electric vehicle and the rear crash element of the electric vehicle and a right crash beam coupled between the rear portion of the rear wheel arch and the rear crash element of the electric vehicle.

Abstract: An assembly for damping the movement of a vibrating body includes an energy dissipating material, a vessel, and a seal. The energy dissipating material may include one or more types of loose particles. The loose particles may include similar and/or dissimilar materials or a mixture thereof. The loose particles may at least partially fill the vessel. The vessel may be configured to conform to requirements of an environment of the vibrating body and to retain and/or store the loose particles. The seal may include a molded material, a plate, and/or a flange. In an embodiment, the plate may be at least partially encompassed within the seal, and the seal, plate, and/or flange may be configured to engage the vessel and/or to retain the loose particles within the vessel.

Abstract: A rotor blade configured to fold about a blade fold axis includes a first section and a second section. The first section is configured to mount to a rotor hub and includes a first connector having at least one first opening. The second section includes a second connector having at least one second opening. The second section is rotatably coupled to the first section and is configured to rotate about the blade fold axis between an aligned position and a rotated position. A linkage is operably coupled to the first section and the second section. The linkage includes a plurality of links loosely connected such that the linkage is configured to support the second section of the rotor blade only when the second section is in the rotated position.

Abstract: A weldless connection for connecting two components together, including first and second components having respective first faces which are disposed in flush engagement with each other, and having respective second faces which are planar and are substantially aligned with each other along a same plane, and a plate which is disposed so as overlap portions of the aligned second faces of the components. One edge of the plate is curved into a hook shape, a recess is formed into the second face of the first component and receives the curved edge of the plate therein for connecting the plate to the first component while permitting some relative movement between the plate and first component, and a portion of the plate which overlaps the second face of the second component is fixed thereto.

Abstract: A vibration control pad (5) comprises a gel elastic body (7) made of an elastic-viscous material and heavy-object support members (8) embedded in the gel elastic body (7). A protrusion (11) is formed only on either the top or bottom surface of the gel elastic body (7) or formed on each of the top and bottom surfaces of the gel elastic body (7) in such a manner as to cover part of the support bodies (8). The protrusion (11) securely contains the support bodies (8) in the gel elastic body (7) to prevent the support bodies (8) from being detached or separated from the gel elastic body (7) when the vibration control pad (5) is taken out of its packaging member for use.

Abstract: 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.

Abstract: A rotor comprising a hub and a plurality of lift assemblies. Each lift assembly is connected to two adjacent lift assemblies respectively by a first damper and a second damper. The first damper is hinged to a lift assembly about a first axis, and the second damper is hinged to said lift assembly about a second axis. A first plane contains a lead-lag axis of the lift assembly and orthogonally to the pitch axis of the lift assembly. The first axis is situated in a volume lying between the first plane and an axis of rotation of the rotor, the second axis being positioned outside said volume.

Abstract: The present invention relates to an shock absorber based on the cutting, inward-folding and crushing of composite tube, comprising a destructing cap, a flat-pressing cap, a cutter and a positioning tube. The cutter is positioned in the destructing cap, and has a lower end connected to an inner flange of the destructing cap and an upper end connected to the positioning tube. The positioning tube is positioned in the destructing cap and closely connected to the inner wall of the destructing cap, and has a lower surface in contact with the cutter. The destructing cap, the positioning tube and the composite tube are respectively provided with aligned pin holes, and bound together with a pin. Energy is absorbed through destruction generated due to cutting and inward-folding of the composition tube. Energy can also be absorbed through destruction generated due to the inward-folding of the composite tube, without using the cutter.

Abstract: Damping coefficient-regulating inductive heating systems are provided, as are isolator assemblies containing such inductive heating systems. In embodiments, the isolator assembly includes a damper coefficient-regulating inductive heating system and at least one isolator, which contains a hydraulic damper fillable with a damping fluid. The damper coefficient-regulating inductive heating system includes, in turn, an inductive heating device, a controller, and a sensor for monitoring data indicative of damping fluid temperature. The inductive heating device is positioned around a periphery of the hydraulic damper, such as the outer periphery of the damper, in a non-contacting relationship. During isolator operation, the controller receives data from the sensor and, in response thereto, controls the inductive heating device to selectively generate a varying magnetic field to induce heating of one or more damper components, such as metal bellows, in contact with the damping fluid.

Abstract: The spool brake device is equipped with a brake unit, a detector, and a controller. The controller controls the braking force by the brake unit based on the rotational speed of the spool detected by the detector. When the rotational speed is less than the predetermined rotational speed, the controller controls the braking force by the brake unit in the regular braking mode. In the regular braking mode, the controller changes the braking force by the brake unit according to the rotational speed. On the other hand, when the rotational speed is equal to or higher than the predetermined rotational speed, the controller controls the braking force by the brake unit in the emergency braking mode, during the period of predetermined time. In the emergency braking mode, the controller makes the braking force by the brake unit larger than the braking force in the regular braking mode.

Abstract: A torsion damper with at least one torque input disk and at least one torque output disk, wherein the torque input disk can move in circumferential direction relative to the torque output disk against the force of at least one spring storage, wherein the relative movement is damped by a friction device which generates a smaller friction torque in a first swivel angle range than in a second swivel angle range in that the friction device has at least two friction ring pairs which are rotatable opposite one another and which are activated depending on the swivel angle via a driving connection of at least one friction ring with the torque input disk. The driving connection has a spring element which is arranged functionally in series with the friction device and functionally in parallel with the spring storage.

Abstract: A variable stiffness structure configured to isolate a mass from unwanted vibrations includes a negative stiffness element and an actuator operatively coupled to the negative stiffness element. The actuator is configured to be actuated to control a stiffness of the negative stiffness element. The variable stiffness structure may also include a positive stiffness element coupled to the negative stiffness element.

Abstract: A crankshaft damper for attachment to one end of a crankshaft of an engine. The crankshaft damper includes an elastomeric member attached to a hub, and an inertia ring connected to the hub through the elastomeric member. Several different structures for cooling the elastomeric member are disclosed that dissipate heat away from the elastomeric member. Air flow is induced near the elastomeric member by providing air flow openings in the inertia ring or the elastomeric member.

Abstract: A damping mechanism configured for use with a coupling of a power transmission assembly is provided including a cylindrical body having a first end and a second opposite end. The first end is configured for attachment to a first component of a power transmission assembly. A groove is formed in an exterior surface of the cylindrical body adjacent the second end. A cylindrical ring generally complementary to the groove is positioned partially within the groove such that a void exists between an inner surface of the cylindrical ring and the cylindrical body within the groove. A viscous material is arranged within the void such that non-concentric movement of the cylindrical ring relative to the cylindrical body causes displacement of the viscous material.

Abstract: Disclosed is a panel that is produced by assembling a plurality of adjacent individual absorption blocks; each block in the panel is in the shape of a polyhedral pyramid frustum, of which the base is a regular six-sided polygon; each individual block including six lateral walls surrounded by a lower peripheral lip of which each section is provided with a complementary tenon or a mortise arranged so as to allow two adjacent individual blocks to be assembled, in particular by engagement, in the vertical direction, of a tenon and a mortise belonging respectively to one and the other of the two adjacent individual blocks.

Abstract: A component is provided for a turbine engine. The component can include an airfoil defining a surface, and an energy absorbing composite positioned on the surface of the airfoil or within the airfoil. The energy absorbing composite includes a shear thickening fluid distributed through a matrix.

Abstract: To improve the safety of passengers of a motor vehicle and road users in the case of a head-on collision, a deformation element is provided and includes a crossmember holder for mounting to a crossmember and a bumper plate that can be positioned next to a bumper of a motor vehicle. The deformation element is characterized in that a centrifugal force-operated release element for adjusting and locking the distance of the crossmember holder from the bumper plate is provided between the bumper plate and the crossmember holder. A first distance of the bumper plate from the crossmember holder, starting from a normal position, is greater in a first position than a distance in a second position.

Abstract: To improve the safety of passengers of a motor vehicle and road users in the case of a fronted collision, a deformation element is provided and has a cross-beam holder for mounting to a cross-beam and a bumper plate that can be positioned next to a bumper of a motor vehicle. The deformation element is characterized in that a friction device for adjusting and fixing the distance of the cross-beam holder from the bumper plate is provided between the bumper plate and the cross-beam holder, a first distance of the bumper plate from the cross-beam holder, starting from a normal position, being greater in a first position than a distance in a second position.

Abstract: A main body (2) has door attaching portions respectively formed on both end sides of a long longitudinal direction thereof and a bending deformation generation portion (3) disposed between the door attaching portions, and the bending deformation generation portion (3) has a groove bottom portion (4), two edge line portions (5a, 5b), two vertical wall portions (6a, 6b), two curved portions (7a, 7b), and two flanges (8a, 8b). There is provided a bead (13) which is formed toward the longitudinal direction of the main body (2) in a part of the groove bottom portion (4) in a manner to project in a shape having a curved surface toward the outside of a cross-sectional shape of the bending deformation generation portion (3) so as to oppose an impact load acting on a door impact beam (1).

Abstract: A bicycle seat includes a deformation space that corresponds to a pressure deformation of a bicycle rider. Wherein, a plurality of filler particles is filled in the deformation space. Therefore, the plurality of filler particles in the deformation space is sliding and rolling under pressure, and the bicycle seat can average support the body of the rider and bring lower friction.

Abstract: The present disclosure provides a highly sensitive piezoelectric sensor in which mixing of electromagnetic noise into signals output from a piezoelectric device is suppressed. The present disclosure provides a piezoelectric sensor including a piezoelectric device which includes a piezoelectric film having an insulating film and a piezoelectric layer stacked on one principal surface of the insulating film and a signal electrode layer stacked on one principal surface of the piezoelectric film, an amplifier electrically connected to the signal electrode layer, and a shield member which is not electrically connected to the signal electrode layer and is composed of a grounded conductor, wherein the piezoelectric film, the signal electrode layer, and the amplifier are accommodated inside the shield member.

Abstract: A shielding device for opening and closing a shielding member by rotation of a winding shaft, the shielding device including a speed controller configured to control an automatic movement speed of the shielding member, wherein the speed controller includes: a housing containing a viscous fluid; and a moving member contained in the housing and configured to move by rotation of the winding shaft, and the speed controller is configured so that resistance the moving member receives from the viscous fluid varies with movement of the moving member, is provided.

Abstract: A resilient bearing to be positioned between a first structure and a second structure including a central connection point for connecting the resilient bearing to the first structure and a plurality of limbs extending outwardly from the central connection point to distal connection points. The resilient bearing may be formed from a single piece of elastic material adapted to dampen forces due to environmental events. A functional property of the elastic material may vary along at least some of the plurality of limbs. The angle between each of at least some of the plurality of limbs and the second structure may be between 20 and 70 degrees.

Abstract: A method and a device for damping relative motion between structural elements (4a, 4b, 5), and in particular for damping oscillations in a stay cable of a building or a civil engineering structure. A damping device is disclosed which provides motion damping by means of frictional engagement (1a, 1b) between friction surfaces composed of low-friction polymeric material (2a, 2b, 3a, 3b). The polymeric material preferably includes a dispersed lubricant. The use of low friction polymers results in a constant damping which is effective over a broad range of displacements and forces.

Abstract: Protective gear such as a helmet includes multiple shell layers connected through energy and impact transformer layers. The energy and impact transformer layers may include conical structures used to dissipate mechanical energy applied to an outer shell layer while allowing an outer shell layer the ability to rotate with respect to a middle or inner shell layer. The conical structures may be three dimensional pyramids, three dimensional parabolic structures, and may be outwardly or inwardly oriented.

Abstract: In one embodiment, a transducer controller is configured to form a drive signal with a first frequency to drive a transducer. The drive signal has a period and a half-period and drives the transducer for a first portion of the half-period. The transducer controller is configured to, for a second portion of the half-period, sense a voltage formed by the transducer, measure portions of the voltage and estimate a phase error between the first frequency and a resonant frequency of the transducer, and to adjust the first frequency to a second frequency that reduces the phase error.

Abstract: A vehicle suspension having a frame attachment portion attached to a saddle, first and second bolster springs mounted to spring mounts on an outboard side of the saddle and mounted on walls of a spring mount on an outboard side of an equalizing beam, and third and fourth bolster springs mounted to walls of a spring mount on an inboard side of the saddle and mounted to spring mounts on an inboard side of the equalizing beam, wherein upwardly extending flanges on the bottom of the first and second bolster sprints are mounted to each other using a common fastener, and wherein upwardly extending flanges on the bottom of the third and fourth bolster springs are mounted to each other with a common fastener.

Abstract: Each of an assembly for air spring, an air spring, and a carriage for vehicle includes: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; and an adjusting member connected to the first supporting member and the second supporting member in a plane crossing the main load direction, the adjusting member having anisotropy in elastic property in the plane crossing the main load direction.

Abstract: Ultrasound catheter devices and methods of the present invention generally provide for ablation and/or disruption of vascular occlusions. An ultrasound transmission member, such as a wire, transmits vibrational energy from an ultrasound transducer to a distal head of the catheter to disrupt vascular occlusions. An absorber member is disposed on or around the ultrasound transmission wire at a location adjacent the sonic connector of the catheter. The absorber member absorbs heat, vibrations, and/or the like from the ultrasound transmission wire at or near the area where the transmission wire is coupled with the sonic connector. The absorptive function typically slows the process of wear and tear on the transmission wire, thus extending the useful life of the ultrasound catheter.

Abstract: A vehicle vibration damper assembly may include a bracket, a canister, and steel shot. The bracket is for mounting to an engine compartment rail in mechanical contact with an engine. The canister is mounted to the bracket and defines a cavity. The steel shot is disposed within the canister in an amount selected to reduce an amplitude of a vibration of the engine during operation. The bracket may be mounted to an engine compartment rail. The bracket may be secured proximate an engine compartment rail such that the canister is mechanically connected to the engine. The amount of the steel shot may be such that energy generated by the engine during operation is dissipated into heat energy or impact energy by the steel shot.

Abstract: A spool brake device for a fishing reel includes an electric spool brake, a rotation detector, and a controller. The rotation detector detects a rotation of the spool. The controller calculates a rotational velocity of the spool based on the rotation of the spool, determines whether the fishing reel is in a casting state based on the rotational velocity, controls the spool brake to brake the spool upon a determination that the fishing reel is in the casting state, and controls the spool brake to not brake the spool upon a determination that the fishing reel is not in the casting state.

Abstract: A cutter holder has a body and a damping assembly. The damping assembly is contained inside the body. The damping assembly has a central damping pole and six auxiliary damping poles. The six auxiliary damping poles are arranged around the central damping pole. The body has a specific weight. The central damping pole has a specific weight larger than the specific weight of the body. Each one of the six auxiliary damping poles has a specific weight larger than the specific weight of the body. The damping assembly is utilized to reduce vibrations caused by machining.