Abstract: A driving device for an extendible and retractable actuator comprises a first rod, a second rod, a third rod and a motor. The first rod is screwed with the second rod. The second rod is screwed with the third rod. By such arrangements, the motor can drive the first and the second rods to move while driving the third rod to rotate. After the third rod is engaged with the second rod, the first rod can be also driven to move.

Abstract: A torque motor type wind generator comprises: a blade rotor, an engine room, a torque motor, a voltage regulator, a voltage transformer, a power storage system, and a control system. The blade rotor is connected with a connecting shaft, the engine room is a housing with a receiving space, the torque motor has a rotator shaft which is driven to rotate by electromagnetic-force, the voltage regulator includes a regulating circuit and a switch circuit, the power storage system serves to store electric energy, and the control system is employed to detect the status of power storage for facilitating the control of the electric energy input. The assembly of the abovementioned structures converts wind energy into mechanical energy or electrical energy.

Abstract: A ball screw with a changeable oil-storage unit comprises: a screw shaft, a nut mounted on the screw shaft, a plurality of rolling elements, the nut defined with oil filler hole; an oil-storage unit having an oil feeding hole and an oil-storage space; a connector having a through hole and two connecting portions for mating with the oil filler hole of the nut and the oil feeding hole of the oil-storage space, respectively; one of the connecting portions has a tongue and groove arrangement, so that the through hole of the connector is connected to the oil filler hole of the nut and the oil feeding hole of the oil-storage space, forming an oil route that is used to provide lubricating oil for the ball screw.

Abstract: A torque motor type elevator comprises a torque motor, a ball screw, a sliding nut and an elevator car. The torque motor serves to drive the load screw of the ball screw directly, so the elevator car fixed to the load nut is moved up and down. The ball screw of the present invention is provided for reducing the loss of energy of the elevator driving system, and the sliding nut is disposed on the ball screw to improve its safety. The torque motor can be added with a resolver or an encoder to control the position precisely. Such arrangements can prevent the problem of energy consumption and can simplify the structure.

Abstract: A ball screw with a changeable oil-storage unit comprises: a screw shaft, a nut mounted on the screw shaft, a plurality of rolling elements, the nut defined with oil filler hole; an oil-storage unit having an oil feeding hole and an oil-storage space; a connector having a through hole and two connecting portions for mating with the oil filler hole of the nut and the oil feeding hole of the oil-storage space, respectively; one of the connecting portions has a tongue and groove arrangement, so that the through hole of the connector is connected to the oil filler hole of the nut and the oil feeding hole of the oil-storage space, forming an oil route that is used to provide lubricating oil for the ball screw.

Abstract: A linear guideway with a changeable oil-storage unit comprises: a rail, a sliding block; an end cap having an oil-filler hole fixed to either end of the sliding block, an oil-storage unit having an oil storage space, a connecting portion, and an oil feeding hole; a joint unit defined with a through hole, and two connecting portions connected to the oil filler hole and the connecting portion of the oil-storage unit, respectively. One of the connecting portions has a plug-in arrangement for providing quick connection to the oil-storage unit, the through hole, the oil filler hole and the oil feeding hole are connected to one other, forming an oil route for providing lubrication for the linear guideway.

Abstract: A linear guideway with damping is provided mainly comprising a guide rail and a slider module, said slider module comprising a slider body, a plurality of roller balls, caps for roller balls to circulate and a damping block. The slider module is provided with said damping block inside to damp said linear guideway without adding extra components to reduce vibration. Furthermore, a Damping adjustment device is provided to adjust a damping effect formed by contacting said damping block with said slider body and said guide rail in order to provide optimal vibration absorption.

Abstract: The present invention relates to a cable used for electric machinery or mechanical structures, and more particularly to a cable used to transmit the power and voltage signal or transfer the air and oil. The cable has good flexibility and does not need a cable guiding.

Abstract: The present invention relates to a flexible, non guided cable for use with electric machinery or mechanical structures, and more particularly for a cable used to transmit the power and voltage signal to transfer air and oil.

Abstract: The present invention provides an electrical discharge machine (EDM) with double-axis double-speed linear motor mechanism for fast machining operation. In this EDM the tool fixture assembly is driven by a linear motor, whiles the work piece platform assembly is driven by another linear motor in the opposite direction. Applying no contact direct drive, such as linear motors, eliminates wear problem in ballscrews in conventional embodiments and enhances availability of the machine. Opposite and double motors drive configuration not only increases relative speed between the tool electrode and the work piece, but also stabilize the speedy jump operation by canceling reaction force of tool electrode movement.

Abstract: The present invention discloses a linear guideway with damping means mainly comprising a guide rail and a slider module, said slider module comprising a slider body, a plurality of roller balls, caps for roller balls to circulate and a damping block. The major characteristics of the present invention is to provide said slider module having said damping block inside to damp said linear guide without adding extra components to reduce vibration. Furthermore, the present invention provides a damping adjustment device to adjust a damping effect formed by contacting said damping block with said slider body and said guide rail to provide best vibration absorption.

Abstract: The high-speed linear motor disclosed herein comprises a stationary part and a moving part. The stationary part is composed of conjoined upper and lower primary structures. Each primary structure consists of at least two field magnet modules. The moving secondary part then lies between the two primary structures by a non-wearing bearing so that it can move with high efficiency and no friction loss. A position sensor is provided for precisely positioning a work piece and there is no worry about interruption of feed back signal because there is no wire connection at the moving part.

Abstract: The present invention relates to a linear motor mechanism that has two axles, a tool-axle and a work-piece-axle, and the two axles parallel to each other. When one of said two axes moves, the other axle moves in the against direction. The tools set up on the tool-axle and the work pieces set up on the work-piece-axle, so between the tool and work piece of the present invention can has double relative velocity and acceleration to the prior art. Since between the tool and work piece the relative velocity and acceleration is good, the mechanism can reduce the working time. And, the mechanism will improve the mechanical characteristic of mechanism.

Abstract: The high-speed linear motor disclosed herein comprises a stationary part and a moving part. The stationary part is composed of conjoined upper and lower primary structures. Each primary structure consists of at least two field magnet modules. The moving secondary part then lies between the two primary structures by a non-wearing bearing so that it can move with high efficiency and no friction loss. A position sensor is provided for precisely positioning a work piece and there is no worry about interruption of feed back signal because there is no wire connection at the moving part.

Abstract: A ball screw having a cooling medium circulating channel inside the nut is to set two side covers, which set several inside trough channels, at two sides of the nut respectively and connecting trough channels inside the side covers with cooling channels inside the nut to form a cooling medium circulating channel such that a cooling medium is supplied from the inlet to the circulating channel to cool the nut and drained outward through the outlet after absorbing heat.