59results about How to "Improve transmission stiffness" patented technology

The invention discloses a short tube flexible gear harmonic reducer of a rigid wheel tooth dip angle and a transmission rigidity testing device thereof, and relates to the technical field of harmonic reducers. According to the invention, the deflection of the flexible wheel gear teeth is caused by the reduction of the axial size of the short tube flexible gear harmonic reducer, so as to realize the reduction of the surface area between the rigid wheel gear teeth and the flexible wheel gear teeth, and to realize the lowering of the transmission rigidity; the problem of complicated operating process of the existing harmonic drive rigidity experiment testing device is solved; and the length diameter ratio of a soft wheel is 1/4 to 3/5 of a short tube wheel, the inner wheel of the rigid wheel with a dip angle is the wheel teeth with the dip angle alpha along the rigid wheel axial direction, and the deflection direction and the field angle direction of the soft wheel on a long shaft are coincident. The transmission rigidity testing device of the short tube flexible gear harmonic reducer implements current control namely torque control through a computer and a servo driver, and the harmonic drive output end realizes continuous loading unloading; and the harmonic drive rigidity of the short tube soft wheel is obtained, and the transmission rigidity is serially, rapidly accurately obtained.

The invention relates to a multifunctional rolling mill for producing thin metal straps and ultra-thin metal straps and belongs to the field of metal rolling devices. The multifunctional rolling mill comprises a pressing-down device, a memorial archway, a base, a roll system, a roll gap adjusting device, a main transmission motor and a tension motor. The memorial archway is fixed on the base through a bolt, the pressing-down device is fixed on the memorial archway through a pressing-down lead screw, the roll system is placed in the memorial archway, a bearing seat limits horizontal movement of the roll system, the roll system can vertically slide in a memorial archway window, the roll gap adjusting device uplifts a spring through the pressing-down lead screw and a balance beam to be connected with the memorial archway, the main transmission motor is connected with the roll system through a universal spindle, the tension motor is fixed on the base through a bolt, and the roll system adopts a four-roller vertical distributing mode, a two-roller vertical distributing mode or a two-roller horizontal distributing mode. The multifunctional rolling mill can be used for rolling liquid, powdery and particle-shaped ultra-thin metal and alloy strap materials and has a continuously variable function, a stepless adjusting function and a function of optionally selecting transmission speed ratio of vertical rollers.

The invention discloses a nutation loose-teeth driving device, which comprises the input and the output shafts: the offset shaft sect is connected with the nutatoin disk throuth the bearing; the end face of the disk toward the input shaft is engaged with the fixing disk through the sphere loose-teeth of the first steel ball group along the circumferential direction; the fixing disk is fixed on the base; the other end of face of the dial toward the output shaft is engaged with the turning disk through the sphere loose-teeth of the second steel ball group along the circumferential direction; the bearing is between the turning disk and the base. The invention makes use of the roller assistant steel ball as the medium to engage with the loose-teeth between the fixing disks and the planetary turning disks. The invention is suitable for the precise driving devices.

The invention relates to the technical field of material testing and particularly relates to a high-frequency in-situ imaging fatigue tester. The tester comprises a tester body, a test sample clampingmechanism, a preset force loading mechanism and a voice coil motor, wherein the test sample clamping mechanism is used for clamping and fixing a test sample, and the test sample clamping mechanism comprises a first clamping assembly and a second clamping assembly which are arranged oppositely; the preset force loading mechanism is arranged at one side of the first clamping assembly of the test sample clamping mechanism and is used for applying preset tension and pressure to the test sample; and the voice coil motor is fixedly connected to the tester body, and a moving shaft of the voice coilmotor is connected to the second clamping assembly. The voice coil motor is utilized for realizing high-frequency actuation to perform high-frequency fatigue on the test sample, and high-energy X-raysare utilized for performing three-dimensional imaging on fatigue damage inside materials, thereby researching the high-cycle and even ultra-high-cycle fatigue failure mechanism of the materials.

The invention discloses a high bandwidth antenna servo control stable platform, and is aimed at providing a stable platform which is high in transmission stiffness and low in frictional resistance and can realize scan tracking of a same-caliber antenna. The stable platform is realized via the following technical solution: two push-pull connecting rod assemblies (7) are symmetric to a gyro assembly (5) and connected to a frame, a pitching drive motor (9) with a pitching rotary transformer (11) is fixedly connected to the middle part of two side azimuth drive motors via a pitching drive frame (6) fixedly connected with the two side azimuth drive motors (10), an azimuth drive frame (2) and the pitching drive frame are connected to an antenna feeder load upper frame (1) by the push-pull connecting rod assemblies to form a parallelogram mechanism of double frames and four push-pull rods, the lengths of the push-pull connecting rod assemblies (7) are adjusted via threads of a bulb (15), movement of two degrees of freedom of azimuth and pitching of the antenna feeder load upper frame is driven, the kinetic energy is transferred to the upper load frame, and the drive frame thus drives the load frame.

The invention relates to a marble high-precision movement platform. An X-axis linear guide rail and an X-axis linear motor are arranged on an X-axis marble base, an X-axis connecting plate is arranged on the X-axis linear guide rail, the X-axis linear motor and the X-axis connecting plate are in driving connection, and the X-axis connecting plate is controlled to move along the X-axis linear guide rail. A Y-axis linear guide rail and a Y-axis linear motor are arranged on a Y-axis marble base, a Y-axis connecting plate is arranged on the Y-axis linear guide rail, the Y-axis linear motor and the Y-axis connecting plate are in driving connection, and the Y-axis connecting plate is controlled to move along the Y-axis linear guide rail. The Y-axis marble base is connected with the X-axis connecting plate, and an included angle of 90 degrees is formed between the Y-axis linear guide rail and the X-axis linear guide rail. A quartz carrying table is arranged on a rotary DD motor, and the rotary DD motor is arranged on the Y-axis connecting plate. Movement is quiet, noise is low, an X-axis platform and a Y-axis platform can be dismounted, matching is convenient, and the modular design requirement is met.

The invention provides a cycloidal-pin wheel speed reduction type electric steering engine. The cycloidal-pin wheel speed reduction type electric steering engine comprises a servo motor, a servo motorbevel gear, a shell, an eccentric shaft, a rear end cover, a first crossed roller bearing assembly, a second crossed roller bearing assembly, a first cycloidal gear support, a second cycloidal gear support, a first cycloidal gear support roller assembly, a second cycloidal gear support roller assembly, a roller pin assembly, a cycloidal gear, a flange and an axial locking part, wherein the eccentric shaft, the rear end cover, the first crossed roller bearing assembly, the second crossed roller bearing assembly, the first cycloidal gear support, the second cycloidal gear support, the first cycloidal gear support roller assembly, the second cycloidal gear support roller assembly, the roller pin assembly, the cycloidal gear, the flange and the axial locking part are arranged in the shell. According to the technical scheme, the first cycloidal gear support cooperates with the cycloidal gear and the rear end cover, and the second cycloidal gear support cooperates with the cycloidal gear and the flange, so that the hinge moment and bending moment bearing capacity of the steering engine are remarkably improved, and the steering engine has the advantages of being high in rigidity and precision and simple and compact in structure; and the electric steering engine can realize high-bearing and high-precision operation in a narrow space.

The invention discloses a dual-purpose main shaft in an Electric Discharge Machining machine tool. The dual-purpose main shaft is characterized by comprising a main shaft system and a linear motor system, wherein the main shaft system is arranged on a stand column of the Electric Discharge Machining machine tool and involves a Z-axis servo motor, a ball screw, a Z-axis sliding seat and an R shaft,the linear motor system involves a linear motor and an electrode wire clamping mechanism, an electric motor is connected with the electrode wire clamping mechanism, a motor stator is fixed on a mounting plate, and the mounting plate is fixedly mounted on the Z-axis sliding seat. According to the dual-purpose main shaft in the Electric Discharge Machining machine tool, under the condition that a common Electric Discharge Machining main machine structure is not changed, the linear motor is combined to the servo motor drive, and the transformation cost is small, the machining requirements of a large-depth-diameter-ratio micro-hole, a narrow slit and a narrow groove can be met, the large-weight and large-area electrode machining task requirements can be met.

The invention discloses a high-rigidity transmission mechanism. The high-rigidity transmission mechanism comprises a mechanism body, screw bearings, a ball screw pair, rocker arms, adjusting rings, adjusting ring spacing collars, guide bearings, and guide strips. The ball screw pair does circular motion, in the moving process, a ball nut can only do vertical translation due to existing of the guide bearings, supporting arms extending from the two ends of the ball nut are connected with rocker arm shifting forks through the adjusting rings, and accordingly, the vertical translation of the nut is converted into circular motion of the rocker arms. Force produced through load torque can be uniformly distributed through the two supporting arm structures of the ball nut, deformation of the rocker arms is decreased, and the rigidity is improved; the outer ends of the supporting arms of the ball nut are provided with the guide bearings to make contact with the guide strips, self rotating of the ball nut is limited, and the gap in the ball screw pair is eliminated; meanwhile, the inner circle and the outer circle of each adjusting ring are in interference fit so that the clearance can be eliminated; and the adjusting rings and the rocker arms are made of a stainless steel material and subjected to heat treatment so that the hardness and abrasion resistance of the surfaces of the adjusting rings and the surfaces of the rocker arms can be improved.

A test bed of vibration absorber in two way electromechanical actuating type consists of í‹ LíŒ shaped body base formed by rigid ¿C connecting base with vertical column ; electromechanical actuator formed by power mechanism , driving mechanism and executing mechanism ; turnover mechanism on body base for rotating said actuator on lead vertical surface , locking mechanism on base and vertical column for locking said actuator and counter force seat on both base and vertical column .

The invention belongs to speed reducers, and specifically relates to a nutation oscillating-tooth speed reducer. The nutation oscillating-tooth speed reducer is characterized in that a bull-eye type nutation-disc oscillating-tooth transmission mechanism comprises a nutation disc, a nutation bearing, a bearing sleeve, an end cover, bull-eye type round-ball rolling pair sets, a fixed disc tooth slot and a rotating disc tooth slot; each bull-eye type round-ball rolling pair set is formed by arraying a plurality of bull-eye type round-ball rolling pairs; and each bull-eye type round-ball rolling pair consists of a round ball, a round ball check ring, a rolling ball and an oscillating-tooth main body. The speed reducer is reasonable, novel and special in design, has a compact structure, can solve the problem that the similar speed reducer has a complex structure, large volume and low transmission efficiency, and also can prevent the defect of top cutting generated when the transmission ratio is great; and simultaneously, the speed reducer has the characteristics of high transmission precision, high transmission rigidity, high transmission efficiency, low noise, big transmission ratio, long service life, few parts, small volume, light weight, convenience for installment, manufacturing and maintenance, good bearing capability, no need of output mechanisms, and the like.

The invention discloses a magnetic suspension intelligent carrier which comprises a steel structure unit. The steel structure unit comprises outer carrier frames, an inner carrier frame, a braking auxiliary wheel, a linear motor, a front wheel centering system, a rear wheel centering system, a guide rail, suspending electromagnets, guide electromagnets and a vehicle carrying frame. The vehicle carrying frame is used for fixing vehicles. The lower portion of the vehicle carrying frame is connected with a left hanging device and a right hanging frame. The cross section of the left hanging device and the cross section of the right hanging device are in an L type, and the guide electromagnets are arranged on the inner side of the vertical wall face of the L-type cross section of the left hanging device and the inner side of the vertical wall face of the L-type cross section of the right hanging device respectively. The suspending electromagnets are arranged on the upper surface of the horizontal wall face of the L-type cross section of the left hanging device and the upper surface of the horizontal wall face of the L-type cross section of the right hanging device respectively. The front wheel centering system and the rear wheel centering system are used for enabling the vehicles to be placed in the center of the magnetic suspension intelligent carrier.

The invention provides a rope transmission mechanism. The rope transmission mechanism comprises a steel wire rope, a connecting device and a tensioning device, wherein the steel wire rope is sequentially wound on a driving wheel and a driven wheel in a certain direction and forms a steel wire ring; the driving wheel pulls the driven wheel to rotate through the steel wire rope; the connecting device comprises a driving wheel connecting device and driven wheel connecting devices; the driving wheel connecting device is arranged on the driving wheel and connects the driving wheel and the steel wire rope; the driven wheel connecting devices are arranged on the driven wheel and connect the driven wheel and the steel wire rope; and the tensioning device is arranged between the driving wheel and the driven wheel and connected with the steel wire rope and is used for tensioning the steel wire rope. According to the single-rope transmission in the embodiment of the invention, on the premise of a narrow installation space, the space utilization rate is increased, and the selected diameter of the rope is increased, so that the transmission rigidity is improved. The continuous tensioning mechanism is convenient to adjust, the upper section and the lower section of the steel wire rope are effectively and synchronously tensioned, and movement coordination and force transmission stability are guaranteed.

The invention discloses a long-distance, heavy-load and parallel-axis type precision 2:1 transmission mechanism. The mechanism mainly comprises an input shaft, an output shaft, a flexible transmission part, a pre-tensioning pressing block, an end part fixing block, etc., wherein the input shaft is parallel to the output shaft and is connected with the output shaft through a flexible transmission part; two ends of the flexible transmission part are fixed to the output shaft; an intermediate part of the flexible transmission part is fixed to the input shaft; the input shaft in rotating can drive the flexible transmission part, and the flexible transmission part can synchronously pull the output shaft to rotate; as the input shaft and the output shaft of the whole mechanism are correspondingly connected with a driving end and a load end of an limited cornering device, the parallel 2-1 transmission of the driving end and the load under the long-distance and heavy-load condition can be achieved. The mechanism has the characteristics of being high in transmission accuracy, high in transmission rigidity, simple in structure, convenient to dismount and mount, low in processing cost, and easy to construct; the problem that the long-distance, heavy-load and parallel-axis type precision 2:1 transmission is hard to achieve by a traditional transmission mode can be solved.

The invention discloses a fatigue testing machine. A mechanical part of the fatigue testing machine comprises a motor cover, a voice coil motor, a fixture, an upper support plate, a motor support plate, an intermediate plate, vertical columns and a bottom plate. The voice coil motor is used as a power source. The fatigue testing machine has the characteristics of high precision, high response speed, high transmission stiffness, smooth thrust, high reliability, no limitation of travel length and long life. The two vertical columns are used as main supports so that the structure is simple. Raw materials are saved in production and a cost is reduced.

The invention relates to a multistage-transmission speed-reduction clearance-elimination gear box for airplanes. The gear box comprises a gear box body, a clearance-elimination cushion block, bolts, nuts, a driving gear, an intermediate gear set and a driven gear set, wherein the driving gear, the intermediate gear set and the driven gear set are sequentially meshed for transmission; the driven gear set comprises a driven gear thin gear and a driven gear thin gear shaft; the driven gear thin gear sleeves the driven gear thin gear shaft; a rectangular notch is formed in a hub web plate of the driven gear thin gear; a lug is arranged on a web plate of the driven gear thin gear thin gear shaft; the driven gear thin gear passes through the rectangular notch, one side of the lug is arranged ina gap with the rectangular notch, and the other side is pressed against the clearance-elimination cushion block embedded in the rectangular notch; a contact surface of the clearance-elimination cushion block with the rectangular notch is arranged to be an inclined surface flaring outwards; and the bolts penetrate through the clearance-elimination cushion block and the driven gear thin gear shaft and are pressed against the nuts. The invention relates to a clearance elimination method of the multistage-transmission speed-reduction clearance-elimination gear box for airplanes, and tooth staggering clearance is adjusted by screwing nuts for a plurality of times, so that operation is convenient, the structure is simple, and maintenance is convenient.

The invention aims to provide an active clamping delivery mechanism comprising a main driving device, an auxiliary driving device, a pair of main sliding rails arranged symmetrically, main attachments connected to the main sliding rails and the main driving device, gripping jaws, and auxiliary attachments connected to the gripping jaws and the auxiliary driving device; the gripping jaws are movably connected to the auxiliary attachments movably, and arranged on the main sliding rails; the gripping jaws are arranged between the two main sliding rails symmetrically; and at least one of the two gripping jaws arranged symmetrically is movably arranged on the main sliding rail, and can only do rectilinear motion in the direction toward or opposite to the gripping jaw symmetrical to the gripping jaw movably arranged on the sliding rail. According to the active clamping delivery mechanism provided by the invention, the gripping jaws are driven by linear motors, so that the purpose of active clamping of the gripping jaws is achieved, the sliding contact between the gripping jaws and workpieces is avoided, and the surface quality of the workpieces is ensured; the sliding rails can be driven by the linear motors directly, and the dynamic response performance, positioning accuracy, transmission stiffness and transmission efficiency of a system are improved; and the running noise is reduced.