35results about How to "High motion resolution" patented technology

Disclosed is a parallel robot set to assemble diminutive machine. The robot comprises two same three-dimensional parallel frames which are in series. The parallel frame has three active links that comprise two Huke gemels and a micro displacement amplifier. The computer control system drives the displacement output of the piezoelectricity equipment. The undersides of the three active links are connected with the middle plate, and another side is connected with the work plate in a parallel frame group.In another group, the undersides of the three active links are connected with the underpan, and another side is connected with the middle plate. The middle plate is hung under the underpan. The two fingers of the robot are set on the work plate and the middle plate, which can work just like the human fingers.

The invention relates to a six-degree-of-freedom series-connected robot with target positioning applied to inertial confinement fusion. By using a form of a series-connected mechanism for separating translation and rotation, and the six-degree-of-freedom series-connected robot with target positioning consists of a set of three-dimension translation work table and a set of three-dimension rotary robot. The translation and the rotation of each direction are both driven by a vacuum special motor actuator, each movement is relatively independent, and the precision movement of six freedom degrees can be finished in the space. By constructing a precise vacuum positioning mechanism with the six-degree-of-freedom in the space, the invention has the advantages of compact structure, small duty ratio angle, high motion resolution, easy control and precise positioning.

The invention discloses an inchworm-type precise linear micro-actuator based on a complaint mechanism. The inchworm-type precise linear micro-actuator comprises driving mechanisms, two clamping mechanisms and stators, wherein each driving mechanism consists of four symmetrically arranged driving branch chains and one pair of stators, each driving branch chain consists of two lever structures, the driving branch chains are connected to the stators by adopting flexible hinges, and reciprocating micromovement can be performed relative to the stators; each clamping mechanism consists of three pairs of flexible hinges, one pair of levers and one pair of clamping pieces which are symmetrically arranged, and the two clamping mechanisms are symmetrically connected to two ends of each driving mechanism through the levers; the stators are of long and thin cylinder-shaped structures, are arranged at the symmetrical center of the micro-actuator, are matched with the clamping mechanisms through holes, are matched with the driving mechanisms through through grooves, and can move in the holes and the through grooves. The clamping mechanisms are driven by the driving mechanisms to carry out reciprocating motion, and the stators are driven by the clamping mechanisms to perform a bionic inchworm motion law in the motion manner of linear motion. The disclosed micro-actuator can be used in the fields of ultra-precision machining, precision engineering, micro electro mechanical systems, bioengineering, semiconductor manufacturing and the like.

The invention relates to a high-precision phase shift device of a lateral shear interferometer, which comprises a shear grating, a mask assembly, a base, a one-dimensional small travel high resolution displacement assembly, a one-dimensional big travel high resolution displacement assembly and a phase shifter leveling assembly. The shear grating is located in and fixed on the one-dimensional small travel high resolution displacement assembly, the mask assembly is fixed at the bottom of the one-dimensional small travel high resolution displacement assembly and keeps to be relative static with the one-dimensional small travel high resolution displacement assembly fixed on the one-dimensional big travel high resolution displacement assembly which is fixed on the base, and the phase shifter leveling assembly is connected with the bottom of the base. The high-precision phase shift device has the advantages of being ultrahigh in movement resolution, big in movement travel, high in dynamic response, capable of conducting high-precision fine tuning position in a relative large travel range, and compact in axial size simultaneously.

The invention relates to an optical glass automatic installing device for a triangular laser gyroscope. The optical glass automatic installing device consists of an incidence laser obtaining system, a glass clamping mechanical arm with a force sensor, an optical glass position automatic regulation unit, an photoelectric detection unit, a facula image detection unit and a laser gyroscope cavity location unit, and is used for finishing the automatic installation of plane mirrors without coating films and spherical mirrors of the triangular laser gyroscope under the monitoring of multiple sensors. According to the optical glass automatic installing device for the triangular laser gyroscope, manual operation is replaced by an automatic device, the structure is simple, the motion resolution is high, the installation consistency is good, and the efficiency is high.

Disclosed is a piezoelectric driving large-stroke no-coupling two-dimensional precise micro locating platform. The piezoelectric driving large-stroke no-coupling two-dimensional precise micro locating platform is characterize in that the platform comprises an outer layer support seat, a rhombus displacement magnifying mechanism, a piezoelectric ceramic actuator, symmetrical long arm hinges, an inner layer base plate and a workbench; and compared with the prior art, the platform has the advantages that 1, X-direction and Y-direction independent motion can be achieved, and X-direction and Y-direction simultaneous motion can also be achieved; 2, the maximum displacement output quantities in the X direction and the Y direction are close; 3, displacement quantity can be increased, coupling is eliminated, and error is reduced; and 4, the platform has the advantages that mechanical friction, delaying and clearance are avoided, lubrication is not needed, heat and noise are not produced, and the motion resolution is high.

The invention discloses an inertial non-resonant biped piezoelectric linear actuator, which comprises a base, wherein a guide rail is arranged at the upper part of the base; a stator assembly is also arranged at the upper part of the base and is axisymmetrically distributed left driving foot of the stator assembly and right driving foot of the stator assembly; left laminated piezoelectric ceramic and right laminated piezoelectric ceramic are arranged in the left driving foot of the stator assembly and the right driving foot of the stator assembly respectively; and protruding parts of the driving feet of the stator assembly are in contact with one side of the guide rail. The invention further provides a working method of the inertial non-resonant biped piezoelectric linear actuator. Voltage slow-rising and fast-dropping and fast-rising and slow-dropping same-frequency sawtooth wave voltage signals are applied to the left laminated piezoelectric ceramic and the right laminated piezoelectric ceramic in two symmetrically arranged driving foot mechanisms respectively, so that stable continuous straight motion can be achieved, and the inertial non-resonant biped piezoelectric linear actuator has the advantages of being simple in structure, stable in operation, accurate in positioning, high in motion resolution and relatively low in cost.

The invention relates to a precise motion driving device based on a bionics principle and belongs to the technical field of geometric quantity measurement. The precise motion driving device comprises a front sucker, a front piezoelectric ceramics micrometric displacement driving element, a motion output supporting point, a back piezoelectric ceramics micrometric displacement driving element, and a back sucker, wherein an iron soft magnetic conductive panel used for fixing the driving device is used as the peripheral equipment of the driving device; and the motion output supporting point is driven to realize the nanometer precise positioning driving in a large motion scope by coordinating the suction actions of the front and back suckers and the stretching actions of the front and back piezoelectric ceramics micrometric displacement driving elements and pushing. The precise motion driving device based on a bionics principle has simple structure, low heat productivity, no pause in motion process, high motion resolution ratio and large motion scope which is only limited by the size of the iron soft magnetic conductive panel. The precise motion driving device can realize the precise motion and is suitable for the occasions requiring low-speed running.

A parallel micromanipulation robot comprises a left micromanipulation arm and a right micromanipulation arm, which are the same in structure and symmetrically arranged. Each of the left and right micromanipulation arms comprises a semi-cylindrical micromanipulation arm frame, three branch chains, a micromanipulation arm moving platform and a micromanipulation arm terminal tool. Each branch chain comprises a micro-displacement driver, a flexible prismatic pair and two branches the same in structure; one end of every branch is connected with the left micromanipulation arm moving platform, and the other end of each branch is connected with the corresponding flexible prismatic pair; the axes of the two branches are parallel to each other; the fixed end of the micro-displacement driver is connected with the left micromanipulation arm frame, and the drive end of the micro-displacement driver is connected with the flexible prismatic pair. The three branch chains forming each micromanipulator arm are evenly distributed in a semi-cylindrical space. The parallel micromanipulation robot allows for three-dimensional high-precision operation, is compact in overall structure with wide operating range and high resolution, and is widely applicable to the fields such as biomedical engineering and precision engineering.

The invention discloses an inchworm precision rotary micro-driver based on a compliant mechanism, which comprises two driving mechanisms, two clamping mechanisms, a mover and a bracket, wherein the two driving mechanisms, namely, the first driving mechanism and the second driving mechanism, are the same in structure; the two clamping mechanisms, namely, the first clamping mechanism and the secondclamping mechanism, are the same in structure; the two driving mechanisms are respectively located at two sides, and the two clamping mechanisms are located between the two driving mechanisms; the mover is located on the bracket and placed at the symmetry center of the rotary micro-driver and mutually cooperated with the mechanisms through an output hole; the clamping mechanisms can clamp or release the mover; when the clamping mechanisms clamp the mover, the mover rotates along with the clamping mechanisms; and when the clamping mechanisms release the mover, the mover moves freely. The micro-driver provided by the invention has the advantages of large travel, high resolution, large output load, bidirectional movement and the like.

The invention discloses a device and method for improving the motion resolution of a standing wave type piezoelectric ultrasonic motor. The device comprises a mode switching device; the mode switching device comprises a clamping device, a base, a sliding seat and a guide pin; the base is fixedly installed on a stable structure, the guide pin is fixedly connected into the base, and the sliding seat is installed in the base and can freely move in the axial direction of the guide pin; the piezoelectric ultrasonic motor is mounted on the sliding seat; and the clamping device is used for fixing and releasing the sliding seat, so that the motion state switching of the piezoelectric ultrasonic motor is realized, and the motion resolution of the piezoelectric ultrasonic motor is improved. According to the invention, the resolution switching device is introduced, so the coarse positioning and fine positioning motion mode conversion of the standing wave type piezoelectric ultrasonic motor is realized, and the motion resolution of the system is effectively improved.

The invention relates to a six-degree-of-freedom series-connected robot with target positioning applied to inertial confinement fusion. By using a form of a series-connected mechanism for separating translation and rotation, and the six-degree-of-freedom series-connected robot with target positioning consists of a set of three-dimension translation work table and a set of three-dimension rotary robot. The translation and the rotation of each direction are both driven by a vacuum special motor actuator, each movement is relatively independent, and the precision movement of six freedom degrees can be finished in the space. By constructing a precise vacuum positioning mechanism with the six-degree-of-freedom in the space, the invention has the advantages of compact structure, small duty ratio angle, high motion resolution, easy control and precise positioning.

The invention discloses a piezoelectric driving rotary table based on a spiral hinge mode conversion principle, which aims to solve the technical problems of complex structural design, low motion resolution and the like of a current micro-nano rotary table. The piezoelectric driving rotary table is composed of a rotary table, a shaft ring, a supporting cylinder, a spiral hinge base, a piezoelectric stack, a supporting cylinder connecting bolt, a driving lever mounting bolt, a driving lever and a pre-tightening screw. The deformation characteristic of the spiral hinge is utilized to convert thelinear motion of the piezoelectric stack into the rotary motion of the rotary table, so that the structural design complexity of the rotary platform is reduced, and the motion resolution of the rotary table is improved; meanwhile, the radial output force of the rotary table is increased through the lever transmission mechanism, and the output efficiency of the rotary table is improved; and the rotary table is connected with the supporting cylinder through the shaft ring, so that the load capacity of the rotary table is increased. The piezoelectric driving rotary table has the advantages of being simple in structure, high in positioning precision, large in load capacity and the like, and has good development potential and application value in the field of precision driving and positioning.

The invention discloses a device and a method for improving the motion resolution of a standing wave type piezoelectric motor. The device comprises an upper-layer driving structure and a lower-layer driving structure; the upper-layer driving structure comprises an upper-layer rotor and upper-layer piezoelectric motor groups which are symmetrically arranged on the circumferential side of the upper-layer rotor along the circle center of the upper-layer rotor; the lower-layer driving structure comprises a lower-layer rotor and lower-layer piezoelectric motor groups which are symmetrically arranged on the circumferential side of the lower-layer rotor along the circle center of the lower-layer rotor, and each of the upper-layer piezoelectric motor group and the lower-layer piezoelectric motor group comprises N piezoelectric motors; the upper layer rotor and the lower layer rotor are coaxially arranged, the upper layer rotor is driven by the upper layer piezoelectric motor group to rotate in the clockwise direction, and the lower layer rotor is driven by the lower layer piezoelectric motor group to rotate in the anticlockwise direction. According to the invention, two groups of piezoelectric motors distributed on different driving radiuses move in opposite directions to form differential displacement, so the motion resolution is improved.

The invention discloses a series-parallel coupled multi-degree-of-freedom optical element precision adjustment platform, and solves the problems that a traditional optical element adjustment platform cannot give consideration to multi-degree-of-freedom precision adjustment at the same time, and the adjustment platform is low in complexity and high in reliability. The platform comprises a supporting seat, a first-stage adjustment mechanism and a second-stage adjustment mechanism; an optical element can be driven to translate in the Z direction and rotate in the X direction and the Y direction through a first micro-nano driving assembly in the first-stage adjustment mechanism, the optical element can be driven to translate in the X direction and the Y direction through a second micro-nano driving assembly in the second-stage adjustment mechanism, and therefore multi-dimensional high-precision adjustment of the spatial position of the optical element in the optical system is achieved, and the performance index of the optical system is improved.

The invention provides a piezoelectric driven micro-positioning platform based on an hourglass displacement amplifier mechanism. The platform comprises an outer-layer support (3), the hourglass displacement amplifier mechanism, a piezoelectric ceramic actuator (2), symmetrical long arm hinges, a workbench (6) and an inner-layer substrate (7). The hourglass displacement amplifier mechanism comprises an x-direction hourglass displacement amplifier mechanism (1) and a Y-direction hourglass displacement amplifier mechanism (4). The symmetrical long arm hinges comprise x-direction symmetrical longarm hinges (5) and Y-direction symmetrical long arm hinges (8). The piezoelectric driven micro-positioning platform based on the hourglass displacement amplifier mechanism can realize large-stroke motion of the workbench. Certainly, implementation of any product or method of the invention does not necessarily require all the advantages described above to be achieved simultaneously.