144results about How to "Small movement mass" patented technology

The invention provides a three-dimensional translation and one-dimensional rotation parallel mechanism capable of realizing high-speed movement, comprising a fixed frame, a movable platform and four branched chains which are symmetrically arranged between the fixing frame and the movable platform and have same structures. The movable platform comprises an upper platform and a lower platform, which are horizontally arranged and are connected through a rotating mechanism. The rotating mechanism comprises a lead screw nut fixed on the upper platform and a lead screw connected with the lead screw nut, and the lead screw is supported by a bearing installed on the lower platform. In the three-dimensional translation and one-dimensional rotation parallel mechanism, the movement of the upper platform and the lower platform is converted into rotation round the axis of the lead screw through the rotating mechanism, and the upper platform and the lower platform are respectively and fixedly connected with a pair of opposite lower connecting shafts. In the invention, the upper platform and the lower platform which are horizontally arranged are adopted for the movable platform, and the upper platform and the lower platform are connected through the rotating mechanism, thereby the three-dimensional translation and one-dimensional rotation parallel mechanism has compact structure, avoids using a steering mechanism and an amplifying mechanism, reduces the mechanism complexity and the movement quality, is easy to realize high-speed capture, and meets the requirement of complex catching and releasing operation.

A parallel robot mechanism with 2D rotating and 1D moving is composed of a fixed platform, a moving platform and three branches. Two of three branches have same structure with a single-freedom moving set as drive set and are pivoted respectively to said both platforms. The third branch is a linearly driven telescopic connecting rod with one end fixed to the fixed platform and another end pivoted to the moving platform. Its advantages are high precision and dynamic performance, low moving quality and simple structure.

The invention discloses a wind tunnel model supporting device which comprises a movable platform, a clamping device, a first driving unit and a second driving unit, wherein the movable platform has three translational freedom degrees and at least one rotation freedom degree. The clamping device is connected with the movable platform and is used for fixing and supporting the model. The first driving unit and the second driving unit are arranged on the movable platform and used for driving the clamping device, and therefore, the clamping device obtains the freedom degrees of rotation in horizontal and transversal directions. The first driving unit comprises a first driving motor and a first rope traction mechanism. The second driving unit comprises a second driving motor and a second rope traction mechanism. The wind tunnel model supporting device with simple and reliable structure can realize six freedom degrees of the model in the wind tunnel test, effectively expand the model pitch and the roll amplitude capable of being realized by model supporting, and decrease the acceleration, the motion speed and the motion travel of the driving units through the first driving unit and second driving unit which are connected in parallel.

The invention relates to a tri-axial vibration composite experiment table and a plane static pressure type vibration transferring and decoupling device, wherein the experiment table comprises a working table top; and plane static pressure type vibration transferring and decoupling devices and vibration generators are connected in the direction of X, Y and X axes of the work table top. The plane static pressure type vibration transferring and decoupling device is characterized by consisting of a sliding block and a sliding seat via sliding connection; a sliding gap is arranged in a sliding surface; during the work, high-pressure oil is filled in the sliding gap through an oil filling channel to form a static pressure oil slick; as the static pressure oil slick has good rigidity under high pressure conditions, the sliding between the sliding block and the sliding seat is not obstructed. When a coaxial vibration generator generates high-frequency vibration and thrust, the vibration frequency and the thrust are transferred through a direction vertical to the static pressure oil slick; when a hetero-axial vibration generator generates high-frequency vibration and thrust, the decoupling is realized through the sliding between the sliding block and the sliding seat, so that the aim of combining the lossless transferring and the effective decoupling is realized to the greatest extent.

The invention belongs to the mechanical manufacture field and relates to a parallel 3-DOF drive mechanism of a spindle head. A fixed platform is provided with 3 drive moving pairs distributed according to the position of the apex of an equilateral triangle; each drive moving pair is connected with an input member bar which is driven by the drive moving pair; the other end of the input member bar is connected with a globe hinge and is connected with link blocks via the globe hinge; a movable platform is provided with 3 uniformly aligned driven moving pairs which are chutes; 3 link blocks are respectively installed in the chutes of the driven moving pairs and can move horizontally in the chutes; a spindle is arranged in the central position of the movable platform. By adopting parallel structure, the drive mechanism obviously improves the rigidity of the spindle head structure; in addition, the drive mechanism has the characteristics of having small movement mass, good dynamic property and high movement precision, moving and decoupling along the moving direction, and is suitable for independent working and combined machining in coordination with other devices.

The invention discloses an infrared Fourier spectrum detector with ultrahigh spectral resolution. An infrared light path consists of a pair of back-to-back angle mirrors, a pair of plane reflectors, a pair of obliquely-arranged reflectors, a beam splitter and a compensator; an angle mirror driving system consists of a linear motor and a linear bearing; and the angle mirrors are driven by the motor to perform linear reciprocating motion so as to generate light path difference. A reference light path and an infrared light path are in the same light path, the reference light path is positioned at the center part, and the infrared light path is positioned at the peripheral part. A reference light source adopts a frequency stabilized laser. A fore optical device is a horizontal access reflecting telescope, and a rear optical device focuses infrared interference light signals onto the infrared detector. The detector converts the interference light signals into electrical signals, the electrical signals are amplified by an amplifier and then converted into digital signals, and the interference signals are recorded by a data acquisition system according to position signals of a movable mirror so as to acquire an interference pattern. The interference pattern is subjected to Fourier transformation to acquire infrared spectrum signals.

The articulated structure (1) with three degrees of freedom for a multi-axis robot comprises a stationary base (10); an arm (11) hinged to the base about a first axis (Z1); a forearm (12) hinged to the arm about a second axis (Z2) parallel to the first axis, the forearm forming a deformable parallelogram structure and comprising a first connecting rod (121) and a second connecting rod (122) that are hinged to two plates (123, 124) about respective axes (X13, X14, X23, X24) that are perpendicular to the first and second axes. This structure also comprises a first electric actuator (21) controlling pivoting of the arm (11) about the first axis (Z1); a second electric actuator (22) controlling pivoting of the forearm (12) about the second axis (Z2); and a third electric actuator (23) controlling pivoting of one of the first connecting rod (121) relative to the plates (123, 124) about the axes (X14, X24) that are perpendicular to the first and second axes (Z1, Z2). The third actuator (23) is mounted on the base (10) or on the arm (11).

The lifting / lowering assembly, for skid conveyors, has a ground frame (1) and a carrier frame (2) which can be elevated and depressed. A scissors system (4) is between the frames, with a center axis (43), to give a parallel movement action on the carrier frame. An eccentric lifting unit (5) with an eccentric lever (55) is at the center axis, to give the raising / lowering movements by rotation around the center axis, with running rollers (551,552) riding on running rails (510,520) at both frames. The eccentric lever has a chain drive (3). The carrier frame has a roller path, for the skid movements.

The invention discloses a parallel motion decoupling servo control platform, which comprises a pedestal, a first linear motor, a second linear motor and a motion platform, wherein the motion platform is arranged between the first linear motor and the second linear motor, a first side and a second side of the motion platform are respectively connected with a first motor rotor and a second motor rotor, and are respectively moved along a first horizontal direction and a second horizontal direction under the drive of the first motor rotor and the second motor rotor. According to the parallel motion decoupling servo control platform provided by the embodiment of the invention, by adopting a parallel structure, the parallel motion decoupling servo control platform is simple and symmetrical in structure, motion components in the first horizontal direction and the second horizontal direction can be exchanged so as to be convenient for processing and maintenance, levelness of the motion platform during motion is more easily ensured at work, and an execution result from input of a drive force electric signal to motion of the motion platform is more consistent in each motion direction so as to be beneficial for controlling precision of a track outline of planar motion.

The invention relates to a machine tool for milling workpieces, provided with at least two linear displacement axes and at least one pivot axis for carrying out relative movements between a tool and the corresponding workpiece with a workpiece mounting in which a workpiece may be clamped between two clamping points, whereby one of the linear displacement axes is provided as workpiece axis of the workpiece mounting, by means of which the workpiece may be linearly driven, which is furthermore provided with a tool holder for mounting a cutting machining tool, driven in rotation about a tool axis by means of a tool drive. The same conditions are achieved for workpieces of greatly different length for a highly accurate production, whereby two physically separate carriages (27, 28) for the workpiece mounting are provided, on each of which one of the clamping points (16, 17) is arranged and which both may be linearly driven along the same workpiece axis independently of each other.

The invention relates to a fuel injector (10) for injecting fuel into a combustion chamber of an internal combustion engine. An injection valve element (42) is actuated via pressure relief of a control space (36). Said control space (36) is loaded by a system pressure Rhosys. The control space (36) is relieved of pressure via a solenoid valve (22) of pressure-equalized configuration, the valve element (62) of which opens or closes a valve seat (80). The valve seat (80) comprises a spherical surface (86).

The invention relates to a solenoid valve. A magnetic circuit of the solenoid valve comprises a soft magnetic core (6), a magnetic ring (8) and an armature iron (9). The magnetic ring (8) is assembled inside a blind hole of a control valve body (11) in a stationary fit way, the blind hole is concentric with a control valve core, and the armature iron (9) is assembled below the control valve core. Because the inner hole of the magnetic ring (8) is concentric with the outer circumference of the armature iron (9), the concentricity of all the mobile components of the solenoid valve is ensured. The mass of the armature iron (9) is much lower than that of conventional solenoid valve armature irons, so that the response speed of the inventive solenoid valve is faster. The inventive solenoid valve can be used in electrically controlled monoblock pumps, spray nozzles of electrically controlled pumps, and high-pressure common rail oil sprayers.

The invention discloses a differential-principle-based two-degree-of-freedom parallel-connection rotating platform. According to the rotating table, a bevel gear A (1) and a bevel gear B (2) are perpendicularly installed through an L-shaped support (4), and outer teeth of the bevel gear A and outer teeth of the bevel gear B are meshed. A load is installed on a disc of the bevel gear A (1) and located at the hollow portion of an inner sleeve (9). Two driving assemblies are symmetrically installed on the two sides of a supporting assembly (5). An outer sleeve (8) and the inner sleeve (9) are installed in the middle of the supporting assembly (5). The outer sleeve (8) is connected to one end of the inner sleeve (9) in a sleeving mode. The two sleeves are provided with ball bearings. According to the rotating platform, rotation and pitching motion of the load can be achieved through a pair of bevel gear mechanisms with the perpendicular axes on the basis of the differential principle. The parallel-connection rotating plate is small in whole size and inertia, high in rotating speed and strong in load capacity and is of the hollow structure.

In a wire-processing machine, a belt-drive feeds a wire to a first swivel-arm with a first gripper. To feed the leading wire-end to processing stations, the first swivel-arm is set in a swiveling motion and / or in a linear motion. To feed the trailing wire-end to processing stations, the second swivel-arm is set in a swiveling motion and / or in a linear motion. After processing of the leading wire-end, by means of the belt-drive the desired cut-off length of wire is advanced and, by means of a transporting system, is transported further.

A screw motor is a motor which can convert electric energy into linear motion mechanical energy and comprises a lengthened stator and a shell, the shell and the stator are provided with slots along the axial direction, a rotor is hollow and is not lengthened, the shaft of the rotor is a screw rod shaft fixed on the end cover of the motor shell, the rotor and the screw rod shaft are connected by threads, the two ends of the rotor are respectively provided with a bearing, the outer edges of the bearings are respectively provided with a shifting fork, the end parts of the two shifting forks are fixedly connected with a beam which is positioned in the slot of the motor shell and can linearly slide in the slot. The rotor can do spiral movement on the screw rod shaft under the action of electromagnetic force, and the shifting fork beam is driven to output power externally by the bearings and the shifting fork. The shifting fork beam plays the role of magnetic conduction while outputting power externally, thus guaranteeing the integrity of the part of the shell coupled with the rotor and a stator magnetic circuit. The screw motor has the advantages of being directly used as the power source for linear motion, and having higher acceleration and energy conversion efficiency.

The invention relates to the field of high-voltage switches of power systems, in particular to a super-quick vacuum switch device. The super-quick vacuum switch device comprises two to four super-quick vacuum switch modules which are connected in series; a first operating mechanism and a second operating mechanism of each super-quick vacuum switch module are respectively positioned below a first epoxy embedded vacuum pole and a second epoxy embedded vacuum pole; a first voltage equalizing device and a second voltage equalizing device are respectively connected in parallel with the first epoxy embedded vacuum pole and the second epoxy embedded vacuum pole; a pulse current generator is connected with each of the first operating mechanism and a second operating mechanism; an isolation auxiliary power supply outputs a first direct-current voltage to provide power for a quick switch controller, and outputs a second direct-current voltage to provide charging voltage for the pulse current generator; the quick switch controller is connected with the pulse current generator; the quick switch controller is communicated with a direct-current circuit breaker control device positioned at ground potential through an optical fiber. The switch device is light in moving mass, quick in response and simple in structure, and facilitates module cascade extension.

The invention belongs to a two-way multifunctional electromagnetic valve which comprises a valve body and an electromagnet part. The electromagnet part adopts a coil injection-molding assembly; and a TVS (transient voltage suppressor) pipe is arranged in the coil injection-molding assembly. The valve adopts a valve core structure that springs are embedded in a static magnetic core and a dynamic magnetic core and a structure that the static magnetic core is combined with a metal sleeve, has the structure characteristics that a rubber sealing layer at the front end of the dynamic magnetic core simultaneously separates a medium inlet and a medium outlet of the valve body and the medium inlet and the medium outlet are exchangeable, and is an electromagnetic valve which can simultaneously controlled by a direct current signal and a direct current pulse electric signal and further can be simultaneously applicable to a gas medium or a liquid medium, and the medium inlet and the medium outlet of the valve can be used in an exchangeable way.

The invention provides an exchange apparatus and method for a double-workpiece stage based on double-guide rail double-drive step scanning, belonging to the technical field of manufacture equipment for semiconductors. The exchange apparatus comprises a base station and workpiece stages located at an prealigning station and an exposure station; four Y-oriented rectilinear motion units and two X-oriented rectilinear motion units are preset on a balancing mass, and three-phase exchanging of the workpiece stages between a prealigning area and an exposure area is finished through butt joint between rectilinear motor stators of the Y-oriented rectilinear motion units and Y-oriented transitional rectilinear motion units; a first Y-oriented rectilinear motor mover 1 is fixedly connected with a first workpiece stage, a fourth Y-oriented rectilinear motor mover 1 is fixedly connected with a second workpiece stage, and the Y-oriented rectilinear motion units and the X-oriented rectilinear motion units form a double-guide rail double-drive structure at the exposure station. According to the invention, during exchanging of the workpiece stages, three phases are employed, which allows exchanging efficiency to be improved; in specific embodiments of the invention, the advantages of small inertia of motion, short time for stabilization, great structural rigidity, centroidal driving at the exposure station and the like are realized.

The invention discloses an A / B shaft parallel mechanism, comprising a fixed platform, a movable platform, a first branch and a second branch, wherein the first branch and the second branch are connected between the fixed platform and the movable platform; the movable platform comprises a main platform and four connecting rods; four connecting rods are connected through a revolute pair to form a plane parallelogram structure; a first driving arm, two first driven arms and the movable platform form a group of plane parallelogram structures inside the first branch, so as to prevent the movable platform from translating along the axis direction of the revolute pair on the driving arm; a second driving arm, two second driven arms and the movable platform form another group of plane parallelogram structures inside the second branch, so as to prevent the movable platform from translating along the axis direction of the revolute pair on the second driving arm; and the two-dimensional rotation of the movable platform is achieved by controlling rotation of the first driving arm and the second driving arm. The A / B shaft parallel mechanism is simple in construction, compact in structure, small in motion mass, convenient to assemble, and easy to control, and can be used for robot joints or machine tool accessories.

The invention relates to a method for handling and modernizing ropes in an elevator, which elevator comprises at least an elevator car (1) arranged to run in an elevator shaft along the guide rails (16), a counterweight (2) connected to the elevator car (1) with hoisting ropes (3) from above, a hoisting machinery with a traction sheave (5) above the elevator car (1), and compensating ropes (4) connected between the elevator car (1) and the counterweight through a compensating mechanism (8) at a lower part of the elevator shaft. The old hoisting ropes (3) and compensating ropes (4) are dismantled when the elevator car has been run to the upper part of the elevator shaft without a risk of losing the friction on the traction sheave (5).

Disclosed is a device (V) for concentrating a liquid (F) which is pumped through a concentrating apparatus (3) by means of a differential piston pump and directly impinges the differential piston (K) in an assisting manner during the conveying stroke at a residual pressure as a concentrate (FK). The differential piston of said device (V) is driven by a drive shaft (12) that actuates a linearly guided valve control member (18) of an intake and discharge valve assembly (A). The differential piston pump is embodied as a radial piston pump (R) in which eccentric attachments (13, 14) for the differential piston (K) and the valve control member (18) are disposed on the drive shaft (12), the differential piston (K) and the valve control member (18) being hinged directly to the eccentric attachments (13, 14) by means of traction and pressure couplings (S).

The present invention belongs to the field of industrial robot. The robot mechanism consists of one frame, one moving stage and three branches to connect the moving stage to the frame to form a parallel closed loop structure. Of the branches, each of two contains two single-freedom motion pairs and one ball articulation, and the third contains one single-freedom motion pair and one Hooke. The ends containing the moving stage and the frame are not collinear. The robot mechanism of the present invention combines the spatial shift and rotation and has the advantages of high rigidity, high accuracy, low motion mass high dynamic performance, very easy kinematics solution, etc.2

The invention relates to a linear actuator which comprises coil back iron and magnetic iron. The coil back iron is arranged at one end of the magnetic iron, a coil is wound on the coil back iron, the number of the coil back iron is two, the two coil iron bodies are arranged at the upper end and the lower end of the magnetic iron, distances from each of the two coil iron bodies to the magnetic iron are identical, and the linear actuator further comprises a magnetic iron supporting structure. The magnetic iron supporting structure comprises two bushes connected on the two sides of the magnetic iron, and the two bushes are connected on two fixed shafts and slide along the two fixed shafts. The linear actuator has the advantages of being stable in structure, good in transmission effect, prone to heat dissipation and easy to control.

A 5-dof (degree of freedom) virtual axis machine with five axes in parallel has a structure that a moving station is connected with a fixed station by five connecting rods which are connected with the moving station by a hinge and which are connected with the fixed station by a motion cutting. Each connecting rod can be retractable or with a fixed length. The moving station is equipped with a motorized spindle and a cutting tool. The present invention has an obviously reduced systematic motion nonlinearity and coupling degree, a good processing and assembling manufacturability and low cost and can be widely applied to the processes of space curved surfaces (such as die, an impeller, a helical gear).

The thread guide unit has a thread guide that is configured for feeding a thread. A belt drive is provided with a drive belt (16) at which the thread guide is secured, with the pulleys (18,20). A steering wheel and controllable drive motor (42) configured for driving two pulleys. The pulleys for the lateral guide of the drive belt are provided with a flanged wheel (44). The pulleys with rotational axes (18a,20a) is arranged relative to a solder (48) of a belt plane such that drive belt is fed in the side edge (16a) against the flanged wheels.

A structurally integrated in-situ actuation fully-displaced composite amplified piezoelectric inchworm linear platform comprises a fixed platform and movable platform tops slidably connected through two cross roller guide rails, and stopper bars are arranged below the movable platform tops. A first clamping group and a second clamping group, and a first driving group and a second driving group arearranged between the two stopper bars, and driving units make telescopic movement along the length direction of the stopper bars; each driving unit comprises a clamping arm connected with the telescopic end of the driving unit, the clamping arms release and clamp the stopper bars, and a movable gap is arranged between the adjacent clamping arms. The first clamping group, the first driving group,the second clamping group and the second driving group are sequentially controlled to make the movable platform tops walk and position in an inchworm-like manner. The platform has the advantages of compact structure, large movable table tops, integrated clamping and driving mechanism, low requirement for the machining and assembling precision of the clamping and driving mechanism, sufficient clamping and releasing, power-off clamping, fast moving speed and small moving error.

The locking mold oil tank free hydraulic locking mode injection machine comprises a static mold plate, an active mold plate, cross rod fastened to both ends of the static mold and back mold plate, quick mold displacing oil tank on the static mold plate whose sticking end connected with the active mold plate. It also comprises stepwise sleeves and end cap, No.1 pin hole, with the stepwise sleeve and end cap fastened by bolt and two nuts into free positioning locking mold set, more than one No.1 electromagnetic pins on the circumference of the stepwise sleeve composed of pin inserting to the No.1 pin hole and the coil driving the up and down movement of the pin, No.2 pin hole and two ring boss at one side, sealing tightly with grooves surrounding the cross rod, forming four compression cavity by four end caps and active mold plates, inside the active mold plate having oil through hole connecting the compression cavity with the hydraulic source, sticking plate on the active mold plate with No.2 electromagnetic pin and through holes, with the No.2 electromagnetic pin being able to pass the through hole, sticking to the pin inside the No.2 pin hole and driving the up and down movement of the coil on the pin . Free from locking mold oil tank, with increased locking mold force, it solves the sealing issue of the locking mold oil tank, with small components, low requirements for the parts, small consumption materials and moving weight, long opening stroke of the active mold plate, and strong suitability for the mold.

The invention relates to a linear motor capable of positioning a load. The linear motor comprises two coil units and a magnet row which are arranged linearly, wherein the two coil units comprise an upper coil unit and a lower coil unit; the upper coil unit comprises an upper stator tooth and a coil wound on the upper stator tooth; the lower coil unit comprises a lower stator tooth and a coil wound on the lower stator tooth; the upper stator tooth and the lower stator tooth are arranged in the opposite directions; and the magnet row is arranged in the middle of the two coil units. The linear motor has the advantages that: an iron core motor with magnetic protection iron is not required, so the magnetic protection iron is omitted; furthermore, a supporting structure is extremely low in mass, so the moving mass is reduced; and when an effective load is moved, higher acceleration is realized.

The invention provides a horizontal machine tool, which includes a machine base, a working slide table and a spindle device. The working slide table includes the first working slide table, the second working slide table and the third working slide table installed on the machine base; the third working slide table is set on the second working slide table, and the slider of the third working slide table is used In order to support the workpiece and move with the workpiece, the movement direction of the third working slide is roughly set vertically and moves together with the slider of the second slide; the movement direction of the second work slide is perpendicular to the third work slide The movement direction of the third working slide is set on the second working slide and moves together with the second working slide, and the moving direction of the first working slide is perpendicular to the direction of the second working slide and the third working slide direction of motion. The horizontal machine tool has small structural size, small volume, low driving power in the vertical direction, and is easy to use.