51 results about "Hydroforming" patented technology

The invention discloses a curved-surface cylindrical part hydraulic forming device and method, and relates to the technical field of cylindrical part forming, the curved-surface cylindrical part hydraulic forming device comprises a die and a pressurization system, and the die comprises a male die and a female die; the female die is annular, at least part of the male die can be arranged in the female die, an annular gap between the male die and the female die is used for containing a barrel blank, a forming curved surface is constructed outside the male die or in the female die, and under the state that the barrel blank is placed, a closed inner cavity is formed between the male die and the barrel blank, and a closed outer cavity is formed between the female die and the barrel blank. The forming curved surface is a cavity wall of the inner cavity or the outer cavity; fluid channels communicated with the inner cavity or the outer cavity are formed in the male die and the female die; the pressurization system is used for filling pressure fluid into the inner cavity and the outer cavity and controlling the pressure difference between the outer cavity and the inner cavity, the invention further provides a curved-surface cylindrical part hydraulic forming device and method, and the forming size precision of the multi-layer rotary cylindrical part with the curved generatrix characteristic can be improved.

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.

The invention provides a hydraulic forming method and device for a large-diameter metal sealing ring of an aero-engine. According to the forming method, the action area of the liquid pressure is limited through the round pipe blank, and therefore the mold clamping force and the feeding load needed by forming of the large-diameter sealing ring are greatly reduced. 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 sliding block, a right movable die, a right forming sliding block and a positioning block. The forming die device is simple in structure and convenient to disassemble and assemble, and the large-diameter metal sealing ring can be formed through small loads. The diameter of the large-diameter sealing ring is more than 600mm, and a used forming blank is a round tube blank, so that the sealing structure of a forming die can be simplified, the die locking load can be reduced, the blank can bear higher shaping pressure, and the size precision of a sealing ring part can be improved.

The invention discloses a single-point increment composite hydraulic forming device which is used for simultaneously forming thin-wall parts with complex shapes with concave-convex characteristics in one-time clamping and comprises single-point increment forming equipment and hydraulic bulging equipment, the single-point increment forming equipment comprises an oil cavity cylinder with an opening in the top, and an upper end cover is arranged on the end face of the top end of the oil cavity cylinder; the middle of the upper end cover is hollow, the edge of a to-be-formed plate is located between the top end of the oil cavity barrel and the upper end cover, a forming tool is arranged above the to-be-formed plate, and the oil cavity barrel is connected with hydraulic bulging equipment. By means of the method, the parts with the concave-convex characteristics and the complex shapes can be formed at the same time in one-time clamping, a mold does not need to be used in the forming process, the number of forming tools does not need to be increased, the sizes and shapes of the forming tools do not need to be replaced, and plates do not need to be turned over.

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 forming assembly configured to form a wick is disclosed. The forming assembly includes an expandable tube and a forming shell assembly. The expandable tube is hydraulically expandable to an expanded configuration. A wick mesh is configured to be wrapped about the expandable tube. The forming shell assembly includes a first forming shell comprising a first recess defined therein and a second forming shell comprising a second recess defined therein. The first recess and the second recess cooperate to define an outer diameter of the wick. The expandable tube and the wick mesh are positionable between the first recess and the second recess. The expandable tube and the forming shell assembly are configured to deform the wick mesh and form the wick based on the expandable tube hydraulically expanding towards the expanded configuration.

The utility model provides a fully-extruded aluminum alloy auxiliary frame adopting a hydraulic forming technology, which comprises an auxiliary frame body, all parts of the auxiliary frame body are made of aluminum extruded profiles, cross beams of the auxiliary frame body are a front cross beam, a middle cross beam and a rear cross beam in sequence from front to back, and two longitudinal beams are symmetrically arranged. One end of each longitudinal beam is connected with the bottom of the front cross beam, the other end of each longitudinal beam is connected with the rear cross beam, the bottom surface of the middle of each longitudinal beam is lower than the bottom surfaces of the two ends, the bottom surface of one end, connected with the front cross beam, of each longitudinal beam is lower than the bottom surface of the other end, an extruded arc is arranged at the other end of each longitudinal beam, and the outer arc surface of each arc is close to the other longitudinal beam; a front swing arm installation support is arranged in the middle of the longitudinal beam. All parts of the auxiliary frame are made of aluminum extruded profiles, a certain curved surface and radian design is completed, and the auxiliary frame has good metallographic structures and mechanical properties; all aluminum alloy parts are connected by adopting a welding process, and the assembly surface and the mounting hole site are machined through an assembly machine after welding is completed, so that the assembly precision is ensured; after assembly welding of the auxiliary frame is completed, aging treatment is carried out, and the mechanical property of the auxiliary frame can be greatly improved; the auxiliary frame is a two-wheel-drive auxiliary frame.

The invention provides a hydraulic forming die and method for a different-direction S-bent-edge partition plate type sheet metal part. Flanging lightening holes are distributed in a web plate face of the partition plate type sheet metal part, the two sides of the partition plate type sheet metal part are shape-following different-direction bent edges in lap joint with a skin, the longitudinal section of the partition plate type sheet metal part is approximately in an S shape, and the partition plate type sheet metal part has the advantages of being complex in structure, multiple in turned edge and semi-closed. Based on the structural characteristics of the parts, the hydraulic forming method and the die structure of the anisotropic S-bent-edge partition plate type sheet metal parts are provided, and the using method comprises the following steps that a combined die with an elastic mechanism is manufactured according to the part structures and used for integrally forming the parts, and part unfolding materials are placed on a mold tire 2; when the movable pins 5 on the two sides of the part are used for positioning and a hydraulic machine transmits pressure downwards, the cover plate 1 and the mold 2 press the blank tightly, the elastic mechanism, namely the cylindrical spiral compression spring 6 is compressed, the mold 2 is attached to the groove of the base 3, and the bent edges on the two sides of the part are formed at a time.

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 utility model discloses a deburring device for machining a hydraulic forming die of an automobile rear beam plate, which belongs to the technical field of machining and comprises an operation table, an auxiliary rolling mechanism, a grinding transmission mechanism, a grinding mechanism and a polishing mechanism. The auxiliary rolling mechanism extends to the top of the operation table, the grinding transmission mechanism, the grinding mechanism and the polishing mechanism are all installed on the top of the operation table, and the grinding transmission mechanism is connected with and drives the grinding mechanism. Through the action of the auxiliary rolling mechanism installed in the operation table, a machined part can move on the operation table, the grinding transmission mechanism is connected with the grinding mechanism and drives the grinding mechanism to remove burrs on the machined part, the grinding mechanism adjusts the distance between the grinding mechanism and the auxiliary rolling mechanism, and then the requirement for deburring of machined parts of different models is met; and the production cost of the product is reduced, and the capital investment of an enterprise is reduced.

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.