CN111085617A - Aluminum alloy crushing-prevention extrusion connecting equipment and connecting method - Google Patents
Aluminum alloy crushing-prevention extrusion connecting equipment and connecting method Download PDFInfo
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- CN111085617A CN111085617A CN201911357983.3A CN201911357983A CN111085617A CN 111085617 A CN111085617 A CN 111085617A CN 201911357983 A CN201911357983 A CN 201911357983A CN 111085617 A CN111085617 A CN 111085617A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
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Abstract
The invention provides an aluminum alloy anti-crushing connecting device which comprises a hydraulic machine (2), a controller (3), a hydraulic moving track (4), a rolling cutter (5) and a sensor (6); the controller (3) is responsible for signal processing of the connecting equipment and controlling equipment parts to complete designated functions; the hydraulic machine (2) is responsible for finishing the specified extrusion amount of the aluminum alloy material (1) input by the controller (3); the hydraulic moving track (4) is used for finishing the transverse movement of the processing rolling cutter (5) according to the stress received by the controller (3) at different moments and the stress change rate in the processing process; the rolling cutter (5) is responsible for processing the aluminum alloy material; the sensor (6) detects the stress and the stress change rate on the rolling cutter (5), and the equipment fully considers the possible crushing failure in the extrusion connection process, so that the material loss in the extrusion process is reduced, and the cost consumption is reduced.
Description
Technical Field
The invention relates to the field of aluminum alloy material connection, in particular to a connecting device used for an aluminum alloy material.
Background
With the increasing awareness of environmental protection, the increasing perfection of the requirements on the reliability of products and the increasing emphasis of the country on the problem of environmental pollution, the adoption of aluminum alloy materials in the fields of vehicles and related manufacturing industry to reduce the weight of the whole vehicle and enhance the performance of the whole vehicle becomes an important measure for reducing energy consumption, saving energy, reducing emission and improving safety and reliability. At present, although aluminum alloy materials are used in many manufacturing industries, due to the influence of the connection cost and the connection efficiency between the aluminum alloy materials, the aluminum alloy materials are difficult to be widely popularized and used in the whole vehicle, and are limited by the cost, so that the lightweight effect and the performance requirement cannot be maximized. However, with the stricter requirements of the nation on vehicles, the adaptation to the requirements of technical development and the improvement of the competitiveness of products, the aluminum alloy connection method with lower development cost becomes an important means for the popularization of aluminum alloy materials in the manufacturing industry.
Although the conventional connection process used by the aluminum alloy materials can meet the connection between the aluminum alloy materials, the connection cost and the universality of the connection process are always the problems that the connection of the aluminum alloy materials is difficult to avoid. At present, the connection and sealing of aluminum alloy materials are mostly completed by adopting processes such as CMT welding, electromagnetic pulse welding, friction stir welding and the like in the connection of the aluminum alloy materials, although the connection process between the aluminum alloy materials can be realized by the above processes, the following problems still exist: firstly, most of the existing aluminum alloy material connection processes can meet the welding requirements, but have the defects of low processing efficiency, high processing cost and the like. Secondly, in order to ensure that the requirements of the connection reliability and the sealing performance on operators are high and harmful substances are generated in the welding process in the existing aluminum alloy connection process, the efficiency is difficult to improve and the environment-friendly requirements are not met. And thirdly, certain welding processes used above have different limitations on the structural form and the welding type of parts, so that the application range is difficult to realize generalization and popularization.
Disclosure of Invention
The invention aims to design an aluminum alloy material extrusion connection anti-crushing device and a specific section for material connection, wherein the two materials are used for the section of a connection part which adopts a specific design, a certain deformation is applied to the section of the connection part of the materials through the extrusion device, the crushing failure of the materials can be effectively prevented in the whole extrusion process, the materials are converted into interference fit through deformation in the connection section by clearance fit, and the sealing performance between the materials is realized while the connection is finished.
The technical scheme of the invention is to provide an aluminum alloy anti-crushing connecting device which comprises a hydraulic machine, a controller, a hydraulic moving track, a rolling cutter and a sensor, wherein the controller is arranged on the hydraulic moving track;
the controller is responsible for signal processing of the connecting equipment and controlling equipment parts to complete designated functions;
the hydraulic machine is responsible for finishing the specified extrusion amount of the aluminum alloy material input by the controller;
the hydraulic moving track is used for finishing the transverse movement of the processing rolling cutter according to the stress and the stress change rate of the controller at different moments in the processing process;
the rolling cutter is responsible for processing the aluminum alloy material;
the sensor determines the acting force and the force change rate of the processed material by detecting the stress and the stress change rate on the rolling cutter, and feeds back related data to the controller;
the hydraulic movable guide rail comprises a hydraulic machine mounting part and a rail bottom plate, a small hydraulic machine with a self-locking function is mounted on the hydraulic machine mounting part, when a controller gives a moving instruction, the hydraulic machine can control the rolling cutter base to drive the rolling cutter to move on the rail bottom plate, and after the moving function is completed, the hydraulic machine can keep the rolling cutter not to move transversely in the machining process through the self-locking function.
Further, the aluminum alloy crushing-prevention extrusion connecting equipment can obtain a stress and stress strain rate database under specified displacement by performing a stress test experiment on an aluminum alloy material with a specified extrusion section, in the formal extrusion processing process, the stress and stress strain rate database is matched with the corresponding stress and stress change rate in the database according to the magnitude and the change rate of the force applied to the sensors at the two ends of the rolling cutter, and then the controller controls the cutter to move by identifying the stress and the stress change rate obtained in the database.
Furthermore, the controller obtains the displacement required to be moved by identifying the stress and the stress change rate obtained in the database, the controller assigns a displacement instruction to the hydraulic moving guide rail through movement, and after the hydraulic moving guide rail finishes assigning the displacement, the hydraulic moving guide rail controls the rolling tool to keep not to generate displacement in the transverse direction in the machining process through a self-locking function.
The controller is used for sending a moving instruction to the hydraulic moving guide rail, and the hydraulic machine mounting part is used for receiving the moving instruction given by the controller, driving the rolling cutter base and driving the rolling cutter to move when the rolling cutter needs to be subjected to offset machining.
Further, the rolling tool processing is divided into plane extrusion and curved surface extrusion, wherein the curved surface extrusion is divided into large curvature radius and small curvature radius extrusion.
The invention also provides a method for processing the aluminum alloy material by the aluminum alloy crushing-resistant connecting equipment, wherein the method comprises the following steps:
The invention has the beneficial effects that:
(1) no additional welding process is required, thus reducing the additional cost associated with welding between aluminum alloy materials;
(2) the connection efficiency is high, and the environment is not influenced in the connection process;
(3) in the process of realizing extrusion connection, the possible crushing failure is fully considered, and the material loss in the extrusion process is reduced, so that the cost consumption is reduced;
(4) the application range is wide, the aluminum alloy can be used in aluminum alloy materials, and the influence of specific functions of the aluminum alloy materials can be avoided.
(5) The anti-crushing aluminum alloy material connecting equipment is developed, so that the aluminum alloy materials can be effectively protected from being damaged and failed in the extrusion process while the connection between the aluminum alloy materials is realized.
(6) With stress and stress strain rate numerical value as the reference basis, through program control rolling cutter removal on hydraulic pressure removal guide rail, can effectively be directed against under the different stress and stress strain rate circumstances, the cutter can adopt the most reasonable extrusion mode rapidly, when high-efficient completion cross-section is connected, can effectively avoid aluminum alloy material inefficacy.
(7) The connection between the aluminum alloy materials is completed by extrusion deformation, and the welding process used in the industry at present is not needed, so that the welding cost is reduced and the production efficiency is improved;
(8) through the feedback effect of the inductor, the situation that the cross section is crushed and failed in the aluminum alloy extrusion connection process can be effectively avoided by controlling and adopting different processing curvature radiuses for fine adjustment of the extrusion amount, the utilization rate of materials is improved, and the waste of the materials is reduced;
(9) the extrusion equipment has strong processing adaptability, can be widely used in the field of aluminum alloy, does not have the limitation of the application field, and has flexible structure and wide practicability;
(10) the designed extrusion equipment can effectively control the extrusion amount of the cutter on the extrusion section under different stresses and stress change rates through programs, and fully realizes the intelligent processing of extrusion under different conditions.
Drawings
FIG. 1 is a schematic cross-sectional view of an extrusion apparatus and process;
FIG. 2 is a schematic view of different radii of curvature of the machining tool;
FIG. 3 is a schematic view of an undeflected extrusion process;
FIG. 4 is a schematic diagram of a large radius of curvature offset extrusion;
FIG. 5 is a schematic diagram of the extrusion to restore the undeflected state;
FIG. 6 is a schematic view of a small radius of curvature extrusion.
Wherein: the device comprises 1-aluminum alloy material, 2-hydraulic machine, 3-controller, 4-hydraulic movable guide rail, 4.1-hydraulic machine installation part, 4.2-track bottom plate, 5-rolling cutter, 5.1-rolling cutter base and 6-sensor.
Detailed Description
Detailed description of the preferred embodimentsthe following detailed description of the present invention will be made with reference to the accompanying drawings 1-6, although it should be understood that the scope of the present invention is not limited to the specific embodiments.
As shown in fig. 1, the embodiment provides an aluminum alloy crushing-prevention connecting device, which comprises a hydraulic machine 2, a controller 3, a hydraulic moving track 4, a rolling cutter 5 and a sensor 6;
the controller 3 is responsible for signal processing of the connecting equipment and controlling equipment parts to complete designated functions;
the hydraulic machine 2 is responsible for finishing the specified extrusion amount of the aluminum alloy material 1 input by the controller 3;
the hydraulic moving track 4 is used for finishing the transverse movement of the rolling cutter 5 according to the stress received by the controller 3 at different moments and the stress change rate in the machining process;
the rolling cutter 5 is responsible for processing the aluminum alloy material;
the sensor 6 detects the stress and the stress change rate on the rolling tool 5, determines the acting force applied to the processed material and the change rate of the force, and feeds back relevant data to the controller 3.
As shown in fig. 3, the hydraulic movable guide rail 4 comprises a hydraulic machine mounting part 4.1 and a rail base plate 4.2, the hydraulic machine mounting part 4.1 is provided with a small-sized hydraulic machine with a self-locking function, when the controller 3 gives a moving instruction, the hydraulic machine can control the rolling cutter base to drive the rolling cutter 5 to move on the rail base plate 4.2, and after the moving function is completed, the hydraulic machine can keep the rolling cutter 5 from transversely moving in the processing process through the self-locking function.
This extrusion jointing equipment is prevented collapsing by aluminum alloy can draw out under appointed displacement, stress and stress strain rate database through carrying out a large amount of stress test experiments to the aluminum alloy material of appointed extrusion cross-section, in formal extrusion process, according to the size and the rate of change of the power that receive on the sensor 6 at rolling cutter 5 both ends, match with the stress and the stress rate of change that correspond in the database, then controller 3 is through the stress and the stress rate of change that obtain in the discernment database to control the cutter and remove.
The controller 3 obtains the displacement required to move by identifying the stress and the stress change rate obtained in the database, the controller 3 gives an appointed displacement instruction to the hydraulic moving guide rail 4 to move, and after the hydraulic moving guide rail 4 finishes the appointed displacement, the hydraulic moving guide rail 4 controls the rolling tool 5 to keep not to generate the displacement in the transverse direction in the machining process through the self-locking function.
The controller 3 is responsible for sending out the movement instruction to the hydraulic pressure moving guide rail 4, when the rolling cutter 5 needs the bias processing, the hydraulic press installation part 4.1 will receive the movement command given by the controller 3, therefore, the hydraulic press will drive the rolling cutter base 5.1 and drive the rolling cutter 5 to move, when the moving distance reaches the specified value, the hydraulic press moving guide rail 4 will pass the auto-lock, so the rolling cutter 5 is controlled not to deviate in the processing process.
The connecting equipment hydraulic machine 2 controls the rolling cutter 5, which is responsible for finishing the extrusion amount appointed by the controller 3, and applies appointed downward displacement to the hydraulic moving track 4, the sensors 6 are installed on two sides of the processing cutter, the rolling cutter 5 and the sensors 6 are installed on the hydraulic moving guide rail 4, wherein the sensors 6 can feed back the stress and the stress change rate received in the material processing process at different moments in the processing process, the controller 3 can adjust the hydraulic moving guide rail 4 to move according to the information fed back by the sensors 6, thereby reducing the stress and the stress change rate applied on the material by the cutter in the processing process, the rolling cutter 5 is connected on the hydraulic moving track 4, and can move on the hydraulic moving guide rail 4, and the cutter has three different extrusion radius working modes, as shown in the following figure 2: the processing of the rolling cutter 5 is divided into plane extrusion and curved surface extrusion, wherein the curved surface extrusion is divided into large curvature radius extrusion and small curvature radius extrusion.
The embodiment also provides a method for processing the aluminum alloy material by the aluminum alloy crushing prevention connecting equipment, wherein the method comprises the following steps:
And 4, judging the stress sigma and the strain rate value by the control panel, feeding back and controlling whether the hydraulic moving track 4 needs to move the machining tool or not according to different range values of the stress sigma and the strain rate phi, and adjusting the deformation of the extrusion section in the extrusion process by changing the size of the curvature radius of the contact between the machining tool and the extrusion section.
The method effectively reduces the local deformation in the aluminum alloy connection process, can effectively ensure that the problem of crushing failure of the connection section in the extrusion process can not occur while the extrusion connection is completed, and realizes the connection and sealing effects between aluminum alloy materials. The extrusion connection process is safe, reliable, high in efficiency and wide in application, extra welding cost is avoided in the connection process, and cost can be effectively reduced and efficiency can be improved.
The aluminum alloy material 1) is placed on a fixed table, a controller 3 indicates a hydraulic machine 2 to move downwards by a specified movement amount and starts a cutter 5 to rotate, a sensor 6 feeds back the material bearing stress sigma and the stress change rate phi in the extrusion process at different moments, and a control system judges whether the stress value sigma is larger than a set stress value sigma or not through a program0So as to guide the moving guide 4 to control the transverse movement of the cutter 5 to reduce the local compression amount applied to the aluminum alloy material by the cutter 5 and reduce the extrusion stress, and if the stress value sigma is always in the specified standard stress value sigma during the process of reducing the compression amount0Within, then the controller 3 will not give the moving guide system 4 a command to move the cutter 5, the cutter 5 will always be centered to maximize the extrusion of the material cross section, the extrusion is performedIn the process, the cutter 5 keeps rotating anticlockwise to drive the machined material to move.
When the stress value sigma exceeds the standard value sigma at a certain moment in the extrusion processing process0Then, the controller 3 starts to judge whether the stress change rate phi exceeds the standard stress change rate phi at this time0When the rate of change is less than phi0When the extrusion stress exceeds the standard value σ, the following description shows that0However, the change rate phi of the local extrusion stress is small, and the probability of material crushing and failure is small compared with the prior art, so that the controller 3 can control the rolling cutter 5 to move to one side with larger curvature radius of the cutter by sending a command to the movable guide rail system 4, the extrusion force applied to the extrusion section of the material in the moving process can be continuously reduced, and meanwhile, the controller 5 can monitor the extrusion force, and when the extrusion force moves for a certain distance, the stress value is lower than the standard stress value sigma0After, controller 3 is receiving the information, for better assurance extrusion effect, can adjust the displacement through removal guide rail system 4 like, and the beginning control cutter 5 moves back and ensures that can extrude the volume in the course of working and guarantee to extrude the in-process and can not lead to in the material course of working inefficacy when maximize as far as, can more effectively extrude the operation when preventing the conquassation, as shown in fig. 3:
in the event of the stress value sigma exceeding the standard value sigma during extrusion of the tool 50Thereafter, and the controller 3 judges that the stress change rate at this time exceeds the standard value φ of the stress change rate0In this case, it is described that not only the stress value σ is large, but also the change value of the stress change rate Φ is large, therefore, in order to effectively prevent the material failure and the crushing phenomenon from occurring in the machining process, the controller 3 moves the guide rail to control the movement of the tool 5 through the moving guide rail system 4, and uses the tool 5 with a small curvature radius for machining the material, so as to rapidly reduce the stress σ and the stress change rate Φ in the machining process, when the stress value σ and the stress change rate Φ return to normal, the controller 3 controls the tool 5 to start moving through the hydraulic moving system, and the curvature radius machined by the tool 5 starts to increase continuously to ensure the extrusion amount more effectively.
While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details of the embodiments are not to be interpreted as limiting the scope of the invention, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the invention, can be interpreted without departing from the spirit and scope of the invention.
Claims (6)
1. An aluminum alloy anti-crushing connecting device comprises a hydraulic machine (2), a controller (3), a hydraulic moving track (4), a rolling cutter (5) and a sensor (6);
the controller (3) is responsible for signal processing of the connecting equipment and controlling equipment parts to complete designated functions;
the hydraulic machine (2) is responsible for finishing the specified extrusion amount of the aluminum alloy material (1) input by the controller (3);
the hydraulic moving track (4) is used for finishing the transverse movement of the processing rolling cutter (5) according to the stress received by the controller (3) at different moments and the stress change rate in the processing process;
the rolling cutter (5) is responsible for processing the aluminum alloy material;
the sensor (6) determines the acting force and the change rate of the force applied to the processed material by detecting the stress and the change rate of the stress on the rolling cutter (5), and feeds back related data to the controller (3);
the hydraulic movable guide rail (4) comprises a hydraulic machine mounting part (4.1) and a rail base plate (4.2), a small hydraulic machine with a self-locking function is mounted on the hydraulic machine mounting part (4.1), when the controller (3) gives a moving instruction, the hydraulic machine can control the rolling cutter base to drive the rolling cutter (5) to move on the rail base plate (4.2), and after the moving function is completed, the hydraulic machine can keep the rolling cutter (5) not to transversely move in the machining process through the self-locking function.
2. The aluminum alloy crush resistant connection apparatus of claim 1, wherein: the aluminum alloy crushing-prevention extrusion connecting equipment can obtain a stress and stress strain rate database under specified displacement through a stress test experiment on an aluminum alloy material with a specified extrusion section, in the formal extrusion processing process, the stress and stress strain rate database is matched with the corresponding stress and stress change rate in the database according to the magnitude and the change rate of the force applied to the sensors (6) at the two ends of the rolling cutter (5), and then the controller (3) controls the cutter to move by identifying the stress and the stress change rate obtained in the database.
3. The aluminum alloy crush resistant connection apparatus of claim 1, wherein: the controller (3) obtains the displacement required to move by identifying the stress and the stress change rate obtained in the database, the controller (3) gives an appointed displacement instruction to the hydraulic moving guide rail (4) to move, and after the hydraulic moving guide rail (4) finishes the appointed displacement, the hydraulic moving guide rail (4) controls the rolling tool (5) to keep not to generate the displacement in the transverse direction in the machining process through the self-locking function.
4. The aluminum alloy crush resistant connection apparatus of claim 1, wherein: the controller (3) is responsible for sending a moving instruction to the hydraulic moving guide rail (4), when the rolling cutter (5) needs to be subjected to offset machining, the hydraulic machine mounting part (4) (1) receives a moving command given by the controller (3), the hydraulic machine drives the rolling cutter base (5.1) and drives the rolling cutter (5) to move, when the moving distance reaches a specified value, the hydraulic machine moving guide rail (4) is self-locked, and therefore the rolling cutter (5) is controlled not to deviate in the machining process.
5. The aluminum alloy crush resistant connection apparatus of claim 1, wherein: the processing of the rolling cutter (5) comprises plane extrusion and curved surface extrusion, wherein the curved surface extrusion comprises large curvature radius extrusion and small curvature radius extrusion.
6. The method of processing an aluminum alloy material using the aluminum alloy crush resistant connecting apparatus as recited in claim 1, wherein:
step 1, realizing preliminary connection of aluminum alloy materials by adopting clearance fit, placing the aluminum alloy materials after the preliminary connection to a processing position, and controlling a rolling cutter (5) to move to the aluminum alloy materials (1) by a hydraulic machine (2) and applying downward specified compression to the aluminum alloy materials (1) so as to push the rolling cutter (5) to generate extrusion deformation on the aluminum alloy section of the aluminum alloy materials (1) to finish an extrusion connection effect;
step 2, the rolling cutter (5) moves to finish the aluminum alloy material subjected to extrusion processing through autorotation while finishing the material extrusion connection;
step 3, judging the stress value sigma and the stress change rate phi in the extrusion process by the controller (3), wherein in the extrusion process, the controller (3) receives the stress sigma and the stress change rate phi which are applied to the cutter (5) by the cross section when the rolling cutter (5) is extruded from the sensor (6) and combines the stress sigma and the stress change rate phi with a set standard value sigma0、φ0Carrying out comparison;
and 4, judging the stress sigma and the strain rate value by the control panel, feeding back and controlling whether the hydraulic moving track (4) needs to move the machining tool or not according to different range values of the stress sigma and the strain rate phi, and adjusting the deformation of the extrusion section in the extrusion process by changing the size of the curvature radius of the contact between the machining tool and the extrusion section.
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| CN201911357983.3A CN111085617B (en) | 2019-12-25 | 2019-12-25 | Aluminum alloy crushing-prevention extrusion connecting equipment and connecting method |
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| EP0366131A2 (en) * | 1988-10-27 | 1990-05-02 | Hughes Aircraft Company | Metallic component cold roll/crimping tool |
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| CN201310130Y (en) * | 2008-11-28 | 2009-09-16 | 王斌 | Glue injection fracturing bridge combination section |
| CN202741603U (en) * | 2012-07-25 | 2013-02-20 | 玉溪市兴红太阳能设备有限公司 | Panel core molding equipment of flat pressure-bearing solar energy heat collection panel |
| US9198483B2 (en) * | 2013-03-15 | 2015-12-01 | Thomas M. Adams | Self adhering connection surfaces, straps, snaps and bands |
| CN110000294A (en) * | 2019-03-12 | 2019-07-12 | 江苏博俊工业科技股份有限公司 | Ductile metal clinching method |
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2019
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0366131A2 (en) * | 1988-10-27 | 1990-05-02 | Hughes Aircraft Company | Metallic component cold roll/crimping tool |
| CN1329953A (en) * | 2001-08-08 | 2002-01-09 | 刘宗信 | Technology for manufacturing tubular body of load-bearing frame for chair |
| CN201310130Y (en) * | 2008-11-28 | 2009-09-16 | 王斌 | Glue injection fracturing bridge combination section |
| CN202741603U (en) * | 2012-07-25 | 2013-02-20 | 玉溪市兴红太阳能设备有限公司 | Panel core molding equipment of flat pressure-bearing solar energy heat collection panel |
| US9198483B2 (en) * | 2013-03-15 | 2015-12-01 | Thomas M. Adams | Self adhering connection surfaces, straps, snaps and bands |
| CN110000294A (en) * | 2019-03-12 | 2019-07-12 | 江苏博俊工业科技股份有限公司 | Ductile metal clinching method |
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