125results about How to "No backlash" patented technology

The double pendulum milling head driven by the AC permanent syntactic rotor torque motor having a cross hollow shaft, whose both ends fixed on the rotor of the horizontal torque motor at both ends of the A shaft. Acting as an integral, they are fixed on the rotor of the vertical torque motor of C shaft. In this way, vertical motor driving the milling head to rotate around C shaft, and A shaft horizontal motor driving the pendulum of milling head around A shaft. It complete the complex machining of the working piece through compound motion in two directions matching the high speed revolution of the shaft itself. It is compact in structure, simple of drive, good in rigidity, smaller in mechanical components quantity, higher reaction sensitivity, free from wear and reverse gap, being able to machining for a five-face body with high precision.

The invention relates to a six-freedom-degree industrial robot with ball screw pair transmission. Waist whole circle rotating is achieved through a waist swing mechanism, a shoulder swing mechanism and an elbow swing mechanism form a two-freedom-degree parallel mechanism to achieve two-dimensional horizontal moving, and ball screws are driven by motors arranged on a swing platform respectively. Three mutual-orthometric rotating shafts connected through a front arm rotating mechanism, a wrist swing mechanism and a tool clamping base swing mechanism are driven independently by three motors respectively, and three-freedom-degree gesture adjusting of an executing tail end tool is achieved. The advantage of the large working space of a serial mechanism is kept, ball screw transmission is used, the rigidness of the mechanism is guaranteed, the positions of the driving motors are lowered, good dynamic characteristics are obtained, bearing capacity is large, high-speed or superspeed operation can be easily achieved, and the six-freedom-degree industrial robot has the advantages that side gaps do not exist, rigidness is high, micro-motion feeding can be conveniently achieved, accumulated errors are small, motion accuracy is high, positive and athwart kinematics solving is convenient, and control is convenient.

The invention discloses an electric operator for a general-purpose mechanical automatic transmission clutch, which comprises a servo motor, a shell, a coupling, a connector, a front end flange, a back end flange, a bearing, a hinge pin, a ball screw, a pressure sensor, a spacing sensor and a displacement sensor, wherein the front end flange fixes the shell on the clutch bracket; the motor is fixed on the shell; the output shaft of the motor is connected with the screw stem of the ball screw through the coupling; the screw stem drives a screw stem shaft sleeve through balls to drive a push rod to move; and the other end of the push rod is connected with the pressure sensor, thereby finally acting on the driving lever of the clutch, so that the driving lever drives the clutch to move. The invention has the advantages of simple structure, high transmission efficiency, accurate control and the like, is suitable for clutches with different rigidities and movement strokes, and can monitor the movement state of the clutch from different angles. The invention is mainly used in electric operators for clutches in experimental study.

The invention discloses a method for automatically eliminating limited angle gear backlash, and aims to provide a compact limited angle gear backlash eliminating mechanism which is simple and compact in structure and capable of realizing gear transmission without backlash, improving gear transmission precision, reducing cost and improving assembling capacity. The technical scheme for implementing the method includes that one of a driving gear and a driven gear which are engaged with each other is divided into a main sector gear and an auxiliary sector gear, a fixed main gear working portion and the loaded auxiliary gear are sectored, a bottom arc of a small end sector of the loaded auxiliary gear fits with a cylindrical surface of a gear rotating shaft cylinder, inclined hole grooves (7) are formed in sectors of the fixed main gear and the loaded auxiliary gear, and gear tension springs (4) keeping a tension state are mounted in the inclined hole grooves, the fixed main gear and the loaded auxiliary gear are connected together by loading the sector of the auxiliary gear through the gear tension springs, and the fixed main gear and the loaded auxiliary gear are mutually staggered to form a certain circumference angle and engaged with the driven gear in opposite directions.

A steering device for use in solar tracking equipment includes: a fixed base (10); a rotary base (20) correspondingly connected to the fixed base (10) and provided with a worm gear (22); and a driving module (30) disposed in the fixed base (10) and including a worm unit (33) and an adjustment mechanism (34), the worm unit (33) includes a cylindrical body (331) and a worm (332) supported in the cylindrical body (331), and the cylindrical body (331) is pivoted in the fixed base (10), the adjustment mechanism (34) is disposed corresponding to the cylindrical body (331) for adjusting the swinging motion of the cylindrical body (331), thereby enabling the worm (332) and the worm gear (22) to be mutually engaged. Accordingly, the backlash between the worm and the worm gear is able to be adjusted thereby enhancing the rotation precision.

The invention relates to an improved robotic arm apparatus and associated method which improves a robot configured in a “delta” arrangement. The robotic arm apparatus is arranged with three substantially identical movable arm assemblies connected together with three linear actuators in a triangular configuration such that each end of each linear actuator has at least one translational degree of freedom.

The invention relates to a linear guide rail pair structure with the high dust prevention performance. The linear guide rail pair structure with the high dust prevention performance comprises a guide rail, a sliding block, rolling bodies and rolling body retainers, wherein the sliding block is installed on the guide rail and can slide on the guide rail, and the rolling bodies and the rolling body retainers are arranged between the guide rail and the sliding block. The linear guide rail pair structure with the high dust prevention performance is characterized in that the front side and the rear side of the sliding block in the moving direction are respectively provided with an end face double-lip scrap scraping plate made of elastic wear-resistant materials. Each end face double-lip scrap scraping plate is provided with a double-lip scrap scraping hole corresponding to the guide rail in shape, the orifice of each double-lip scrap scraping hole is provided with two lips, and each lip is of an inclined tongue structure with the tongue tip outwards. A linear guide rail pair has the high dust prevention structure and advantages. The two novel metal retainers are installed for the guide rail and the rolling bodies of the sliding block and have the advantages of being high in rigidity, free of backlashes, high in reversible speed and the like.

A burner is arranged axially of a burner throat on a furnace wall and includes a nozzle body housed in a wind box and with a secondary air adjuster on a leading end of the nozzle body. The adjuster includes an end plate for defining together with a near-furnace side surface of the wind box a cylindrical space opened in an outer circumference thereof, a slide damper axially slidable for surrounding the cylindrical space, air vanes arranged at predetermined intervals and circumferentially of the cylindrical space for swirling a secondary air and drive means and for slide movement of the slide damper.

The invention belongs to the field of nontraditional machining, and discloses a precise numerical control indexing rotating shaft for electric discharge machining, which comprises a main shaft body, a permanent magnet alternating current servo torque motor which is connected with the main shaft body, and a grating encoder which is arranged at the upper end of the main shaft body; a brake apparatus is arranged on the main shaft body for controlling the main shaft body to stop rotating; the bottom end of the main shaft body is provided with a power device for supplying power for an electrode which is arranged at the center of the bottom end of the main shaft body; and a main shaft liquid cooing device is arranged on the main shaft body, and the liquid is filled from the outer part of the main shaft body for heat exchanging and flushing of the main shaft body. The precise numerical control indexing rotating shaft and a high-speed rotating shaft are designed into a whole, accessories are not needed to change for the precise indexing machining and the high-speed rotating machining, accordingly, the machining efficiency is improved, and a tool electrode and a workpiece can be automatically changed; and in addition, the precise numerical control indexing rotating shaft adopts an integral structural design and a shortened transmission chain, and has no backlash and higher indexing accuracy and servo response performance.

A Steering Mechanism for a Push and Pull Vehicle is to provide a solid turning, fast reaction steering feeling as a regular bicycle steering function, by handlebar turning left or right while still be able to use pulling or pushing action to power a vehicle forward. It contains handlebar at top of swing pole, a turning sleeve on a swing arm to hold swing pole, a frame supported U-joint bearing holds a U-joint which steer vehicle direction, and said swing arm contains a pivot support on vehicle frame and output to drive vehicle forward. So said handlebar is able to swing back and forth on swing arm pivot support to drive vehicle forward and turn left and right on said turning sleeve for steering directions.

The invention discloses a long-stroke single degree of freedom air-bearing magnetic-drive nano-positioning platform, which comprises a solenoid actuator, an air-bearing guide mechanism, a position sensor module and an eddy current retarder module. The solenoid actuator body consists of two parts of a stator and a rotor; the rotor part is provided with a permanent magnet array; the stator three-phase winding adopts a coreless structure. Degree of freedom in five directions of a positioning platform is constrained by the air-bearing guide mechanism through three air bearings in vertical direction and two lateral air bearings in horizontal direction, so as to enable the positioning platform to perform motion only along one direction. The position sensor module is realized by virtue of a high-precision raster rule. The eddy current retarder module comprises two eddy current retarders which are respectively arranged at the front end and the rear end of the solenoid actuator. The nano-positioning platform disclosed by the invention has the advantages of simple structure, direct drive, zero friction, hysteresis-free, haul back interval-free and the like, and nano-grade positioning resolution is reached in motion strokes from tens of millimeters to hundreds of millimeters.

The invention relates to a fiber arranging mechanism which is applied to an automatic optical fiber ring coiling machine, and the fiber arranging mechanism is composed of a fiber arranging component (1), a driving component (2) and a platform bracket (3). The lower installing face (302) of the platform bracket (3) is fixedly arranged on a precision platform (4). The upper installing face (301) of the platform bracket (3) is fixed with the slipway base (13) of the fiber arranging component (1). The fiber arranging component (1) is composed of an outer cover (11), a working table (12), the slipway base (13) and a sliding component (15). The fiber arranging mechanism of the invention is applied to the realization of fiber arranging function on various automatic optical fiber ring coiling machines, simultaneously, the invention also can be used in the machines such as optical fiber repeat coiling typed machines and optical fiber selecting machines. A screw lever (170) is driven to rotate by a motor (201), and the working table (12) can be made smoothly to slide on an A guiding rail (155) and a B guiding rail (156). Slight optical fibers can be accurately arranged on a preconcerted light fiber ring through adopting a frame with high stiffness, a prestressed assembling structure and an excellent driving and controlling characteristic in the fiber arranging mechanism.

The invention relates to an anti-backlash transmission comprising trochoid gears and roll pins with conical teeth. The transmission has two transmission modes, and a pin gear is respectively externally meshed and internally meshed with the corresponding trochoid gears to implement the two transmission modes. The pin gear is provided with a plurality of conical roll pins, and tooth gaps are eliminated by axially pushing the pin gear along the end, which is provided with a small diameter, in a transmission procedure; and the trochoid gears are conical trochoid gears, and the trochoid gears and the pins are meshed to realize zero-backlash power transmission. The pin gear or the trochoid gears is driven by a servo motor to continuously relate, and accordingly a deceleration function or an acceleration function is realized. The anti-backlash transmission is simple in structure, requirements on high-speed and high-precision transmission are met, the tooth gaps generated by abrasion during transmission can be eliminated, the meshing accuracy is guaranteed, and the utilization rate of the roll pins is increased.

Intended is to provide a strainer having a switch mechanism, which is hardly rattled by a wear, which can be stably operated by a weak force, which does not load a snare assembly and which can maintain an excellent operation feel, and a snare assembly holding structure which has a reliable clamping force so that it can prevent the looseness of the snare assembly end portion. An operation lever is hinged on its base end side to a base body. A link is turnably connected on its one end side to the lower side portion of a snare assembly holding member, and is likewise turnably connected on its other end side to a midway position of the operation lever. When the operation lever turns upward, the snare assembly holding member is pulled upward through the link. When the operation lever turns downward, the snare assembly holding member is pushed downward.

The present invention relates to a gapless speed-changing mechanism, belonging to the field of mechanical transmission. Its structure is characterized by that on its support two rolling screw rods with different leads and guideways are axially parallelly mounted, on said two rolling screw rods respectively are mounted puller nuts, the driving block mounted on the guideway is connected with puller nut, and the axises of two rolling screw rods are coaxial or not coaxial.

The invention discloses a jib-type crane pulley device which comprises a pulley and a pulley shaft. The pulley comprises a rim with a U-shaped rope groove, a hub, a spoke and a swinging mechanism, wherein the spoke is connected with the rim and the hub, the swinging mechanism comprises an inner ball, a steel ring and a positioning sleeve, the inner ball is sleeved in an inner ring of the steel ring, the ball center of the inner ball is superposed on the circle center of the steel ring which is fixedly connected with the hub by the positioning sleeve, and the inner ball is provided with a pulley shaft hole matched with the pulley shaft which penetrates through the pulley shaft hole of the inner ball of the swinging mechanism and is in rotating connection with the inner ball. When the jib-type crane pulley device is in use, the pulley can wholly swing along with the inclination direction of a hoisted object to constantly keep a force position kept in the center of the pulley so that the rope groove can not be deformed due to unbalanced force, a steel wire is prevented from jumping to cause danger, the deformation of the pulley is effectively lessened in the use process, and the pulley has prolonged service life and is safe to hoist.

Provided is an electric power steering system and a vehicle. The electric power steering system comprises a steering gear housing, a worm gear, and a worm. The steering gear housing is internally provided with a worm gear installation cavity and a worm installation cavity. The worm gear is installed in the worm gear installation cavity. The worm is installed in the worm installation cavity. The worm gear and the worm are meshed with each other. One axial end of the worm is provided with a first center distance adjusting mechanism, and the other axial end is provided with a second center distance adjusting mechanism. The first center distance adjusting mechanism and the second center distance adjusting mechanism can make the worm swing deviating the axis of the worm, so as to realize adjustment of the mesh center distance of the worm gear and the worm. Using the electric power steering system can realize mesh center distance of the worm gear and the worm, so that the mesh center distance of the worm gear and the worm is consistent with the center distance of the worm gear installation cavity and the worm installation cavity, and mesh interspace is not generated, so as to prevent to generate noise in a steering process.