Abstract: A beam of a gantry-type stage structure includes an accommodating space defined by a lower plate, an upper plate, a front plate, a rear plate and two lateral plates. A truss unit is disposed in the accommodating space, and includes lower and upper joint members which are respectively disposed on the lower and upper plates, first and second vertical members which extend uprightly from the lower and upper joint members, respectively, and diagonal members each of which extends to interconnect one lower joint member and an adjacent upper joint member to provide the beam with a great structural strength and a lightweight structure.

Abstract: A linear actuator including the gap compensating unit with the joints and the elastic units to provide the elasticity thereby compensating the offset during the linear motion and maintaining the stability and linearity.

Abstract: The present invention provides a permanent magnet motor, in which three holes, including a middle hole and side holes located on two sides of the middle hole, are disposed in a magnetic island of a rotor, the middle hole and the side holes satisfying specific conditions respectively, thereby achieving an optimal cogging reduction efficacy.

Abstract: An encoder with oil gas prevention structure including a base, a shaft, a bearing, a cover and an encoding device is provided. The base includes a body and a through hole configured on the body. The shaft is disposed within the though hole. The bearing holds the shaft and is disposed within the through hole, and includes an inner ring and an outer ring wherein the inner ring is set against the first section, and the outer ring is set against a circumference of the through hole. The cover holds the shaft and adjacent to the bearing. The encoding device holds the shaft and is disposed on the cover, and includes a code disc rotatably disposed on the shaft wherein the cover is located between the bearing and the code disc. Therefore, the code disc is prevented from being contaminated by the leaking oil gas from the bearing.

Abstract: The present invention provides a heat-transfer mechanism of a motor primary, wherein a heat-transfer member having a metallic body is sandwiched between a motor moving member and a bearing member, such that the heat-transfer member separates the bearing member from the motor moving member to prevent direct contact there-between while the heat-transfer member is used as a heat-conducting medium, and therefore, heat energy on the bearing member and the motor moving member can be gathered in the heat-transfer member, and the effect of effectively dissipating, by means of conduction, the heat energy from the motor moving member and from the bearing member driven by the motor can be achieved.

Abstract: A linear rotary mechanism includes: a pair of elongated guide rails in parallel to each other: a linear motor having a tubular primary side slidably disposed on the guide rails and a shaft-shaped secondary side coaxially extending into an internal hole of the tubular primary side, the shaft-shaped secondary side being axially linearly reciprocally movable along the tubular primary side; and a rotary motor fixedly disposed on the guide rails and connected with one end of the shaft-shaped secondary side. Accordingly, the rotary motor is linearly reciprocally movable along the tubular primary side in synchronism with the shaft-shaped secondary side and the guide rails.

Abstract: A capacitance sensation unit of plane position measurement device for performing measurement with submicron definition is able to measure both two-dimensional position and rotational angle relative to a plane object. The main application of the capacitance sensation unit is exemplified with the position measurement of the mover of a flat motor. The capacitance sensation unit is able to measure the position and rotational angle of the mover relative to the surface of a stator in the form of a flat plate.

Abstract: An encoding device includes a sensing unit having a signal transmitting element and a signal receiving element. The signal transmitting element and the signal receiving element are respectively disposed on different carrier members. Accordingly, when performing the rectification and alignment processes between the signal receiving element and the signal unit, the other components are prevented from hindering the rectification and alignment processes, whereby the rectification and alignment processes can be easily performed.

Abstract: A slide-block-type shaft linear motor platform includes a mover and a stator. An air gap is defined between the mover and the stator. The air gap can communicate with outer side via a fluid inlet space. Accordingly, air convection can take place between the heat source, that is, the winding inside the mover and the outer side. Therefore, the heat generated by the winding can be continuously dissipated to prevent the components from deforming due to the heat. In this case, the precision of operation can be ensured and the performance of the motor will not deteriorate due to the heat.

Abstract: A reaction force counteracting device includes a mounting seat supported on a base seat by means of a vibration isolating assembly, a stage movably mounted on the mounting seat and actuated by a primary actuating member, and a holding table coupled with and movable relative to the stage for holding an object. A reaction force counteracting unit includes a counteraction actuating member coupled with the primary actuating member, and a counteraction moving member actuated by the counteraction actuating member to be moved in an opposite direction relative to an accelerated displacement of the primary actuating member made by a reaction force generated from movement of the stage. A control unit is electronically connected to the primary and counteraction actuating members to control the movement of the counteraction moving member.

Abstract: A winding cooling structure of shaft motor includes a chamber in which multiple annular windings are received. A cooling fluid is filled up in the chamber to possibly contact the surfaces of every part of the respective windings. Therefore, heat generated by the windings can be quickly transferred to the cooling fluid around the windings and dissipated. Accordingly, in operation, the heat dissipation efficiency of the shaft motor can be enhanced to prolong lifetime of the motor and ensure the performance of the motor.

Abstract: A multifunctional load test device includes a drive, a motor to be tested, a load motor and an inverter. The drive is electrically connected to civil power. The motor to be tested is electrically connected to the drive and powered by the drive and controllably drivable by the drive. The load motor is drivable by the motor to be tested to produce counter electromotive force. The inverter is electrically connected to the load motor to rectify the counter electromotive force into power identical to civil power.

Abstract: A linear motor cooling mechanism includes two cooling sections. Each cooling section is composed of multiple bypass heads, which are serially connected with each other. The cooling sections are additionally fixedly disposed on the linear motor. Each cooling section has a main flow way and multiple bypass flow ways in communication with the main flow way. External air is guided through the main flow way and distributed to the bypass flow ways so as to controllably flow toward the position of the mover of the linear motor for achieving an air-cooling heat dissipation effect.

Abstract: A linear motor air-cooling structure includes two cooling sections. Each cooling section has an elongated board-shaped main body. The main body is attached to a lateral side of the stator of the linear motor. An air flow way is formed in the main body. The external air can be uniformly guided through the air flow way and distributed to every part of the linear motor. Accordingly, in operation, a better air-cooling effect is provided for the linear motor.

Abstract: A direct drive threaded rod transmission mechanism is provided. The direct drive threaded rod transmission mechanism is characterized in that a part of the threaded rod is a part of the rotor section of a torque motor. Accordingly, the threaded rod is combined with the torque motor into an integrated body and the torque motor can directly drive the threaded rod. Therefore, the components are simplified and the volume is minified and the assembling and processing cost is lowered.

Abstract: A threaded rod reciprocation outer rotor direct drive mechanism is provided. A threaded rod is coaxially screwed in a threaded bush. The threaded bush directly serves as the rotor of the outer rotor torque motor. Accordingly, the blind spot of the conventional technique is overcome to reduce the number of the components and minify the total volume and simplify the assembling and processing procedure.

Abstract: A threaded rod reciprocation inner rotor direct drive mechanism is provided. The threaded bush of the threaded rod set serves as the rotary shaft of the rotor section of the inner rotor torque motor. A part of the threaded rod set is a part of the inner rotor torque motor. Accordingly, the blind spot of the conventional technique is overcome to reduce the number of the components and minify the total volume and simplify the assembling and processing procedure.

Abstract: A linear motor cooling mechanism includes two cooling sections. Each cooling section is composed of multiple bypass heads, which are serially connected with each other. The cooling sections are additionally fixedly disposed on the linear motor. Each cooling section has a main flow way and multiple bypass flow ways in communication with the main flow way. External air is guided through the main flow way and distributed to the bypass flow ways so as to controllably flow toward the position of the mover of the linear motor for achieving an air-cooling heat dissipation effect.