53results about How to "High precision and efficiency" patented technology

The present invention provides a surface processing system for a work piece in the mechanical technical field. The system comprises at least one group of polishing units. A manipulator and several polishers with different polishing precisions are provided on the polishing units. The polishers are arranged around the manipulator in turn. The work piece could be moved by the manipulator between the processing center and the polishing units. The machined work piece is loaded by the manipulator for one time when the manipulator is located at the processing center. When the manipulator is located at the polishing units, the manipulator keeps holding the work piece and transfers the work piece in a preset sequence to each polisher corresponding to the polishing unit where the manipulator is located. The surface of work pieces having different wall thicknesses and complex surfaces could be processed in a large batch with a high efficiency.

The invention belongs to the technical field of databases and aims to establish an XML document constraint model known as a bidirectional path constraint model. Based on the model, the invention discloses a new method for calculating the similarity of XML documents. The structural information of the XML documents is extracted more completely through the bidirectional path constraint of a node, so that the similarity of the XML documents is balanced more accurately. A very mature N-Gram thought in the field of natural languages is introduced and an N-Gram-based partition mode is applied in the similarity calculation of path constraint. The extraction and operation of N-Gram information are simplified by making skillful use of positive integers and weight numbers. The method can be used in the fields of XML document classification, clustering, mode extraction and the like.

The invention belongs to the technical field of jet printing and discloses a jet code detection method. The method comprises: setting a character template; and carrying out character region partitioning, character keyword positioning, perspective transformation and solving and character defect analysis, wherein character defects comprise unqualified character width, unqualified character height, unqualified character separation distances, unqualified character angle, blurring characters and loss of the characters; a jet code comprises a keyword and a variable character. According to the method and system disclosed by the invention, the jet code detection efficiency and reliability are enhanced through efficient automatic detection method and system.

The invention provides a full-automatic FPC (flexible printed circuit) board appearance test unit and a corresponding appearance test method. The full-automatic FPC board appearance test unit includesa first appearance test device, a second appearance test device, a feeding platform, a discharging platform, a transfer system, a feeding manipulator and a discharging manipulator. The full-automaticFPC board appearance test unit has the advantages that the feeding manipulator positions and grips an FPC board on the feeding platform to the first appearance test device to carry out photographic appearance test on one side, the transfer system then turns over the FPC board tested by the first appearance test device, corrects the FPC board and transfers the FPC board to the second appearance test device so that photographic appearance test is performed on the other side, the FPC board is finally gripped and discharged to the discharging platform by the discharging manipulator, testing is automated, and testing efficiency is high.

An apparatus for checking concentricity between a barrel holder and a lens barrel rotatably engaging with the barrel holder is provided. The lens barrel includes at least one lens coaxially received therein. The apparatus includes a barrel holder retaining member, a rotating member, a driving unit, a light source, and an image sensor. The barrel holder retaining member is used for fixedly retaining the barrel holder in position. The rotating member is structured for meshing with the lens barrel. The driving unit is used for driving the rotating member to rotate, thereby rotates the lens barrel. The light source is configured for emitting light toward a first end of the lens barrel. The image sensor is arranged to face toward an opposite second end of the lens barrel. The image sensor is configured for sensing the light emitted from the light source.

A method for producing a dual-array-type scintillator array, comprising forming first and second scintillator sticks having cell portions by providing first and second scintillator substrates with pluralities of grooves and cutting them in directions perpendicular to the grooves; arranging and fixing plural sets of the first and second scintillator sticks with the cell portions downward on a support plate via spacers; removing base portions from the first and second scintillator sticks by grinding to form first and second cell arrays comprising the first and second cells each arranged in line; forming an integral resin-cured assembly by filling the grooves and gaps of the first and second cell arrays with a resin for a reflector, curing the resin, and then removing the support plate; and cutting a resin layer between the first and second cell arrays in adjacent sets to divide the resin-cured assembly to sets of the first and second cell arrays.

The invention discloses a forming method for a foam aluminum part with a complex curved face. The forming method includes that steps that S1, a stamping die is provided, and the stamping die includesa convex die, a concave die, and a heating assembly; S2, two stacked metal plates are provided, a foaming agent and a stabilizer are evenly distributed between the two metal plates, and stirring friction welding is adopted to conduct multi-pass welding treatment on the two stacked metal plates to obtain a foam aluminum prefabricated body; S3, a heating mechanism or the heating assembly using the stamping die is provided to heat and insulate the foam aluminum prefabricated body in the S2; and S4, the heated foam aluminum prefabricated body is transferred to the stamping die, die closing is carried out, the foam aluminum prefabricated body is subjected to stamping and forming, die opening is carried out, the convex die is moved to be at a distance from the concave die, and the heating assembly is started to heat the foam aluminum prefabricated body, so that the foam aluminum prefabricated body completes remaining foaming action to obtain the foam aluminum part with the complex curved face. According to the forming method for the foam aluminum part with the complex curved face, not only can any desired curved face forming parts be formed, but also the whole process has short durationand low cost.

The invention relates to a method for precisely balancing Z-axis weight in real time. The method comprises the steps that: a linear motor module drives a Z-axis movement module to move a certain distance; after the Z-axis movement module is stabilized, a grating ruler reading head reads first position data of a grating ruler and records the first position data into adjustment software, and the Z-axis movement module continues to fall; the adjustment software gives a pressure increase signal to a precision electric proportional valve, a rodless cylinder body is slowly filled with gas, and a rodless cylinder slider drives the Z-axis movement module to move up; the grating ruler reading head reads second position data of the grating ruler and compares the second position data and the first position data, and the second position data and the first position data are the same, the adjustment software reads pressure data of the precision electric proportional valve and records the pressure data when the position is stable; in the next time of equipment starting and operation, the adjustment software increases the pressure of the rodless cylinder body according to the automatically measured pressure data so as to balance gravity. According to the method, the judgment and adjustment are automatic, shutdown is not needed, and the Z-axis movement module reaches a balanced state.

The present invention provides a method and apparatus for non-contacting morphomtry of three-dimensional surface of an object such as a human body in a shorter time period and with higher precision, wherein the present non-contacting morphometry of three-dimensional surface of an object involves a plurality of measuring video heads, A_i, B_i, C_i and D_i and a controlling unit for controlling the measuring time of the measuring heads and for processing and storing the obtained data from the measurements. The present method comprises the steps of: placing the object to be measured so that one axis thereof lies along and with an imaginary central axis; placing the object to be measured so that the measuring heads are arranged on each of n (n≧1) planes intersecting the imaginary central axis where the optical axis of each measuring head faces the imaginary central axis and each annular slice of the surface of the object is covered by the sight fields of the m (m≧3) measuring heads; operating simultaneously one group of a plurality of measuring video heads, the sight field of each of which does not substantially overlap with the sight field of the other in the group, and thereafter, operating other group of a plurality of measuring video heads, the sight field of each of which does not substantially overlap with the sight field of the other in the group. The n×m sets of data thus obtained in the foregoing steps are processed to obtain three-dimensional data.

The invention discloses a time optimization method for computer-aided design layout of a digital microfluidic biochip, which comprises the following steps: establishing a model of four constraint conditions of priority constraint, resource constraint, overlap constraint and fluid constraint; establishing a target model of the total time of interlocking biochemical reactions on digital microfluidicbiochip; solving an optimal solution of the target model of the completion time according to the model of the four constraint conditions based on a Markov decision; according to the optimal solution,the realization process of the biochemical reaction on the digital microfluidic biochip being controlled. The invention can minimize the biochemical reaction time in the digital microfluidic biochip,and has the advantages of low cost, high precision and high efficiency.

The invention discloses a high-precision high-speed processing and gear-hobbing machine. The high-precision high-speed processing and gear-hobbing machine comprises a machine base, a tool rest angle regulating mechanism fixedly arranged on the machine base, a tool apron which is arranged on the tool rest angle regulating mechanism, a gear-hobbing knife which is driven by the tool apron to move, agear base which is fixedly arranged on the machine base and is driven to rotate by positioning a gear, a tail base limiting mechanism which performs concentricity limitation on rotation of the gear, and a gear automatic loading and unloading mechanism which sleeves the peripheral surface of the tail base limiting mechanism. The high-precision high-speed processing and gear-hobbing machine can realize a series of automatic operations such as automatic loading, automatic gear-hobbing knife angle regulating, automatic processing and forming and automatic unloading, is high in processing efficiency and is high in processing precision.

The invention belongs to the technical field of machining and assembling of large pipe seat structural members, and particularly relates to a full-automatic grinding mechanism achieving automatic posture adjustment based on force feedback. The full-automatic grinding mechanism achieving automatic posture adjustment based on force feedback comprises a bottom plate, an automatic grinding mechanism,a grinding linear driving mechanism, a vertical posture adjusting mechanism, a pitching posture adjusting mechanism and an adjusting supporting mechanism, wherein the automatic grinding mechanism, thegrinding linear driving mechanism, the vertical posture adjusting mechanism, the pitching posture adjusting mechanism and the adjusting supporting mechanism are arranged on the bottom plate, the grinding linear driving mechanism and an X-axis linear guide rail are arranged on the bottom plate, the automatic grinding mechanism is connected with the X-axis linear guide rail in a sliding mode and connected with the grinding linear driving mechanism, the vertical posture adjusting mechanism and the pitching posture adjusting mechanism are positioned on two sides of the adjusting supporting mechanism respectively, the pitching posture adjusting mechanism is used for adjusting the pitching angle of a workpiece, and the vertical posture adjusting mechanism is used for adjusting the horizontal position of the workpiece. The full-automatic grinding mechanism achieving automatic posture adjustment based on force feedback realizes automatic positioning, automatic high-precision posture adjustment and full-automatic high-precision grinding for grinding in the production and assembling processes of large pipe seat structural members.

The invention discloses a near-land shallow sea underwater topography inversion method, which realizes high-precision inversion of near-land shallow sea underwater topography under the support of a remote sensing theory and a deep learning technology based on a remote sensing and deep learning mode. The inversion method comprises the steps of constructing a model on the basis of a convolutional neural network, constructing a deep learning model by screening common parts of multi-source data and making samples through a series of processing, and training the model on the basis of coastal measured data and by taking a multiband remote sensing image as an input to achieve an expected effect. Physical information contained in the remote sensing image is fully considered, the mapping relation of the N * N sample window images is established on the basis of the measured data, and the limitation that a traditional water depth measurement method is time-consuming and labor-consuming and is easily influenced by actual factors is overcome. The limitation that a traditional water depth inversion algorithm needs various data such as sea surface roughness and meteorological data as supports is overcome, and the quality and the automation degree of a water depth inversion product are improved; the method is easy to implement and can be used for dynamically monitoring and improving the quality of water depth products.

The invention belongs to the technical field of aircrafts, and discloses a high-precision and high-efficiency aircraft trajectory optimization and guidance switching method and system. The high-precision and high-efficiency aircraft trajectory optimization and guidance switching system comprises a data acquisition module, a data preprocessing module, a central control module, an optimization area defining module, a trajectory optimization model building module, an initialization module, a trajectory optimization module, a guidance switching module, a data storage module and an update display module. According to the invention, the trajectory optimization module utilizes the high-precision and high-efficiency aircraft trajectory optimization model to realize optimization processing of the aircraft trajectory, so that the precision of high-precision and high-efficiency aircraft trajectory optimization is improved, and high accuracy and high agility of a high-precision and high-efficiency aircraft precise strike task are ensured. Meanwhile, a multi-mode switching guidance law conforming to the current flight environment situation is formed through a guidance switching module by adopting a nonlinear model prediction control method, and the obstacle avoidance efficiency of the high-precision and high-efficiency aircraft is improved.

An efficient algorithm for node load conversion among different engineering physical model grids utilizes different monotonous subtraction value characteristics of different negative power exponent point spacing monomials, introduces more constraint equations, improves distribution characteristics of node load conversion between different grids, establishes a distribution coefficient in combination with scatter full scanning, has no requirement for regularity of node grids, and is easy to achieve parallel computing, and the finally obtained linear equation set does not exceed six orders, thuscompleting solving the inversion calculation efficiency problem of a large equation set. Numerical examples show that the algorithm of the invention is obviously improved and enhanced in precision andefficiency compared with the existing algorithm technology. The algorithm technology provided by the invention has important application value and significance for improving node load conversion calculation among different grid models in engineering coupling problem numerical analysis.

The invention relates to the technical field of solid-liquid separation devices, in particular to an environmental engineering water quality detection solid-liquid separation device which comprises a box body, supporting legs are fixedly mounted at the bottom ends of the two sides of the box body, a water inlet pipe is fixedly mounted at the upper end of the box body, a water outlet pipe is fixedly mounted at the bottom end of the box body, and solid collection boxes are fixedly mounted on the two sides of the box body; and a connecting pipe is fixedly installed at the bottom end of the solid collection box, and the other end of the connecting pipe is fixedly installed on the two sides of the bottom of the box body. The environmental engineering water quality detection solid-liquid separation device provided by the invention realizes separation of sewage and solid pollutants thereof, avoids the phenomenon of blockage of a first filter plate caused by retention of the solid pollutants on the first filter plate, can collect and detect the separated sewage, is convenient for research and detection of researchers, is convenient to use, and is suitable for popularization and application. The detection data result is improved, and the detection accuracy and efficiency are improved.

The invention relates to the technical field of medical instruments, in particular to a pathological accurate sampling device which comprises a base, a supporting assembly, an adjusting assembly, a first cutting assembly, a second cutting assembly and a clamping assembly, wherein the supporting assembly and the adjusting assembly are arranged at the top of the base; the first cutting assembly and the second cutting assembly are slidably arranged on the adjusting assembly; and the clamping assembly is arranged under the adjusting assembly and connected with the base. Firstly, tissue blocks needing to be subjected to material taking work are clamped through the clamping assembly, then adjustment is conducted through the supporting assembly and the adjusting assembly according to the material taking specifications of the tissue blocks, and scale marks are engraved on the adjusting assembly, so that workers can conduct millimeter-level accurate adjustment by sliding the movable vertical rod and the sliding rod; then the adjusting assembly is locked through the bolt; finally, the first cutting assembly and the second cutting assembly conduct cutting in an anticlockwise or clockwise mode; and therefore, the whole process is easy to operate, the material taking precision is high, the efficiency is high, and follow-up pathological research is facilitated.

The invention discloses a silk wadding quilt cutting platform device with adjustable light intensity and scale marks. The device comprises a cutting platform, a guardrail frame, a measuring slider device, a placement space platform and a moving component, the measuring slider device comprises a measuring plate, slider wheels, a handle and clamping fixed blocks, the placement space platform is movably connected to the bottom surface of one end of the cutting platform through guide rails, the measuring slider device is arranged at the other end of the cutting platform, the peripheral surface ofthe upper portion of the cutting platform is connected with the guardrail frame through screws, the bottom ends of the surfaces on two sides in the width direction of the guardrail frame are fixedly connected with sliding guide rails, the slider wheels of the measuring slider device are connected into the middles of the sliding guide rails in a clamped manner, the measuring plate is arranged on the upper portions of the slider wheels, the handle is mounted on the surface of one side, opposite to a moving direction, of the measuring plate, and the clamping fixed blocks are connected to two sides of the slider wheels in a clamped manner when the slider wheels mounted at the bottom of the measuring plate move to needed marks on the sliding guide rails.