CN113275735A - Rotary friction extrusion auxiliary electromagnetic pulse material increase device and method - Google Patents
Rotary friction extrusion auxiliary electromagnetic pulse material increase device and method Download PDFInfo
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- CN113275735A CN113275735A CN202110690497.4A CN202110690497A CN113275735A CN 113275735 A CN113275735 A CN 113275735A CN 202110690497 A CN202110690497 A CN 202110690497A CN 113275735 A CN113275735 A CN 113275735A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/125—Rotary tool drive mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding involving metallurgical change
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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Abstract
The invention discloses a rotary friction extrusion auxiliary electromagnetic pulse material increase device and a method, and the device comprises a workpiece, a rotary friction extrusion supporting mechanism positioned below the workpiece and an electromagnetic head positioned right above the workpiece, wherein the rotary friction extrusion supporting mechanism comprises a first supporting rod, a second supporting rod and a third supporting rod, the first supporting rod is vertical, the second supporting rod is inclined, the bottom end of the second supporting rod is fixedly connected with the top end of the first supporting rod, the rotary friction extrusion transmission mechanism can drive the first supporting rod to rotate around the axis of the first supporting rod, the bottom end of the third supporting rod is hinged with the top end of the second supporting rod, the top end of a spring is fixedly connected with the top end of the third supporting rod, the bottom end of the spring is fixedly connected with the bottom end of the second supporting rod, the top end of the third supporting rod is fixedly provided with a friction head, and the friction head can be in close contact with the bottom surface of the workpiece; an electromagnetic coil is arranged in the electromagnetic head and electrically connected with a capacitor and a discharge circuit. The invention can quickly eliminate the defects of microcracks, cavities and the like at the electromagnetic pulse additive material interface.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a rotary friction extrusion auxiliary electromagnetic pulse additive device and a method.
Background
The electromagnetic pulse material increase technology is a high-speed impact solid-state connection technology for metal material increase by using an external magnetic field as energy input, and can effectively realize the material increase of the connection of dissimilar metals. The method has the advantages of high speed, no pollution and almost no heat affected zone in the additive process, and the additive interface can effectively inhibit the generation of intermetallic compounds. As a novel, environment-friendly and efficient solid-phase additive connection technology, the material has a very large application prospect in the aerospace and automobile industries. But the surface treatment requirement in the additive process is strict, and micro defects such as holes, air pockets, cracks and the like are easy to appear at the interface, so that the performance of the additive part is reduced.
In order to eliminate defects such as micro cracks, cavities and the like at an electromagnetic pulse additive material interface, the following patents are provided: a method (ZL201780007332.4) for using impact weld forming in an additive manufacturing process to reduce additive area and improve performance of an additive by pinching off the wire, the method comprising providing a wire having a powder filled metal core within a sheath and then inserting the wire into a conduit having an opening. Thereafter providing an energy pulse (electromagnetic pulse or laser pulse) that interacts with the sheath to pinch off a segment of the wire, wherein the energy pulse advances the segment toward the substrate at a sufficient speed that the powder-filled metal core is welded to the substrate; but this additive method is less efficient.
Disclosure of Invention
The invention aims to provide a rotary friction extrusion auxiliary electromagnetic pulse additive device and a rotary friction extrusion auxiliary electromagnetic pulse additive method, which are used for solving the problems in the prior art and improving the efficiency of eliminating the defects of microcracks, cavities and the like at an electromagnetic pulse additive interface.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a rotary friction extrusion auxiliary electromagnetic pulse material increase device which comprises a workpiece, a rotary friction extrusion supporting mechanism positioned below the workpiece and an electromagnetic head positioned right above the workpiece, the rotary friction extrusion supporting mechanism comprises a first supporting rod, a second supporting rod and a third supporting rod, the first supporting rod is vertical, the second supporting rod is inclined, the bottom end of the second supporting rod is fixedly connected with the top end of the first supporting rod, the rotary friction extrusion transmission mechanism can drive the first supporting rod to rotate around the axis of the first supporting rod, the bottom end of the third supporting rod is hinged with the top end of the second supporting rod, the top end of the spring is fixedly connected with the top of the third supporting rod, the bottom end of the spring is fixedly connected with the bottom end of the second supporting rod, the top end of the third supporting rod is fixedly provided with a friction head, and the friction head can be in close contact with the bottom surface of the workpiece; and an electromagnetic coil is arranged in the electromagnetic head and electrically connected with a capacitor and a discharge circuit.
Preferably, the rotary friction extrusion transmission mechanism comprises a housing, a driving motor and a transmission shaft, the driving motor is fixedly arranged in the housing, the transmission shaft is in running fit with the housing, a driving gear is fixedly arranged on an output shaft of the driving gear, a driven gear meshed with the driving gear is fixedly arranged on the transmission shaft, a driving bevel gear is further fixedly arranged on the transmission shaft, a driven bevel gear meshed with the driving bevel gear is fixedly arranged at the bottom end of the first supporting rod, and the first supporting rod is in running fit with the housing.
Preferably, still include base, elevating system, elevating platform and workstation, elevating system sets firmly on the base, elevating system can drive the elevating platform goes up and down, the workstation sets up on the elevating platform, the workstation can be relative the elevating platform carries out the slip of X direction and Y direction.
Preferably, the electromagnetic head further comprises a box body bracket fixedly arranged on the base, and the electromagnetic head is fixedly arranged on the box body bracket; one end of the shell is fixedly connected with the box body support.
Preferably, the device also comprises two vertically arranged workpiece fixing plates, the workpiece fixing plates are in sliding fit with the workbench, and the two workpiece fixing plates are arranged at intervals and in parallel; and two ends of the workpiece are respectively fixed at the top ends of the two workpiece fixing plates.
Preferably, the rotary friction extrusion transmission mechanism and the rotary friction extrusion supporting mechanism are both positioned between the two workpiece fixing plates.
Preferably, the top ends of the two workpiece fixing plates are respectively connected with a clamping plate through bolts, and the clamping plate and the workpiece fixing plates can clamp the end parts of the workpieces.
Preferably, two sliding blocks are fixedly arranged at the bottom end of each workpiece fixing plate, two sliding grooves are formed in the top surface of the workbench, the two sliding grooves correspond to the two sliding blocks on the same workpiece fixing plate one by one, and the sliding blocks are in sliding fit with the corresponding sliding grooves.
The invention also provides a rotary friction extrusion auxiliary electromagnetic pulse additive method, which comprises the following steps:
(1) placing a first flat workpiece on two workpiece fixing plates, and clamping two ends of the first flat workpiece by using clamping plates; the rotary friction extrusion supporting mechanism is driven to rotate by the rotary friction extrusion transmission mechanism, and the first flat workpiece is preformed under the high-speed rotary extrusion action of the friction head to form a curved workpiece; moving the position of the first flat work piece by moving the table during the preforming to enhance the preforming effect of the first flat work piece;
(2) then, placing a second flat workpiece on the curved surface workpiece, and enabling the second flat workpiece added later to form metallurgical bonding with the curved surface workpiece through electromagnetic force generated by an electromagnetic coil to form a composite plate;
(3) and continuously driving the rotary friction extrusion supporting mechanism to rotate through the rotary friction extrusion transmission mechanism, and enabling the friction head to rotate at a high speed and extrude the composite plate to reach the required accurate shape.
Compared with the prior art, the invention has the following technical effects:
the rotary friction extrusion auxiliary electromagnetic pulse additive device can quickly eliminate the defects of microcracks, cavities and the like at the electromagnetic pulse additive interface. According to the rotary friction extrusion auxiliary electromagnetic pulse material increase device, the material increase of the complex curved surface is completed through the electromagnetic force generated by the upper electromagnetic head, and the material to be processed is locally and violently subjected to plastic deformation, mixing and crushing through the violent friction extrusion action of the friction head at the lower part, so that the densification, homogenization and refinement of the microstructure can be realized. The defects of microcracks, holes and the like at the interface can be eliminated on the electromagnetic pulse additive interface, and crystal grains can be refined, so that the performance of the material is improved; and in the material increase, the lower friction head also plays a supporting role.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rotary friction extrusion auxiliary electromagnetic pulse additive manufacturing apparatus according to the present invention;
FIG. 2 is a schematic view of a part of a rotary friction extrusion auxiliary electromagnetic pulse additive manufacturing apparatus according to the present invention;
FIG. 3 is a schematic diagram of a second partial structure of the rotary friction extrusion auxiliary electromagnetic pulse additive manufacturing apparatus according to the present invention;
FIG. 4 is a flow chart of additive manufacturing using a rotary friction extrusion assisted electromagnetic pulse additive manufacturing apparatus of the present invention;
wherein: 100. rotating friction extrusion auxiliary electromagnetic pulse additive device; 1. an electromagnetic head; 101. an electromagnetic coil; 2. a workpiece; 3. a splint; 4. a rotating friction extrusion support mechanism; 5. a rotary friction extrusion transmission mechanism; 6. a work table; 601. a chute; 7. a base; 8. a lifting mechanism; 9. a lifting platform; 10. a box body bracket; 11. a workpiece fixing plate; 1101. a slider; 401. a friction head; 402. a spring; 403. a connecting rod; 404. a driven bevel gear; 405. a first support bar; 406. a second support bar; 407. a third support bar; 501. a housing; 502. a drive bevel gear; 503. a drive shaft; 504. a driving gear; 505. a drive motor; 506. a driven gear.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a rotary friction extrusion auxiliary electromagnetic pulse additive device and a rotary friction extrusion auxiliary electromagnetic pulse additive method, which are used for solving the problems in the prior art and improving the efficiency of eliminating the defects of microcracks, cavities and the like at an electromagnetic pulse additive interface.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4: the embodiment provides a rotary friction extrusion auxiliary electromagnetic pulse material increase device 100, which comprises a base 7, a box body support 10, a lifting mechanism 8, a lifting platform 9, a workbench 6, a workpiece 2, a rotary friction extrusion supporting mechanism 4 positioned below the workpiece 2 and an electromagnetic head 1 positioned right above the workpiece 2, wherein the electromagnetic head 1 is fixedly arranged on the box body support 10; the lifting mechanism 8 and the box body support 10 are respectively fixedly arranged on the base 7, the lifting mechanism 8 can drive the lifting platform 9 to lift, the workbench 6 is arranged on the lifting platform 9, and the workbench 6 can slide in the X direction and the Y direction relative to the lifting platform 9;
the rotating friction extrusion supporting mechanism 4 comprises a first supporting rod 405, a second supporting rod 406 and a third supporting rod 407, the first supporting rod 405 is vertical, the second supporting rod 406 is inclined, the bottom end of the second supporting rod 406 is fixedly connected with the top end of the first supporting rod 405, the rotating friction extrusion transmission mechanism 5 can drive the first supporting rod 405 to rotate around the axis of the first supporting rod, the bottom end of the third supporting rod 407 is hinged to the top end of the second supporting rod 406, the top end of the spring 402 is fixedly connected with the top end of the third supporting rod 407, the bottom end of the spring 402 is fixedly connected with the bottom end of the second supporting rod 406, the top end of the third supporting rod 407 is fixedly provided with a friction head 401, and the friction head 401 can be in close contact with the bottom surface of the workpiece 2. The rotating friction extrusion transmission mechanism 5 comprises a shell 501, a driving motor 505 and a transmission shaft 503, one end of the shell 501 is fixedly connected with the box body support 10, and in the material increase process, the electromagnetic head 1 and the friction head 401 can keep the relative positions motionless, so that the material increase process can be completed only by moving the workbench. The driving motor 505 is fixedly arranged in the housing 501, the transmission shaft 503 is in running fit with the housing 501, the driving gear 504 is fixedly arranged on the output shaft of the driving gear, the driven gear 506 meshed with the driving gear 504 is fixedly arranged on the transmission shaft 503, the driving bevel gear 502 is further fixedly arranged on the transmission shaft 503, the driven bevel gear 404 meshed with the driving bevel gear 502 is fixedly arranged at the bottom end of the first supporting rod 405, and the first supporting rod 405 is in running fit with the housing 501.
An electromagnetic coil 101 is provided in the electromagnetic head 1, and a capacitor and a discharge circuit are electrically connected to the electromagnetic coil 101. Electromagnetic pulse shaping principle: energy is stored in a capacitor, a discharge switch is closed instantly, the capacitor, a coil and a discharge circuit form an RLC oscillation circuit, and a large transient alternating current flows through a working coil to generate a strong alternating magnetic field. According to the law of electromagnetic induction and the skin effect, the magnetic field generates an induced current on the metal surface opposite to the coil current, and the induced current also generates an induced magnetic field to prevent the magnetic field of the coil from penetrating the workpiece 2. A time-varying repulsive magnetic force is generated between the coil and the workpiece 2, and the workpiece 2 is deformed at high speed by the action of the magnetic force. After the high-voltage switch is closed, the energy stored in the capacitor is released instantly, strong pulse current can pass through the forming coil, and eddy current is formed on the surface of the outer-layer workpiece 2 due to electromagnetic induction. Under the action of electromagnetic force, the outer layer workpiece 2 collides against the inner layer workpiece 2 at a high speed, and the collision force can reach GPa, so that surface atoms of the two workpieces 2 are in close contact to achieve metallurgical bonding. When the electromagnetic pulse realizes metallurgical bonding between two plates, because the speed is high, a local unfused area is inevitably generated at a bonding interface, so that local plastic deformation is generated by rotary friction extrusion, and the unfused area is eliminated.
The rotary friction extrusion auxiliary electromagnetic pulse material increasing device 100 further comprises two vertically arranged workpiece fixing plates 11, the workpiece fixing plates 11 are in sliding fit with the workbench 6, and the two workpiece fixing plates 11 are arranged in parallel at intervals; the two ends of the workpiece 2 are respectively fixed at the top ends of the two workpiece fixing plates 11. The rotary friction extrusion transmission mechanism 5 and the rotary friction extrusion supporting mechanism 4 are both positioned between the two workpiece fixing plates 11. The top ends of the two workpiece fixing plates 11 are respectively connected with a clamping plate 3 through bolts, and the clamping plates 3 and the workpiece fixing plates 11 can clamp the end parts of the workpieces 2. The bottom end of each workpiece fixing plate 11 is fixedly provided with two sliding blocks 1101, the top surface of the workbench 6 is provided with two sliding grooves 601, the two sliding grooves 601 correspond to the two sliding blocks 1101 on the same workpiece fixing plate 11 one by one, and the sliding blocks 1101 are in sliding fit with the corresponding sliding grooves 601.
As shown in fig. 4, the present embodiment further provides a method for performing spin friction extrusion assisted electromagnetic pulse additive manufacturing by using the spin friction extrusion assisted electromagnetic pulse additive manufacturing apparatus 100, including the following steps:
(1) placing a first flat plate workpiece a on two workpiece fixing plates 11, and clamping two ends of the first flat plate workpiece a by using clamping plates 3; the rotary friction extrusion supporting mechanism 4 is driven to rotate by the rotary friction extrusion transmission mechanism 5, and the first flat workpiece a is preformed under the high-speed rotary extrusion action of the friction head 401 to form a curved workpiece; the position of the first flat workpiece a is moved by moving the working table 6 during the preforming process to enhance the preforming effect of the first flat workpiece a;
(2) then placing a second flat plate workpiece b on the curved surface workpiece, and enabling the second flat plate workpiece b added later to form metallurgical bonding with the curved surface workpiece through electromagnetic force generated by an electromagnetic coil to form a composite plate;
(3) the rotary friction extrusion supporting mechanism 4 is continuously driven to rotate by the rotary friction extrusion transmission mechanism 5, and the friction head 401 rotates at a high speed and extrudes the composite plate to reach the required precise shape.
Because the electromagnetic force generated by the electromagnetic head 1 is large, the workpiece 2 below is easy to deform during free forming, so that rotary friction extrusion support is applied to the bottom of the workpiece 2 to assist electromagnetic pulse additive manufacturing, and further free-form surface accurate forming after the material of the sheet workpiece 2 is added can be realized; since an unfused area is inevitably generated at the interface in the electromagnetic pulse material increase process, the present embodiment promotes the metal at the interface to generate local plastic deformation by means of rotating friction extrusion, so as to weaken or even eliminate the unfused area generated in the material increase process; the rotating friction extrusion support is a flexible support, and a spring 402 is arranged between the friction head 401 and the connecting rod 403 for damping, so that the failure of a transmission mechanism caused by rigid impact in the material increase process is avoided.
In the description of the present invention, it should be noted that the terms "top", "bottom", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a supplementary electromagnetic pulse vibration material disk of rotatory friction extrusion which characterized in that: the electromagnetic head is positioned right above the workpiece, the rotary friction extrusion supporting mechanism comprises a first supporting rod, a second supporting rod and a third supporting rod, the first supporting rod is vertical, the second supporting rod is inclined, the bottom end of the second supporting rod is fixedly connected with the top end of the first supporting rod, the rotary friction extrusion transmission mechanism can drive the first supporting rod to rotate around the axis of the rotary friction extrusion transmission mechanism, the bottom end of the third supporting rod is hinged with the top end of the second supporting rod, the top end of a spring is fixedly connected with the top end of the third supporting rod, the bottom end of the spring is fixedly connected with the bottom end of the second supporting rod, a friction head is fixedly arranged at the top end of the third supporting rod, and the friction head can be in close contact with the bottom surface of the workpiece; and an electromagnetic coil is arranged in the electromagnetic head and electrically connected with a capacitor and a discharge circuit.
2. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 1, wherein: the rotary friction extrusion transmission mechanism comprises a shell, a driving motor and a transmission shaft, wherein the driving motor is fixedly arranged in the shell, the transmission shaft is in running fit with the shell, a driving gear is fixedly arranged on an output shaft of the driving gear, a driven gear meshed with the driving gear is fixedly arranged on the transmission shaft, a driving bevel gear is further fixedly arranged on the transmission shaft, a driven bevel gear meshed with the driving bevel gear is fixedly arranged at the bottom end of the first supporting rod, and the first supporting rod is in running fit with the shell.
3. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 2, wherein: still include base, elevating system, elevating platform and workstation, elevating system sets firmly on the base, elevating system can drive the elevating platform goes up and down, the workstation sets up on the elevating platform, the workstation can be relative the elevating platform carries out the slip of X direction and Y direction.
4. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 3, wherein: the electromagnetic head is fixedly arranged on the box body support; one end of the shell is fixedly connected with the box body support.
5. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 3, wherein: the device also comprises two vertically arranged workpiece fixing plates, wherein the workpiece fixing plates are in sliding fit with the workbench and are arranged at intervals and in parallel; and two ends of the workpiece are respectively fixed at the top ends of the two workpiece fixing plates.
6. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 5, wherein: the rotary friction extrusion transmission mechanism and the rotary friction extrusion supporting mechanism are both positioned between the two workpiece fixing plates.
7. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 5, wherein: the top ends of the two workpiece fixing plates are respectively connected with clamping plates through bolts, and the clamping plates and the workpiece fixing plates can clamp the end parts of the workpieces.
8. The rotary friction extrusion assisted electromagnetic pulse additive device of claim 5, wherein: every the bottom of work piece fixed plate all sets firmly two sliders, the top surface of workstation is provided with two spouts, two the spout with same on the work piece fixed plate two the slider one-to-one, the slider with correspond spout sliding fit.
9. A rotary friction extrusion auxiliary electromagnetic pulse additive method is characterized by comprising the following steps:
(1) placing a first flat workpiece on two workpiece fixing plates, and clamping two ends of the first flat workpiece by using clamping plates; the rotary friction extrusion supporting mechanism is driven to rotate by the rotary friction extrusion transmission mechanism, and the first flat workpiece is preformed under the high-speed rotary extrusion action of the friction head to form a curved workpiece; moving the position of the first flat work piece by moving the table during the preforming to enhance the preforming effect of the first flat work piece;
(2) then, placing a second flat workpiece on the curved surface workpiece, and enabling the second flat workpiece added later to form metallurgical bonding with the curved surface workpiece through electromagnetic force generated by an electromagnetic coil to form a composite plate;
(3) and continuously driving the rotary friction extrusion supporting mechanism to rotate through the rotary friction extrusion transmission mechanism, and enabling the friction head to rotate at a high speed and extrude the composite plate to reach the required accurate shape.
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| CN202110690497.4A CN113275735B (en) | 2021-06-22 | 2021-06-22 | Rotary friction extrusion auxiliary electromagnetic pulse material increase device and method |
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| CN202110690497.4A CN113275735B (en) | 2021-06-22 | 2021-06-22 | Rotary friction extrusion auxiliary electromagnetic pulse material increase device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535612A (en) * | 2022-02-24 | 2022-05-27 | 西安建筑科技大学 | Vortex aerodynamic force rotary grinding additive manufacturing device and method |
| CN114799749A (en) * | 2022-04-22 | 2022-07-29 | 南昌航空大学 | Method for preparing foamed aluminum sandwich material by rotary friction extrusion composite electromagnetic pulse |
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