Abstract: A method for controlling gait-training apparatus using biofeedback is provided. A biosignal-detecting loop is used to detect and analyze the electromyographic signal of a user using the gait-training apparatus. A feedback control loop is used to drive the gait-training apparatus and determine the fatigue level of the user. When the user's muscle starts to become fatigue, the feedback control loop can further adjust the threshold for triggering the gait-training apparatus to retain the training session so that the training intensity can be regulated on-line and the user's muscle can be trained effectively based on the concept of progressive overload.

Abstract: A ball screw device includes a screw engaged into a nut member for forming an endless ball guiding passage and for receiving a number of ball bearing members, two end caps are attached to end portions of the nut member and each include a radially and inwardly extended helical bulge for engaging with the helical groove of the screw, and the nut member includes a peripheral protrusion for engaging with the end cap and for preventing the end cap from being moved radially toward the screw and for preventing the screw from being scrapped by the end cap. The end caps each include a peripheral depression for receiving and engaging with the peripheral protrusion of the nut member.

Abstract: A six-row ball bearing linear guideway is provided with six rows of balls disposed between the slider and the rail. The six rows of balls are symmetrically disposed at two sides of the rail, the balls in the middle and upper rail rolling grooves bear and increase the load capacity in the downward direction. The balls in the lower rail rolling grooves bear a load in the upward direction, and the profile factor of the lower rail rolling grooves is smaller than that of the upper rail rolling grooves, thus the rated static load capacity in the upward direction is improved. The balls in the upper, middle and lower rail rolling grooves all serve to bear the load capacity in the lateral direction, thus the rated static load capacity in the lateral direction is improved. Hence, the rated static load capacity is improved in upward, downward and lateral directions.

Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap having an inner side attached to the slider, the end cap includes an inlet for receiving a lubricating fluid, two chambers formed in two legs, a passage communicating with the chambers, a guiding pathway communicating with the inlet and the passage for separating the passage into two passageways which are communicating with the chambers of the end cap respectively, and a follower is slidably engaged in the guiding pathway and movable toward either the passageways of the end cap for partially blocking and for limiting the flowing of the lubricating fluid to the passageways of the end cap.

Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, the guide rail includes a number of recesses and the slider includes a number of depressions aligned with the recesses of the guide rail for forming a number of ball rolling passages, the slider includes a number of grooves offset from the depressions, two end caps attached onto the slider and each include a number of passageways communicating with the grooves of the slider and the ball rolling passages for forming a number of endless ball guiding raceways between the slider and the guide rail and the end caps and for slidably receiving and engaging with the ball bearing device.

Abstract: A Support arm with brake mechanism, characterized in that: a resilient component generates a resilient force acting in opposition to gravity, such that a supporting rod can move an object steadily; and, in the course of moving the object, a brake is started as needed to brake the supporting rod and fasten the supporting rod to a predetermined position.

Abstract: A support structure for a ball screw includes a base, two pivot seats mounted on the base, a screw disposed between the two pivot seats, at least one guide rail fixed on the base, a first guide block fixed on the base and provided with a first slanting surface, a second guide block fixed on the base and provided with a second slanting surface, a support seat slidably mounted on the guide rails and located below the screw, a nut unit sleeved on the screw and slidably disposed on the guide rails, and a drive assembly fixed at the nut unit. The support structure for a ball screw has a simple structure, a low maintenance cost and a longer service life.

Abstract: A motion guide device includes a movable member attached onto an elongated member for forming a ball guiding passage and for receiving ball bearing members between the elongated member and the movable member, a detecting device includes a magnetic member and an insulated tube engaged into a hole of the movable member, and a warning device is coupled between the movable member and the magnetic member for generating a warning signal when the movable member and the magnetic member are electrically connected together with worn particles and for allowing the user to examine and to repair the motion guide device or the ball screw device when required.

Abstract: An inner-diameter quenching device is provided with a workpiece holding assembly for holding a workpiece to be quenched, a spray cylinder, and a heating coil. The workpiece has a central axis. The spray cylinder is disposed at a first side of the workpiece holding assembly and driven by a lifting assembly to move along the central axis into an inner diameter of the workpiece. The heating coil is disposed at a second side of the workpiece holding assembly and located on and movable along the central axis. The heating coil and the spray cylinder are separated and movable in opposite directions along the same center axis, which can further reduce the size of the quenching device, making it suitable for quenching a small inner-diameter workpiece. Besides, the spray apertures are inclined, so that the cooling liquid can be sprayed out more easily to enhance the quenching effect.

Abstract: A linear motion guide device includes a movable member attached onto an elongated member for forming an endless multiple-turn, helical raceway between the elongated member and the movable member and for receiving ball bearing members, and a detecting device includes a magnetic member and an integrated circuit disposed in the movable member and arranged close to the endless multiple-turn, helical raceway for detecting a moving frequency or a movement of the ball bearing members through the endless multiple-turn, helical raceway of the linear motion guide device and for detecting a wear or failure of the ball bearing members and for generating a warning signal.

Abstract: The invention provides an external circulation type ball screw device comprising screw shaft and nut having first and second screw grooves. A circulation member comprises first leg, second leg and connection portion. The first leg comprises a first end surface having first inner and outer points, and the second leg comprises a second end surface having second inner and outer points; first and second entrances formed on the first and second end surfaces of circulation passage; first and second thickness respectively provided between the first entrance and the first inner and outer points thereof; the second thickness being greater than the first; the third and fourth thickness respectively provided between the second entrance and the second inner and outer points thereof; the fourth thickness being greater than the third. The groove wall of the second screw groove occupied and the occurrence of broken teeth of the nut are reduced.

Abstract: A linear motion system includes an elongated shaft, a movable member mounted at the elongated shaft, a lubricator unit defining therein a grease storage container for storing a lubricating grease, a motor mounted in the grease storage container, a lubricating grease guide connected to the motor, a controller mounted in the grease storage container, and a sensor adapted to provide an actuation signal to the controller upon movement of the movable member, causing the controller to start the motor in moving the lubricating grease guide to expel the storage lubricating grease out of the grease storage container onto the surface of the elongated shaft so as to achieve a self-lubricating effect.

Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, two dust caps oppositely attached to end portions of the slider respectively and each having a channel formed between two legs for slidably engaging with the guide rail, and each having a lip portion directed toward the guide rail for wiping the engaging surface of the guide rail, and the lip portions of the legs of the dust caps each include an inner flange directed toward the slider and each include a number of notches and a number of projections formed in the inner flange of each of the legs and offset from each other for wiping the lubricating fluid into the notches of the legs respectively.

Abstract: A motion guide apparatus includes a cylindrical member having a peripheral protrusion formed between two outer peripheral recesses, a housing engaged onto the cylindrical member and having a peripheral swelling formed between two peripheral depressions, a number of bearing members engaged between the cylindrical member and the housing, and two actuating ring members each having a number of orifices for engaging with the bearing members and each having an inner side portion directed toward the peripheral protrusion and the peripheral swelling, and each having an operating device extended into the gap that is formed between the peripheral protrusion and the peripheral swelling for wiping the lubricating oil.

Abstract: An angle-adjustable thread processing machine includes a base, a rocker arm, a rocker-arm toothed wheel, an idle wheel, a driven toothed wheel, and a processing unit. The base includes a power source with a drive shaft. The rocker arm is fixed to the drive shaft which rotates about a drive axis. The rocker-arm toothed wheel is pivotally sleeved on the drive shaft. The idle wheel is pivotally disposed on the rocker arm and engaged with the rocker-arm toothed wheel. The driven toothed wheel is pivotally disposed on the rocker arm to engage with the idle wheel and rotates around a driven axis which is located a first distance D1 from the drive axis. The processing unit includes a machining spindle fixed to the driven toothed wheel, and a machining head which rotates around a machining-head axis which is located a second distance D2 from the driven axis, and D1=D2.

Abstract: A linear actuator includes a slide, a first half return member, a second half return member and a slide block. The first and second half return members are hollow square frames and sleeved onto the rail. A circulation path can be formed when the first and second half return members and the slide block are assembled together, the second half return member is directly disposed in the first radial gap of the first half return member, and the slide block is directly disposed in the second radial gap of the second half return member. Furthermore, there is no level difference in the first and second return grooves of the two half return members, which will prevent noise caused during movement of the rolling elements, reduce impact of the rolling elements against the circulation path, and therefore extending the life of the linear actuator.

Abstract: A hollow drive gear reduction mechanism includes a hollow wave generator, an annular flexible bearing, a flexible wheel, and a rigid wheel. The annular flexible bearing is disposed in and driven to rotate by an elliptical recess of the wave generator. The flexible wheel includes an inner toothed section and is inserted in the annular flexible bearing and has an outer surface abutted against an inner surface of the inner ring, and the flexible wheel is driven to rotate by the annular flexible bearing. The rigid wheel includes a plurality of outer teeth which are different in number from the inner teeth of the flexible wheel, the rigid wheel is inserted in the flexible wheel, and a part of the outer teeth are meshed with the inner teeth. The respective components are hollow structures, and a lateral aperture is formed on the hollow wave generator.

Abstract: A support arm with a multiple degree of freedom locking device includes a support arm unit, an outer housing unit, a feed screw, a conical push block, and two conical baffles. When the feed screw rotates in a first direction, the conical push block and the conical baffle are driven are rotated to make the outer annular baffle slanting surface press against the inner surface of the pivot space and the first and second pivot portions, so that the lateral housing is unable to pivot with respect to the upper and lower housing, and the first and second pivot portions are positioned between the two ears in a non-rotatable manner, when the feed screw rotates reversely, the lateral housing will be able to pivot with respect to the upper and lower housing, and the first and second pivot portions are able to pivot with respect to the two ears.

Abstract: A feeding device includes a fixing base. A motor is fixed to the fixing base. The motor has an output axle. A transmission axle is fixedly connected to the output axle. The feeding device further includes a feeding block having a side fixedly connected to the transmission axle. The feeding block has a feeding notch. The feeding notch is formed around the transmission axle circumferentially. Hence, once a slender material enters the rotational space of the feeding block, the motor drives the feeding block to rotate, whereas the slender material is pressed by the feeding notch of the feeding block and sent out as a result of the continuous rotation of the feeding block. Hence, the feeding device not only enables continuous material conveyance but also allows the slender material to be conveyed smoothly even when the slender material is slightly bent or deformed.

Abstract: A ball spline device includes a shaft engaged into a nut member and having a number of longitudinal channels and recesses aligned with each other for engaging with ball bearing members, the nut member includes a number of grooves, and two deflecting devices are engaged onto the shaft and the nut member and each include a number of curved guiding pathways each having an inlet portion communicating with the recess of the nut member for guiding the ball bearing members into and out of the curved guiding pathways of the deflecting devices, and an outlet portion communicating with the groove of the nut member for guiding the ball bearing members into and out of the grooves of the nut member.