63results about How to "High forming precision" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

This invention discloses a crankshaft-type dual-point multi-link press, relating to the field of press technology. It includes a support table, table body, crankshaft assembly, trolley assembly, and track. The crankshaft assembly includes a motor, transmission gears, a large gear, and a crank-connecting rod mechanism to achieve a "slow down, fast up" stamping motion. The trolley assembly includes a geared motor, drive wheels, and track cleaning blades to achieve smooth transfer of the entire machine and track cleaning. Anti-eccentric load devices are provided on both sides of the crankshaft assembly. These devices include a connecting drive assembly, a guiding and stabilizing assembly, and a clamping support assembly. This invention uses the sliding block to trigger the connecting drive assembly when it descends, which, in conjunction with the multi-link, achieves eccentric load compensation. The guiding and stabilizing assembly provides high-precision vertical guidance, and the clamping support assembly dynamically clamps the guiding structure during the stamping process. The entire machine has a compact structure, stable operation, high stamping accuracy, and strong anti-eccentric load capability.

This invention discloses a method and apparatus for optimizing the feeding frequency of particulate friction stir additive manufacturing. First, feeding experiments are conducted under different operating conditions to collect pressure and displacement data. A mechanism-empirical hybrid model of the dynamic coupling relationship between pressure, displacement, and feeding frequency is established. An uncertainty set is defined. A robust optimization model for the feeding frequency is established. The dual objective is transformed into a single objective through weighted summation. The inner worst-case scenario is solved. The outer optimization employs adsorption kinetics-enhanced gradient descent. This invention uses an improved gradient descent algorithm as the core optimizer, requiring only one calculation of the inner worst-case scenario and gradient per generation. The computational load is significantly less than that of population-based algorithms, making it suitable for embedding in real-time control systems for online optimization. Combined with adaptive learning rate, dynamic diffusion intensity, and desorption probability adjustment mechanisms, the algorithm achieves rapid convergence while maintaining global search capability, providing an efficient and feasible technical solution for online dynamic tuning of the feeding frequency.

This invention relates to the field of forging technology, and more particularly to a multi-directional isothermal precision forging process and a dedicated mold system, comprising: pre-treating a billet; placing the pre-treated billet in a heating furnace and heating it to the initial forging temperature and holding it at that temperature for a preset time, the preset holding time being determined based on the billet's material and maximum cross-sectional thickness; transferring the heated billet to an isothermal mold for positioning and mold closing; determining whether mold offset exists based on the upper mold load fluctuation value and the pressure difference between the two molds, and adjusting the pressure of one mold side based on the pressure response time difference between the two sides or adjusting the upper mold pressing rate based on the upper mold load fluctuation value; demolding and cooling the forged part; performing three-dimensional scanning and ultrasonic testing on the cooled part, determining whether the part is qualified based on a comprehensive quality evaluation value, and determining a process adjustment strategy based on the defect type. This invention improves the accuracy and stability of forging.

This application belongs to the field of metal composite plate preparation, specifically relating to a 304 stainless steel-high manganese steel composite plate and its preparation method. The preparation method includes the following steps: S1, obtaining 304 stainless steel slabs and high manganese steel slabs, stacking and welding the 304 stainless steel slabs and high manganese steel slabs to obtain a first composite slab; S2, heating the first composite slab to obtain a second composite slab; S3, rolling the second composite slab to obtain the 304 stainless steel-high manganese steel composite plate. This application solves the problem of "excessive thinning of the soft phase" caused by the hardness difference in "soft / hard" composite plates during rolling by introducing a thickness ratio compensation formula in the billet assembly stage. This significantly improves the thickness ratio accuracy of the final product. By dynamically adjusting the speed ratio, the rolling effect generated by "variable speed rolling" effectively offsets the internal bending moment caused by uncoordinated deformation, significantly reducing the warping and buckling phenomenon of the composite plate.

This application discloses a method for 3D printing aluminum alloy bearing cages, belonging to the field of cage production technology. The method includes the following steps: (1) preparing a matrix powder; (2) pretreating untreated SiC nanoparticles with nickel-phosphorus plating to obtain SiC nanoparticles coated with an average layer thickness of 60-100 nm nickel-phosphorus layer, mixing them evenly with the obtained matrix powder to obtain a powder, and then using laser powder bed 3D printing to perform layer-by-layer printing to obtain a preliminary blank; (3) heat-treating the preliminary blank to obtain the aluminum alloy cage. The aluminum alloy bearing cage prepared by adding SiC nanoparticles and using laser powder bed 3D printing has high hardness and good wear resistance, which not only extends the service life of the cage but also enables rapid short-term production of the cage.

This utility model provides a novel internal support mandrel for pipe bending, comprising: a mandrel body; an inner support core disposed on the inner side of the mandrel body; a connecting bolt disposed at one end of the inner support core; a through-bead threadedly connected to the outer side of one end of the connecting bolt; a spring disposed at the other end of the inner support core; and a screw threadedly connected to the inner side of the mandrel body. This novel internal support mandrel for pipe bending allows for adjustment of the position of the inner support core by rotating the through-bead, thereby changing the compression of the spring and flexibly adjusting the magnitude of the supporting force. In this way, the internal support mandrel can provide appropriate supporting force according to the needs of pipes with different diameters and bending angles, improving the accuracy of pipe bending.

This invention discloses a mold mechanism for an integral sunroof frame instead of a split sunroof frame, relating to the field of sunroof frame mold technology. It includes a rear template, a support plate, an ejector plate, and a clamping plate connected in sequence. The rear template is provided with split rear mold cores and positioning modules. The split rear mold cores include rear mold core one, rear mold core two, rear mold core three, rear mold core four, rear mold core five, and rear mold core six. The positioning module includes rear mold positioning mold one and rear mold positioning mold two. This application provides a mold mechanism for an integral sunroof frame instead of a split sunroof frame. A hydraulic cylinder drives a slider to move towards the cavity side, closing the side forming area of ​​the H-shaped product. Together with the split rear mold cores, it forms a complete H-shaped product forming cavity. The opening and closing of the side cavity is completed by the hydraulic cylinder-driven slider, with stable action response, adapting to the side forming requirements of H-shaped products. The structure of the split mold cores also reduces the contact resistance between the product and the mold cores, improving demolding smoothness.

The application discloses a semi-solid thixotropic die casting forming method of a narrow solid-liquid two-phase zone alloy, and comprises the following steps: step one: the narrow solid-liquid two-phase zone alloy is added into a heating device and heated to a superheating temperature, and after complete melting, the alloy is cooled for a certain time to obtain an alloy blank with a cast structure; step two: the alloy blank is added into an extrusion device to complete cold extrusion, and an alloy blank containing high-density dislocations and lattice distortion structures is obtained; step three: the alloy blank is heated for the first time, the heating temperature is set between a recrystallization temperature and a solidus temperature of the alloy, and isothermal heat treatment is carried out to obtain fine and uniform recrystallized grains; step four: the alloy blank is heated for the second time, the temperature is set above the solidus temperature of the narrow solid-liquid two-phase zone alloy, and isothermal heat treatment is carried out to obtain a semi-solid blank; and step five: the semi-solid blank is subjected to die casting forming. The application has the advantages that excellent castings with physical properties are formed.

This invention discloses a 5052 aluminum alloy cavity for semiconductor devices and its preparation method, relating to the field of aluminum alloy material technology. Specifically, it includes the following steps: S1: First, the 5052 aluminum alloy ingot undergoes a two-stage homogenization treatment, followed by a three-stage free forging process, and finally, spray cooling and air drying to obtain a shaped cavity substrate; S2: After plasma cleaning, the shaped cavity substrate is subjected to magnetron sputtering technology to sequentially deposit a transition layer, a barrier layer, and a functional layer on its inner surface to obtain the 5052 aluminum alloy cavity for semiconductor devices. The 5052 aluminum alloy cavity prepared by this invention can greatly ensure the stability and purity of the prepared aerospace semiconductors, meeting the manufacturing needs of high-performance chips for aerospace applications, and is of great significance.

The utility model provides a mould is used in bluetooth headset shell production relates to bluetooth headset technical field, including fixed base, the upside of fixed base is provided with headset shell production subassembly, the inside of fixed base is provided with the sliding slot, the lower side inside end of pouring inner bag is connected with the jacking rubber film, the downside of jacking rubber film is connected with the gas rod, the downside of gas rod is connected with the gas inlet pipe, through setting up headset shell production subassembly when pouring is completed and solidifies, through the gas inlet pipe injects gas to the gas rod, along with the gas rod upwardly lifts, the jacking rubber film will pour the headset shell in the inner bag and eject, realizes the quick stripping, and will extrude the shaping block and insert the inside of pouring inner bag through the upper cap, at this moment, the plastic solution is injected into the gap of pouring inner bag and extrusion shaping block through the glue injection port, and the air is discharged through the exhaust port, ensure that the plastic solution evenly fills, after cooling solidification, extrusion shaping block and headset shell are closely combined.

This invention discloses a primary and secondary mirror support structure, molding die, and method, relating to the field of primary and secondary mirror support technology for precision optomechanical systems. The primary and secondary mirror support structure includes a support cylinder, a mounting ring, a first mounting plate, a second mounting plate, and a third mounting plate. The support cylinder is made of continuous carbon fiber composite material, while the mounting ring, the first mounting plate, the second mounting plate, and the third mounting plate are made of chopped carbon fiber composite material. The primary and secondary mirror support structure is manufactured using an integrated molding method, effectively avoiding the use of metal embedded parts, improving the accuracy and stability of the device, and reducing weight. This invention provides a matching molding die and method for the support structure, enabling integrated molding of the primary and secondary mirror support structure, eliminating the need for separate molding of individual components and subsequent assembly, improving molding efficiency and accuracy, shortening the production cycle, and effectively reducing production costs.

The application discloses a hot forging process for a 7-series aluminum thin material product with a thick-thin gap structure. The application introduces a new process path of "pre-fabricated compensation deformation and partition collaborative control", effectively solves the problem of shear stress concentration and cracking at the junction caused by the mismatch of deformation capacity of the thick-thin area of the aluminum thin material in the background technology, and provides a systematic solution for the limit thin-wall forging of the 7-series aluminum. The stability of the extreme thin-wall structure in the forming and phase change process is ensured, so that the 7-series aluminum can be reliably forged to about 0.5mm thickness without cracking.

This application provides a method and system for analyzing pressure deformation data of high-strength continuously stamped parts for automobiles, relating to the field of stamping forming technology for automotive parts. It solves the technical problems in existing technologies where high-strength continuously stamped parts are prone to cracking, wrinkling, poor flatness, and die interference, and where pressure deformation stability and production safety are difficult to guarantee. The method includes: real-time acquisition of multi-source data from the stamping production line, including mechanical data of the stamping process, die state data, strip position images, feeding mechanism motion parameters, and material deformation image data; extraction of temporal characteristic parameters of the pressure deformation behavior of the part during continuous stamping, and inputting them into a pre-trained defect prediction model to obtain prediction results of the type and risk level of potential forming defects in the current stamping batch; dynamic generation of process adjustment suggestions through a process parameter optimization model, and feedback to the stamping production line control system. This application is used in the process of analyzing pressure deformation data of high-strength continuously stamped parts for automobiles.

The invention belongs to the technical field of laser cutting, and particularly relates to a high-precision three-dimensional laser cutting machine which comprises a placing frame, a moving assembly arranged on the upper side wall of the placing frame, and a laser cutting head connected to the moving end of the moving assembly, and the clamping assembly is arranged on the upper side wall of the containing frame and located on the left side of the laser cutting head, the clamping end of the clamping assembly is connected with a square pipe, and the square pipe is located below the laser cutting head. When the three-dimensional laser cutting machine is used for cutting the square pipe, the inner walls of the edges and corners of the pipe are coated with the heat absorption coating in advance, redundant laser energy gathered at the edges and corners can be effectively absorbed, the phenomena of local heat concentration, overburning and melting collapse are reduced, meanwhile, damage of laser reflection to a cutting head and a light path is reduced, the problems of notch burrs and slag adhering are solved, and the service life of the cutting head is prolonged. And the square tube corner angle cutting section quality and size precision are improved.

The utility model provides an automobile covering part forming die which comprises a base, four supporting columns, a top supporting plate and an electric hydraulic cylinder, the four supporting columns are fixed on the periphery of the upper surface of the base, the top supporting plate is fixed on the tops of the supporting columns, a lower die is further arranged on the base, a die cavity is formed in the lower die, and the electric hydraulic cylinder is arranged in the die cavity. A die holder is arranged in the die cavity; two telescopic rods are symmetrically arranged at the output end of the electric hydraulic cylinder, the telescopic rods penetrate through the top supporting plate, a mounting plate is arranged at the tail ends of the telescopic rods, an upper mold is arranged at the lower end of the mounting plate, and pressing devices are symmetrically arranged on the two sides of the upper mold. The pressing device is used for pressing a workpiece in the stamping process, the workpiece can be tightly pressed on the lower die in the stamping process by arranging the pressing device, the workpiece is effectively prevented from moving, the forming precision of the automobile covering part is greatly improved, and the product quality is guaranteed.