Abstract: A boring bar for a non-rotating boring tool includes an elongated main part configured for attachment to a support structure of a metal cutting machine. A front part is arranged to carry a tool part provided with a cutting element and at least one damping module, which is arranged between a front end of the main part and a rear end of the front part and which is provided with an electrically controlled vibration actuator configured to generate vibratory forces for active vibration damping of the boring bar. The front part is connected to the main part via the at least one damping module, wherein the main part, the front part and the at least one damping module together form an elongated body, and wherein the at least one damping module constitutes a length section of the elongated body.

Abstract: A boring bar for a non-rotating boring tool includes an elongated body configured for attachment to a support structure of a metal cutting machine and arranged to carry a tool part provided with a cutting element. At least two electrically controlled vibration actuators are arranged for active vibration damping of the boring bar. Each actuator includes a moveably arranged damping mass configured to generate vibratory forces in parallel with a working axis of the actuator that is perpendicular to a center axis of the damping mass. Each actuator is a single-axis actuator having one single working axis, wherein the actuators are arranged with their working axes angularly offset from each other. The actuators are arranged in a longitudinal series in the elongated body with the center axis of the damping mass of each actuator coinciding with a longitudinal axis of the elongated body.

Abstract: A non-rotating boring tool for internal turning includes a boring bar having an elongated body, a cutting element with a rake side, a relief surface and a cutting edge, and an electrically controlled vibration actuator for active vibration damping of the boring bar. Moreover, when seen in a cross-sectional plane that is perpendicular to a longitudinal axis of the elongated body and intersecting the cutting edge in a radially outermost point, straight and imaginary first and second reference lines intersect the cutting edge in the radially outermost point with the first reference line extending at an angle of 6° to the relief surface on the outside of the cutting element, and the second reference line extending between the rake side and the relief surface at an angle of 10-40° to the first reference line. The actuator is arranged with its working axis extending in parallel with the second reference line.

Abstract: A movable element for a damping system includes an absorbent mass arranged to be positioned in a housing. At least two adapted portions are arranged on a periphery of the absorbent mass. A plurality of elastic elements are arranged in the adapted portions and are designed to bear against an internal wall of the housing. The elastic elements have optimum damping properties in different variation ranges of at least one parameter. The present invention further relates to a damping system.

Abstract: A movable axial element for a damping system includes a rectilinear absorbent mass positionable in the housing and having at least one annular groove arranged on a periphery of the absorbent mass and in which at least one elastic element is arranged to bear against an internal wall of the housing. The at least one groove includes a base formed by a shoulder of the absorbent mass. An edge formed by a structure bearing an annular lip is mounted in a sliding manner on at least one part of the shoulder along at least one axis of the movable element to form an adjusting device integrated into the movable element to enable the control of a prestressing exerted by the annular lip on the elastic element mounted on the periphery of the absorbent mass, the prestressing being generated without rotation of the annular lip relative to elastic element.

Abstract: An assembly for tightening and securing includes a first male part and a second female part fitted together, which have complementary forms. The fitting includes at least one contact surface of the first part with the second part. The assembly also includes at least one annular means mounted on the periphery of one of the two parts. The annular means is connected in a translational manner to the part on which the annular means is mounted when the annular means abuts with the part on which the means is mounted, and arranged to interact with a peripheral surface of the complementary part during a rotation of the annular means in relation to the complementary part.

Abstract: A movable element for a damping system includes an absorbent mass arranged to be positioned in a housing. At least two damping assemblies are positioned respectively against the surface of the absorbent mass and bearing against the internal wall of the housing at different parts of the absorbent mass. The movable element is arranged to function with a phase shift and/or shift of displacement amplitude between the oscillations of each part of the absorbent mass in each of the damping assemblies during the operation of the movable element, by generating damping effects and/or having different rigidity for each of the damping assemblies. The present disclosure further relates to damping system and method for implementing a movable element.

Abstract: A movable element for a damping system includes an absorbent mass arranged to be positioned in a housing. At least two adapted portions are arranged on a periphery of the absorbent mass. A plurality of elastic elements are arranged in the adapted portions and are designed to bear against an internal wall of the housing. The elastic elements have optimum damping properties in different variation ranges of at least one parameter. The present invention further relates to a damping system.

Abstract: A movable axial element for a damping system includes a rectilinear absorbent mass positionable in the housing and having at least one annular groove arranged on a periphery of the absorbent mass and in which at least one elastic element is arranged to bear against an internal wall of the housing. The at least one groove includes a base formed by a shoulder of the absorbent mass. An edge formed by a structure bearing an annular lip is mounted in a sliding manner on at least one part of the shoulder along at least one axis of the movable element to form an adjusting device integrated into the movable element to enable the control of a prestressing exerted by the annular lip on the elastic element mounted on the periphery of the absorbent mass, the prestressing being generated without rotation of the annular lip relative to elastic element.

Abstract: An assembly for tightening and securing includes a first male part and a second female part fitted together, which have complementary forms. The fitting includes at least one contact surface of the first part with the second part. The assembly also includes at least one annular means mounted on the periphery of one of the two parts. The annular means is connected in a translational manner to the part on which the annular means is mounted when the annular means abuts with the part on which the means is mounted, and arranged to interact with a peripheral surface of the complementary part during a rotation of the annular means in relation to the complementary part.