40results about How to "Achieving Motion Decoupling" patented technology

The invention relates to a silicon micro angular vibration output gyroscope composed of an upper layer and a lower layer. The upper layer is a gyroscope mechanical structure arranged on a monocrystalline silicon wafer. The lower layer comprises signal leads arranged on a glass substrate. The upper mechanical structure is composed of two similar-structured substructures, wherein the substructures are symmetrically arranged left and right, and the substructures are connected through a mass block connecting mechanism. The two substructures are respectively connected to crossbeams, which are connected to fixed pedestals through horizontal torsion bars. The fixed pedestals are arranged on fixed pedestal bonding sites on the glass substrate. Therefore, the upper mechanical structure is suspended above the lower glass substrate. The signal leads and the bonding sites are arranged on the lower glass substrate. According to the invention, with the horizontal torsion bar and the crossbeams, the gyroscope rotates around the z axis. Therefore, sensitive motion of the gyroscope is realized; motion decoupling of a driving direction and a detection direction is realized; the number of interference modes is reduced; requirement to processing precision is reduced; and sensitivity of the gyroscope is improved.

The invention discloses a three-degree-of-freedom large-stroke micro-positioning platform achieving driving force decoupling. The three-degree-of-freedom large-stroke micro-positioning platform comprises a micro-moving platform base body which sequentially comprises a bottom plate, a middle part and a top layer part from bottom to top; two transferring beams are arranged in the center of the middle part, wherein the first transferring beam is used for connecting the middle part and flexible hinge deformation structures of two Y-direction ends of the top layer part, and the second transferring beam is used for connecting the middle part and flexible hinge deformation structures of two X-direction ends of the top layer part; the top layer part is sequentially provided with the flexible hinge deformation structures, a moving platform and an output platform from outside to inside, and the output platform is arranged in the center of the moving platform; and the two ends of the output platform are connected with piezo-ceramic actuators through lever amplifying mechanisms correspondingly. According to the three-degree-of-freedom large-stroke micro-positioning platform achieving driving force decoupling, the flexible beams are used for connecting two decoupled parts of the moving platform, and equal distribution and decoupling of the driving force are achieved; and through driving of two voice coil motors, high-precision and large-stroke movement of the moving platform in the X-Y plane is achieved.

The invention refers to a kind of moving spider compound unit and movement decoupling parallel mechanism made up of above units, the character lies in: it includes two groups of moving spider units connected by a pole, the moving spider axis spaces are placed orthogonally, one moving spider includes two moving spiders whose axes are parallel and which is connected by a pole; the other moving spider includes three moving spiders whose axes are parallel and which is connected by two poles, the connecting point of the two groups of moving spiders is the third link. The movement decoupling parallel mechanism includes a base, a moving platform and three same or different moving spiders between them, the compound units are moving spiders' compound units, or the random combinations of the moving spiders.

The invention discloses a decoupling 6D force feedback device of a parallel four-rod type structure. The device is used for exactly simulating strength and direction of contact force and contact torque generated by interaction among objects in a virtual environment to realize man-machine force sense interactive perception. The device is composed of a fixed base, a three-degree-of-freedom parallel mobile unit and a three-degree-of-freedom parallel-serial rotation unit, wherein, the three-degree-of-freedom parallel mobile unit comprises three mutually orthogonal branches, each of the branches is composed of a mobile guide drive, a short connecting rod and a long connecting rod; the three-degree-of-freedom parallel-serial rotation unit is composed of a rotation base, a two-degree-of-freedom spherical parallel decoupling rotation mechanism, a serial shaft and a moving platform, all moving auxiliary axes intersect at the center of the moving platform and are mutually orthogonal. The device can achieve unconditional decoupling with six degrees of freedom, and has the advantages of simple structure, easy control, high movement accuracy, lower cost and the like.

The invention discloses an antisymmetric parallel connection direct drive motion decoupling high-precision servo platform. The antisymmetric parallel connection direct drive motion decoupling high-precision servo platform comprises a base, a movement flat plate, a first guide rail and a second guide rail; the first guide rail and the second guide rail are both fixed to the movement flat plate and are perpendicular to each other; the base is provided with a first slide rail parallel to the first guide rail and a second slide rail parallel to the second guide rail; the first slide rail and the second slide rail are each provided with a linear driving device in a matched manner; the first slide rail and the second guide rail are connected through a first slider; the second slide rail and the first guide rail are connected through a second slider; the linear driving device on the first slide rail drives the first slider to move so as to drive the movable flat plate to move in the X direction; and the linear driving device on the second slide rail drives the second slider to move so as to drive the movable flat plate to move in the Y direction, and therefore motion decoupling in the two movement directions of X and Y is achieved.

The invention discloses a high-precision positioning system and method for a large-aperture reflector. The positioning system comprises a reflecting mirror assembly, a mirror base assembly, a reflecting mirror support used for installing the reflecting mirror assembly, a multi-degree-of-freedom platform used for adjusting the position of the mirror base assembly and a controller. The controller isused for controlling the freedom degree platform to move according to the position information of the reflecting mirror assembly, the mirror base assembly and the multi-freedom-degree platform so asto drive the mirror base assembly to move to a target position. According to the high-precision positioning system for the large-aperture reflector, multi-degree-of-freedom linkage adjustment can be achieved through the multi-degree-of-freedom platform, the adjustment precision of the position of the reflector base is improved, and then the measurement and positioning precision is improved.

The invention relates to a quick cutter servo device with two decoupled shafts, and belongs to the technical field of cutting machining of optical curved surface parts and ultraprecise parts. A diamond cutter is fixedly connected with a cutter seat on a flexible hinge base body through a fixing screw, and the two ends of an X-axis piezoelectric stack are connected with the flexible hinge base body and an X-axis driving end respectively. The X-axis piezoelectric stack is connected with the flexible hinge base body through a first pre-tightening bolt, and a first Z-axis piezoelectric stack and a second Z-axis piezoelectric stack are connected with the flexible hinge base body and a Z-axis piezoelectric stack respectively. A displacement detection block is mounted behind the cutter seat on the flexible hinge base body, and the displacement detection block is fixedly connected with the flexible hinge base body through a fixing screw. The quick cutter servo device with the two decoupled shafts has the advantages that the structure is novel, the mode that a piezoelectric actuator is in parallel connection with a flexible mechanism is used, the inertia mass of the movement part of a flexible hinge mechanism is reduced, the operation bandwidth of an FTS device can be better increased, and the machining efficiency of the FTS device is improved.

The invention discloses an auxiliary supporting type wave simulation generating device under a high gravity field. The device comprises a model box and a wave generation unit; a rock-soil body is arranged at the bottom in the model box, a simulation maritime work structure is arranged on the rock-soil body, the water is placed at the upper part of the rock-soil body in the model box; a sliding module and a connecting rod are in rotational connection, the connecting rod and a rocker structure are in rotational connection, thereby accomplishing the power transmission and movement realization tothe rocker structure from a hydraulic cylinder, and the angle different problem between the rocker and a hydraulic cylinder piston rod in the rocker swinging process is solved. The height difference problem between the connecting location of the rocker and connecting plate and the piston rod of the hydraulic cylinder in the rocker swinging process is solved through the sliding module; the integration of the sliding and the rotation is realized through a relay sliding block structure, the self-adaptive matching of the combined transmission unit sliding device and rotation device and the rockerstructure swinging movement is realized, and the movement decoupling between the piston rod of the hydraulic cylinder and the rocker is realized.

The invention relates to a multi-axis two-degree-of-freedom synchronous swinging device. The synchronous swinging devicee comprises an outer frame, an inner frame, a plurality of rotating discs, a swinging mechanism, a pitching mechanism, a protective cover and a limiting device, wherein the inner frame is arranged inside the outer frame, the inner frame is rotationally connected with the first side surface and the second side surface of the outer frame through a first rotating pair, the plurality of rotating discs are uniformly distributed on the first end surface of the inner frame and are rotationally connected with the inner frame through a second rotating pair, the swinging mechanism is rotationally connected with the rotating discs through swinging connecting rods, the pitching mechanism is fixedly connected with the first end of the inner frame through a rocking bar, the protecting cover is arranged on the first end surface of the outer frame, and the limiting device is arrangedon the first side surface of the outer frame. According to the synchronous swinging device, two two-degree-of-freedom of rotation is realized, so that the working area can be adjusted within a certain range, a plurality of identical workpieces can be synchronously polished, meanwhile, the original machining main shaft of a machine tool can be replaced, so that the defects of the main shaft pose adjusting range are compensated, the processing precision is improved, and the production quality standard is controlled.

The invention relates to an indexable three-degree-of-freedom high-bandwidth vibration auxiliary cutting device, and belongs to the technical field of ultra-precision cutting machining. The indexablethree-degree-of-freedom high-bandwidth vibration auxiliary cutting device mainly comprises an elliptical vibration auxiliary cutting device, a precision rotary table and a fixed base. The elliptical vibration auxiliary cutting device is connected with the precision rotary table through a fastening bolt, and angle adjustment is carried out through the precision rotary table. The precision rotary table is connected with the fixed base through a fastening bolt, and the fixed base and the elliptical vibration auxiliary cutting device carry out auxiliary supporting on the device in a face contact manner through an arc-shaped boss. The indexable three-degree-of-freedom high-bandwidth vibration auxiliary cutting device has the beneficial effects that the space of the elliptical track at the toolnose position can be adjusted through 360-degree angle adjustment; and branch chains are formed by connecting trapezoidal thin plates, X-shaped hinges and straight circular flexible hinges in series,the four branch chains are connected with a tail end motion tool apron in parallel at 90 degrees to form a compliant mechanism, and high bandwidth and motion decoupling of all shafts can be achieved.The indexable three-degree-of-freedom high-bandwidth vibration auxiliary cutting device is compact in structure and can be widely applied to various machining machine tools and equipment of differentconfigurations.