717results about "Extrusion dies" patented technology

The invention discloses multifunctional lead brick extrusion equipment with a replaceable mold, relates to the technical field of lead processing, and aims to solve the problems of production stagnation and economic loss caused by idle equipment due to long consumed time of the whole process when the mold is replaced in the prior art, the multifunctional lead brick extrusion equipment comprises a base, and the top of the base is fixedly connected with a plurality of guide frames; the outer wall of the guide frame is slidably connected with a pair of symmetrically arranged extrusion plates, the bottom of the extrusion plate on the lower side is fixedly connected with the top of the base, the top of the guide frame is fixedly connected with a top cover, and the bottom of the top cover is fixedly connected with a hydraulic rod; and the other end of the hydraulic rod is fixedly connected with the top of the extrusion plate on the upper side, a pair of piston cylinders are arranged on the top of the base, and corresponding molds are arranged on the opposite faces between the extrusion plates. The method has the advantage that the idle time of equipment caused by die replacement is greatly shortened.

The invention discloses an asymmetric extrusion preparation method for a heterogeneous magnesium alloy composite board with an adjustable layer thickness ratio. The method comprises the steps that an asymmetric extrusion die with an extrusion outlet deviating from the center is designed, and an extrusion deformation section is of a triangular section in the thickness direction and of an isosceles trapezoid section in the width direction; a VK41 magnesium alloy, a ZK61 alloy and pure magnesium are machined into blanks with the thicknesses of A, B and C, the blanks are combined according to the EZP sequence after homogenization treatment, the blanks are heated to 350-400 DEG C, heat preservation is conducted, and the extrusion speed is 1-2 mm / s; extruding by adopting an asymmetric die, and placing pure magnesium on the alpha angle side to obtain a three-layer composite board; and carrying out folding or V-shaped bending test on the processed sample. By regulating and controlling the ratio of A: B: C and the extrusion shrinkage angle, accurately controlling the layer thickness ratio, introducing shear strain to improve the texture, coordinating the tension and compression asymmetry and remarkably improving the bending performance, the process is simple, and the method is suitable for industrial production and is suitable for the fields of aerospace, automobiles and the like.

The invention relates to the technical field of part forming machining, and discloses head and flange one-time extrusion forming equipment which comprises an extrusion module. The extrusion module comprises an upper die, a lower die, an upset head die, a driving assembly and a positioning assembly, the upper die and the lower die further comprise positioning inserts, head inserts and forming inserts, and the positioning inserts, the head inserts and the forming inserts are detachably installed on the upper die plate and the lower die plate. The complex process that the flange needs to be upset independently and then the head needs to be upset during machining and manufacturing of a traditional stamping die and a forging machine is avoided, the production process is simplified, and the production efficiency is improved. Products of various specifications and sizes are manufactured by quickly replacing inserts and upset head dies of different specifications, quick remodeling is achieved, automatic feeding is achieved by arranging the feeding module, the feeding module is used for automatically feeding blanks to the extrusion module, and the machining and production efficiency is further improved.

According to the cold extrusion forming process and die for the thin-wall pure aluminum camera shell, a 1060 pure aluminum plate serves as a blank, surface pretreatment, first extrusion, annealing, surface retreatment and second extrusion are conducted in sequence, and finally a small amount of machining is conducted to obtain a finished product. According to different extrusion procedures, dies matched with the method are divided into a floating radial extrusion die and a floating combined extrusion die, and each of the floating radial extrusion die and the floating combined extrusion die comprises an upper die assembly, a middle floating die assembly and a lower die assembly; the floating radial extrusion die forms a radial extrusion cavity in the die assembly process, first-order extrusion is completed, and a radial extrusion forging stock is obtained; and the floating combined extrusion die forms a combined extrusion cavity in the die assembly process, two-order extrusion is completed, and a combined extrusion forging stock is obtained. Radial extrusion and combined extrusion share the same press frame, the die cost is remarkably reduced, and the die is suitable for large-scale production of thin-wall pure aluminum camera shells in multiple scenes such as vehicle-mounted scenes and security and protection scenes.

The invention provides a tee joint cold-pushing one-time forming device and a tee joint cold-pushing one-time forming process, and belongs to the technical field of three-pushing pipes. A three-way rack; the three-way cold pushing table is arranged at the upper end of the three-way rack; the three-way pipe placing groove is formed in the upper end of the three-way cold pushing table; the three-way forming groove is formed in the lower inner wall of the three-way pipe placing groove; the number of the hydraulic fixing devices is two, and each hydraulic fixing device comprises a clamping pressurizing block, a three-way pipe hydraulic clamping block, a three-way pipe fixing ring, a first oil groove, a front pushing block, a hydraulic oil connecting groove, a second oil groove, an oil groove partition plate, an oil groove communicating hole, a clamping inserting rod, an oil groove plugging block, a sliding-in sleeve and a sealing ring; the linearity and synchronism of the clamping action are effectively guaranteed, and deviation or clamping stagnation in the clamping process is prevented.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

The invention discloses a multi-cavity aluminum alloy battery pack shell extrusion-bending process optimization method, and relates to the technical field of aluminum alloy machining. According to the method, 6000 series aluminum alloy serves as a base material, and the problems of cracking, resilience, section deformation and uneven performance of a profile in the traditional process are solved through the six-step core process of compound trace element regulation and control, gradient heating ingot casting, PID temperature control extrusion, segmented quenching temperature control, multi-roller cooperative bending and online structure monitoring. The strength and plasticity of the alloy are improved through Mn / Zr or Cu / Ag composite microalloying, extrusion-bending continuous forming and real-time grain boundary migration and dislocation density monitoring are combined, and the multi-cavity structure size precision (the broad side error is + / -1.87 mm, and the narrow side error is + / -0.40 mm) and the mechanical property (the tensile strength is larger than or equal to 200 MPa, and the percentage elongation after fracture is larger than or equal to 8%) both reach the standard. The process shortens the processing period by more than 30%, improves the material utilization rate to 92%, is suitable for large-scale mass production of new energy automobile battery pack shells, and provides key technical support for automobile lightweight.

The application relates to a torsion extrusion device and method for enhancing torsion shear effect, which comprises an extrusion cylinder for arranging a blank to be extruded; a movable extrusion punch mounted in the extrusion cylinder and used for extruding the blank; and a multi-stage cavity rotary die connected with the extrusion cylinder and comprising a circular cross-section conical cavity, a first transition cavity, a wavy cross-section straight cavity, a second transition cavity and a circular cross-section straight cavity which are connected in sequence and integrally formed. Compared with the prior art, the application can solve the problem of slip in the torsion extrusion process and make the torsion deformation zone and the extrusion deformation zone of the material coincide, so as to enhance the torsion shear effect and realize good grain refinement effect.

The invention discloses an online temperature control device for an aluminum alloy profile extrusion die, and relates to the technical field of aluminum alloy profile extrusion devices, and the online temperature control device comprises a base, a movable workbench, a die conveying assembly, a heating element and a temperature control assembly. According to the online temperature control device for the aluminum alloy profile extrusion die, the full-automatic process of heating and heat preservation of the movable die is achieved, the overall time of temperature control and die replacement of the movable die is shortened, the safety and continuity of the production process are improved, and the production efficiency is improved through wrapping of the heat preservation cover and cooperative work of the heating element and the auxiliary heating element. Due to real-time feedback regulation and control of the temperature detection element and the PLC control system, the temperature of the movable mold can be stably maintained within the range required by the process, and the problems of profile surface defects, dimensional precision deviation and the like caused by temperature fluctuation of the movable mold are effectively avoided; and the product quality consistency of the aluminum alloy section is obviously improved.

The application discloses a kind of aluminium material extrusion forming equipment, it is related to aluminium material extrusion forming technical field, including pedestal, the top of the pedestal is fixedly arranged with die mechanism, mount, one side of the mount is provided with hydraulic cylinder one, and one end of hydraulic cylinder one is fixedly connected with stamping roller and penetrates mount, the outside of the die mechanism is provided with waste cutting structure, the waste cutting structure includes horizontal plate, cutting knife, fixed frame, fixed plate one, two baffle, the horizontal plate, fixed frame are fixedly connected with die mechanism, the fixed plate one, baffle are fixedly connected with pedestal, the top of the horizontal plate is provided with two hydraulic cylinder two.The aluminium material extrusion forming equipment can cut off cylindrical aluminium material waste site, the force generated by the cut-off aluminium material falling is buffered, damage to the equipment is avoided, and the discarded aluminium material can be cleaned.

The invention discloses a process for preparing a high-strength aluminum alloy profile through gradient cooling die-electromagnetic vibration combined extrusion, and belongs to the technical field of aluminum alloy machining. According to the technology, the uniform fine grain structure and high performance of the aluminum alloy profile are achieved through the design of the length of a die working tape and the flow gradient of a cooling channel in cooperation with an electromagnetic vibration device. After a blank is subjected to homogenization treatment, the blank is extruded through a gradient cooling die, a thin-wall area working zone is 20-25 mm, the cooling water flow is 15-20 L / min, a thick-wall area working zone is 10-15 mm, the cooling water flow is 5-10 L / min, 20-50 Hz electromagnetic vibration is applied at the same time, water mist quenching and aging treatment are conducted immediately after extrusion, zinc ions serve as heterogeneous nucleation cores to promote generation of new crystal grains, ferrocene sulfenyl is adsorbed to the surfaces of the crystal grains to inhibit growth, and the thickness of the crystal grains is 10-15 mm. The average grain size is refined, and the effect is improved.

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.

The application relates to the technical field of aluminum material processing, in particular to an aluminum material extrusion forming device and a forming process. The aluminum material extrusion forming device comprises a base, an extrusion assembly, a discharging box, a heating assembly, a die changing assembly, a die and a feeding assembly. The extrusion assembly and the discharging box are located on the base, the heating assembly and the feeding assembly are located on the side of the base, a passage is formed in the side wall of the discharging box in the width direction, the die changing assembly is located in the passage, the die is located on the die changing assembly, a feeding port and a discharging port are formed in the side wall of the discharging box in the length direction, a ingot containing cylinder which is movably connected with the feeding port is arranged in the feeding port, and a temperature control assembly is arranged in the discharging box. The die placed on the die changing assembly is quickly connected with the ingot containing cylinder in the discharging box through the arrangement of the die changing assembly, a plurality of dies can be arranged at the same time, the installation and replacement time of the dies is reduced, the temperature of the die in the discharging box is controlled by the temperature control assembly, and the production efficiency and product quality are improved.

The present invention provides a combination mold and method for one-step forming of a gradient structure metal disk. The combination mold includes a base, a lower mold, an upper mold, an extrusion component, a limiting ring, and a punch. The lower mold includes a lower mold platform, and the lower mold platform is provided with an extrusion component receiving groove and a blanking groove; the upper mold is located at the top of the lower mold, and the upper mold includes an upper mold base and a size control boss located at the bottom of the upper mold base, and the upper mold base is provided with a workpiece channel; the limiting ring is located between the upper mold and the lower mold; the extrusion component is detachably located in the extrusion component receiving groove; the punch is used to push the metal workpiece in the workpiece channel and cooperate with the shear inner wall to shear the metal workpiece, so that the gradient structure metal disk to be obtained remains on the lower mold platform. The gradient structure metal disk prepared by the present invention has a clear gradient structure and has the advantages of excellent comprehensive performance taking into account strength, hardness, plasticity, and conductivity.

The utility model relates to a power equipment workpiece universal adjusting machine which comprises a support and a working table, the working table is installed on the support, a workpiece adjusting machine is installed on the working table and comprises an axial adjusting unit and a vertical shaft adjusting unit, a leveling mechanism is installed on the axial adjusting unit, and the vertical shaft adjusting unit is installed on the vertical shaft adjusting unit. The leveling mechanism is used for leveling an end connector of the workpiece with the horizontal plane as the base plane and comprises a leveling installation support, a driver and a pull rod, the pull rod is connected to the output end of the driver, a flattening block is formed at the end of the upper section of the pull rod, and the leveling installation support is installed on the end face of the axial adjusting unit. A workpiece joint placing base surface is arranged on the leveling installation support, the pull rod moves upwards or downwards in a reciprocating mode through the driver, the flattening block is made to be close to or away from the workpiece joint placing base surface, and an end joint of a workpiece is leveled and flush with the horizontal direction. And high-quality leveling of the end connector of the workpiece is achieved, and the device is indispensable efficient and accurate machining equipment in the modern manufacturing industry.

The invention discloses an extrusion method of a regenerated aluminum profile with a complex section, and relates to the technical field of aluminum profile processing, and the extrusion method comprises the following operation steps: S1, raw material pretreatment: crushing waste aluminum subjected to impurity removal to form aluminum particles, and cleaning the aluminum particles by using a sodium hydroxide solution with the mass concentration of 5-8% at the temperature of 50-60 DEG C for 15-20 minutes; according to the extrusion method for the regenerated aluminum profile with the complex section, various impurities in waste aluminum are effectively removed through a manual and mechanical combined sorting mode in cooperation with multiple impurity removal technologies such as magnetic separation, eddy current separation and wind power separation, and then standardized treatment such as crushing, alkali washing and drying is conducted, so that efficient recycling of regenerated aluminum resources is achieved, resource waste is reduced, and the production cost is reduced. And a clean and uniform raw material basis is provided for subsequent procedures, profile defects caused by impurity residues are avoided from the source, and the raw material utilization rate and the product percent of pass are increased.

The invention relates to the technical field of aluminum alloy profiles, and discloses a preparation method of an aluminum alloy profile for a battery pack structure, which comprises the following steps: step S1, on the basis of alloy components and high-temperature fluidity characteristics of aluminum alloy, the distribution of shunting holes of an extrusion die is designed through finite element simulation optimization, so that the distribution of the shunting holes is matched with the section shape of the profile; s2, the optimized mold is used for isothermal extrusion forming of molten aluminum alloy, extrusion is conducted under the constant-temperature condition, and a primary profile blank is formed; s3, through differentiated welding chamber depth design, the flow velocity and the filling uniformity of metal in all the areas are controlled; and S4, the formed profile is subjected to heat treatment. According to the method, the flow uniformity of metal in the extrusion process is remarkably improved through the optimal design of the die flow dividing holes based on finite element simulation and a fluid dynamic model in combination with curve fitting of the depth of the differential welding chamber and the profile section contour.

The application provides a hot extrusion die for aluminum profile production of solar cell panels, and belongs to the related technical field of profile hot extrusion forming. The hot extrusion die for aluminum profile production of solar cell panels comprises an upper die and a lower die. The upper die is provided with a positioning component. The lower die is provided with a positioning hole matched with the positioning component. The positioning component is provided with a fixing assembly for fixing the positioning component in the positioning hole. First, the upper die and the lower die are positioned through cooperation between the positioning component and the positioning hole, so that deviation between the upper die and the lower die can be prevented. Then, the upper die and the lower die are fixed through bolts. Finally, the positioning component is fixed in the positioning hole through the fixing assembly. When the die works, the fixing assembly and the positioning component can share the force of the bolts, so that the bolts are less likely to break, the number of bolts can be appropriately reduced, and the mounting time of the upper die and the lower die is reduced.

The utility model discloses an extrusion die working tape module convenient to replace, which belongs to the technical field of extrusion dies and comprises an upper module, and a plurality of feed ports are uniformly formed in the upper end of the upper module in a circumferential array at equal intervals; the mold core is fixedly mounted in the middle of the lower end of the upper module; a positioning column mounting plate is fixedly mounted at the lower end of the upper module; the assembled working tape module is mounted at the upper end of the lower die fixing block; the assembly type working belt module is composed of a plurality of modules. Each module is connected with the lower die fixing block in a sliding manner; each module is provided with a fixing mechanism which enables the adjacent modules to be plugged in a matched mode. A lower die fixing block is installed on the outer side of the upper end of the replacement mechanism. By means of the mode, the abraded module can be rapidly replaced, and the whole working belt module does not need to be completely disassembled; and by arranging a cooling circulating pipeline in the module, the situation that the molding quality is affected due to deformation caused by too high temperature of the module in the molding process of the profile is avoided.

The utility model provides an automatic mould centering and limiting device for a mould opening machine, and relates to the technical field of mould opening machines, the automatic mould centering and limiting device comprises a supporting block and a mounting rod, the top of the supporting block is provided with an embedded groove, the mounting rod is mounted in the embedded groove, the two sides of the front end of the mounting rod are both provided with limiting plates, and the two sets of limiting plates are obliquely arranged; a fastening bolt is arranged at the middle end of the interior of the embedded groove, a guide groove is formed in the front end of the mounting rod, the fastening bolt penetrates through the guide groove and is used for locking the mounting rod, and fixing pieces are arranged at the front ends of the two sides of the supporting block; the supporting block is installed in the middle of one end of the die connecting platform through the fixing piece, the two sets of limiting plates which are arranged in an inclined mode extend to the die connecting platform, the die is supported, the centering and limiting effects are achieved, the die is kept in the center and prevented from falling off from the edge, the die connecting device is suitable for centering and limiting dies of different sizes, and the production efficiency is improved. The application range is wide.

The utility model discloses an aluminum type porous extrusion die with a replaceable upper die, which relates to the technical field of aluminum material extrusion dies, and particularly comprises a lower die and the upper die, at least three die cores are arranged in the middle of one side of the upper die, a plurality of shunting ports are arranged at the edge of one end of each die core close to the upper die, and the shunting ports are distributed along the upper die; a welding chamber is arranged in the middle of one side of the lower die, and a cavity corresponding to the die core in position is formed in the welding chamber; the lower die and the upper die are stacked together, the welding chamber is right opposite to the flow dividing opening, the die cores are all arranged in the cavities, and aluminum material flowing gaps are formed between the die cores and the cavities. When the aluminum profile extrusion die is used, a plurality of set aluminum profiles can be extruded at a time, so that the extrusion efficiency is improved; and the lower die and the upper die are locked through the locking bolt, so that position deviation between the upper die and the lower die under the action of extrusion force is avoided, the extrusion precision is ensured, the locking bolt is convenient to disassemble, and the upper die and the lower die are convenient to replace.

The invention relates to the field of profile manufacturing, in particular to a forming method of a 5A30 aluminum alloy F-shaped profile and an extrusion die for preparing the F-shaped profile. According to the forming method of the 5A30 aluminum alloy F-shaped sectional material, the specifically-designed flow guide mold is additionally arranged in front of the sectional material mold to increase pre-deformation of metal, the extrusion technology is optimized, and the forming problem of the 5A30 aluminum alloy F-shaped complex sectional material is solved. According to the invention, the flow guide holes are adopted to increase the geometric similarity of the blank and the profile, so that the flow of metal is conveniently controlled, particularly, the flow rate of metal can be adjusted for extruding the F-shaped profile with large section difference, and the formation of the F-shaped profile with large wall thickness difference, complex shape and high difficulty is improved by combining with a specific extrusion speed. Meanwhile, twisting and bending deformation of the F-shaped profile can be reduced, the stress condition of the die is improved, and the service life of the die is greatly prolonged.

The application discloses a method for prolonging the service life of an aluminum alloy extrusion die and improving the forming precision of a profile, and relates to the technical field of metal plastic working.The specific steps of the method are as follows: finite element simulation analysis, stiffener design and forming, material selection and treatment, surface strengthening and assembly treatment, and cooling circuit processing.The application comprehensively predicts the stress distribution of the aluminum alloy extrusion die in the working process through the finite element simulation analysis technology, and innovatively designs an asymmetric stiffener structure.The structure is customized according to the stress direction and gradient of the stress concentration area, and the asymmetric stiffener effectively breaks the stress transmission path of the traditional symmetric stiffener through the unique radial offset and staggered angle design, thereby realizing the redistribution and accurate dispersion of the stress field.The design not only reduces the stress peak value of the key area of the die, but also improves the fatigue resistance of the whole die, thereby effectively prolonging the service life of the die.

The present invention belongs to the technical field of extrusion hydraulic presses, and specifically discloses a large-scale long-cylinder multi-station horizontal extrusion hydraulic press, comprising a base, a column, a front beam, a rear beam, a slider, a return cylinder, a main cylinder, a punch assembly, and a die assembly; the column is fixed between the front beam and the rear beam; the main cylinder and the return cylinder are used to drive the slider to reciprocate; the punch assembly comprises a punch structure, a slide, a slide, and a punch switching cylinder, the slide is fixed on the slider, and the punch switching cylinder is fixed on the slide; the punch structure is arranged on the slide; the slide is vertically slidably connected to the slide; the punch structure comprises a roughing punch and a stretching punch; the punch switching cylinder is used to drive the slide to move vertically; the die assembly comprises a stretching die and a clamping die structure, and the clamping die structure is used to install the stretching die. By providing a roughing punch and a stretching punch, and using a punch switching cylinder to drive the roughing punch and the stretching punch to move vertically, the corresponding punches are moved to the working position, thereby realizing a rapid conversion of the roughing or extrusion process.

A mold for producing a wear-resistant damping type treadmill track comprises an upper mold and a lower mold which are connected together in a buckled mode. The center of the bottom end face of the upper die is provided with a male head. Four vertically-through flow dividing holes are formed in the periphery of the male head. A welding chamber is concavely formed in the top end face of the lower die, a vertically-through forming hole is formed in the welding chamber, and the flow dividing holes of the upper die are communicated with the welding chamber; the forming hole comprises a middle hole and four side holes, and the middle hole is located in the middle of the forming hole and used for sleeving the male head; the four side holes are respectively positioned at the periphery of the middle hole; four flow choking blocks are arranged on the periphery of the forming hole in the welding chamber in a protruding mode, and the four flow choking blocks are located between the side holes and the side wall of the welding chamber respectively. And the four flow dividing holes are formed to communicate with the welding chamber, so that the welding effect can be improved, and metal materials can be fully fused. And the flow choking blocks are arranged on the outer sides of the side holes, so that the flow speed of metal materials at the side holes can be reduced, the uniform flow speed of all parts in the forming holes is ensured, and the product quality meets the requirements.

The application belongs to the field of magnesium alloy processing and relates to a device and method for preparing fine-grained magnesium alloy pipe by reciprocating radial extrusion. The technical scheme comprises a first power mechanism, a second power mechanism, an extrusion outer die and an extrusion inner die. The first power mechanism comprises a first extrusion ring, the second power mechanism comprises a second extrusion ring, and the first extrusion ring and the second extrusion ring have a tendency to reciprocate in a first direction. The extrusion outer die comprises a through hole and is arranged between the first extrusion ring and the second extrusion ring, the extrusion outer die is connected with the first power mechanism, and the first power mechanism drives the extrusion outer die to rotate around the center line thereof when the first extrusion ring operates. The extrusion inner die is arranged in the through hole and is connected with the second power mechanism, and the second power mechanism drives the extrusion inner die to rotate around the center line thereof when the second extrusion ring operates. The application can extrude and twist the inner wall of the magnesium alloy pipe, so that the magnesium alloy pipe generates extrusion deformation, twisting and shearing deformation, and the magnesium alloy pipe grain is further refined.

The invention discloses a one-step extrusion-cutting preparation method and device for fins between grooves in two sides. The device is composed of a main half die, an auxiliary half die, an upper extrusion block, a lower extrusion block, a stamping die and a taking-out mechanism, the upper extrusion block and the lower extrusion block are each provided with a groove-shaped forming cavity and an inter-groove fin forming area, and an input channel, a transverse channel and an output channel are formed after the main half die and the extrusion blocks are assembled. In the machining process, a stamping die pushes a workpiece to move downwards along an input channel under the action of an external load, and a workpiece material is sheared-shunted at a cutting edge of a lower extrusion block and enters a transverse channel under a constraint condition; and then the upper groove-shaped forming cavity, the lower groove-shaped forming cavity and the inter-groove area are sequentially filled with the material under the extrusion effect, and therefore inter-groove fin structures are formed on the upper side and the lower side of the workpiece at the same time. And after forming is completed, demolding of the extrusion block is achieved through the taking-out rod and the T-shaped taking-out rod. Cooperative forming of cutting, flow dividing, extruding and filling can be achieved in the single pressing process, symmetric or asymmetric fins between grooves in the two sides can be obtained, the structural integrity is high, the forming consistency is good, the method is suitable for rapid machining of various plastic metals, and fin structures of multiple specifications can be prepared by replacing the extruding blocks.

The application relates to the technical field of copper bar production, in particular to a connector copper bar production process, which comprises the following steps: S1, pushing a hot copper embryo into an extruder, so that the hot copper embryo passes through a primary forming assembly, thereby being formed into a primary copper piece; S2, cutting the primary copper piece into a predetermined length after cooling; S3, forming the primary copper piece into a target U-shaped copper bar through a forming device, so that the hot copper embryo is formed into the primary copper piece in step S1. The primary copper piece only has an initial state of the target U-shaped copper bar (such as a V-shaped copper bar, a large U-shaped copper bar with a size larger than that of the target U-shaped copper bar, that is, the primary copper piece is in a semi-formed state of the target U-shaped copper bar, and only secondary processing is needed to form the target U-shaped copper bar), thereby expanding the setting range of the primary forming assembly and avoiding the problem of insufficient mechanical strength of the primary forming assembly caused by the limitation of the target U-shaped copper bar.

The present invention provides a manufacturing method for a metal part manufactured by hot extrusion that can ensure the quality of the metal part. The material (1) includes a tip surface (11), an outer peripheral surface (12), and a chamfered surface (13). When the glass disk 4 and the raw material 1 are loaded into the container 2 at the start of extrusion, as viewed in vertical cross section, the outer diameter Db of the leading end surface 11 of the raw material 1 satisfies formula (1) in relation to the maximum radial dimension Dd of the die hole 31 and the inner diameter Dc of the container 2. When an imaginary line (L1) is defined connecting a connection point (P1) between the leading end surface 11 and the chamfered surface 13 and a connection point (P2) between the chamfered surface 13 and the outer peripheral surface 12, the inclination angle θb of the imaginary line (L1) with respect to a perpendicular line (VL) to the axis center (CL) of the container 2 satisfies formula (2). Furthermore, the inclination angle θb, the outer diameter Db, the maximum dimension Dd, and the inner diameter Dc satisfy formula (3). Dd≦Db≦Dd+0.8×(Dc-Dd) (1) 45°≦θb≦65° (2) [Equation 1] TIFF0007755226000007.tif37157