18results about How to "High precision requirements" patented technology

This utility model provides a modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies, belonging to the technical field of fixture mechanisms. This modular tooling fixture mechanism for machining triple eccentric butterfly valve bodies includes a floating clamping module and a quick-change flange positioning base plate. The floating clamping module is disposed above the quick-change flange positioning base plate and is used to float and clamp the triple eccentric butterfly valve body placed on the quick-change flange positioning base plate. The quick-change flange positioning base plate is used to position the triple eccentric butterfly valve body and realize overall transfer between multiple processes. The floating clamping module includes a main frame and a pneumatic auxiliary locking assembly. The main frame adopts a three-way eccentric adjustment mechanism, which has a built-in adjustable wedge block, and the adjustable wedge block is connected to a screw. This solves the problems of eccentric deformation, cumulative positioning errors in multiple processes, and poor tooling versatility in the machining of triple eccentric butterfly valve bodies, eliminates repeated clamping errors, and improves accuracy and efficiency.

The utility model discloses an exposure scanning shaft drive mechanism, exposure scanning shaft drive mechanism adopts the mode of linear motor module drive, eliminates mechanical transmission gap, improves the scanning speed of exposure scanning shaft, improves the positioning accuracy of vertical exposure equipment, satisfies the high accuracy requirement of exposure machine field. The counterweight of the present application is connected with the mounting base, and the counterweight offsets the weight of the lens module, which can reduce the driving force when the linear motor module is driven, so that the exposure scanning shaft drive mechanism is suitable for heavy load occasions. At the same time, the problem of the lens module falling due to its own weight after the linear motor module is powered off can be avoided, and the adaptability of the exposure scanning shaft drive mechanism is improved. In addition, the exposure scanning shaft drive mechanism of the present application has simple and reliable structure, low noise and low wear, which greatly reduces the maintenance cost in the later period.

This utility model relates to the field of pipe fitting elbow adjustment technology, specifically a steel pipe fitting elbow angle adjustment device, including a base. Mounting plates are fixedly connected to both the front and rear ends of the base. A rotating assembly is installed inside the base, comprising a first motor fixedly mounted on the right side of the base. A worm gear is fixedly connected to the rotating shaft of the first motor, and the left side of the worm gear is engaged in a first fixed sleeve. A second fixed sleeve is fixedly connected to the lower middle position inside the base, and a rotating rod is inserted into the upper end of the second fixed sleeve. A worm wheel is sleeved on the rotating rod. The meshing transmission ratio of the worm and worm wheel is large, converting the high-speed rotation of the first motor into low-speed, high-precision rotation of the rotating rod, meeting the high-precision requirements of aerospace, nuclear power, and other industries. The self-locking characteristics of the worm wheel and worm gear ensure that the angle will not shift due to external force after the machine stops, improving stability.

The utility model relates to light source detection technical field, and disclose a kind of optical fiber sleeve pipe suitable for multiple cold light source detection, including the sleeve pipe body of standard single optical fiber end portion, and the sleeve pipe body one end is equipped with driving element, and the other end outer wall of sleeve pipe body has the multiple outer expansion pieces of circumferential uniform distribution, and outer expansion piece has the movable end connected with driving element, and multiple outer expansion pieces are synchronously moved radially by driving element driving, to adjust overall diameter to adapt multiple diameter light outlet hole. The utility model is through the synergic effect of driving element and outer expansion piece, realize diameter flexible adjustment: driving element drives multiple outer expansion pieces synchronously moves radially, and small diameter light outlet hole can be adapted under non-expansion state, and after expansion, maximum diameter is greatly improved compared with initial state, can cover the light outlet hole specification of mainstream cold light source equipment, and single sleeve pipe can replace multiple conventional custom sleeve pipe, without waiting for customization before detection, to improve test efficiency, reduce custom cost.

The application discloses a kind of suitable for six-roller cold continuous rolling mill non-oriented silicon steel transverse thickness difference control method, belong to cold-rolled plate rolling technical field.The method includes: design optimization six-roller cold continuous rolling mill S1-S3 rack's edge drop control work roll new roll shape curve;Build cold continuous rolling mill finite element simulation model and verify;Through finite element model simulation analysis edge drop control work roll shape under the influence law of rolling process parameters to transverse thickness difference;With the shape control characteristics of edge drop control work roll shape, propose six-roller cold continuous rolling mill work roll and intermediate roll bending force control strategy.The application can effectively reduce non-oriented silicon steel transverse thickness difference by work roll shape optimization and bending force collaborative control, improve cold-rolled silicon steel product quality and production stability, suitable for six-roller cold continuous rolling mill non-oriented silicon steel batch production.

The utility model relates to the field of curing agent production discloses a kind of feeding metering device for curing agent production, it include: fixing agent raw material bucket, feeding metering mechanism is arranged on the fixing agent raw material bucket;The feeding metering mechanism includes measuring cylinder, blanking pipe, solenoid valve, side plate, connecting frame, connecting rod, threaded cylinder, hollow connecting ring and suction tube;The blanking pipe is fixedly installed at the bottom of fixing agent raw material bucket, the solenoid valve is installed on blanking pipe, the side plate is fixedly installed on the outside of blanking pipe, the threaded cylinder is screwthreaded installation on the outside of blanking pipe, the connecting frame is fixedly connected with threaded cylinder, outer ring is fixedly provided on the connecting frame, the connecting rod is vertically slidingly installed on side plate, two baffle discs are fixedly sleeved on the outside of connecting rod, and the connecting rod bottom is fixedly connected with hollow connecting ring.The utility model has the following advantages and effects: accurate feeding metering processing can be carried out, and the accuracy of measurement is guaranteed.

This invention relates to the field of resistor technology, specifically to a high power density power resistor with a wide resistance range. It includes a housing and multiple resistor units stacked within the housing. Each resistor unit includes an insulating support substrate and a resistor sheet encased within the support substrate. The resistor sheet has conductive portions bent at both ends, extending to the outer surface of the support substrate. Adjacent resistor units are connected via these conductive portions. An air duct is provided between the support substrates of adjacent resistor units. The high power density allows the resistor unit spacing to be adjusted within any range based on the thickness of the support substrate, enabling forced air cooling heat exchange and minimizing the volume to the theoretical minimum. It also offers higher protection levels and corrosion resistance, achieving high levels of waterproofing and dustproofing; and meets the high requirements for large creepage distances and clearances even under high voltage conditions.

The application provides a photocurable bio-based flame-retardant resin and a preparation method thereof, and belongs to the technical field of bio-based polymer flame-retardant materials. Palm oil and phytic acid are used as raw materials to prepare palm oil-based methacrylate and phytic acid-based methacrylate monomers, respectively. The palm oil-based methacrylate and the phytic acid-based methacrylate are mixed with a photoinitiator through one-pot blending. The preparation method is simple and fast, the obtained bio-based resin is environment-friendly, and a three-dimensional structure material of the environment-friendly bio-based flame-retardant resin can be prepared through ultraviolet light curing by using ultraviolet light 3D printing technology. The bio-based flame-retardant resin has excellent mechanical strength, good deformability and high efficient flame retardancy, is also suitable for photocuring 3D printing, and can solve the technical bottlenecks of insufficient mechanical properties, low anti-deformation capacity and flammability of traditional vegetable oil-based resins.

The application discloses a kind of vehicle target speed variation measurement method and system based on millimeter wave radar, it is related to digital signal processing technical field.The method includes: step one: generating LFMCW signal;Step two, signal transmission is carried out by wireless transceiver unit;Step three: obtain intermediate frequency signal;Step four: extract slow time signal sequence;Step five: measure vehicle target speed variation.System includes signal generation unit, wireless transceiver unit, signal dechirp unit, signal correction unit, speed variation measurement unit.The application realizes the high-precision, real-time measurement of the speed variation of preceding vehicle, fuses the speed variation of vehicle in front and other information and decision-making, and further helps driver or automatic driving system to take necessary and reasonable measures, improves driving safety.

The utility model relates to mechanical processing technical field, concretely is a kind of universal angle lathe tool extension tool holder, including fixed seat and adjusting base, fixed seat is by the lathe tool holder connecting portion for being connected with lathe tool holder and the adjusting base connecting portion for being connected with adjusting base is composed, adjusting base is rotatably installed on adjusting base connecting portion, rotating drive device for driving adjusting base to rotate to adjust angle and locking device for locking adjusting base on adjusting base connecting portion after adjusting angle are provided on adjusting base connecting portion, lathe tool is fixedly installed in the bottom of adjusting base. The universal angle lathe tool extension tool holder effectively solves the problem of traditional lathe tool holder in angle adjustment efficiency, angle adjustment accuracy, stability, convenience and universality etc., provides powerful support for the high-precision, high-efficiency processing of complex parts in new energy automobile, aerospace and other fields.

This invention provides a method for predicting mapping relationships of medical data fields based on world model learning, belonging to the field of model prediction technology. The method includes acquiring a medical data object containing a source field set and a target field set, performing causal state configuration based on a generative world model to generate intermediate world states, performing alignment inference, and combining consistency policy constraints to generate mapping relationship prediction results. Simultaneously, it utilizes backfilling feedback information for closed-loop optimization. This invention improves the accuracy and interpretability of medical data field mapping and reduces the mapping error rate.

The surgical assistive robot and control method based on a continuum configuration described in this invention belong to the field of surgical assistive equipment technology. It includes a support mechanism, a motion positioning mechanism, a mounting mechanism, and a mechanical execution mechanism. The support mechanism consists of a horizontal support frame, a vertical support frame, and an inverted T-shaped frame. The motion positioning mechanism includes a gimbal and a sliding table mechanism. The mounting mechanism utilizes a hydraulic telescopic device I and a rotary motor I to flexibly adjust the height and rotation angle of the upper and lower fixed platforms. The mechanical execution mechanism, through a rotary motor II, drive motor I, drive motor II, drive motor III, and an adjusting motor, achieves precise adjustment of the extension and end-effector posture of the movable upper and lower arms. The control method includes positioning initialization, mounting mechanism adjustment, mechanical execution mechanism deployment, execution device fine-tuning, surgical operation execution, and dynamic feedback and correction, achieving high precision and flexibility in operation and effectively overcoming the difficulties in master-slave hand mapping and the limitations on surgical flexibility.

The utility model relates to the technical field of railway vehicle manufacturing and maintenance equipment, in particular to bogie frame turnover equipment with a positioning function, which comprises a support frame, a height adjusting device, a position adjusting device, a clamping device, a turnover device, a positioning device and a control system. Fixing bases are installed in the supporting frame through the two height adjusting devices and the position adjusting device, rotating discs are installed on the two fixing bases through the overturning devices, the clamping devices are installed on the side walls of the rotating discs, the position of a framework is preliminarily detected through a visual recognition system, namely a camera, and the clamping devices are installed on the side walls of the rotating discs. The control system adjusts the distance between the two sets of laser range finders according to deviation information, the position of the framework is further accurately positioned, light beams emitted by the laser range finders are used for auxiliary calibration, it is ensured that the deviation of the framework in the horizontal direction and the vertical direction is controlled within + / -1 mm, and in the overturning process, the positioning device continuously monitors the position of the framework, and the positioning accuracy is improved. And the stability is always kept.

This invention provides a method and system for assembling battery cell connection components, belonging to the field of electrical component manufacturing technology. The method includes the following steps: obtaining an initial feature dataset for each contact point in the battery cell connection component to be crimped; generating differentiated crimping parameters for each contact point based on the initial feature dataset and a mapping model; performing crimping on each contact point according to the differentiated crimping parameters, and collecting the dynamic contact resistance of the contact point in real time; calculating the relative deviation between the dynamic contact resistance and the target contact resistance; calculating and correcting the crimping force and crimping stroke in real time based on the relative deviation to obtain the crimped battery cell connection component; verifying the contact characteristics of the contact points in the crimped battery cell connection component, and outputting a qualified crimped battery cell connection component. This method can optimize the assembly process of battery cell connection components and improve the interfacial bonding stability and long-term reliability of the contact points of the battery cell connection component.

This utility model provides a clamping fixture for machining tubular parts, belonging to the field of parts machining technology. It includes a base, a supporting recess on the top of the base, a positioning sleeve rod passing through the center of the supporting recess, a circular pressure plate passing through the positioning sleeve rod on the inner side of the supporting recess, a hexagonal head bolt threaded to the upper end of the positioning sleeve rod, a positioning shaft passing through the supporting recess, a locking screw on the top of the supporting recess, and a support bolt threaded to the top of the base. This utility model, by selecting a clamping fixture corresponding to the specifications of thin-walled long cylindrical parts, mounts the thin-walled long cylindrical parts onto the positioning sleeve rod through radial stepped holes, installs the circular pressure plate, and locks it with hexagonal head bolts. The positioning shaft is inserted into the through holes on both sides of the base and secured with locking screws. The support bolts gently support the part. This specialized fixture allows for the machining of a set of radial stepped holes in a single clamping operation, easily ensuring the coaxiality and positional accuracy requirements of the stepped holes, offering good economy and meeting high precision requirements.

The present application relates to a kind of garlic seed sprout tip image recognition methods, including guide seed box, photoelectric sensor, camera and light supplement lamp are respectively equipped on the side wall of guide seed box, photoelectric sensor and camera are respectively connected with industrial computer, and industrial computer is used to run trained network model;Directional pivot is equipped in the center of the end of guide seed box, directional guide plate is equipped on directional pivot, rudder is equipped below directional pivot, rudder is connected with industrial computer, the lower end of guide seed box two sides is respectively equipped with the arc-shaped channel that expands outward, and arc-shaped channel lower end is equipped with import channel.Photoelectric sensor detects whether there is to take seed spoon to pass, camera is photographed and obtains garlic seed image, network model identifies the output scale bud direction of garlic seed image, adjust garlic scale bud direction by controlling rudder and directional guide plate, ensure that garlic seed falls into directional duckbill with scale bud upward posture, with reasonable design, scale bud directional precision, scale bud directional efficiency is high, and the advantages such as high right bud rate.

The invention relates to an irradiation plan optimization method based on novel sparse sampling, belongs to the technical field of radiation irradiation dose optimization, and solves the problems that invalid voxel data volume cannot be effectively simplified, the processing data volume is large and the result is not accurate enough in the prior art. Receiving an initial irradiation plan and generating a full dose deposition matrix corresponding to each radiation field; constructing a gradient image based on the full dose deposition matrix; performing dual-condition voxel screening on the constructed gradient image to obtain a final sampling voxel set, and constructing a sparse dose deposition matrix; and performing irradiation plan optimization and dose normalization on the sparse dose deposition matrix to obtain an optimized irradiation plan.

This invention discloses a method for processing giant bridge tower piers, comprising the following steps: a pre-processing stage, establishing a three-dimensional solid BIM model, determining the dimensional parameters and assembly relationships of each component, and generating a visual processing flowchart and parameter table; a longitudinal rib segmentation stage, determining the segment length of the longitudinal ribs based on the spacing of the transverse diaphragms, ensuring that the length of a single longitudinal rib segment does not exceed four transverse diaphragm spacings and does not exceed 4m; a longitudinal rib curling stage, simulating the theoretical height loss of the longitudinal ribs after segmentation using the BIM model, and performing curling processing on longitudinal ribs with a height loss greater than 100mm after segmentation; a general assembly jig stage; an assembly stage, dividing the giant tower pier into multiple layers, assembling the giant tower pier symmetrically from the inside out; and a multi-segment pre-assembly and positioning matching stage. This invention enables high-precision, high-efficiency, and high-quality processing of tower pier components.