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175results about How to "High forming precision" patented technology

A Die Casting Process Parameter Optimization Method and System Based on Digital Twin

ActiveCN121506275BAchieve intelligent optimizationAchieve continuous self-evolutionChemical processes analysis/designBiological modelsQuality dataDie casting
The present invention relates to the field of die-casting optimization technology, and discloses a die-casting process parameter optimization method and system based on digital twin. The method includes: arranging sensors to collect die-casting equipment operation parameters and die-casting part quality data in real time to form multi-source die-casting production data. According to the multi-source die-casting production data, establish a multi-physics field simulation model and construct a digital twin model. Compare the virtual prediction results with the measured quality data, and construct a virtual-real difference compensation network to correct the parameters of the digital twin model. Based on the compensated digital twin model, perform a multi-objective reinforcement learning method to generate the optimal die-casting process parameters. Apply the optimal die-casting process parameters to the die-casting equipment for verification, and update the virtual-real difference compensation network according to the verification results. This application realizes the intelligent optimization and continuous self-evolution of die-casting process parameters, and improves the casting forming accuracy, energy efficiency utilization rate and production stability.
Owner:TIANJIN RONGHE TECHNOLOGY DEVELOPMENT CO LTD

A mold for producing a polytetrafluoroethylene profile

ActiveCN224489726UImplement modular replacementReduce replacement costs
The utility model discloses a kind of polytetrafluoroethylene section bar production molds, including upper receiving part and lower forming part, upper receiving part and lower forming part are detachably connected, lower forming part includes cavity part and support part, cavity part is located inside support part and both outer wall and inner wall abut, cavity part and support part are also detachably connected. The mold is designed as detachable structure by upper receiving part and lower forming part, cavity part and support part, realizes the modularization replacement of component, without integral replacement mold can be adapted to different shape or size section bar production, reduce replacement cost and shorten replacement time, while the abutment support of support part to cavity part can effectively reduce cavity deformation in high-pressure moulding process, improve the forming precision and production efficiency of polytetrafluoroethylene section bar, applicable to the production demand of many varieties small batch.
Owner:WENZHOU YINGFEI APPL OF ENG PLASTICS CO LTD

Integrated semi-solid magnesium alloy high-pressure casting mold for new energy automobile

The utility model belongs to the technical field of automobile part casting molds, and provides an integrated semi-solid magnesium alloy high-pressure casting mold for a new energy automobile, which comprises a movable mold assembly, a fixed mold assembly, a sliding block mechanism, a sealing assembly, an exhaust assembly and a pouring system, the sealing assembly is arranged between the movable mold assembly and the fixed mold assembly, a sealing cavity is formed between the movable mold assembly and the fixed mold assembly, a product cavity is further formed between the movable mold assembly and the fixed mold assembly, and the product cavity comprises three cavities used for forming a first main body part, a second main body part and a third main body part respectively; the sliding block mechanism is arranged on the movable mold assembly; the exhaust assembly comprises an exhaust part; the pouring system comprises a pouring gate. Compared with the prior art, the pouring gates are asymmetrically distributed along the product cavity, semi-solid magnesium alloy slurry can be guided to be filled in a stable laminar flow state, air entrapment, turbulent flow and impact are reduced, the defects of cold shut and shrinkage porosity of products are reduced, and the forming precision and mechanical property of the integrated vehicle-mounted decoration plate are improved.
Owner:NINGBO SCIVEDA MASCH CO LTD

Impeller integrated forming die

The utility model discloses an impeller integrated forming die which comprises a bottom plate, a top plate, a fixing disc, a guide column and a center shaft. A plurality of first guide holes are formed in the bottom plate; the top plate is located above the bottom plate and is parallel to the bottom plate, a sinking groove is formed in the lower end of the top plate, a first through hole is formed in the upper end of the top plate, a second guide hole is formed in the top plate, and an exhaust groove is formed in the bottom face of the top plate. The fixing disc is embedded into the sinking groove, a second through hole corresponding to the first through hole is formed in the fixing disc, a cutting groove is formed in the edge of the bottom face of the fixing disc, and the exhaust groove is communicated with the cutting groove; the guide columns are perpendicular to the bottom plate, each second guide hole is internally provided with one guide column, and one end of each guide column extends into the corresponding first guide hole; two ends of the central shaft are respectively connected with the bottom plate and the top plate. Accurate positioning and stable supporting of the impeller blades and the impeller body in the mold are achieved, the forming precision of the impeller is effectively improved, and the mechanical property of the impeller is improved.
Owner:QINGDAO ENG VOCATIONAL COLLEGE

Bending device and bending equipment

ActiveCN224210533UHigh forming precisionAvoid the cumbersome process of secondary correctionsPrinted circuit manufactureDomestic articlesFlexible circuitsElectrical battery
The utility model relates to the technical field of batteries, and discloses a bending device and bending equipment, the bending device is suitable for bending a flexible circuit board to a preset angle, and the bending device comprises a first die body and a second die body. The first die body is provided with a first surface and a second surface which intersect, and the first surface is suitable for abutting against the main body section of the flexible circuit board. The second mold body can move between a first position and a second position, and the first mold body is provided with a third face. Under the condition that the flexible circuit board abuts against the first face and the second die body is located at the first position, the second die body is located on the side, away from the first die body, of the flexible circuit board, and under the condition that the second die body moves to the second position, the second die body pushes the bending section of the flexible circuit board to be bent. The two sides of the bent section abut against the second face and the third face respectively, and the included angle between the first face and the second face is smaller than a preset angle. According to the application, the phenomenon that the actual forming angle deviates from the preset value after the flexible circuit board is bent is avoided by carrying out over-bending treatment on the flexible circuit board.
Owner:SUNWODA ELECTRONICS CO LTD

Automatic winding equipment for amorphous ribbon magnetic cores and its auxiliary winding and welding mechanism

ActiveCN224287994UReduce the failure rateHigh forming precisionInductances/transformers/magnets manufactureAmorphous ribbonControl theory
This utility model provides an automatic winding device for amorphous strip magnetic cores and its auxiliary winding and welding mechanism. The auxiliary winding and welding mechanism includes a clamping unit, which includes a clamping component and a first drive module. The first drive module can drive the clamping component to move in a first direction. The clamping unit also includes a second drive module. The clamping component is rotatably connected to the drive end of the first drive module around its own first axis. The second drive module can drive the clamping component to rotate. The first axis is parallel to the first direction. The automatic winding device for amorphous strip magnetic cores includes the above-mentioned auxiliary winding and welding mechanism, which can improve the winding end quality and welding quality of the magnetic core.
Owner:ZHUHAI GERUN XINNA ELECTRONICS CO LTD

Synchronous mold opening device for insulator forming

ActiveCN224060385UEnsure high consistencyensure reliabilityMechanical engineering
The utility model relates to the technical field of insulator production, in particular to a synchronous mold opening device for insulator molding, which comprises an upper mold and a lower mold, a molding cavity is arranged between the upper mold and the lower mold, and a material injection port is arranged on the upper mold; the forming mold is composed of a mold base and sliding mold cores, a pair of sliding mold cores are arranged on the mold base in a sliding opening and closing mode, the opening and closing process of the forming mold is completed through opening and closing of the sliding mold cores, and a mounting cavity used for containing an insulator mold blank is formed between the mold base and the pair of sliding mold cores; the lower mold is provided with two mold feeding guide rails, the forming mold is slidably placed on the inner sides of the two mold feeding guide rails, and opening and closing assemblies are arranged at the ends, away from the lower mold, of the two mold feeding guide rails and located on the outer side of the forming mold. According to the utility model, the two sliding mold cores on the forming mold can be automatically and synchronously opened and closed through the opening and closing assembly, and the high consistency and reliability in the opening and closing process of the mold can be effectively ensured, so that the forming precision and the product quality of an insulator are remarkably improved.
Owner:NANCHANG UNIV

Arc rod of load type passenger car without wrinkle elbow pipe die

ActiveCN224463485UImprove adaptabilityEfficient BendingCar passengerControl theory
The utility model belongs to the technical field of pipe bending mould, especially arc rod of heavy -duty passenger car wrinkleless pipe bending mould of taking in, including bottom frame, the top one end of bottom frame is provided with sliding guide mechanism, the top other end of bottom frame is provided with driven limit adjustment mechanism and initiative limit adjustment mechanism respectively, the inside of bottom frame is provided with bending drive mechanism. This arc rod of heavy -duty passenger car wrinkleless pipe bending mould, this mould cleverly integrated a variety of precision mechanism, realized the efficient, accurate and wrinkleless bending processing of heavy -duty passenger car arc rod. Sliding guide mechanism utilizes PTFE sliding cover, ensured the stable, accurate guidance of passenger car arc rod before entering the bending area, effectively protected the passenger car arc rod surface and reduced the friction resistance. Driven limit mechanism provides initiative, adjustable clamping force through the air cylinder, cooperates with slide rail guide and fine adjustment function, realizes reliable initial positioning and process limit.
Owner:XIAMEN MEICHI AUTO PARTS IND CO LTD

An arrayed laser additive manufacturing method and apparatus

The application belongs to the technical field of laser additive manufacturing, and particularly relates to an array type laser additive manufacturing method and device, which comprises the following steps: S1, digital model import and layering slicing; S2, scanning path planning and filling setting; S3, array type laser synchronous output control; S4, powder flow and powder feeding path control; S5, according to the width of the additive, the width of single track cladding is adjusted in real time; S6, according to the slice layer material of the additive, the matching material is delivered; S7, S1-S6 are repeated, and layer-by-layer accumulation is performed until the part manufacturing is completed. The application can accurately control the grain size, improve the material microstructure, and improve the mechanical properties; the generation of defects such as thermal cracks and pores is reduced, the stability of the deposition process is ensured; the interlayer bonding is optimized, the quality of multi-layer deposition is ensured; the residual stress is reduced, the size precision, shape stability and fatigue performance of the part are improved; the post-processing requirement is reduced, and the processing cost is reduced.
Owner:SHENYANG AEROSPACE UNIVERSITY

Light spot detection and adjustment method and system

The application discloses a light spot detection and adjustment method and system. The method comprises the following steps: in a printing process, a movable mirror is controlled to move into the light path of a printing laser, so that the printing laser focused by a field lens is reflected to a light spot detection unit through the movable mirror; an actual light spot size of the printing laser on a printing work surface detected by the light spot detection unit is acquired; the actual light spot size is compared with a preset reference light spot size, and a light spot size deviation is calculated; according to the light spot size deviation, an electrically-driven beam expander is controlled to adjust the divergence angle of the printing laser until the difference between the actual light spot size and the reference light spot size is within a preset range. The application can effectively compensate for the light spot size change caused by thermal drift, ensure the stability of the light spot size in a long-term printing process, and improve the 3D printing forming precision.
Owner:GUANGDONG HANBANG 3D TECH CO LTD

Method, device, equipment and medium for springback compensation of punch die profile

PendingCN122153990AAccurately retain global deformation featuresInhibition of reboundGeometric CADCluster algorithmStamping process
The present disclosure provides a springback compensation method, device, equipment and medium for a stamping die surface, the springback compensation method comprising: performing stamping process simulation on an initial die surface to obtain simulation grid data; performing non-uniform offset processing on the simulation grid data to obtain offset grid; and reconstructing the offset grid into a compensated die surface by using a density clustering algorithm. The simulation grid data containing wall thickness distribution is obtained based on the stamping process simulation of the initial die surface, providing accurate physical basis for subsequent compensation, and the offset grid adapting to the non-uniform deformation of the sheet metal is generated through non-uniform offset processing, breaking through the limitation of traditional equidistant offset that cannot cope with complex springback of high-strength steel. Finally, the offset grid is reconstructed by using the density clustering algorithm, which compresses the number of control points of the curved surface to improve efficiency while accurately retaining the global deformation characteristics of the sheet metal, thereby effectively suppressing the stamping springback of high-strength steel and greatly improving the forming precision of the stamped part.
Owner:ZHEJIANG ELECTROMECHANICAL VOCATIONAL & TECH COLLEGE

An additive manufacturing method for strain rate enhanced composite gel

ActiveCN117445390BHigh forming precisionOvercome the limitations of moldingManufacturing platforms/substrates3D object support structuresN-Octanoic acidOctanoic Acids
This invention relates to an additive manufacturing method for strain rate-enhanced composite gels, comprising: a) polymerizing silicone oil, boric acid, and octanoic acid at high temperature to prepare a shear-hardening gel; b) introducing the shear-hardening gel into a polyvinyl alcohol aqueous solution and adding chitosan particles, followed by ball milling to obtain a composite gel precursor; c) printing the composite gel precursor using pneumatic extrusion combined with a triaxial motion control system, and then obtaining the composite gel through freeze-thaw treatment. This composite gel precursor is propelled from the nozzle by air pressure in a pneumatic extruder, and the triaxial motion control system enables the deposition of arbitrary two-dimensional patterns and the stacking of three-dimensional structures, overcoming the limitations of traditional strain rate-enhanced composite gels formed by molding and injection molding methods, and endowing it with greater molding freedom and higher molding precision in additive manufacturing.
Owner:UNIV OF SCI & TECH OF CHINA

A frozen sand mold intelligent carrying device with environment sensing function and applicable to a freeze casting production line

ActiveCN119160636BSolve handling problemsSolve process problemsControl devices for conveyorsSupporting framesDrive wheelDot matrix
This invention discloses an intelligent handling device for frozen sand molds with environmental sensing capabilities, suitable for frozen casting production lines. The device includes a walking mechanism, a support and lifting mechanism, a sand mold clamping and tilting mechanism, an environmental sensing module, and a central control module. The walking mechanism is the power source for the entire machine's movement and consists of a frame chassis, drive wheels, and casters. The support and lifting mechanism consists of an electric cylinder, a pressure sensor, and a crossbeam. The sand mold clamping and tilting mechanism consists of a linear module, clamping arms, clamping plates, a load-bearing shaft, a copper sleeve, a mounting bracket, strain gauges, a hollow rotating platform, and a drive motor. The environmental sensing module is mounted on the frame of the handling device. The block consists of a 3D dot matrix scanning sensor, a machine vision camera, and a thermal imager. The central control module collects data from pressure sensors, strain gauges, and environmental sensing modules in real time for analysis and decision-making. It generates the current optimal working parameters and adjustment parameters through methods such as coupling mapping and digital twins, and feeds them back to each mechanism for real-time control to optimize the handling process. This invention solves the problem of large-scale frozen sand handling and turning in the molding process in a cryogenic casting production line, improves the molding efficiency and accuracy of sand molds, greatly reduces manpower, and plays a role in cost reduction and efficiency improvement for the entire cryogenic casting production line, which is in line with the national trend of developing green casting.
Owner:SHANDONG UNIV OF TECH

A glassware forming apparatus

The utility model relates to glass forming technical field, concretely is a kind of glassware forming equipment, including adjusting mechanism between the blow head and bottle mouth mould, the adjusting mechanism includes tube body, and tube body top end is fixedly connected with connecting hopper, the connecting hopper is fixedly connected with blow head, the tube body bottom is detachably connected with bottle mouth mould, the tube body inside is provided with moving pipe, and moving pipe is bottom end seal structure, multiple air injection holes are set in the moving pipe outer wall bottom end. In the utility model, by connecting connecting hopper with blow head, gas enters the inside of moving pipe through connecting hopper, by starting air pump, space between sealing ring and rubber ring can be injected or sucked gas by using conduit, so as to adjust the position of moving pipe, so that moving pipe can be inserted into mould inside, and then gas is sprayed out by air injection hole to blow and press each part of bottle body, so as to improve bottle body forming precision.
Owner:扬州星汉玻璃工艺品有限公司

Cold heading equipment for self-tapping screw machining

ActiveCN224195832USolve the problem of only processing fixed size boltsImprove versatilityBoltsUpsetting pressesHydraulic cylinderElectric machinery
The utility model relates to the technical field of cold heading equipment, in particular to cold heading equipment for self-tapping screw machining, which comprises a machining table, a lower die and an upper die, a hydraulic cylinder is arranged on the machining table, a hydraulic rod is connected with a movable plate, and a cold heading head is arranged on the movable plate; a motor for driving the upper die to move downwards is arranged on the supporting frame, a bearing base is arranged at the end, away from the hydraulic cylinder, of the machining table, an abutting rod body is slidably connected to the bearing base, and a limiting mechanism is arranged between the bearing base and the abutting rod body; the limiting mechanism comprises a first limiting insertion hole formed in the bearing base and a plurality of second limiting insertion holes formed in the abutting rod body at equal intervals. When the first limiting insertion hole and the second limiting insertion hole coincide, the limiting insertion rod is inserted to limit the position of the abutting rod body. By means of the adjustable abutting rod body, the applicable product range is widened.
Owner:TAIZHOU CHENGMENG METAL PRODUCTS CO LTD

Automobile air conditioner pipeline pressing device

PendingCN122274047AHigh forming precisionImprove structural tightnessManufacturing technologyPipe fitting
This invention relates to the field of automotive air conditioning manufacturing technology, and discloses an automotive air conditioning pipe crimping equipment, comprising a feeding device, a processing device, and a unloading device. The processing device includes end leveling, upsetting, radial extrusion, and deburring units, as well as a three-axis transfer claw. The unloading device integrates unloading and visual inspection units. The equipment achieves multi-process automatic flow of pipe fittings through the three-axis transfer claw, sequentially completing pipe end leveling, upsetting, radial extrusion forming, and deburring, ensuring processing coaxiality, avoiding pipe eccentricity and cracking, and improving pipe end forming accuracy and sealing performance. Simultaneously, online quality inspection through visual inspection during the unloading stage automatically identifies defective products. The entire machine integrates feeding, multi-process forming and finishing, online inspection, and automatic unloading, achieving a high degree of automation, reducing labor intensity, and improving production efficiency and product yield.
Owner:四川航勰汽车空调有限公司

Method and device for automatically regulating and controlling pre-camber of cast-in-place box girder

The invention provides a cast-in-place box girder pre-camber automatic regulation and control method and device. The device comprises a first-stage jacking system, a second-stage jacking system, a third-stage jacking system and a transverse moving system. After the pouring maintenance of the current span box girder is completed, the hydraulic oil cylinders of the first-stage jacking systems of the front and rear main supporting legs retract, the whole machine falls down, and the formwork is demoulded; the hanging outer rib is disconnected, a three-stage jacking system oil cylinder at the top of the cross beam retracts, and a transverse moving system is started to achieve mold opening; the whole machine moves forwards by one span, and the jacking amount is adjusted according to the longitudinal slope of a main beam through a front and rear main supporting leg first-stage jacking system; correcting the section position of the template through a three-stage jacking system at the top of the cross beam, and controlling the bottom die to be positioned at the same elevation; a transverse moving system is started to complete outer mold bottom plate connection, and the actual position line of the mold plate is determined; calculating to obtain the elevation adjustment amount of the outer mold of each block based on an influence matrix method, and performing synchronous and automatic regulation and control by utilizing a secondary jacking system, so that a template system reaches a designed pre-camber line position; the problems that the pre-camber regulation and control efficiency of a traditional cast-in-place box girder movable formwork is low, errors are uncontrollable and the like are solved.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD

A Hollow Tube Molding Method Based on Low-Shrinkage PEKK for High-Fidelity Replication of Inner Wall

PendingCN122560381ASolve the problem of large deviation in traditional molding replicationreduce roughness
This invention discloses a method for forming hollow tubes based on low-shrinkage PEKK to achieve high-fidelity replication of the inner wall, belonging to the field of precision molding technology for high-performance thermoplastic polymers. The method includes the following steps: material selection, melt contact molding, inner wall morphology replication, shrinkage attachment control, rapid cooling and freezing, and demolding to obtain the finished product. This invention, through a series of structures and precise control of material shrinkage behavior, allows the inner wall morphology of the tube to directly replicate the surface of the mandrel. The roughness difference ΔRa between the inner wall of the tube and the surface of the mandrel is ≤0.3μm, truly achieving high-fidelity replication of the inner wall morphology and fundamentally solving the problem of large replication deviations in traditional molding processes.
Owner:HANGZHOU LEXIN NEW MATERIAL TECHNOLOGY CO LTD

A blank holder structure of a stamping die for a crash beam support

This utility model provides a pressing structure for a stamping die of a crash beam bracket, belonging to the technical field of stamping dies for automotive parts. The pressing structure of the stamping die of the crash beam bracket includes a pressing structure body, a pre-pressing component, a slide groove, a connecting plate, and a compression spring. The pressing structure body is fixedly connected to the lower bottom surface of the upper die base and moves with the moving direction of the upper die base. A slide groove is provided inside the pressing structure body, and the slide groove is distributed along the stamping direction. A compression spring is provided in the slide groove, and one end of the compression spring abuts against the inner wall of the end of the slide groove. One end of the connecting plate is fixedly connected to the other end of the compression spring and slidably connected to the slide groove. The other end of the connecting plate is fixedly connected to the pre-pressing component. Multiple pre-pressing components are provided, with one pre-pressing component corresponding to one connecting plate. The cross-section of the graphic formed by the pre-pressing component and the connecting plate is a letter T-shape. The lower bottom surface of the pre-pressing component is a concave arc surface adapted to the profile of the crash beam bracket to achieve more precise local pre-pressing.
Owner:XUANCHENG HONGRUI MACHINERY MFG

A residual heat-assisted multi-heat source coordinated modulation welding device and welding method

This invention provides a residual-temperature assisted multi-heat-source synergistic modulation welding device and method, relating to the fields of laser welding and friction stir welding, aiming to solve the problems of easy forming defects and performance degradation in welding aluminum-lithium alloys. The device outputs a composite heat source through a laser-arc composite heat source system to melt the welding wire and stabilize the molten pool with deep penetration on the front side of the workpiece; a motion system controls the movement of the friction stir heating system; a residual-temperature-airflow synergistic auxiliary temperature control system dynamically adjusts the temperature of the solid phase region of the molten pool; a monitoring and sensing system collects physical field modal data in real time and uploads it to the control system; a flexible tooling system is used to clamp the workpiece with variable curvature; the friction stir heating system applies dynamic shearing and mechanical upsetting forces in the residual high-temperature region on the back side, effectively improving defects such as back-side collapse and burn-through in the weld of the workpiece with variable curvature. The residual-temperature assisted multi-heat-source synergistic modulation welding method is applied to the residual-temperature assisted multi-heat-source synergistic modulation welding device.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

A forming device for a self-sealing paper bag with a flat rope handle

This utility model relates to the field of paper bag packaging forming technology, and discloses a forming device for a self-sealing paper bag with a flat rope handle. The device includes a support frame, a conveyor belt at the top of the support frame, a forming frame fixedly connected to the top of the conveyor belt, and slide rails fixedly connected to both sides of the support frame. A guide assembly is provided at the top of each slide rail. The guide assembly includes a sliding plate and a push plate. The sliding plate is slidably connected to the top of the slide rail, and one side of the push plate is fixedly connected to the side wall of the sliding plate. An electric telescopic rod is installed inside the conveyor belt, and the side wall of the sliding plate is fixedly connected to the output end of the electric telescopic rod. In this utility model, the electric telescopic rod drives the sliding plate to slide on the slide rail, and the sliding plate drives the push plate to move laterally, thereby improving the forming accuracy of the paper bag and solving problems such as heat-pressing misalignment and bag deformation caused by paper bag offset. This improves the stability of equipment processing and the pass rate of finished paper bags.
Owner:YIWU JUNYE PAPER PROD CO LTD

Manufacturing process of oil tank-skin integrated fuselage with integrated weaving forming structure

PendingCN121947785AMeet sealing requirementsMeet security requirementsAircraft assemblyDomestic articlesAviationManufacturing technology
The invention provides a manufacturing process of an integrally woven structural fuel tank-skin integrated fuselage, and relates to the technical field of aviation fuel tanks, the manufacturing process comprises the following steps: S1, preparing equipment and materials; s2, weaving and curing for the first time; s3, weaving and curing for the second time; and S4, post-processing and detecting. Through the integrated process of fuel tank mandrel supporting and two-time weaving and curing, a connecting interface and a stress concentration point caused by riveting and cementing in traditional split manufacturing are completely eliminated, the skin and the fuel tank are seamlessly fused to form an integral structure, the problem of connection failure caused by environmental factors is effectively solved, and the service life of the fuel tank is prolonged. The structural integrity, the overall strength and the sealing performance of the integrated fuselage are remarkably improved, and the use requirements of complex working conditions in the aerospace field are met; according to the method, the procedures of multiple times of part separation and solidification, multi-mold adaptation and complex assembly in a traditional process are reduced, the method is matched with accurate parameter control of automatic weaving equipment, dependence on manual layer laying precision and experience is eliminated, and the production period is remarkably shortened.
Owner:JIANGSU GAOLU COMPOSITE MATERIAL CO LTD

Multi-layer multi-pass welding path optimization method and system based on physical information fusion

The invention discloses a multilayer multi-pass welding path optimization method based on physical information fusion, and relates to the technical field of advanced manufacturing welding. According to the method, three-dimensional welding path planning is dimensionally reduced into a two-dimensional control point optimization problem through control point parametric modeling, a penalty function fusing gravity, thermal power, fluid dynamics and other multi-physical field effects is constructed, and a particle swarm optimization algorithm introducing a sequence constraint module and improving a speed updating formula is adopted for solving. And Monte Carlo simulation and a robustness enhancement mechanism fed back by a sensor are integrated. The technical defects that a traditional method neglects multi-physics field coupling, is prone to falling into local optimum, lacks robustness and is complex in calculation are overcome, multi-layer and multi-pass welding path planning with global optimization, high physical consistency and high engineering practicability is achieved, welding efficiency, forming precision and structural performance are remarkably improved, and the method is suitable for robot online welding scenes.
Owner:GUANGDONG UNIV OF TECH

Plate pre-drawing and dieless mirror image loading composite forming process and product

The invention discloses a plate pre-drawing and dieless mirror image loading composite forming process and a product, and belongs to the technical field of metal component forming and manufacturing. The method is used for solving the problems of cracking, ultra-poor thinning, low dimensional precision and the like in the forming process of the high-strength aluminum alloy thin-wall component with local continuous large-area bulge and local large wall angle characteristics in the aerospace field. According to the method, through two-stage area expansion distribution, the thinning amount of each stage is effectively controlled, and the cracking problem caused by one-time large deformation in a single process is avoided. And mirror images are cooperatively loaded on the local part of the plate to form a three-dimensional stress state, so that the forming limit is improved. And in-mold constraint aging synchronously realizes strengthening and shape righting, and is obviously superior to the traditional process.
Owner:DALIAN UNIV OF TECH

Secondary demolding mechanism for side mold

ActiveCN224183631Uavoid damageAvoid incomplete demoldingClassical mechanicsStructural engineering
The utility model relates to a side mold two-stage demolding mechanism which comprises a mold body, the mold body comprises a fixed mold and a movable mold, and the movable mold is arranged at the upper end of the fixed mold; the demolding assembly comprises reference molds symmetrically arranged on the fixed mold, adjusting columns are arranged on the front face and the rear face of one side of each reference mold, demolding blocks are arranged on the adjusting columns in a sliding mode, inclined inserting blocks are used for forming inclined inserting grooves of workpieces, and a plurality of forming grooves are formed between the symmetrically-arranged reference molds; inclined guide concave surfaces used for placing inclined insertion blocks are arranged on the reference mold corresponding to the forming grooves, the ends, away from the forming grooves, of the inclined insertion blocks are connected with one side of the top of the demolding block, and the demolding block abuts against the reference mold on the adjusting column. The demolding structure of the mold is optimized, the better demolding effect can be achieved, the stability and reliability of demolding operation are guaranteed, and the mold is matched with forming of a workpiece with a chute.
Owner:SHANGHAI GOOD FAITH ICEST

A ball valve body anti-shrinkage permanent mold casting module

This invention discloses a ball valve body anti-shrinkage casting module, relating to the field of ball valve body processing. It includes a casting main block, with a first guide post welded internally. The inner wall of the first guide post is lined with paraffin wax. This invention sets up a module by welding the first guide post to the inner wall of the casting main block and correspondingly welding a second guide post to the inner wall of the casting sub-block. One end of the first guide post is designed as a tapered structure. This tapered end can guide and retract the valve core during the initial stage of mold closing between the casting main block and the casting sub-block. Due to the gradual transition characteristics of the tapered surface, the cooperating first and second guide posts simultaneously provide continuous limiting guidance to the valve core within the mold cavity during the closing process of the two modules, preventing the valve core from shifting or misaligning during mold closing, thereby achieving rapid guidance and positioning of the valve core.
Owner:JIANGSU ZILI PRECISION CASTING CO LTD

Preparation method of spherical padding for sintering resistor disc of lightning arrester

The invention provides a preparation method of a spherical padding for sintering a resistor disc of a lightning arrester, and belongs to the technical field of manufacturing of lightning arresters. The method comprises the following steps: firstly, preparing slurry by taking granulation waste as a raw material, and then preparing the spherical padding by virtue of a breakthrough titration forming process for the first time, so that the forming precision is high, the spherical quality is excellent, the use performance of the padding can be directly improved, the material structure is stable, the performance loss is low, and the original characteristics of the waste can be reserved to the greatest extent; the damage to the material performance in the preparation process is reduced. In addition, the preparation method provided by the invention is simple, the process is mature, and the use amount of additives is small, so that the production cost can be effectively reduced, and the economic value is relatively high.
Owner:XIAN XD ARRESTER CO LTD +2

Synchronous double-machine-head metal wire forming machine

The utility model discloses a synchronous double-machine-head metal wire forming machine which comprises a machine frame, a first auxiliary assembly is arranged above the machine frame, a second auxiliary assembly is arranged on one side of a limiting plate, and through the first auxiliary assembly arranged on the machine frame, auxiliary correction can be carried out on metal wires which are not placed in the middle or deviate when the metal wires are bent. According to the metal wire forming device, the metal wire is ensured to be always kept in a correct posture and position in the forming process, so that the forming precision and quality are improved, the problem of poor forming effect caused by deviation of the wire is effectively avoided, and the stability of the production process and the qualified rate of products are ensured; chippings generated on the upper surface of the rack can be cleaned in time, interference caused by chipping accumulation to equipment operation is avoided, the reliability of the equipment is improved, and the service life of the equipment is prolonged.
Owner:WUYI WEIER IND & TRADE CO LTD

A method and apparatus for coaxial adaptive laser melting and forming of light-filament-powder beams

This invention discloses a three-beam coaxial adaptive laser melting and forming method and apparatus, relating to the fields of metal additive manufacturing and laser welding technology. The method includes: activating a protective gas system; starting a high-precision real-time control system, acquiring multi-source signals from the molten pool region in real time through a monitoring module; transmitting the multi-source signals acquired by the monitoring module to a central processing unit to establish a mapping relationship model between monitoring features and process quality; based on the output of the mapping relationship model, real-time feedback control of laser power, wire feeding speed, and powder feeding rate; and repeating the adaptive control steps to achieve full-process adaptive closed-loop control of the forming path. This invention employs the aforementioned three-beam coaxial adaptive laser melting and forming method and apparatus, which has the advantages of good synergy and multiple control dimensions, enabling online real-time closed-loop control of the manufacturing process and solving the problems of uneven gap repair and forming defects and composition control in the preparation of functionally graded materials.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS