37 results about "Hydroforming" patented technology

The invention provides a corrugated pressure diaphragm and a manufacturing method thereof.The corrugated pressure diaphragm is formed by a flat plate in a hydraulic mode, stainless steel or elastic alloy can be selected as a material, and the manufacturing method comprises the steps of solid solution heat treatment, cleaning and drying, blanking, cleaning and drying, forming, cleaning and drying, outer circle turning, cleaning and drying, quenching, cleaning and drying, tempering and cleaning and drying. And detecting hardness and grain size. The invention provides a sensitive element which is small in size and resistant to vibration, and meanwhile provides a specific manufacturing method of the sensitive element.

A tube expansion method of a tubular material includes extruding a tubular material in which a hollow is formed, inserting the tubular material into a cavity of a mold corresponding to a shape of a part to be manufactured, and performing hydroforming by injecting a pressure medium into the hollow of the tubular material at a predetermined pressure or higher, wherein a tubular material extruded through the extruding step has portions with different thicknesses along the circumferential direction. Tube expansion of the tubular material with different cross-sectional sizes in one piece is possible.

This invention discloses a hydraulic forming device for a cab roof crossbeam, belonging to the field of hydraulic forming technology. It aims to solve the technical problem that due to the complex structure and numerous curvatures of the crossbeam, it is difficult to completely drain the forming fluid at low water levels. The device includes a fixed mold assembly and a moving mold assembly. The fixed mold assembly includes a base, with a fixed template installed in the inner cavity of the base. The top of the fixed template has a mold closing groove, a pressure groove, and a cavity. The moving mold assembly includes a lifting seat, with a moving template installed at its bottom. The bottom of the moving template has a mold closing plate, a pressure plate, and a forming fluid cavity. A punching assembly is arranged inside the moving template, including a lifting platform above the moving template and a draining rack inside the forming fluid cavity. The bottom of the lifting platform is connected to multiple round-hole punches and multiple square-hole punches, and the draining rack has a drainage channel inside its cavity. This invention not only achieves complete drainage of the forming fluid but also provides the advantage of continuous punching processing of the crossbeam.

This invention discloses an ultra-high strength hydroformed structural component and its manufacturing process, comprising the following steps: First, an aluminum-silicon coated aluminized hot-formed steel pipe is selected to form a welded pipe, and the substrate of the structural component is obtained by hydroforming; Second, a pretreatment system is established for the substrate before heating, and the substrate from step one is transferred into the solution in the pretreatment system and immersed; Third, the pretreated substrate is placed in a heating furnace at - degrees Celsius, so that the solution forms carbides under high temperature, and the substrate is removed after being heated to the set temperature; Fourth, the substrate from step three is placed in a mold with a water flow cooling function, and the upper and lower molds are pressed together to quickly cool and quench the pipe. This invention relates to the field of industrial production technology. This invention can form carbides in the substrate under high temperature through immersion in the solution, without forming oxides, which greatly improves the structural strength of the structural component.

A novel automotive suspension control arm includes a control arm body. The upper and lower ends of the control arm body are respectively connected and fixed to a ball joint pin assembly and a bushing assembly. The middle section of the control arm body is connected and fixed to a central bushing assembly. The control arm body is an integral arc-shaped hydroformed tubular component. The height of the tubular body at both ends is less than the height of the middle section. The cross-section of the end connected to the bushing assembly is a variable cross-section, wider at both ends and thinner in the middle. The control arm body is manufactured using bending, shrinking, pre-forming, internal high-pressure forming, and laser cutting processes, resulting in a structure different from traditional stamping and welding. This control arm product offers stable dimensional accuracy, a simple manufacturing process, and solves the problem of ensuring welding gap in stamping and welding structures.

A hydroforming method for an ellipsoidal container under combined hydrostatic load and rotational load, the method comprising: Step 1, determination of an initial lantern-shaped single-curvature thin shell member: Select an appropriate segmenting scheme; determine the size of the pole plate and fabricate the initial single-curvature thin shell; Step 2, fix the initial single-curvature thin shell using a fixture, and fix near the weld with relatively small displacement between the fixture and the thin shell during the bulging process and achieve soft contact by relying on a jacket, so as to drive the ellipsoidal shell to rotate and reduce the limitation on deformation during the rotational bulging of the ellipsoid; Step 3, rotate the fixture and gradually increase the rotational speed, and increase the hydrostatic pressure during the process of increasing the rotational speed, ensure that the hydrostatic pressure and the rotational pressure increase linearly synchronously, and after the loading reaches the total load, keep it stable for a certain time to make it fully deformed and then unload to obtain the bulged ellipsoidal container. The present invention realizes the forming of an ellipsoidal shell structure with a high axial length ratio by changing the stress state of the spherical shell using a non-uniformly distributed hydraulic load.

Disclosed herein are methods for hydroforming a handpan shell. Hydroforming a handpan shell using a mold complementary to the intended shape of the handpan shell can improve the quality and performance of the handpan while reducing the time and cost needed to form features into the handpan that allow musical tones to be produced.

The invention relates to the technical field of automobile part forming, in particular to a precise cold forming method and device for an ultrahigh-strength steel special-shaped section automobile safety part. Continuous rolling, high-frequency induction welding, multi-roller correction, precise punching and multi-direction bending forming are organically combined; integrated and continuous precision production from plates to complex space pipe fittings is achieved, the defects that in a traditional segmented tailor-welding process, the working procedures are tedious, weld joints exist, the hydraulic forming technology efficiency is low, and springback is difficult to control are effectively overcome, and therefore it is guaranteed that products have excellent structural integrity and dimensional precision, and the production efficiency is improved. The production efficiency and the material utilization rate are remarkably improved, and the production cost is reduced.

This invention discloses a hydraulic forming apparatus and method for flanged pipe fittings, including a pipe, a worktable, and a forming device. The forming device is fixedly installed on the worktable. After the forming device closes the mold, it forms a groove with a flange. The pipe is placed in the groove and processed to form the flange. An inner mold of the forming device is provided inside the pipe. This process produces integral hollow components with flanges with simple procedures, reducing production costs and improving production efficiency. During the forming process, the workpiece weight remains unchanged. Through reasonable structural design, the workpiece weight obtained using this invention is lower than that of stamped and welded workpieces. This invention can directly form single-sided assembly flanges, thereby improving material utilization and reducing material waste.

The present invention relates to a method and a device for manufacturing a hollow part made of composite material, based on a step of shaping the hollow part from said draped preform (PD) by injecting a heat transfer fluid (F) under pressure inside said draped preform, previously placed in a hermetically sealed mold (M), so as to force said draped preform to expand radially towards the walls of the mold until the prepreg ply of the preform fits the walls of the mold. Figure for abstract: Figure 1

A forming assembly for forming a wick is disclosed. The forming assembly includes a tube inflatable to an inflated configuration. A wick mesh is configured to be wrapped about the tube. The forming assembly further includes a sheath positionable about the tube and the wick mesh. The tube and the sheath are configured to compress the wick mesh and form the wick based on the tube inflating towards the inflated configuration.

The invention relates to the technical field of hydraulic forming, and provides a hydraulic forming device and method, and the hydraulic forming device comprises a hydraulic station, an internal high-pressure forming die and a locking hydraulic cylinder. The hydraulic station provides a power source for the whole hydraulic system and controls the pressure and flow of hydraulic fluid. The internal high-pressure forming die comprises an upper die and a lower die, the upper die and the lower die define a forming cavity, the forming cavity is communicated with a forming die pressure cylinder, the forming die pressure cylinder is connected with the hydraulic station, and a locking hydraulic cylinder is arranged on the side, away from the forming cavity, of the upper die and / or the lower die. And the locking hydraulic cylinder is configured to be used for driving the upper die and the lower die to be closed, the locking hydraulic cylinder is connected with the hydraulic station, and the pressure of a hydraulic rod of the locking hydraulic cylinder is larger than the internal pressure of the forming cavity. The manufacturing cost of the locking hydraulic cylinder is far lower than the high equipment investment of a traditional internal high-pressure forming mode, and the equipment cost of a manufacturing enterprise is remarkably reduced.

This invention relates to the field of metal plastic forming technology, and particularly to a W-shaped sealing ring hydraulic external expansion forming device and method. The device includes a primary and a secondary mold assembly. The core of the primary mold assembly lies in its unique "two concave and one convex" transition structure, which utilizes a large radius of curvature to guide the flow of difficult-to-deform materials and forcibly forms an intermediate boss as a self-generated positioning reference for the secondary machining, completely eliminating clamping eccentricity. The secondary assembly employs removable pads in conjunction with elastic reset elements to construct a dynamic mold closing mechanism, achieving a composite process of "low-pressure hydraulic pre-expansion positioning and high-pressure precision shaping," effectively overcoming the significant springback problem of pure hydraulic forming. By decomposing complex forming into two controllable steps, it significantly solves the problems of cracking and dimensional inconsistencies in thin-walled high-temperature alloy parts, greatly improving the coaxiality, wall thickness uniformity, and fatigue life of the finished product. It is suitable for the efficient and precise manufacturing of high-end sealing components for aero-engines.

The application provides a part rubber bag hydraulic forming method, and belongs to the technical field of rubber bag hydraulic forming. The method comprises the following steps: firstly, designing a preliminary process model suitable for rubber bag forming of an irregular complex hyperboloid part with large deformation; secondly, designing a final process model suitable for rubber bag forming of the part with resilience; thirdly, determining an unfolded raw material according to the final process model with resilience; then, performing rubber bag hydraulic forming to form a process model structure workpiece; if the raw material of the part is an aluminum alloy, performing quenching heat treatment on the process model structure workpiece, and then using a cutting die to correct the shape; finally, fixing the process model structure workpiece on the cutting die, removing the process allowance, and cutting the part. Through the method, the part shape accuracy and the part surface quality can be improved, the part consistency can be improved, and the waste product rate can be reduced.

The invention relates to the field of metal pipe forming, in particular to a pipe hydroforming two-stage pressurization shaping device and method. The problems of large pressure value output capacity and large pressure fluctuation in a small pressure stage of existing supercharging equipment and method are solved. The device provided by the invention can meet the requirements of large pressure output capacity and small pressure value accurate control, and meets the requirement of pipe hydroforming. Only by manufacturing the two-stage pressurizing structure on the punch, the low-cost pressurizer with the small pressure output capacity can meet the requirement for large pressure in the shaping stage of the last stage of pipe hydroforming, and high-cost pressurizing equipment with the large output capacity is not needed. The device and the method are simple in structure and easy to implement.

The utility model relates to the technical field of hydraulic forming, and discloses an internal pressurizing type hydraulic forming machine which comprises a base, a first mold fixedly installed at the top end of the base, a first mold groove formed in the first mold, a first telescopic rod fixedly installed at the top end of the base, and a second telescopic rod fixedly installed on the side, away from the first telescopic rod, of the top end. A second mold is fixedly mounted at the top end of the second telescopic rod, a second mold groove is formed in the top end of the second mold, a material injection pipe is fixedly mounted on the side edge of the second mold, a control valve is fixedly mounted at the other end of the material injection pipe, an exhaust hole is fixedly formed in the top of the material injection pipe, and an exhaust valve is fixedly mounted at the middle end of the exhaust hole; a hydraulic rod is fixedly installed at the bottom end of the top plate, and a pressurizing plate is fixedly installed at the bottom end of the hydraulic rod. According to the device, through an internal pressurization mode, liquid is fully formed in internal corner areas, and the machining quality is kept.

The present invention relates to the technical field of small-round-corner parts, and provides a hydroforming device and method for small-round-corner parts, which are used to form a sheet metal into a shell part, including: a punch, connected to the first downward pressing arm of a press, a through hole is formed on the bottom surface of the punch, and the through hole is used to convey hydraulic oil to the lower part of the bottom surface of the punch, a sealing ring is arranged on the bottom surface of the punch, and the sealing ring is arranged around the through hole; a plurality of side push plates, the plurality of side push plates enclose a cavity with a set shape, a distance is provided between the plurality of side push plates, and the plurality of side push plates are adapted to move towards the cavity simultaneously by the press; a plurality of blocking structures, arranged in one-to-one correspondence with the plurality of side push plates, and the blocking structures are used to prevent the side push plates from moving away from the cavity; and a bottom push plate, the bottom push plate is arranged in linkage with the plurality of side push plates, so that when the plurality of side push plates move towards the cavity simultaneously, the bottom push plate moves upward simultaneously.

A method for integrally forming a head tube and down tube of a bicycle frame, which involves the use of a single metallic material (1) and the application of various metalworking methods to integrally form the head tube (12) and down tube of the bicycle frame. To meet the structural strength requirements of the head tube (12) and down tube (23), several metalworking processes are employed, including forging, tube drawing, tube shrinking, and hydraulic forming. The method reduces welding and intermediate assembly and improves the precision and structural strength of the product. The method also saves material and effectively reduces production management and material costs, thereby significantly increasing the competitiveness of the products.

A method of producing an integrated monolithic aluminum structure, the method includes the steps of: (a) providing an aluminum alloy plate with a predetermined thickness of at least 38.1 mm, wherein the aluminum alloy plate is a 7xxx-series alloy provided in an F-temper or an O-temper; (b) optionally pre-machining of the aluminum alloy plate to an intermediate machined structure; (c) high-energy hydroforming of the plate or optional intermediate machined structure against a forming surface of a rigid die having a contour in accordance with a desired curvature of the integrated monolithic aluminum structure, the high-energy hydroforming causing the plate or the intermediate machined structure to conform to the contour of the forming surface to at least one of a uniaxial curvature and a biaxial curvature; (d) solution heat-treating and cooling of the high-energy hydroformed structure; (e) machining and (f) ageing of the final integrated monolithic aluminum structure.

The invention discloses a manufacturing method and device for a hot-formed high-strength steel pipe beam. The manufacturing method comprises the following steps that firstly, hot-formed steel with an anti-oxidation coating on the surface is selected as a raw material; 2, forming the tubular blank by adopting an internal high-pressure forming process to obtain a tubular beam close to a target shape; thirdly, the tubular beam obtained after hydraulic forming is heated to the temperature ranging from 650 DEG C to 950 DEG C; and fourthly, the heated pipe beam is pressurized and shaped, meanwhile, rapid cooling is conducted, and phase change strengthening is completed. According to the method, the mechanical property uniformity and the surface integrity of the pipe beam piece after hot forming are effectively improved, surface oxidation is not generated, the hydrogen embrittlement sensitivity is reduced, and the dimensional stability is guaranteed. And meanwhile, the technological process is compact, the production efficiency can be improved, and technical support is provided for large-scale manufacturing of high-safety light-weight structural parts.

A forming assembly for forming a wick is disclosed. The forming assembly includes a tube expandable to an expanded shape. A wick mesh is configured to be wrapped around the tube. The forming assembly further includes a sheath positionable around the tube and the wick mesh. The tube and sheath are configured to compress the wick mesh and form the wick upon expansion of the tube to the expanded shape.

The present application relates to the technical field of metal plastic forming, and particularly relates to a W-shaped sealing ring hydraulic outer-expanding forming device and method. The device comprises a first-order and a second-order die assembly, and the core lies in a unique 'two concave and one convex' transition structure of the first-order cavity, which guides the flow of difficult-to-deform material by using a large curvature radius, and forcibly forms an intermediate boss as a self-generated positioning reference for the second-order processing, thereby completely eliminating clamping eccentricity. The second-order assembly adopts a removable pad matched with an elastic reset element to build a dynamic die closing mechanism, realize a composite process of 'low-pressure liquid auxiliary pre-expanding positioning and high-pressure machine precise sizing', and effectively overcome the large springback problem of pure hydraulic forming. The complex forming is decomposed into two controllable steps, thereby significantly solving the problems of rupture and size inconsistency of high-temperature alloy thin-walled parts, greatly improving the coaxiality, wall thickness uniformity and fatigue life of the finished product, and being suitable for efficient and precise manufacturing of high-end sealing parts of an aero-engine.

This application provides a drive axle housing, a vehicle, and a hydroforming process for the axle housing. The axle housing includes a central axle section and sleeve sections extending to both sides from the axle section. The sleeve sections and the axle section are integrally hydroformed. One end of the axle section is a bulge, and the opposite end has an insertion port for the main reducer. The bulge has a spherical wall, and a portion of the spherical wall has a flat portion and / or an arcuate portion. This application, through the design of the bulge of the axle section, achieves both bulging and clearance purposes, while also enabling the hydroforming process to successfully produce the desired product. Compared to the welding methods mentioned in the background art, the axle housing formed by this application obviously reduces the waste of welding processes, eliminates fatigue cracking problems caused by welding defects, and, compared to axle housings formed by welding or casting, the axle housing provided by this application has a significant weight reduction effect.

The invention relates to the technical field of new energy automobiles, and discloses a hydraulic forming method of a liquid cooling plate for a new energy automobile battery, comprising the following steps: S1, designing and manufacturing a mold; s2, mold installation; s3, pre-pressing is carried out; s4, injecting and sealing a liquid medium; s5, pressurizing and forming; and S6, pressure relief and part taking-out are conducted, liquid serves as a force transmission medium, pressure can be more evenly transmitted to all parts of the metal plate, the problems of uneven pressure, uneven material flowing and the like possibly occurring in a traditional punching process are solved, and therefore the geometric dimension precision and the surface quality of the liquid cooling plate body are greatly improved; the mold comprises the first water injection port, the second water injection port and the liquid flowing groove, it is ensured that a mold cavity can be smoothly filled with a liquid medium, the forming accuracy is further improved, in the hydraulic forming process, the metal plate is subjected to plastic deformation under the action of liquid pressure, and complex shapes and uniform wall thickness distribution can be formed.

The utility model discloses a feeding device of hydraulic forming equipment, which belongs to the technical field of feeding devices and comprises a vehicle body, a plurality of trundles are arranged at the bottom of the vehicle body, two limiting plates are arranged at the front end of the vehicle body, and C-shaped grooves with downward openings are formed in the lower ends of the limiting plates. The plurality of guide sliding rods are connected to the two limiting plates; two positioning plates; a workpiece is preliminarily positioned through the C-shaped groove, the double-output-shaft motor drives the two lead screws to rotate to drive the positioning plate to slide along the guide sliding rod, the two ends of the workpiece are sleeved with the positioning holes to complete workpiece positioning, and at the moment, the water injection gun is inserted into the workpiece; the water pump pumps the liquid in the water tank to the water injection gun and injects the liquid into the workpiece, liquid pre-injection of the workpiece with a large closed cavity is achieved, it is avoided that hydraulic forming equipment injects the liquid into a narrow opening of the workpiece for a long time, working hours are saved, and the machining efficiency of hydraulic forming is improved.

The application provides a hydraulic forming method and device for a large-diameter metal sealing ring of an aero-engine. The forming method utilizes a circular pipe blank to limit the action area of liquid pressure, thereby greatly reducing the locking force and feeding load required for forming the large-diameter sealing ring. The forming device comprises a left blank fixing die, a right blank fixing die, an upper core die, a lower core die, a left movable die, a left forming slider, a right movable die, a right forming slider and a positioning block. The forming die device has a simple structure and is convenient to disassemble and assemble, and can form a large-diameter metal sealing ring by using a smaller load. The diameter of the large-diameter sealing ring is greater than 600 mm, the forming blank used is a circular pipe blank, the sealing structure of the forming die can be simplified, the locking load is reduced, the blank can bear a larger shaping pressure, and the size precision of the sealing ring part is improved.

The sealing head comprises a sealing head body, a liquid injection hole is formed in the sealing head body, the sealing head body comprises an insertion section, a sealing section and an external section, the insertion section is used for being inserted into the pipe end of a part, the sealing section is used for connecting the insertion section with the external section, and the sealing section is used for sealing the external section. The sealing section is arranged in a circular frustum shape, the diameter of the sealing section is gradually reduced in the liquid flowing direction, and when the inserting section is inserted into the part pipe end, the sealing section enters the part pipe end and extrudes the inner wall of the part pipe end to form sealing. A multi-conical-surface sealing structure is adopted, surface contact of steps is avoided through line contact, and a conical included angle has a certain centering function, so that the pressure is uniform, the axial self-tightening force is small when a sealing head retreats after the process is completed, and the service life is greatly prolonged.

The present invention discloses a processing method for a special-shaped cup body. The special-shaped cup body includes a cup body and a cup bottom made of a metal material. A concave portion is provided on the side wall of the cup body, and the cup bottom is fixedly connected to the bottom of the cup body. The processing steps include: S1 pipe pressing, S2 hydroforming, S3 bottom cutting, S4 necking, S5 head cutting, S6 thread rolling, and S7 bottom welding. For S1 pipe pressing, a pipe press is used to process and form the concave portion on the side wall of the cup body by rolling. The processing method for the special-shaped cup body of the present invention is simple to implement, and can greatly deepen the concave depth of the concave portion of the cup body, and can increase the depth by 100% compared with the prior art process.