57results about How to "Improve manufacturing precision" patented technology

The invention relates to a pre-assembly-free steel pipe truss arch parallel connection manufacturing process. The manufacturing process is characterized by comprising the following specific manufacturing processes: S1, projection of steel pipe arch units; s2, arranging a jig frame; s3, steel pipe welding; s4, welding the joint plate; s5, steel pipe arch parallel connection manufacturing; by means of the manufacturing process, a large amount of site occupied by pre-assembly can be omitted, and the production operation efficiency is improved; the labor cost required by the assembly process and the disassembly after the assembly is completed is saved; the material cost required by pre-assembly is saved, the welding finishing cost is saved through welding deformation control, and the manufacturing precision of the steel pipe arch is improved; and a special jig frame structure and a special welding platform structure are adopted, so that the construction efficiency can be effectively improved.

The invention provides a shaver head with a modular combined floating knife net and a shaver, the shaver head with the modular combined floating knife net comprises the modular combined knife net, the modular combined knife net is formed by connecting and assembling a plurality of mesh modules and a plurality of functional modules, each mesh module and each functional module can float or tilt under stress, and the modular combined knife net is arranged on the modular combined knife net. The mesh modules or function modules on the inner side can float or tilt along with the adjacent mesh modules or function modules on the outer side after being stressed, and each mesh module is provided with a movable cutter set. According to the modular design, mesh modules with different thicknesses and different groove types are formed, and functional modules with different functions can also be combined, such as an antibacterial module, a heating module, a cleaning module, a skin detection module and an odor module. Combination is carried out according to requirements, the requirements of different customers are met, the product development frequency and time can be reduced, the production efficiency is improved, and the cost is reduced.

The invention discloses a spiral bevel gear grinding system deformation error compensation method and system and electronic equipment. According to the method, multiple times of grinding machining are conducted on a spiral bevel gear workpiece through a spiral bevel gear grinding system, and the spiral bevel gear grinding system comprises a laser distance measuring sensor and a force sensor; acquiring first data in each grinding process through a laser ranging sensor, and acquiring second data in each grinding process through a force sensor; according to the first data, grinding wheel abrasion loss and grinding system deformation are calculated; calculating a target normal force of the spiral bevel gear grinding system based on the second data; based on the target normal force and the grinding system deformation, the cutting rigidity and the grinding system rigidity are calculated; and according to the cutting rigidity, the rigidity of the grinding system and the abrasion loss of the grinding wheel, deformation error compensation of the spiral bevel gear grinding system is conducted. The rigidity of the grinding system can be accurately measured, so that intelligent compensation of the deformation error of the spiral bevel gear grinding system is realized.

A method of wireless information exchange between a user device (102) and a food package (104) containing a liquid food product is provided. The food package (104) is made of a packaging material, comprising a first radio frequency communication device (106) having a first operating frequency and being unshielded. The user equipment comprises a user interface (114) and a second radio frequency communication device (116) having a second operating frequency, wherein the second operating frequency is greater than the first operating frequency.

The application discloses a manufacturing method of a large-section thin-wall special-shaped steel shell tower segment, which comprises the following steps: first, dividing the segment into several blocks, then manufacturing block components, setting a horizontal base line, a vertical base line and block assembly position lines on an assembly platform, and fixing supporting columns and inclined positioning supports; positioning and fixing outer wall plate units of an inclined straight wall block through the positioning supports; hoisting and fixing outer wall plate units of the remaining straight wall blocks and adjusting the perpendicularity of the outer wall plate units through the supporting columns; hoisting and fixing inner wall plate units corresponding to all the outer wall plate units and adjusting and fixing the inner wall plate units through adjusting struts, and then welding connecting angle steels between the inner wall plate units and the outer wall plate units; hoisting and fixing outer wall plate units and inner wall plate units of the remaining vertical curved wall blocks in sequence through the same method, and welding connecting angle steels between the inner wall plate units and the outer wall plate units; finally, welding blocks to form the segment. The steel shell tower segment is divided into blocks which are easy to assemble, the manufacturing process is simplified, and the production efficiency is improved.

The embodiment of the present disclosure provides a cylindrical lens grating imprint material coating parameter determination method and device. The cylindrical lens grating imprint material coating parameter determination method comprises: determining the coating volume of the imprint material according to at least the cylindrical lens volume of the cylindrical lens grating, wherein the imprint material is used for imprinting on a substrate as the cylindrical lens grating.

A kind of continuous die, to form guard board support, the continuous die includes upper die and lower die, the continuous die includes transverse sequential distribution blanking station, forming station, flanging station and separation station, the upper die and lower die are provided with two groups of blanking mould core, two groups of forming mould core, two groups of flanging mould core and two groups of shearing mould core about a transverse extension symmetry axis symmetry in corresponding station.The utility model continuous die, with multiple stations, make the force that mould is suffered when clamping more dispersed, and bend structure is symmetrically arranged, force is symmetrical, prolongs the service life of mould.

The present application relates to the fast milling processing method of the complex structure and shape section parts of the airplane, and belongs to the field of aviation sheet metal forming technology. The present application solves the one-time processing of the appearance milling and drilling of the traditional complex cross-section shape and different size section parts, discards the drilling precision ensured by the drilling jig for the hole making of the section part, improves the surface quality of the section part, improves the manufacturing precision of the appearance, notch, bevel and hole, improves the processing efficiency, completes a set of tooling capable of processing different specifications of section parts through the pneumatic universal drilling and milling jig, realizes the efficient and accurate manufacturing of the section part, realizes the group milling of the workpiece, and further reduces the raw material cost, tooling manufacturing cost and shortens the process flow.

The invention provides a tuning method of a radio frequency quadrupole field accelerator cavity and a medium. The method comprises the following steps: acquiring an initial measurement result of four-quadrant electric field distribution in the radio frequency quadrupole field accelerator cavity based on a perturbation body; performing gravity error compensation on the initial measurement result to obtain a corrected measurement result; obtaining a dipolar field component and a quadrupolar field component in the cavity of the radio frequency quadrupolar field accelerator based on the correction measurement result; and judging whether the radio frequency quadrupole field accelerator cavity meets a tuning target or not based on the dipolar field component and the quadrupole field component, and if not, executing tuning operation until the tuning target is met. According to the invention, the gravity error generated by the perturbation method can be compensated, and the movement track of the perturbation body in the cavity of the radio frequency quadrupole field accelerator can be fitted, so that the accurate electric field distribution in the cavity can be simulated, and the accurate tuning can be realized.

The invention provides a capacitive encoder which is used for being arranged on a rotating shaft of an object to be detected, the capacitive encoder comprises a stator assembly and a rotor part, the stator assembly comprises a transmitter and a receiver, the transmitter can transmit electric signals, and the receiver can receive the electric signals transmitted by the transmitter; comprising a connecting part and a rotor part, the connecting part and the rotor part are integrally formed, the rotor part is connected with a rotating shaft of an object to be detected so that the rotor part can synchronously rotate with the rotating shaft, a metal wire is arranged on the rotor part, and the metal wire is a periodically changing curve. An electric signal emitted by the emitter can pass through the metal wire and is received by the receiver. According to the capacitive encoder provided by the invention, the connecting part and the rotor part adopt the integrally formed structure, and the periodically changing metal wires are directly formed on the rotor part, so that the manufacturing tolerance is reduced while the function of the capacitive encoder is realized.

The invention relates to the technical field of suspension bridge main cables, in particular to a method for erecting a continuous type suspension bridge main cable reference strand with an anti-sliding shear key, the reference strand is made of full-high-precision standard wires, and a continuous full-length type cable manufacturing mode is adopted. Comprising the following steps that S1, starting point mark points and terminal point mark points of all standard wires of a reference cable strand are aligned; s2, shear keys are fixedly installed at the span points of the reference cable strand, and the shear keys are matched with reserved notches of the cable saddle; s3, temporary fixing is conducted on the base line length marking position of the reference cable strand, and the reference cable strand is wound with a wrapping tape; and S4, temporary fixation is removed, the steel wires in the strands freely slide, and after the cable strands are stressed, the standard cable strands are erected with the average length naturally formed after standard wire length self-adaption as the length of the standard cable strands. According to the erecting method, the intra-strand error is effectively reduced, high-precision erecting can be achieved only by aligning the shear keys with the notches on site, sag adjustment is not needed, and the construction efficiency is improved.

The invention relates to the technical field of metal component forming and manufacturing, in particular to a real-time lubricating liquid supplementing incremental forming tool which comprises a mirror image forming machining system, a six-degree-of-freedom mechanical arm, a forming loading tool head and a flange plate rotating chuck. The forming loading tool head comprises a spherical ball head cutter, a clamping outer sleeve, a conducting inner sleeve and a detachable fixing sleeve; the clamping outer sleeve is fixed on a flange plate rotating chuck of the mechanical arm to support the forming loading tool to work; the starting end of the inner sleeve is connected with an oil conveying pipe; the detachable fixing sleeve is used for fixing the spherical ball head cutter and conducting a lubricating oil path; and the spherical ball head cutter is subjected to forming loading under the lubrication effect. The method comprises the steps of tool positioning, blank hot forming and aging treatment of a preformed part, finally, a metal forming component is obtained, and the problems that in the prior art, when thin-wall metal plate complex local small feature forming is conducted, precision is low, a tool bit is prone to damage, collapse and cracking are prone to occurring, and the structure property is uncontrollable are solved.

The application discloses a wiring printing device and a wiring printing method. The wiring printing device comprises a printing assembly and a driving assembly. The printing assembly comprises at least one body part. The body part comprises a wiring groove and a conductor liquid containing cavity which are in communication with each other. The conductor liquid containing cavity is used for containing conductor liquid. The conductor liquid containing cavity comprises a liquid inlet and a liquid outlet which is in communication with the wiring groove. The wiring groove is used for limiting the conductor liquid to form a wiring. The driving assembly is connected with the printing assembly and is used for driving the printing assembly to move. The wiring printing device provided by the application can reduce process deviation in the wiring preparation process and improve the preparation yield of the wiring.

The barrel segment wallboard processing system and barrel segment wallboard processing method provided by the application comprise a workbench provided with a work guide rail, a welding unit provided on the work guide rail and provided with a first transmission mechanism, the welding unit being adapted to move along the work guide rail under the action of the first transmission mechanism and to frictionally weld stringers and skins, a milling unit provided on the work guide rail and provided with a second transmission mechanism, the milling unit being adapted to move along the work guide rail under the action of the second transmission mechanism and to mill the skins, and a clamping tool provided on the workbench and provided adjacent to the work guide rail between the welding unit and the milling unit, the clamping tool being adapted to limit the stringers and the skins. Such a design enables the stringers and the skins to be automatically welded and connected, improves the manufacturing efficiency of the storage tank, and facilitates the system to realize different processes and improve the application range due to the separate arrangement and independent movement of the welding unit and the milling unit.

The utility model discloses a kind of eccentric disc for rotary electronic multi-arm machine, including eccentric disc body and eccentric disc boss, the eccentric disc body is equipped with mounting hole;The eccentric disc boss is extended from the side of eccentric disc body, the eccentric disc boss and eccentric disc body form stepped structure, the eccentric disc body and eccentric disc boss are integrally formed whole component.The utility model improves machining precision, operating stability and manufacturing economy by structure optimization and function integration.Eccentric disc body and eccentric disc boss, integrally formed whole component with stepped structure is formed by the two, the design not only guarantees the integrity and rigidity of structure, but also provides reliable positioning datum plane for subsequent assembly and clamping, effectively avoids the problem of looseness or misplacement possibly caused by split connection, improves dynamic stability under high-speed operation.

The invention relates to the technical field of celery juice preparation devices, and discloses a celery juice membrane clarification, sterilization and concentration integrated device which comprises a first filtering assembly, a second filtering assembly, a disinfection box and a concentration box. And a disinfection box is installed at a discharging opening of the second filtering assembly through a third conveying pipe, a first backflow pipe is fixed to the outer portion of the third conveying pipe, and a storage box is installed in the middle of the first backflow pipe in a matched mode. According to the celery juice membrane clarification sterilization and concentration integrated device, celery juice is filtered through the first filtering assembly and the second filtering assembly, it is ensured that the celery juice is subjected to clarification treatment, meanwhile, a first valve, a second valve and a third valve are controlled according to different production procedures, and under the auxiliary action of the storage box, the celery juice is subjected to membrane clarification sterilization and concentration; the celery juice can flow back to the interiors of the first filtering assembly and the second filtering assembly, so that the celery juice is circularly concentrated, and the concentration efficiency of the celery juice is improved.

The invention discloses a chip packaging structure, a preparation method thereof and electronic equipment, and is suitable for the technical field of semiconductors, and the chip packaging structure comprises a first wafer, a first dielectric layer, a second dielectric layer, a second wafer and a conductive structure. The first dielectric layer is arranged on the first wafer, the second dielectric layer is arranged on the side, away from the first wafer, of the first dielectric layer, a conductive layer is arranged in the second dielectric layer, the second wafer is arranged on the side, away from the first wafer, of the second dielectric layer, and the second wafer comprises a first surface close to the second dielectric layer. The first surface is provided with a shallow trench isolation structure, the shallow trench isolation structure extends into the second wafer from the first surface, and the conductive structure penetrates through the second wafer and is electrically connected with the conductive layer in the second dielectric layer. Wherein the orthographic projection of the shallow trench isolation structure on the first surface surrounds the orthographic projection of the conductive structure on the first surface. According to the technical scheme, the preparation precision and the overall performance of the chip packaging structure are improved.

The application discloses a swing support positioning device and a double-ear seat and a swing support positioning method; the positioning device comprises a double-ear seat tool for double-ear seat positioning and a swing support tool for swing support positioning; the tool is designed as a two-section structure of the swing support, and the segmented structure is positioned according to the related structure; in the clamping process, the tool can be adaptively matched according to the structure of the swing support, the tool can quickly and effectively realize more accurate positioning in the swing support machining process, the tool has higher positioning efficiency compared with a traditional structure, the tool further realizes fast speed and simple operation, has high manufacturing precision, cancels a machining end face process, shortens a process flow, improves work efficiency, realizes batch production, and reduces labor intensity.

The invention relates to a low-cost and high-precision unmanned aerial vehicle control surface integral forming method, and belongs to the technical field of advanced composite material manufacturing. According to the method, the core force bearing part of the control surface of the unmanned aerial vehicle breaks through the traditional step-by-step manufacturing mode of composite material forming and metal piece post-assembly, and integrated compression molding of the metal connecting piece and the composite material control surface is achieved. Through the technical means of precise positioning of the metal connecting piece, compression molding and forming integration of the composite material and the like, integrated forming of the metal connecting piece and the composite material is achieved, and the problem that traditional control surface manufacturing needs separate part manufacturing, machining and manual assembling is solved. The prepared unmanned aerial vehicle control surface has the advantages of being high in qualified rate, high in forming precision, high in production efficiency, low in cost, good in structural integrity and the like.

The invention discloses a distributed feedback laser based on an asymmetric sampling grating and a manufacturing method thereof, and belongs to the technical field of laser, in a grating structure of the laser, the position of equivalent pi phase shift deviates from the center of a cavity, and the duty ratio of the sampling grating, namely the ratio of the length of a sampling window to a sampling period, is less than 0.5. According to the invention, the reconstruction equivalent chirp technology is adopted, and the design of asymmetric phase shift and asymmetric coupling coefficient is combined, so that the forward output power is remarkably improved. In the structure of the laser, asymmetric regulation and control of photon density distribution are realized by optimizing the phase shift position and the duty ratio of the sampling grating, so that the forward output power is improved on the premise of keeping the stability of a single longitudinal mode. According to the method, the sampling structure is prepared by adopting a micron-sized photoetching technology, so that the dependence on high-precision electron beam photoetching is reduced, and the manufacturing tolerance and the cost effectiveness are improved. Experimental results show that the laser is stable in spectrum when working at the C wave band, and the side mode rejection ratio is higher than 50 dB.

The application discloses a kind of steel bar parts production line shape control method: the steel bar parts production line shape control is controlled by steel bar parts production line shape inclination ρ, steel bar parts production line shape inclination ρ is cable tower bridge target line shape γ, steel bar parts tower is connected under the deformation inclination of self weight action, the inclination error η of steel bar parts caused by concrete pouring, the inclination error λ of the line shape of the segment that has been poured and the sum of the current tower column segment camber β.It is reasonable to design the steel bar parts production line shape control method, realize the better adaptation of steel bar parts line shape and formwork line shape, ensure that the thickness of cable tower concrete protective layer meets the requirements, establish the lofting coordinate system when steel bar parts assembly under the blocking environment of jig frame, improve the production accuracy when steel bar parts assembly.

The invention relates to a new energy goods shelf back-pulling connecting frame which comprises a plurality of back-pulling connecting piece assemblies arranged between a single stand column and a double stand column and further comprises diagonal draw bars connected with the back-pulling connecting piece assemblies, and the back-pulling connecting piece assemblies are prefabricated parts. The back-pulling connecting piece is supported between the single stand column and the double stand column, the back-pulling connecting piece mounting plate and the back-pulling connecting piece connecting plate are arranged at the connecting ends of the back-pulling connecting piece and the single stand column or the double stand column respectively, and a back-pulling connecting piece fixing plate is arranged on the outer wall, close to the middle, of the back-pulling connecting piece. The diagonal draw bar is connected to the back pull connecting piece fixing plate, connection between goods shelves is effectively reinforced, firmer and more reliable structural support is provided, large-scale batch production is allowed through the modular prefabricated piece design, and the unit product manufacturing cost is reduced.

The application discloses a kind of big diameter shield tunnel segment fine model manufacturing device and method, the manufacturing device includes A type component, B type component, C type component and D type component, the A type component, B type component, C type component and D type component are assembled to form ring cavity;Multiple combined components for simulating shield segment detail structure are arranged in the cavity, including rubber core mold, ring (longitudinal) boss component, ring (longitudinal) convex component, ring (longitudinal) concave component, concave (convex) groove component, ring (longitudinal) T component, sleeve.The manufacturing device is prepared based on 3D printing technology, overcome the low degree of detail component fine of the existing conventional manufacturing device It is short of the shortcoming, and size deviation caused by partition plate in integrated mold pouring can be effectively reduced, and the model produced accurately simulates the detail structure characteristics of prototype structure.

The invention discloses a patellofemoral joint prosthesis preparation method and system, and the method comprises the steps: carrying out the extraction of the anatomical structure of a patellofemoral joint according to the medical image data of a patient, and reconstructing the three-dimensional geometric models of patella and femur; inputting the three-dimensional geometric model into a mechanical simulation platform to obtain a stress distribution diagram of the patellofemoral joint; generating an initial prosthesis model according to the stress distribution diagram and a patient anatomical model, and obtaining a preliminarily optimized prosthesis design scheme in combination with a topological optimization technology and a multi-objective genetic algorithm; and inputting the preliminarily optimized prosthesis design scheme into additive manufacturing equipment to obtain a final patellofemoral joint prosthesis. By utilizing the embodiment of the invention, the design and manufacturing precision of the patellofemoral joint prosthesis can be improved, and the long-term stability and applicability of the patellofemoral joint prosthesis in a biological environment are improved.

This utility model relates to the field of mask technology, specifically a mask precision auxiliary device, including a base, a guide assembly, and a positioning assembly. A support platform is bolted to the top of the base, and a support frame is rotatably connected to the top of the support platform. A guide assembly is sleeved around the support frame, and a positioning assembly is rotatably connected to the outer side of the guide assembly. The positioning assembly includes a fixed frame, with a sleeve bolted to the top of the fixed frame. A positioning bracket is slidably connected inside the fixed frame, and a push rod is threaded into the sleeve. One end of the push rod is rotatably connected to the positioning bracket via a rotating shaft. A miniature vacuum pump is bolted to one side of the fixed frame. By adding a precision auxiliary mechanism and utilizing suction negative pressure and guiding positioning, the mask pasting precision is improved, thereby enhancing the performance.

The utility model discloses spoke end conical sheet adhering equipment which is used for adhering a conical sheet to the end of a spoke and comprises a machine frame, a driving device and a driving device. The adhesion assembly is arranged on the rack and is provided with a placing part and a pressing head; the placing part is suitable for flatly placing the conical sheet; the pressing head is positioned above the placing part and is suitable for reciprocating along a vertical first direction relative to the rack; the displacement assembly is arranged on the rack and is provided with a containing groove and a displacement mechanism; the containing grooves are suitable for containing the spokes and enabling the ends of the spokes to be exposed in the second direction, and the second direction is perpendicular to the first direction. The displacement mechanism drives the spokes to do reciprocating motion in the first direction, so that the spokes are located on the placing parts and adhere to the conical sheets; and the pressing head moves downwards and presses the end part of the spoke after the conical sheet is adhered to the end part of the spoke. According to the adhesion equipment, the conical sheets can be automatically adhered to the ends of the spokes, the production efficiency is improved, and the labor cost is reduced.

This invention discloses a method for manufacturing and constructing a steel box girder. The steel box girder adopts a design with large and small ends, including beam segments A, B1, and B2, which are independently hoisted and assembled sequentially from the large end to the small end. All three are assembled using a reverse assembly method. The manufacturing process of beam segment A includes the following steps: Step A, assembling a jig on an assembly platform according to the bridge alignment and transverse distribution; Step B, assembling the top plate of A on the jig; Step C, assembling a first transverse diaphragm on one side of the top plate of A; Step D, assembling the web plate of A in the middle of the top plate of A; Step E, assembling a second transverse diaphragm on the other side of the top plate of A and performing internal welding of beam segment A; Step F, installing the bottom plate ribs of A into the slots one of the first transverse diaphragm and the slots two of the second transverse diaphragm, and positioning and welding them; Step G, installing the bottom plate of A onto the first and second transverse diaphragms, and performing internal welding of beam segment A; Step H, installing the railing base; Step I, grinding, sandblasting, and painting beam segment A.

The invention discloses a microwave atomic force microscope probe based on a coplanar waveguide structure and a preparation method, and belongs to the field of micro-nano detection and atomic force microscopes. The probe comprises a clamping part and a cantilever beam, a central conductor is laid on the axes of the upper surfaces of the clamping part and the cantilever beam, grounding metal layers are symmetrically arranged on the two sides of the central conductor at certain intervals, the grounding metal layers and the central conductor are parallel and equal in length, and the central conductor, the grounding metal layers and gaps between the central conductor and the grounding metal layers form a clamping part coplanar waveguide structure; and the central conductor and the grounding metal layer of the clamping part are respectively connected with the central conductor and the grounding metal layer of the cantilever beam to form a microwave transmission circuit, and the microwave transmission circuit is converted into a coaxial transmission line structure at the needle point to transmit a microwave signal to the needle point, so that emission and receiving of a near-field microwave signal are realized. According to the invention, the design is flexible, integration is easy, low-loss and low-dispersion transmission of microwave signals is facilitated, the design complexity and manufacturing cost of the probe are reduced, and effective support is provided for micro-nano detection and an atomic force microscope technology.

The present invention relates to a method and device for molding a medical device head with glue, the method comprising the following steps: inserting a medical device housing into a mold, then inserting a metal pin into a flexible sleeve, and inserting the metal pin with a flexible sleeve on the outer surface into a first hole and a second hole reserved in the mold. Next, injecting a glue potting material for forming the medical device head into the mold and waiting for it to solidify. After solidification, the metal pin, the flexible sleeve needle and the mold are removed in turn to obtain a molded medical device head. Compared with the prior art, the present invention reduces the risk of damage to the inner wall of the suture hole and improves manufacturing accuracy and production efficiency.

The invention discloses a chip packaging structure, a preparation method thereof and electronic equipment, and is suitable for the technical field of semiconductors, and the chip packaging structure comprises a first wafer, a first dielectric layer, a second dielectric layer, a second wafer and a second conductive structure. The first dielectric layer is disposed on the first wafer. The second dielectric layer is arranged on the side, away from the first wafer, of the first dielectric layer, a first conductive layer and a first conductive structure are arranged in the second dielectric layer, the first conductive structure is arranged on the side, away from the first wafer, of the first conductive layer, and the second dielectric layer comprises a first surface away from the side of the first wafer; the first conductive structure extends into the second dielectric layer from the first surface and is electrically connected with the first conductive layer. The second wafer is disposed on a side of the second dielectric layer away from the first wafer. The second conductive structure penetrates through the second wafer and is electrically connected with the first conductive structure. According to the technical scheme, the overall yield of the chip packaging structure is improved.