63results about How to "Avoid size" patented technology

The invention discloses an industrial weld defect detection method based on semantic segmentation. The method comprises the following steps: S1, obtaining an original weld image for training and related parameter information, carrying out binarization processing on the original image, storing a foreground region of the processed image, selecting a region with the maximum area to carry out rectangular shape conversion, and cutting and storing a rectangular region; s2, marking the cut rectangular region image, generating a weld defect image data set, cutting the image in the weld defect image data set by using an intelligent cutting method, and distributing redundant pixels generated by cutting; s3, constructing a semantic segmentation network model according to the data set generated in S2, focusing a defect region by using an attention mechanism, performing selective convolution calculation on the defect region, and training the semantic segmentation network model by using a loss function as an index; and S4, processing the weld seam image to be detected by using the semantic segmentation network model, and splicing and restoring the weld seam image to an original image size. According to the invention, the detection precision is improved, and image processing is not limited.

The invention discloses a cable assembling and welding control device and method, which are mainly applied to plug fixation of a J27A type electric connector. The cable welding control device is designed and manufactured, the device is provided with a connector fixing clamping groove, a wire harness fixing groove, scales and the like, and the problems that in the production process, the length of a cable is repeatedly measured, a connector is not firmly fixed, and welding is not easy are solved through application of the control device. After workshop review, the device is used in cable assembly part production, the use effect is good, and the assembling and welding efficiency of the cable is effectively improved.

The invention belongs to the technical field of preparation of barium titanate, and particularly relates to nanoscale tetragonal-phase barium titanate and a confinement preparation method thereof. The preparation method comprises the following steps: pumping a solution of barium titanium salt and a solution of a precipitator into a mixing reactor of a microchannel reactor for confinement mixing, and aging the obtained mixed slurry to obtain a barium titanate precursor; the flow velocity of the solution of the barium titanium salt and the flow velocity of the solution of the precipitant are independently 20-70 mL / min; and mixing the barium titanate precursor, a barium source and water for hydrothermal reaction to obtain the nanoscale tetragonal-phase barium titanate. The method can be used for efficiently and stably preparing the nanoscale tetragonal barium titanate which is small in size, high in crystallinity, high in particle size uniformity, narrow in particle size distribution and high in tetragonal phase purity.

The invention relates to the technical field of stainless steel thin strip machining, in particular to stainless steel thin strip cutting equipment which comprises a machine body, an unwinding mechanism, a cutting mechanism, a grinding mechanism and a collecting mechanism are arranged on the machine body, the unwinding mechanism is located at the front end of the machine body and comprises an unwinding motor and an unwinding roller, and the unwinding roller is rotationally borne on the upper surface of the machine body; the unwinding motor drives the unwinding roller to rotate, the cutting mechanism comprises a first crank-link mechanism and a cutter, a rotary disc of the first crank-link mechanism is rotationally borne above the machine body, the cutter is arranged above the machine body in a sliding mode in the vertical direction, a connecting rod of the first crank-link mechanism is hinged to the cutter, and the grinding mechanism is located at the rear end of the cutting mechanism. The grinding mechanism is used for grinding the cut edge of the stainless steel thin strip, and the collecting mechanism is located at the tail end of the machine body and used for collecting the stainless steel thin strip; the device has the advantage that the production efficiency, precision and safety of the stainless steel thin strip are improved.

The SAM-based curved component crack image drawing method comprises the steps of S1, acquiring a target curved component image; s2, segmenting the target curved component; s3, extracting the contour of the target curved component; s4, identifying a crack of the target curved component; and S5, generating a crack form graph of the target curved component. An SAM segmentation method is utilized to obtain a component edge image, a sliding non-overlapping window method is utilized to obtain a crack image, finally, the component edge image and the crack image are combined to draw an experimental beam crack image, all parameters such as image sizes are the same as those of an obtained original image, and the position in the final crack image is the original position in the original image. The method has the advantages that size changing and repositioning are avoided, manual operation in repeated experiments of a large number of experimental components is reduced, complex preparation work is not needed, one-key generation of the crack image is achieved, the problem that the efficiency of a traditional mode of manually drawing the crack image and measuring the crack width is low is solved, and the method has the advantage of being high in generalization and convenient to use and popularize.

The present invention provides a ceramic package shell and a preparation method thereof. The ceramic package shell comprises a ceramic body, a sealing surface pad arranged on the sealing surface of the ceramic body and a back surface pad arranged on the back surface of the ceramic body, a groove having one end connected to the sealing surface and the other end connected to the back surface is arranged on the side of the ceramic body, a side pad having one end connected to the sealing surface pad and the other end connected to the back surface pad is arranged on the inner wall of the groove, and a solder resist layer is arranged on the side pad. The present invention can prevent solder from flowing along the side pad to the side of the shell by arranging a solder resist layer on the side pad, avoids the arrangement of a front solder resist layer, and further avoids the problem of an increase in the size of the ceramic package shell and a decrease in the size of the sealing area due to the front solder resist layer.

The utility model discloses a vertical quenching machine tool, which relates to the technical field of vertical quenching appliances and comprises a base and a support frame mounted on the base, a heating mechanism is mounted in the base, a cooling mechanism is mounted at the bottom end of the support frame, a positioning mechanism is mounted at the top end of the support frame, and a chain matched with the positioning mechanism is mounted on the support frame; through the matching of the positioning mechanism and the moving assembly, the height of the positioning drill bit and the position of the heating ring can be conveniently changed, so that the quenching device can adapt to machined parts of different specifications, the quenching is relatively uniform, and the product quality is improved; through the cooperation of a pipeline and a second lead screw which are independently arranged, the cooling position and the cooling efficiency can be accurately positioned according to the quenching requirement, so that the machining precision is improved, and the problems of dimensional deviation and deformation are avoided; and finally, the problems that an existing device cannot adapt to machined parts of different specifications and the cooling precision is limited, so that the quenched machined parts have size deviation and deformation are solved.

This utility model discloses an aluminum profile production mold with a buffer structure, relating to the field of aluminum profile production technology. The utility model includes a worktable, on which a buffer mechanism and a demolding mechanism are provided. The buffer mechanism includes a connecting plate disposed at the bottom of the worktable. Two fixing blocks are fixedly connected to the left side of the connecting plate, and a sliding rod is fixedly connected between the two fixing blocks. Two sliders are slidably connected to the sliding rod, and spring sheets are fixedly connected to the sides of the two sliders that are furthest from each other. This utility model, by setting up a buffer mechanism, solves the problem that existing aluminum profile production molds are not convenient for buffering the force when merging two molds. The large impact force during merging can damage the mold and its cavity, thus affecting the mold's accuracy and causing deviations in the shape and size of the formed aluminum profile.

The present application relates to the technical field of air pipe aluminum skin processing, in particular to a mobile air pipe external thermal insulation aluminum skin folding tool, which comprises two "U"-shaped mounting racks, a lifting drive shaft is rotatably mounted on one side of each mounting rack opposite to each other, an "L"-shaped right-angle plate is liftingly mounted on the bottom of the lifting drive shaft, and a "U"-shaped folding steel plate is rotatably arranged on the bottom of the right-angle plate. The present application can position the aluminum skin through the setting of the folding ruler and the positioning block, can make the folding of the aluminum skin accurate in size, can effectively and accurately position the aluminum skin through the folding ruler, can obtain the aluminum skin more suitable for actual application according to the different requirements of the aluminum skin at different construction sites, can avoid the situation that the aluminum skin is too large or too small, and need not secondary processing, thereby greatly improving the installation efficiency of the air pipe external thermal insulation aluminum skin.

The present application relates to the technical field of high polymer material, and particularly relates to a kind of nanoparticle alkali-resistant hydrophobic modifier.The nanoparticle alkali-resistant hydrophobic modifier is composed of 25-55 parts of skeleton resin, 15-45 parts of anchoring agent, 1-10 parts of reinforcing agent and 100-300 parts of solvent.The present application uses perfluoropolymer system, so that the modifier is resistant to temperature of 400 DEG C or above and strong alkali corrosion;After sintering, it forms homogeneous and firm combination with PTFE matrix, solving the problem of interface peeling.The modifier is particularly suitable for preparing sealing gasket for alkaline electrolytic cell in high-salt and high-humidity environment at sea, significantly improving the dimensional stability and service life of the gasket.

This utility model discloses a miniature ball bearing for a cooling fan, comprising an outer ring, an inner ring, a cage, a dust cover, and rolling elements movably disposed between the outer and inner rings. Both the inner and outer peripheral walls of the outer ring and the inner ring have circumferentially formed grooves for the rolling elements to move. Both ends of the inner peripheral wall of the outer ring have circumferentially formed stepped grooves for installing the dust cover. The connections between the grooves of the inner ring and the outer peripheral wall of the inner ring, and between the grooves of the outer ring and the inner peripheral wall of the outer ring, have chamfered edges. A retaining spring is provided in the stepped groove for an interference fit with the stepped groove. The inner wall of the retaining spring abuts against the outer wall of the dust cover, while the outer peripheral wall of the dust cover has a clearance fit with the inner peripheral wall of the stepped groove. The curvature coefficient of the grooves of the outer ring is greater than that of the grooves of the inner ring. This utility model solves the problems of traditional miniature ball bearings, such as increased bearing ellipticity due to dust cover installation leading to out-of-tolerance bearing ellipticity, and assembly damage during rolling element installation leading to unqualified rolling element vibration during bearing operation.

The invention belongs to the technical field of solid-state batteries, and discloses a solid-state battery and a manufacturing method of the solid-state battery, the solid-state battery comprises a pole piece and a solid-state electrolyte, the pole piece comprises a pole piece body and a tab, the surface of the tab is coated with a reinforcing layer, and the reinforcing layer at least covers the joint of the pole piece body and the tab. And the ratio of the size of the reinforcing layer along the first direction to the size of the tab along the first direction is 0.2-1.2. According to the solid-state battery, the phenomenon of brittle failure of the tabs under relatively high pressure can be well avoided.

This invention discloses a method for controlling porosity and shrinkage cavities in large-size equiaxed crystal high-temperature alloy castings, belonging to the field of investment casting technology. The method includes: (1) wrapping the large-size casting shell with asbestos, then placing the asbestos-wrapped shell into a sand box, wherein the sand box is modified according to the asbestos-wrapping molding process of the casting; (2) smoothly loading the sand box containing the shell into a muffle furnace for shell pre-firing; (3) using a shell transfer cart to transfer the shell to the ingot mold chamber of a vacuum smelting equipment for smelting, and then casting to obtain a large-size equiaxed crystal high-temperature alloy casting. This method reduces or eliminates the tendency to form porosity and shrinkage cavities by controlling the temperature field of the sand box and the shell transfer time.

The invention relates to the technical field of roadbed detection equipment, and discloses a fly ash roadbed compactness detection device which comprises a pulling vehicle, a supporting frame is arranged on the pulling vehicle, a driving mechanism and a detection mechanism are arranged on the supporting frame, and the detection mechanism comprises a connecting frame, a plurality of lifting mechanisms, a sand measuring mechanism, a cleaning mechanism, a pit digging mechanism, a collecting mechanism and a base plate. The lifting mechanism comprises a vertical frame and a lifting table, the driving mechanism drives the detection mechanism to rotate, the sand measuring mechanism discharges and weighs standard sand, the cleaning mechanism cleans a roadbed, the pit digging mechanism digs pits in the roadbed, the collecting mechanism collects the standard sand in roadbed holes after detection, and the base plate positions the roadbed detection position. The coal ash roadbed compaction degree detection device realizes standardization, precision and high efficiency of coal ash roadbed compaction degree detection, the whole process of the device replaces manual operation by machinery, the problems of hole wall collapse, sand scattering, impurity residue and the like are effectively avoided, and the labor intensity of detection personnel is greatly reduced.

The utility model discloses a mother alloy casting mould, including lower mould fixing plate and upper mould fixing plate, the upper mould fixing plate is provided with a pair of upper detachable mould, the surface of upper detachable mould is provided with upper forming groove, the upper mould fixing plate is provided with upper connecting groove, the upper connecting groove is arranged between the two upper detachable mould, and the lower mould fixing plate is provided with lower connecting groove. The upper detachable mold and the lower detachable mold can be directly detached and replaced when mother alloy products of different specifications and shapes need to be produced, and the upper detachable mold and the lower detachable mold can be directly detached and replaced in the casting operation, so that the production efficiency is greatly improved, and the production cost is reduced. A complete and coherent casting channel is formed by the liquid injection opening, the upper connecting groove, the injection opening, the upper forming groove and the lower forming groove, the top of the push rod is arranged in the lower connecting groove, redundant components can be taken out by pushing the push rod after cooling in a communicating pipeline, and accurate guiding is achieved through cooperation of the positioning sleeve and the positioning column in the mold closing process.

This utility model discloses a cutting device for leather production, relating to the technical field of leather production equipment. It includes a conveyor table, with a cutting seat welded and fixed at the middle of the upper surface of the conveyor table. A lifting plate is installed inside the cutting seat, and the lifting plate slides and limits the movement within the inner cavity of the cutting seat. A cutter is installed at the bottom of the lifting plate and is fixed to the lifting plate by bolts. A notch is provided at the top of the lifting plate. A support plate is welded and fixed to the rear side of the top of the cutting seat. A reduction motor is fixedly installed above the support plate, and an eccentric wheel is installed on the output shaft of the reduction motor. Leather guide seats are provided at both the front and rear ends of the conveyor table. The front leather guide seat moves the rolled leather towards the cutting position of the cutting seat, while the rear leather guide seat removes the cut leather belt from the conveyor table. This solves the problem of continuous cutting while ensuring cutting accuracy.

The utility model relates to water pump flange plate machining technical field discloses a quick die change anchor clamps structure of water pump flange plate for numerical control milling machine, including clamping subassembly, clamping subassembly is used for to water pump flange plate clamping, clamping subassembly includes base, clamping block, operation platform and feeding block, and the fixed connection between base and operation platform, clamping block symmetrical setting is on base, and each clamping block is with base sliding connection, and the abutting wheel is roller and with the installation frame rotation connection and realizes that the water pump flange plate of different sizes can be sent to the middle part of clamping block, and the water pump flange plate is continuously pushed to the middle part of clamping block, and the edge of water pump flange plate is contacted closely through friction block, is closely contacted through friction force to the water pump flange plate and carries out the close clamping, the position of water pump flange plate is limited, ensures the water pump flange plate position fixed in processing, avoids the problem of processing position deviation.

The invention relates to an AIE material for marking rabies virus as well as a preparation method and application of the AIE material, and belongs to the technical field of intracellular visualization after virus infection and virus infection mechanism research. In order to obtain an AIE material capable of being used for marking rabies virus and further realize real-time visual tracking after virus infection, an alkynyl group is artificially introduced on the AIE material TPE-BP-cho through a chemical synthesis method, so that the AIE material has the capability of carrying out click reaction with amino groups. The RABV can be simply and quickly marked by using the modified AIE material, and the marked RABV not only has excellent properties of the AIE material, but also has good infection ability; and in combination with a confocal microscope, real-time tracking can be carried out in living cells after virus infection is marked, RABV intracellular transport activity can be analyzed through statistical algorithm analysis, and a good tool is provided for virus pathogenic mechanism research and antiviral drug screening.

This invention discloses an X-band synthetic aperture radar waveguide bandpass filter and radar, relating to the field of waveguide bandpass filter technology. In the waveguide bandpass filter of this invention, along the signal transmission direction, a standard rectangular waveguide WR-90 input structure, multiple resonant cavities, and a standard rectangular waveguide WR-90 output structure are connected sequentially. The standard rectangular waveguide WR-90 input structure is connected to the first resonant cavity through a coupling window, adjacent resonant cavities are connected through a coupling window, and the last resonant cavity is connected to the standard rectangular waveguide WR-90 output structure through a coupling window. Each resonant cavity is provided with a stub, and all stubs generate a transmission zero at the same frequency outside the passband. This invention takes into account the comprehensive performance requirements of miniaturized structure, wide operating bandwidth, and steep passband edge.

The present invention discloses a manipulator pneumatic welding tool, comprising a fixed base, a limit frame fixedly connected to the top of the fixed base, a loading rack fixedly connected to the top of the limit frame, an inner cavity of the loading rack slidably connected to a sliding member through a sliding groove, a plurality of limit plates fixedly connected to one side of the sliding member through a connecting frame, a plurality of limit plates separating the sliding member from a placement groove, and the present invention relates to the field of welding tool technology. The manipulator pneumatic welding tool, when loading, only needs to place the workpiece on the top of the sliding member, and it can be automatically positioned through the unloading channel, and there is no need to stop and wait, and unloading and loading are carried out simultaneously, and no additional power source is required, which not only improves processing efficiency but also reduces energy consumption.

The utility model discloses a hub bearing clearance detection device, and belongs to the technical field of hub bearings. A hub bearing clearance detection device comprises a workbench, a measuring meter, a control assembly, a positioning plate, an air cylinder and a pressing assembly. The control assembly is fixedly installed on the upper end face of the workbench, the output end of the control assembly is fixedly connected with the positioning plate and drives the positioning plate to move oppositely, the positioning plate abuts against the hub bearing inner ring for positioning, the air cylinder is fixedly installed on the upper end face of the workbench, and the output end of the air cylinder drives the pressing assembly to abut against the hub bearing inner ring for pressing. The measuring meter is installed on the upper end face of the workbench, and the measuring section of the measuring meter abuts against the hub bearing outer ring for measurement. The control assembly is arranged and can drive the positioning plates to move oppositely, so that the distance between the positioning plates is adjusted, bearings of different sizes can be installed and positioned through the positioning plates, the problems of size inconsistency and interference are avoided, and the air cylinder is matched to drive the pressing assembly to achieve the purpose of pressing the bearings.

This invention discloses a method for manufacturing a reinforcing plate, comprising the following steps: Step S1: providing an adhesive layer, and using laser cutting to cut a first alignment structure and a hollow window on the adhesive layer; Step S2: providing a reinforcing substrate, processing a second alignment structure on the reinforcing substrate, aligning the second alignment structure with the first alignment structure, so that the adhesive layer and the reinforcing substrate are bonded together to form a composite; Step S3: using laser cutting to cut the composite along a contour cutting path to obtain the reinforcing plate; the reinforcing plate includes a main seat and a handle, the thickness of the main seat being greater than the thickness of the handle; the contour cutting path is loop-shaped and includes a first cutting line and a second cutting line. The process of this invention is simple and quick, saving time, improving manufacturing efficiency, and improving the quality of the reinforcing plate, making it particularly suitable for mass production and facilitating widespread adoption.

The utility model relates to the technical field of electronic control devices, and relates to a mounting seat and a relay. The mounting seat comprises a base and an isolation plate group which are integrally formed, the base is provided with a first mounting groove and a second mounting groove, the first mounting groove is used for mounting a yoke and a permanent magnet, and the second mounting groove is used for mounting a coil; the separation plate group comprises a first separation plate, the first mounting groove and the second mounting groove are separated through the first separation plate, and an opening of the first mounting groove and an opening of the second mounting groove are located in the two opposite sides of the base in the first direction; the base is also provided with a third mounting groove for mounting the contact part, and the third mounting groove is formed in at least one side of the second mounting groove along the second direction; the separation plate set further comprises a second separation plate, and the second separation plate is located between the third installation groove and the second installation groove so as to separate the second installation groove from the third installation groove. The mounting seat is of an integrated structure, so that the number of parts can be reduced, assembling procedures are saved, the assembling difficulty of the relay is reduced, and the assembling efficiency and the assembling effect are improved.

The application relates to the technical field of rubber manufacturing extrusion equipment, in particular to a nano-reinforced rubber connecting piece preparation device and method, which comprises a bottom support plate, a motor frame is fixedly connected to the right side of the bottom support plate, a motor is fixedly connected to the right side of the inner wall of the motor frame, an output shaft is fixedly connected to the output end of the motor, and an output fixing frame is fixedly connected to the top of the motor frame; the cooling mechanism is arranged, the nano-reinforced rubber is effectively prevented from being scorched or losing stability in size due to overheating, the adjusting mechanism is arranged to avoid insufficient cooling or excessive cooling, the reinforcing mechanism is arranged to significantly improve heat exchange efficiency, form secondary flow speed self-adaptive adjustment, and further strengthen the cooling capacity of an extrusion port, ensure the uniformity and stability of rubber connecting piece setting, the stable sleeve plate is arranged to ensure the smooth operation of turbine blades in the return flow pipe, thereby prolonging the service life of the reinforcing mechanism and reducing maintenance cost.

The invention relates to the technical field of textile fiber processing, in particular to a finishing method for improving the fastness of a composite elastic fiber fabric. The finishing method comprises a shrinking process, a presetting process, a dyeing process and a reduction washing process which are performed in sequence, and the reduction washing process comprises acid reduction washing and alkaline reduction washing which are performed in sequence. According to the finishing method, the problems of size change, non-uniform dyeing and the like during fiber dyeing are solved through a shrinking process and a preset process. After dyeing, sequentially carrying out acid reduction washing and alkaline reduction washing so as to control the color depth and fastness of the dyed fiber.

The application relates to the technical field of numerical control machining, and discloses a metal part cutting machining method and system based on path planning, which comprises the following steps: fusing and calculating the cutting removal amount requirement and the surface geometric characteristics of a metal part, laying nodes on the metal part according to a density field obtained through calculation; constructing a topological connection scheme, analyzing the thermal cumulative effect of the topological connection scheme, selecting a target topological connection scheme, and outputting an initial tool path trajectory; planning the initial tool path trajectory by taking a residual stress direction field as a conditional constraint, adjusting the direction of the initial tool path trajectory according to a feeding direction; judging the feasibility of the tool path trajectory after direction optimization, correcting the tool path trajectory according to a judgment result, and outputting a final planning path. The application can realize the collaborative optimization of machining efficiency and machining precision, and effectively suppresses the machining deformation caused by cutting thermal accumulation and residual stress.

The invention relates to the technical field of alloy treatment, and discloses a low-temperature forging and rolling process for a high-performance frog, which comprises the following specific steps: step 1, material heating: selecting high-strength alloy steel as a raw material of the frog, and heating the high-strength alloy steel to 650-800 DEG C to ensure that the plasticity and toughness of the material are suitable for forging; 2, preliminary forging is conducted, specifically, the heated material is subjected to preliminary forging, the material is forged into the preliminary shape of the frog through a die forging technology, and the basic size and shape are ensured; by gradually reducing the gap between the rollers, the frog obtains higher precision and uniform deformation in the rolling process, and the method is beneficial to ensuring the consistency and repeatability of each rolling stage, so that the consistency and quality of a final product are improved; by adopting the mode of gradually reducing the gap between the rollers, the internal stress generated by the frog in the rolling process can be effectively reduced, the mechanical property of a final product is optimized by uniformly applying pressure, and the possible stress concentration problem is reduced.

The invention discloses an underwater image enhancement method and system based on a generative adversarial network, and electronic equipment. The method comprises the following steps: acquiring an underwater image data set and a land image data set; determining a training set according to the underwater image data set and the land image data set; constructing a multi-scale parallel encoder comprising a plurality of branches, and constructing a multi-scale fusion decoder comprising a multi-scale feature dense fusion module; an underwater image enhancement model based on the generative adversarial network is constructed, the underwater image enhancement model comprises two generators and two discriminators, and each generator is constructed based on a multi-scale parallel encoder and a multi-scale fusion decoder; and training an underwater image enhancement model based on the generative adversarial network by using the training set to obtain a trained underwater image enhancement model, so as to enhance the underwater image to be enhanced by using the trained underwater image enhancement model. According to the invention, the image enhancement effect can be improved, and the image enhancement accuracy is improved.

The utility model provides a kind of high-precision positioning mechanism of aluminium alloy die-casting die with insert, belong to mould technical field.It includes lower mould plate, the lower mould plate is provided with two installation annular iron insert's forming cavity, the lower mould plate is provided with high-precision positioning assembly corresponding with annular iron insert, the lower mould plate is also equipped with wind-water cooling combined type cooling runner structure.High-precision positioning assembly can be accurately positioned annular iron insert by being set, improve insert installation precision, avoid die-casting size out-of-tolerance and combination bad;With wind-water cooling combined type cooling runner structure, the speed of expansion and contraction of aluminium iron can be comprehensively prevented insert skin aluminium shell fracture, guarantee product performance and reliability.