86results about "Extrusion mandrels" patented technology

The invention discloses an extrusion forming device and method, the extrusion forming device comprises an extrusion container assembly, a mold assembly and an extrusion assembly, the extrusion container assembly is provided with at least two mutually independent blank cavities, and the cross section of at least one blank cavity is non-circular; the mold assembly comprises a gradual change type flow channel structure, a welding chamber structure and a mold outlet structure, the gradual change type flow channel structure comprises at least two mold flow channels, and the inlet ends of the at least two mold flow channels are in butt joint with the outlet ends of the at least two blank cavities in a matched mode; the at least two mold runners are used for carrying out plastic deformation on the metal blanks in the blank cavities and guiding the metal blanks to the welding chamber structure, and the welding chamber structure is used for carrying out interface welding on metal from the different mold runners; and the extrusion assembly is used for extruding the metal blanks in the at least two blank cavities. The extrusion force can be obviously reduced, the material flow uniformity is improved, the die complexity and material waste are reduced, the profile forming quality is improved, and the service life of the die is prolonged.

The invention aims to provide a device and a method for preparing a fine-grain magnesium alloy pipe, and belongs to the technical field of light metal plastic forming. Differential torsion and continuous shear deformation are generated in the machining process of a magnesium alloy pipe blank, grain refinement and texture weakening are achieved while the torsion direction of the blank is not changed, and the yield of the fine-grain magnesium alloy pipe is improved. Room-temperature mechanical properties of magnesium alloy pipes are improved, and the magnesium alloy application range is widened. By means of the method, the grain refining effect of the magnesium alloy pipe is more remarkable, the basal texture is weakened to a large extent, the obtained fine-grain magnesium alloy pipe is uniform in structure, and the obdurability is greatly improved.

A method for preparing a shear-assisted extruded material from a powder billet is provided, the method comprising providing a billet of material in substantially powder form; applying both axial and rotational pressure to the material to deform at least some of the contacted material; and extruding the material to form an extruded material. A method for preparing shear-assisted extruded material is provided, the method comprising applying both axial and rotational pressure to stock material to form an extruded material at a rate between 2 and 13 m / min. A method for preparing shear-assisted extruded material is provided. The method comprises applying both axial and rotational pressure to stock material to form an extruded material; and aging the extruded material for less than 3 hours. A method for preparing shear-assisted extruded material is provided. The method comprises providing a stock material for shear-assisted extrusion; and applying both axial and rotational force to the stock material to form an extruded material, wherein the axial force does not decrease during the extrusion.

The asymmetric hollow profile extrusion forming device comprises an extrusion wheel, a male die and a female die, the female die comprises a feeding port, an expansion cavity, a containing cavity and a forming notch which are sequentially communicated, and a blank is guided to flow towards the containing cavity through the expansion cavity; the male die comprises a flow dividing assembly and a core rod, the flow dividing assembly is movably connected into the expansion cavity, a flow dividing top end used for dividing the blank at the starting end of the expansion cavity is formed at the top of the flow dividing assembly, and the dividing point position, corresponding to the feeding port, of the flow dividing top end is adjustable, so that the dividing proportion of the blank divided by the flow dividing top end can be adjusted; one end of the core rod is used for being matched with the inner side wall of the forming notch to form a forming channel of the hollow profile. By the adoption of the single-rod feeding mode, machining of the asymmetric hollow profile can be completed only by locally adjusting the position of the flow dividing assembly and not adaptively modifying the whole machining system according to different machining specifications every time, the equipment cost is effectively reduced, and the machining efficiency is improved.

A method for forming an air return pipe, comprising: controlling a blank (26) to enter a forming cavity, controlling a die core (23) to press the blank (26) such that the blank (26) passes through a first die body (21), and obtaining a first length value of a first formed pipe section formed by the first die body (21); determining that the first length value reaches a first set parameter value, controlling a second die body (22) to press part of the first formed pipe section such that the part of the first formed pipe section is formed into a second formed pipe section, and obtaining a second length value of the second formed pipe section; determining that the second length value reaches a second set parameter value, and controlling the second die body (22) to stop pressing; and controlling a third formed pipe section formed by the first die body (21) to reach a third set parameter value. A forming die (20), comprising the die core (23), the first die body (21) and the second die body (22), wherein the forming cavity is formed between the die core (23) and the first die body (21), the second die body (22) is arranged on one side of a discharge end of the first die body (21) and is provided with a protrusion (223) facing a center of the second die body (22). An air return pipe (10), comprising a first pipe section (11), a second pipe section (12) and a third pipe section (14) which are formed by pressing, wherein the second pipe section (12) is located between the first pipe section (11) and the third pipe section (14), the second pipe section (12) is provided with an accommodation portion, and the accommodation portion is recessed towards a center of the second pipe section (12) and extends in an axial direction of the second pipe section (12). The plurality of pipe sections having different cross-sectional shapes are continuously pressed, so that the plurality of pipe sections are integrally formed, thereby eliminating welding spots between every two adjacent pipe sections, and reducing the leakage risk of the air return pipe.

The invention provides a hollow profile manufacturing extrusion die and a hollow profile. A hollow profile manufacturing extrusion die (3) includes a mandrel (41) that molds an inner peripheral surface of a hollow portion, and a bridge (45) for supporting the mandrel (41). The mandrel (41) is provided so as to correspond to a die hole for molding the outer peripheral surface of the hollow profile. A bridge (45) is provided at a position corresponding to the hollow between the hollow portion and the side surface, and is not present at a position corresponding to the hollow portion and the lower surface.

A continuously adjustable pipe-reducing device, and a continuous forming method for a pipe fitting. The continuously adjustable pipe-reducing device comprises a first roller and a second roller, which are connected to a driving mechanism, wherein the first roller is located directly above the second roller; a first mold cavity is provided on the side wall of the first roller in the circumferential direction of the first roller; a second mold cavity is provided on the side wall of the second roller; the first roller is rotationally arranged on a shaft seat; and the shaft seat is connected to a lifting driving mechanism by means of a displacement control rod. The perimeter of the cross section of a pipe fitting can be changed by means of the vertical movement of the first roller and the relative rotation between the first roller and the second roller, and the pipe fitting having different perimeters at different parts can be produced by means of only one set of rollers; thus, the continuously adjustable pipe-reducing device occupies a small space, and is convenient to control. Connecting portions are fixedly provided on two sides of the first mold cavity, the connecting portions are arranged in the circumferential direction of the first roller, and the connecting portions are inserted in the second mold cavity; and when the position of the first roller is changed, the effective connection between the first mold cavity and the second mold cavity can be ensured without a gap, thereby realizing the continuous forming of the pipe fitting with different diameters / shapes.

Shear-assisted extrusion devices, tools, inserts, and / or methods are provided. The devices may include an extrusion receiving channel operably engaged with the tool to receive the extruded material and one or more openings aligned between the ends of the spindle and configured to deliver a fluid to the extruded product. An exemplary tool may include one or more openings aligned between the ends of the tool. An exemplary method may include quenching the plasticized feed material prior to exiting the spindle. A spindle assembly and / or tool assembly insert is also provided, which may include a sleeve extending into one or both of the spindle assembly or tool assembly of the device and an opening in the sleeve configured to deliver a fluid into one or both of the receiving channels of the spindle assembly or the tool assembly.

The invention provides hot extrusion forming equipment for I-shaped aluminum alloy profile production, and relates to the technical field of aluminum alloy forming machining. The hot extrusion forming equipment for I-shaped aluminum alloy profile production comprises an extrusion cylinder, a separation type extrusion rod is arranged on the rear side of the extrusion cylinder, the separation type extrusion rod is installed on a hydraulic driving part, a heat preservation end is rotationally connected to the front side of the extrusion cylinder, and a discharging cylinder is rotationally connected to the front side of the heat preservation end. A flow storage box is installed at the position, close to the rear side, of the outer side wall of the discharging barrel, an extrusion mold is installed in the outer side wall of the discharging barrel, and a trimming and pressurizing assembly is installed on the outer side wall of the extrusion mold. The problem of poor combination of continuous forming of the two sections of aluminum blanks is solved, and extrusion force in the radial direction and the axial direction is applied to the combination position of the two sections of aluminum blanks through the separated extrusion rod and the hammering assembly, so that the strength of the combination position of the two sections of aluminum blanks is obviously improved.

Shear-assisted extrusion assemblies are provided. The assemblies can include a billet containing assembly containing a billet comprising a billet outer material and a billet inner material in at least one cross-section; a tool operably engaged with the billet; an extrudate receiving channel configured to receive extrudate from the tool, wherein the extrudate comprises extruded outer material and extruded inner material in at least one cross-section, the extruded outer material being the same material as the billet outer material, and the extruded inner material being the same as the billet inner material. Methods for producing multi-material shear-assisted extrudate are also provided.

The present invention discloses an extrusion die for wide-width special-shaped copper busbars. The extruded copper raw material is diverted and drained by two relatively arranged half-drainage plates, and the flow rate of the copper raw material metal flow in each part of the width section is controlled to ensure that the copper raw material metal flow is evenly filled along the width section direction of the special-shaped copper busbar. The diverter and drainage plates and the special-shaped die are designed as two half-piece structures, which is convenient for die assembly and easy to disassemble. The copper strip and the die are not easy to stick together, which reduces the difficulty of demolding, shortens the demolding time, and reduces the damage to the die caused by improper disassembly methods. The sizing hole of the sizing plate is designed according to the structure of the special-shaped copper busbar and is used to regulate the size of the extruded copper busbar to ensure accuracy. In actual production practice, the present invention effectively solves the problems of extrusion cracking, molding difficulty, poor dimensional accuracy, uneven thickness, etc. that occur when wide-width special-shaped copper busbars are extruded by existing extruders, effectively improves the comprehensive yield of the product, extends the service life of the mold, and improves work efficiency.

The utility model discloses a cooling device for an extrusion wheel of a coating machine, which relates to the technical field of cooling devices and comprises a mounting plate and a collecting component. The front side of the mounting plate is rotationally connected with two corresponding extrusion wheels, the rear side of the mounting plate is provided with a water storage assembly and two corresponding liquid pumping assemblies, and the two liquid pumping assemblies are both connected with the water storage assembly; the collecting assembly comprises a fixed frame, moving frames, a collecting shell, a two-way screw and a motor, the fixed frame is fixed to the front side of the mounting plate, the two corresponding moving frames are slidably connected to the interior of the fixed frame, threaded holes are formed in the lower sides of the moving frames, threads of the two threaded holes are opposite, normal-temperature water can be cooled, and the collecting shell can be used for collecting water. And then the extrusion wheel is cooled by using the cooled water, and meanwhile, the cooled water can be recycled, so that waste of water resources is avoided.

In extrusion processing in which diameter reduction is performed by pressing a raw pipe having a core bar inserted therein into a die having a small inner diameter portion on its tip end side, a differential thickness pipe having a thick-walled portion at its tip end can be molded using a core bar having a small cross-section portion formed at its tip end. It is also possible to mold a differential thickness pipe having a thick-walled part at an intermediate axial position by using a raw pipe having a thin-walled portion at its tip end. For example, such a raw pipe can be molded by extrusion processing using a core bar having no small cross section portion at its tip end, prior to the above-described formation of the thick-walled portion. When higher dimensional accuracy is required, a so-called “counter punch” may be used in the formation of the thick-walled portion.

To provide an extrusion die for molding of a patterned product which prevents a product member from getting caught at the pattern molding tool side when an uneven pattern is molded on a surface of the product member to achieve improvement of productivity.SOLUTION: An extrusion die for molding of a patterned product includes: an upper die 10 configured to introduce a thermoplastic member; a lower die 20 supporting the upper die 10; and a pattern molding tool 30 which rotates in conjunction with movement of a product member 50 to mold an uneven pattern on a surface of the product member 50. The upper die 10 has a bearing part 13 which molds the thermoplastic member into a shape of the product member 50. A rear surface side molding surface of the product member 50 in the bearing part 13 is provided with a projection molding part 14 for molding a projection 54 which hooks on the projection molding part 14 to prevent the product member 50 from getting caught in the pattern molding tool 30.SELECTED DRAWING: Figure 3

A system for performing shear-assisted extrusion can include a die tool, a headstock, a midstock, and a tailstock. The die tool can include a face configured to engage and plasticize a portion of feedstock material engaged with the face. The die tool can define an opening to receive plasticized feedstock material therethrough. The headstock can be secured to the die tool. The headstock and the die tool can be together rotatable about a central axis to generate a rotation-induced shear force between feedstock material and the die tool to extrude the feedstock material through the opening of the die tool. The midstock can be configured to support the feedstock material at least partially therein. The tailstock can be configured to translate along the central axis relative to the headstock and the headstock to generate an axial extrusion force between the feedstock material and the die tool.

The invention discloses a multifunctional die frame of a high-precision seamless conical tube forming die, comprising a plurality of triangular prism-shaped inner cores (1) connected end to end, a through hole (6) matching the seamless conical tube to be produced is arranged on the center line of the inner core (1), three side surfaces of the inner core (1) are correspondingly provided with covers (2), a roller die body accommodating space (3) is formed inside the side surfaces of the inner core (1) and the corresponding covers (2), and a cylindrical outer shell (4) is covered on the outside of the matching body of the plurality of inner cores (1) and all the covers (2). The invention has the advantages of being able to be used for the centralized fixing of three forming roller dies arranged in a surrounding manner and being able to adjust the length according to the requirements of the processed products.

The invention relates to a hollow extrusion forming device and method for an aero-engine shaft, and relates to the technical field of shaft extrusion, the extrusion forming device comprises a base and an extrusion mechanism, and the extrusion mechanism comprises an extrusion cylinder arranged on the base, provided with a forming hole and used for a blank; the variable-diameter core rod sequentially penetrates through the initial hole and the forming hole from the end, away from the forming hole, of the extrusion cylinder; the extrusion die is installed on the inner side wall of the extrusion cylinder in a sliding mode and used for extruding the blank and enabling the blank to be attached to the variable-diameter core rod to be formed; and the first driving assembly and the second driving assembly are used for driving the variable-diameter core rod and the extrusion die to move correspondingly. Compared with the prior art, the method has the advantages that the initial hole of the blank is firstly subjected to extrusion forming through the variable-diameter core rod, then the blank is extruded by the extrusion die to be attached to the variable-diameter core rod to form all the variable-diameter holes, meanwhile, the whole shape of the shaft part is formed, and therefore stress generated when the variable-diameter core rod is machined is greatly reduced; and the production efficiency of the shaft piece is improved, and the production cost is reduced.

To manufacture a differential thickness pipe having a solid part, a material having a hollow tip end side and a solid base end side is inserted in a part of a container hole to contact an end part on the material tip end side with an inner diameter decreasing part of the container hole, a sleeve is contacted with an end part on the material base end side, a mandrel is inserted into a hollow hole of the material, and a tip-to-tip distance between tip end parts of the sleeve and the mandrel is fixed. The material is pushed into a small inner diameter part of the container hole by advancing the sleeve and mandrel toward an extrusion direction while maintaining the tip-to-tip distance until the mandrel tip end part arrives at the inner diameter decreasing part. The sleeve and the mandrel are further advanced while maintaining the tip-to-tip distance.

The invention relates to the technical field of welded pipe welding, and particularly discloses a straight welded pipe welding forming unit which comprises a fixed bottom frame arranged on a production line, and a feeding area, a pretreatment area, an extrusion area and a welding area arranged above the fixed bottom frame, and the welding area is provided with a welding frame fixed to the tail end of the fixed bottom frame. A limiting wheel used for limiting a welded pipe and a laser welding gun arranged in the middle of the welding frame and used for welding are arranged on the inner side of the welding frame. A mounting base is fixed to the top face of the fixing bottom frame, limiting side plates are symmetrically and integrally arranged on the front side and the rear side of the top face of the mounting base, and the pretreatment area and the extrusion area are arranged on the left side and the right side of the mounting base correspondingly. According to the welding forming unit for the longitudinal welded pipe, a steel belt can be stably fed and pretreated, the height positions of different extrusion wheels can be adjusted, so that the center deviation of welded pipe forming is reduced, a welding seam and a welding gun can be stably aligned, and the welding forming efficiency is improved.

The invention provides machining equipment and a machining method for an automobile steering column, and belongs to the technical field of machining. The machining equipment for the automobile steering column solves the problem that the size error is large due to deformation of the middle section during cold extrusion of an existing steering column, and comprises a hydraulic machine provided with a tool and a mold, a mandrel and a tubular blank are coaxially arranged on the tool, a centering assembly coaxial with the tubular blank is further arranged on the tool, and the center of the mandrel is matched with the centering assembly. A centering lantern ring is arranged on the centering assembly, a coaxial positioning shell is arranged on the centering lantern ring, a plurality of connecting bridge plates are arranged between the positioning shell and the centering lantern ring, a passing cavity is formed between the connecting bridge plates, a plurality of arc-shaped positioning blocks are arranged on the outer wall of the centering lantern ring, a rotating shaft is arranged on the arc-shaped positioning blocks, and the rotating shaft is fixed to the centering lantern ring. The arc-shaped positioning blocks protrude out of the inner wall of the centering lantern ring, a plurality of guide blocks are arranged at the bottom of the die, the guide blocks penetrate through the passing cavity, the guide blocks abut against the arc-shaped positioning blocks, and the die has the advantages of being high in machining precision and easy and convenient to use.

In the present invention, when manufacturing a different-thickness pipe having a solid portion, there are performed: a first step for inserting a cylindrical material that is hollow on the proximal-end side and solid on the distal-end side into a large-inside-diameter portion of a container hole, bringing the distal-end side of the material into contact with a decreasing-inside-diameter portion of the container hole, bringing a sleeve into contact with the proximal-end-side end of the material, inserting a mandrel into the hollow hole in the material, and fixing the inter-distal-end distance, which is the distance between the distal end of the sleeve and the distal end of the mandrel, at a prescribed distance; a second step for causing the mandrel and the sleeve to advance in the extrusion direction, while maintaining the inter-distal-end distance, during a period until the distal end of the mandrel reaches the decreasing-inside-diameter portion of the container hole, whereby the material is pressed into the small-inside-diameter portion via the decreasing-inside-diameter portion of the container hole; and a third step for continuing to advance the sleeve and the mandrel while maintaining the inter-distal-end distance. It is thereby possible to reduce the incidence of defects such as cracks and / or material accumulation without requiring a material having a complex shape.

The utility model discloses a cold extrusion strengthening device which comprises a nose top cap with one end being a hollow area and the other end being provided with a first through hole; one end of the core rod penetrates through the first through hole, and the other end is arranged in the nose top cap; one end of the core rod base enables the core rod to be inserted and forms threaded connection, the other end of the core rod base is of a hollow sleeve structure, a pull gun piston rod is arranged in the hollow sleeve structure, and the pull gun piston rod is in threaded connection with the core rod base; the guide sleeve is arranged in the nose top cap, the core rod penetrates through the guide sleeve, and the end, away from the nose top cap, of the guide sleeve is in threaded connection with the core rod base; the pull gun shell is in threaded connection with the inner side of the open end of the hollow area of the nose top cap, one end of the multi-seam lining is arranged in the guide sleeve, the other end of the multi-seam lining extends to the outer side of the first through hole, the core rod is inserted into the multi-seam lining, one end of the spring is connected with the multi-seam lining, the other end of the spring is connected with the core rod base, and the core rod penetrates through the spring. The utility model provides a cold extrusion operation device for single-side operation.

Implementations are described herein that relate to manufacturing articles comprised of one or more metallic materials. In one or more examples, the one or more metallic materials can have a preformed shape that is inserted into the die. In one or more additional examples, the one or more metallic materials can include one or more powders or flakes disposed in the die. The material is then contacted within the die by a tool that moves in a rotational direction and in a vertical direction. The manufactured articles can have a shape that corresponds to the shape of the die.

The inner side of a pipe material is provided with a small inner diameter region having an inner diameter smaller than the outer diameter of the pipe material and a large inner diameter region having an inner diameter larger than the outer diameter of the pipe material on the front end side and the base end side. A mandrel (metal core) having a small outer diameter region having an outer diameter corresponding to the inner diameter of the pipe material and a large outer diameter region having an outer diameter larger than the inner diameter of the pipe material is press-fitted on the tip side and the base end side, respectively, and the base end side end of the pipe material is expanded in diameter, and then the base end side end of the pipe material is pressed by a sleeve. The pipe into which the mandrel is inserted is pressed into the small-inner-diameter region of the extrusion container, and the diameter of the pipe is reduced. As a result, it is possible to provide an extrusion molding method and an extrusion molding device for an unequal-thickness pipe in which the diameter difference between a large-diameter section (ear section) and a small-diameter section (unequal-thickness section formed by reducing the diameter) can be set to be large without an excessive increase in the machining load, and in which the length in the axial direction can be set arbitrarily.

A die assembly includes an inflow end, an outflow end opposite the inflow end, and an internal cavity extending from the inflow end to the outflow end. The die assembly also includes an internal mandrel disposed within the internal cavity. The internal mandrel has an end proximate to the outflow end of the die assembly. The die assembly also includes an internal cooling channel within the internal mandrel. The internal cooling channel has an outlet at or near the end of the internal mandrel.

The present application belongs to the field of aluminum profile processing, and particularly relates to a porous aluminum alloy flat tube extrusion forming die and processing technology, which comprises a die sleeve, a positive die, a push rod, a plug, a core barrel and a die core. The die sleeve is in the shape of a hollow sleeve. The positive die is in the shape of a hollow sleeve, is arranged at one end of the sleeve of the die sleeve, and the shape of the outer wall of the positive die corresponds to that of the inner wall of the die sleeve. The push rod moves the positive die in the sleeve of the die sleeve. The plug is in the shape of a sleeve, is arranged at the other end of the sleeve of the die sleeve, and the shape of the outer wall of the plug corresponds to that of the inner wall of the die sleeve. The core barrel abuts against the plug. The die core is arranged in the core barrel, one end of the die core penetrates the sleeve of the plug, extends into the sleeve of the die sleeve, and can be extended and retracted back and forth, a nitrogen gas passage is arranged in the die core, the outlet of the nitrogen gas passage is arranged at the end of one end of the die core, and the shape of the outer wall of one end of the die core corresponds to that of the inner wall of the positive die to form a model cavity. The present application uses a special die and processing technology to ensure that the porous aluminum alloy flat tube will not collapse and deform in the process of forming extrusion.

A system for performing shear-assisted extrusion or friction extrusion can include a die tool, a rotating assembly, a container, and a ram. The die tool can include a face configured to engage and plasticize a portion of feedstock material engaged with the face. The rotating assembly can include a housing and a spindle connected to the housing and connected to the die tool. The spindle rotatable together with the die tool relative to the housing about a central axis to generate a rotation- induced shear force between feedstock material and the die tool to extrude the feedstock material through the die tool. The container can support the feedstock material at least partially therein. The container can translate along the central axis between a disengaged configuration and an engaged configuration wherein the container is engaged with the housing to resist rotation of the container relative to the housing.

Embodiments described herein relate to apparatus for extruding a material. The apparatus includes an extrusion die arranged to receive material to be extruded from a first direction and from a second direction. The extrusion die includes an orifice from which material is extruded in a third direction. The first, second and third directions are not all in the same plane. None of the first, second and third directions is parallel to any other of those directions.

In the present invention, a raw pipe is set on a container (dice) that includes, on a tip end side and a base end side, respectively, a small inner diameter region having an inner diameter smaller than an outer diameter of the raw pipe and a large inner diameter region having an inner diameter larger than the outer diameter of the raw pipe. A mandrel (core metal) includes, on a tip end side and a base end side, respectively, a small outer diameter region having an outer diameter corresponding to an inner diameter of the raw pipe and a large outer diameter region having an outer diameter larger than the inner diameter of the raw pipe. After the mandrel is pressed into the raw pipe and the end of the base end side of the raw pipe is expanded, the end of the base end side of the raw pipe is pressed using a sleeve, and the raw pipe into which the mandrel is inserted is pressed into the small inner diameter region of the container and contracted. Due to this configuration, a method for extrusion-molding a different-thickness pipe and a device for extrusion-molding same are provided, which make it possible to set the diameter difference between the large diameter part (ear part) and the small diameter part (contracted different-thickness part) to a large value without excessively increasing the machining load, and which also make it possible to set the length in the axial direction as desired.