A bi-directional damping system generates damping forces in two opposing directions. A shaft has a plurality of bi-directional damping modules fixedly coupled thereto. Each module includes a fluid-filled variable-volume first chamber including at least one port through which fluid can flow based on changes in volume of the first chamber, and a fluid-filled variable-volume second chamber including at least one port through which fluid can flow based on changes in volume of the second chamber. The first chamber and second chamber are fluidically isolated from one another. A fluid-filled spacer chamber is coupled to adjacent ones of the modules. The spacer chamber includes at least one venting port through which fluid can flow based on pressure in the spacer chamber.

A balancer abnormality detection system includes: a robot; a motor configured to operate the robot; a balancer provided in the robot and configured to generate assist torque which assists power of the motor with force generated by elastic bodies; and a controller configured to detect abnormality of the balancer by measuring a current value of the motor operated to keep a posture of the robot during standby of the robot and comparing the current value with a current command value of the motor necessary for keeping the posture of the robot.

A unidirectional damping system includes a shaft and unidirectional damping modules. Each module is fixedly coupled to the shaft. Each module includes a fluid-filled variable-volume chamber and spring(s). The chamber has at least one port through which fluid flows based on changes in volume of the chamber wherein, when the shaft is adapted to have a unidirectional force applied thereto, the chamber decreases in volume. The spring(s) is coupled to the chamber for increasing volume of the chamber when the unidirectional force is not applied to the shaft. A fluid-filled spacer chamber is coupled between adjacent modules and is uncoupled from the shaft. The spacer chamber includes at least one venting port through which fluid flows based on pressure in the spacer chamber.

The invention relates to a spring-damper element (2) for mounting a punching press (1), with a hydraulic damper unit (3) with a first fluid chamber (4) and a second fluid chamber (5), wherein, in the intended operation, a hydraulic fluid is displaced from the first fluid chamber (4) via a throttle point (6) into the second fluid chamber (5) when the spring-damper element (2) is compressed. The damper unit further comprises an overload valve (7) arranged between the first fluid chamber (4) and the second fluid chamber (5), which overload valve opens when a specific fluid pressure is reached in the first fluid chamber (4) or when a specific pressure difference is reached between the first fluid chamber (4) and the second fluid chamber (5) and releases a bypass (8) via which hydraulic fluid then flows from the first fluid chamber (4) into the second fluid chamber (5) bypassing the throttle point (6). Thereby, the spring-damper element (2) is designed in such a way that the fluid pressure or the pressure difference, respectively, at which the overload valve (7) opens can be adjusted when the spring-damper element (2) is installed as intended. With such spring-damper elements according to the invention, it becomes possible to create a mounting arrangement for a punching press, the damping characteristics of which can be adjusted without significant effort, such that a variable operation of the press in wide ranges becomes possible while keeping the ground loading to a minimum in each case.

A machine learning apparatus determines a control parameter of an active vibration isolation apparatus on which an industrial machine is mounted. The industrial machine includes a movable part, a drive source that drives the movable part, and a drive source control section that controls the drive source to position the movable part at a command position. The machine learning apparatus includes: an acquiring section that acquires, as teacher data, a positional deviation, which is a difference between the command position and an actual position of the movable part; a storage section that stores a learning model that outputs the control parameter corresponding to a state quantity concerning the industrial machine; and a learning section that updates the learning model using the teacher data.

The present invention related to a portable 3D printing system with advanced thermal management system. The design aims at solving the problem of 3D printing system portability by using a casing member along with shock absorbers or suspension arrangement. The 3D printing system may include a thermal management system which makes it operable in harsh environments. The thermal management system may include a fluid cooling system and heating system which enables the 3D printing system to operate in extreme hot and cold temperatures. The system is safer and smarter using a smart user interface and camera installed inside the 3D printing system.

A vibration isolator with a pneumatic spring that is effective only in vertical direction, the pneumatic spring including a working space in which a vertically effective actuator is disposed.

The invention provides a vibration isolation system (IS), comprising a piston (402) to carry a payload, a connecting member (410), a spring (404) and a flexible member (408). The spring is arranged to support the piston along a direction with a positive stiffness. The flexible member is arranged to apply a force to the piston along the direction via the connecting member with a negative stiffness.

A pre-compression type emergency air spring assembly includes an upper cover plate, an air bag, an upper end plate, and a lower end plate. A periphery of the upper end plate is connected with a periphery of the lower end plate through the air bag. A top part of the upper end plate is provided with transverse pre-compression cavities and transverse pre-compression plates arranged at transverse openings of the transverse pre-compression cavities. The transverse pre-compression cavities are internally provided with laminated spring elastomers through the transverse pre-compression plates in a pressing mode. Multiple steel springs are arranged between the upper cover plate and the upper end plate in a pressing mode along a circumferential direction of the laminated spring elastomers. The upper cover plate is arranged on a periphery of the transverse pre-compression cavities in a sleeving mode.

A spring device for spring-mounting a laundry drum of a washing machine has at least one spring means and coupling means for coupling the spring means to the spring device. The spring means has a spring constant or spring properties which are temperature-dependent and can be varied by a temperature effect on the spring means. As an alternative or in addition, the coupling means are designed in a temperature-dependent manner in such a way that they vary their coupling effect between the spring means and the spring device by a temperature effect. Heating means are provided for the spring means and/or for the coupling means in order to warm up the said spring means and/or coupling means and to change their spring properties or their coupling effect. Therefore, the spring-mounting arrangement of the laundry drum can be thermally, and therefore quickly and simply, varied.