CN113732704A - Automatic electric arc additive and impact strengthening composite manufacturing device and method - Google Patents
Automatic electric arc additive and impact strengthening composite manufacturing device and method Download PDFInfo
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- CN113732704A CN113732704A CN202111135459.9A CN202111135459A CN113732704A CN 113732704 A CN113732704 A CN 113732704A CN 202111135459 A CN202111135459 A CN 202111135459A CN 113732704 A CN113732704 A CN 113732704A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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Abstract
The invention discloses an automatic electric arc additive and impact strengthening composite manufacturing device and method. The electric arc additive manufacturing method combines the electric arc additive manufacturing technology and the impact strengthening technology, is beneficial to releasing residual stress in the electric arc additive manufacturing process, refining crystal grains grown by heat accumulation, changing the original stress field, obviously reducing electric arc additive deformation and cracking and improving mechanical properties; the composite manufacturing device has the advantages of reasonable structural design, simplicity and convenience in operation, high automation degree and strong applicability, and compared with the traditional impact reinforcement, the robot has high position precision, high impact efficiency and high response speed in impact reinforcement, meets the requirements of environmental protection, and is suitable for metal materials with large residual stress.
Description
Technical Field
The invention relates to an additive manufacturing device and method, in particular to an automatic electric arc additive and impact strengthening composite manufacturing device and method.
Background
The electric arc additive manufacturing is an additive manufacturing technology which takes metal wire as a forming material and electric arc or plasma arc as a heat source. The electric arc additive manufacturing technology receives more and more attention due to the advantages of low cost, high efficiency, high flexibility degree and the like, and particularly has great advantages in the aspect of efficient and rapid manufacturing of large-size structural parts. However, in industrial specific applications, due to the large heat input of the arc, the microstructure inside the component is mostly columnar crystal and dendritic crystal, and the microstructure can significantly reduce the mechanical property of the component and cause anisotropy, and the problem greatly limits the practical application of the arc additive manufacturing technology in the industrial field.
The applicant believes that defects such as dendrites and pores generated in the arc additive process are important factors influencing the performance of a component, and Chinese patent 'CN 109605039A, an arc additive and electric auxiliary hot rolling forming composite manufacturing method and device' apply high pressure to the surface of metal through a roller to enable the material to generate large plastic deformation, reduce the roughness of the surface of a deposition layer in the arc additive process, and simultaneously, crush coarse columnar crystal tissues and obviously improve the hardness and strength of the deposition layer. According to the scheme, the stacked component is subjected to strengthening treatment in a hot rolling mode, the section form of the roller is required to be matched with the size of the component, the processing efficiency is low, and the roller is difficult to apply to a complex component.
Chinese patent "CN 106735967B, a method for controlling shape and controlling performance in ultrasonic vibration assisted arc additive manufacturing", applies ultrasonic vibration to a tool bit to make the tool bit perform finishing and surface strengthening treatment on the surface of a melting-deposited layer by high-frequency impact to improve the dimensional accuracy of the melting-deposited layer, reduce the residual stress, and refine the surface grains, thereby achieving the purpose of controlling shape and controlling performance in arc additive manufacturing. According to the technical scheme, the accumulated members are subjected to finishing and strengthening treatment through the ultrasonic cutter head of the machine tool, the size of the processed members is greatly limited, and the application in the production of large and medium-sized members is less.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide an automatic electric arc additive and impact reinforcement composite manufacturing device and method, which have the characteristics of rapidness, high efficiency, low cost and the like in the production and manufacturing of large and medium-sized complex components, and realize the additive manufacturing and impact reinforcement integrated technical support which has the advantages of controllable forming energy, high manufacturing flexibility, various forming structures, wide available materials and no size structure limitation.
The technical scheme is as follows: the automatic material feeding device comprises a first automatic guide vehicle, a second automatic guide vehicle and a workbench, wherein the first automatic guide vehicle is arranged on one side of the workbench, the second automatic guide vehicle is arranged on the other side of the workbench, an electric arc material feeding module is installed on the first automatic guide vehicle, an impact strengthening module is installed on the second automatic guide vehicle, and the first automatic guide vehicle and the second automatic guide vehicle are both connected with a control system.
The electric arc vibration material disk module include electric arc vibration material disk robot, electric arc vibration material disk robot install on first automatic guide car, electric arc vibration material disk robot's end-to-end connection has welder, welder on be connected with electric arc vibration material disk controller and infrared temperature sensor.
The welding gun is connected with the protective gas storage tank and the wire feeder, and the output end of the wire feeder is provided with a wire feeder straightening mechanism for straightening the welding wire.
The electric arc additive controller is connected with the welding gun through an optical fiber.
The infrared temperature sensor is connected to a welding gun at the tail end of the electric arc additive through a connecting rod mechanism, and the temperature measuring position of the infrared temperature sensor can be accurately adjusted through the connecting rod mechanism, so that the temperature of the laser heating position can be accurately monitored.
The impact strengthening module comprises an impact strengthening robot, the impact strengthening robot is installed on the second automatic guide vehicle, the tail end of the impact strengthening robot is connected with an ultrasonic impact gun, and the ultrasonic impact gun is connected with an ultrasonic impact gun controller.
The ultrasonic impact gun comprises an ultrasonic transducer and an ultrasonic amplitude transformer, wherein the ultrasonic amplitude transformer is arranged below the ultrasonic transducer, a clamping handle is arranged at the bottom of the ultrasonic amplitude transformer, and an impact tool head is clamped at the bottom of the clamping handle.
The workstation include biax revolving stage workstation, biax revolving stage workstation is located supersound impact rifle and welder below, anchor clamps are all installed to the both sides of biax revolving stage workstation, the common centre gripping base plate of anchor clamps of both sides, biax revolving stage workstation bottom be equipped with circulating water cooling system.
And an air extractor is fixed above the workbench, and is connected with an air extractor controller to absorb harmful gas in the machining process.
An automatic electric arc additive and impact strengthening composite manufacturing method comprises the following steps:
s1, structural design and processability optimization of the component: optimizing according to problems of the member in the substrate stacking process by drawing the member with the aid of a computer;
s2, slicing and path planning are carried out on the component through software according to the structural characteristics of the component, the material characteristics and the interaction mechanism among the electric arc additive process parameters;
s3, polishing the surface of the substrate, cleaning the surface of the substrate, and fixing the substrate on a workbench by using a clamp;
s4, forming an electric arc additive deposition layer on the surface of the base material by controlling the matching movement of the welding gun and the wire feeder;
s5, controlling the cooperation motion of the impact robot and the impact gun when one or more layers of deposition are carried out, and impacting the designated position of the deposition layer;
and S6, controlling the arc additive robot to the initial position of the second layer or the appointed layer after the impact is finished, measuring the surface temperature of the deposition layer through a temperature sensor, starting the arc additive robot when the surface temperature of the deposition layer reaches the preset forming temperature, repeating the steps S5 and S6, and compositely manufacturing the shape of the formed workpiece through layer-by-layer accumulation and impact reinforcement.
Has the advantages that:
(1) the electric arc additive manufacturing method combines the electric arc additive manufacturing technology and the impact strengthening technology, is beneficial to releasing residual stress in the electric arc additive manufacturing process, refining crystal grains grown by heat accumulation, changing the original stress field, obviously reducing electric arc additive deformation and cracking and improving mechanical properties; the composite manufacturing device has the advantages of reasonable structural design, simple and convenient operation, high automation degree and strong applicability, and compared with the traditional impact reinforcement, the robot has high position precision of impact reinforcement, high impact efficiency and high response speed, meets the requirements of environmental protection, and is suitable for metal materials with large residual stress, such as titanium alloy, high-temperature alloy, magnesium alloy, intermetallic compounds and the like;
(2) the invention combines the electric arc material increase and impact reinforcement technology with the robot, realizes the electric arc material increase and impact reinforcement composite manufacturing of complex components by a high-flexibility robot platform and a temperature sensor, has the advantages of controllable forming energy, high manufacturing flexibility, various forming structures, wide available materials and the like, and can be applied to the rapid processing forming of metal components and the construction of integrated structures;
(3) according to the automatic electric arc additive and impact strengthening composite manufacturing method based on the double robots, the production form is more flexible through the movable automatic guide vehicle which is simple and easy to operate, compared with the robot with a fixed position, the problem that additive manufacturing cannot be carried out due to an overlarge structure is solved, and the method has the advantages of no limitation of part size and no limitation of structural form;
(4) the composite manufacturing device provided by the invention has the advantages of reasonable structural design, simplicity and convenience in operation, high automation degree and strong applicability. Compared with the traditional impact reinforcement, the robot has the advantages that the position accuracy of the robot impact reinforcement is high, the impact efficiency is high, the response speed is high, the requirement for green environmental protection is met, the reinforcement effect is universally applicable to metal materials which are greatly influenced by residual stress, such as titanium alloy, high-temperature alloy, magnesium alloy, intermetallic compounds and the like, meanwhile, the required raw materials are convenient to transport, the intelligent degree is high, and for major engineering projects, the equipment is transported to a destination and then started to produce, and the manpower and material resources generated by transportation can be greatly reduced in manufacturing.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a torch configuration of the present invention;
fig. 3 is a schematic view of the ultrasonic impact gun of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, the welding machine comprises a first automatic guide vehicle 3, a second automatic guide vehicle 21 and a workbench, wherein the first automatic guide vehicle 3 is arranged on one side of the workbench, the second automatic guide vehicle 21 is arranged on the other side of the workbench, an arc additive module is installed on the first automatic guide vehicle 3, the automatic guide vehicle can be matched with an arc additive robot to weld in an adaptive direction and speed through a controller, and an impact strengthening module is installed on the second automatic guide vehicle 21.
Electric arc vibration material disk module includes electric arc vibration material disk robot 7, electric arc vibration material disk robot 7 installs on first automatic guide car 3, electric arc vibration material disk robot 7's end-to-end connection has welder 13, be connected with electric arc vibration material disk controller 9 and infrared temperature sensor 14 on welder 13, electric arc vibration material disk controller 9 passes through optic fibre 11 and is connected with welder 13, infrared temperature sensor 14 passes through link mechanism and connects on electric arc vibration material disk terminal welder 13, can accurately adjust its temperature measurement position through link mechanism, the realization is to the accurate monitoring of laser heating position temperature. The welding gun 13 is further connected with a shielding gas storage tank 1 and a wire feeder 4, the shielding gas storage tank 1 conveys pure argon shielding gas to the welding gun 13, the wire feeder 4 is connected with the welding gun 13 through a wire feeding pipe 6, welding wires 13-2 are fed into the welding gun 13, and the output end of the wire feeder 4 is provided with a wire feeder straightening mechanism 5.
The current range of the electric arc additive welding power supply is 0-400A; the optional process comprises: pulse, direct current, CMT (cold metal transition technology); the CMT mode comprises the following steps according to output energy from high to low: CMT P (pulse), CMT Advance (polarity change), CMT + P Advance (pulse + polarity change). The welding machine of the electric arc additive robot supports materials such as aluminum alloy, nickel-based high-temperature alloy, titanium alloy and stainless steel, and the diameters of wires support 0.8mm, 1.0mm and 1.2 mm.
As shown in figure 2, the welding gun 13 comprises a welding wire 13-2, a shell 13-3 for protecting the inner part of the welding gun, and a protective gas 13-5 for protecting an arc 13-6 from being oxidized in the arc striking process of the welding wire 13-2, wherein the welding wire 13-2 penetrates through the shell 13-3, a welding gun straightening mechanism 13-1 is arranged at the upper part of the welding wire 13-2 and used for straightening the welding wire 13-2, and a contact tip 13-4 is arranged at the outer side of the welding wire 13-2. The protective gas 13-5 of the invention is pure argon, the flow of the protective gas is above 20L/min when the aluminum alloy wires are stacked, and the flow of the protective gas is above 15L/min when the nickel-based high-temperature alloy wires are stacked. The electric arc material increase process can be suspended in real time, the layer height is adjusted, the continuity of the machining process is improved, and meanwhile, databases of electric arc material increase under different materials and different parameters are enriched. The starting point of each layer of accumulation in the electric arc material increase process is random, so that the interference caused by overhigh height when the starting point is repeatedly accumulated can be reduced, and the subsequent process is influenced.
The impact strengthening module comprises an impact strengthening robot 20, the impact strengthening robot 20 is installed on a second automatic guide vehicle 21, the tail end of the impact strengthening robot 20 is connected with an ultrasonic impact gun 17, and the ultrasonic impact gun 17 is connected with an ultrasonic impact gun controller 18. As shown in FIG. 3, the ultrasonic impact gun 17 comprises an ultrasonic transducer 17-1 and an ultrasonic horn 17-2, the ultrasonic horn 17-2 is arranged below the ultrasonic transducer 17-1, a clamping handle 17-3 is arranged at the bottom of the ultrasonic horn 17-2, an impact tool head 17-4 is clamped at the bottom of the clamping handle 17-3, and the impact tool head 17-4 applies high-frequency ultrasonic impact to the deposition layer 10 on the substrate 12 in a working state, so that surface strengthening is realized. In an ultrasonic field coupling sedimentary layer electric arc system, an ultrasonic field sequentially passes through shielding gas, electric arc plasma, molten drops and a sedimentary layer, and the effects of stabilizing voltage and arc, promoting molten drop transition, improving surface forming quality, inhibiting welding defects, refining grains and optimizing stress distribution are achieved.
The rated power of the ultrasonic impact gun 17 is 1000w, the size is 85 multiplied by 140 multiplied by 700, the weight is 7kg, the working frequency is 18-22kHZ, the maximum amplitude is 0-50 mu m, the working frequency and the maximum amplitude of the ultrasonic impact gun 17 are automatically matched with the scanning condition, and the impact processing speed is 0.3-0.5 m/min; the impact head is concave to adapt to the shape of the accumulated weld bead of the workpiece.
The impact strengthening robot 20, the electric arc additive robot 7 and the automatic guiding vehicle are all connected with the control system, the electric arc additive robot, the impact strengthening robot and the automatic guiding vehicle are connected under the same program through PC adjustment, and the electric arc additive robot and the impact strengthening double-robot collaborative additive manufacturing is completed, so that the production efficiency is improved. The robot is controlled by the PC to move to realize accurate positioning of the electric arc additive and ultrasonic impact positions, and meanwhile, the angle of a welding gun of the electric arc additive and the impact angle of an ultrasonic impact gun can be adjusted according to the overall dimension and the heat output condition of the electric arc additive deposition layer, so that the accurate control of the output heat and the forming performance is realized.
The six-axis industrial robot for the robot selection is structurally provided with parts similar to walking, waist turning, large arms, small arms, wrists, paws and the like of a human, and the sensor of the six-axis industrial robot improves the self-adaptive capacity of the industrial robot to the surrounding environment. Can be reprogrammed along with the change of the working environment and the change of a workpiece, and is suitable for flexible production of arc material increase and impact reinforcement in various scenes. Can cooperatively move under the control of a PC controller to finish the cooperative composite manufacturing of electric arc additive and impact reinforcement. The repeated positioning precision of the electric arc welding machine reaches +/-0.02 mm, the electric arc welding machine has the characteristics of high flexibility, high automation and good repeatability, and the electric arc welding machine can remarkably improve electric arc material increase, ultrasonic impact precision and manufacturing efficiency.
The workbench comprises a double-shaft rotary table workbench 19-1, the double-shaft rotary table workbench 19-1 is positioned below the ultrasonic impact gun 17 and the welding gun 13, the two sides of the double-shaft rotary table workbench 19-1 are respectively provided with a clamp 8, the clamps 8 on the two sides clamp the substrate 12 together, and the substrate 12 is fixed on the double-shaft rotary table workbench 19-1. The bottom of the double-shaft turntable workbench 19-1 is provided with a circulating water cooling system 22 which can take away heat generated in the electric arc material increase process, and the system can adjust water pressure and water temperature to play a role in constant temperature protection. A base 19-2 is connected below the double-shaft turntable workbench 19-1, and a Y rotating shaft 19-3 and a Z rotating shaft 19-4 are arranged on the base 19-2. An air extractor 15 for absorbing harmful gas in the processing process is fixed above the workbench, and the air extractor 15 is connected with an air extractor controller 16. The power of the air extractor 15 is coordinated with the flow of the shielding gas, and the shielding gas can be protected in the accumulation process if the power is too large or too small.
The robot motion parameters comprise welding gun track, welding direction, welding attitude and welding speed. The welding gun track is divided into single welding and multi-welding, the lap joint rate between welding beads needs to be considered in the way of welding, and the welding gun track is selected according to the diameter of a welding wire, the welding speed and the like in the electric arc material increase process and is generally selected to be 30-50%; the welding direction can be divided into reciprocating welding and equidirectional welding; the welding attitude has vertical welding and inclined welding relative to the substrate, and the welding speed is related to the selected welding wire material and the thickness of the target component, and is generally selected to be 0.3-0.8 m/min.
The arc additive parameters include arc mode, wire feed speed, welding current, welding voltage, arc length correction, and torch height. The arc mode includes pulse, direct current, CMT (cold metal transition technology) mode; the CMT mode comprises the following steps according to output energy from high to low: CMT P (pulse), CMT Advance (polarity change), CMT + P Advance (pulse + polarity change). The maximum current of the arc additive welding power supply in the direct current mode can reach 400A. The wire feeding speed is related to the selected welding wire material and the thickness of the target component, and is generally selected to be 3-8 m/min; the welding current and the welding voltage are related to a welding mode, the current is generally selected to be 100-200A, and the voltage is selected to be 10-30V; the arc length correction is-10% to + 10%, and the larger the arc length correction is, the more sufficient the bead spreading is and the smaller the height is. The height of the welding gun is 12-15 mm from the port of the fairing to the substrate, and the welding gun is easily blocked due to too short distance, so that the fault of the wire feeder is caused; the protective gas cannot generate a protective effect on the bottom of the electric arc when the distance is too far, the electric arc is seriously oxidized, and the electric arc is accumulated and blackened, so that the performance is influenced.
The ultrasonic impact parameters include working frequency, maximum amplitude, and processing speed. The working frequency is as follows: 18-22KHZ, automatic scanning and matching according to the impact gun, and one-key operation; maximum amplitude: 0-50 μm, stepless adjustable, according to material setting; the processing speed is 0.3-0.5 m/min.
The material parameters include the material and diameter of the welding wire, the material and size of the substrate, the waiting time after each pass is finished, and the overheating threshold temperature of the welding bead. The diameters of the welding wires can be selected from 0.8mm, 1.0mm and 1.2mm, the thicknesses of the stacked components are directly influenced by the diameters of different welding wires, the thinner welding wire has higher forming precision, and the precision requirement on the robot is higher; the substrate material is consistent or homologous with the welding wire material, so that the compatibility of the substrate in the electric arc additive process is ensured; stopping the accumulation for 1-2 min each time in the material increase process, starting a water cooling system under the substrate, measuring the real-time temperature through an infrared temperature sensor, continuing to perform electric arc material increase and impact reinforcement when the temperature is reduced to about 200 ℃, and repeating the accumulation until all tracks are completed.
The substrate of the embodiment is 2319 aluminum alloy with the size of 450mm × 450mm × 10mm, the welding wire material is 2319 aluminum alloy with the diameter of 1.2mm, and arc additive manufacturing is performed by adopting a cold metal transition process (CMT) mode of CMT P (pulse) + A (variable polarity), which comprises the following specific steps:
(1) the method comprises the following steps of (1) optimizing a component through computer-aided drawing according to the problems of welding discontinuity, oxidation blackening, stacking deflection and the like which may occur in the substrate stacking process of the component;
(2) according to the structural characteristics and the material characteristics of the component and the interaction mechanism among the process parameters of the arc additive, such as the welding speed, the feeding speed and the protective gas flow, the component is sliced and subjected to path planning through software, and the main process parameters in the arc additive manufacturing process in the embodiment include: the welding speed is 0.6m/min, the wire feeding speed is 6m/min, the distance from the bottom of a welding gun to a substrate is 15mm, the distance from a welding wire to the substrate is 2mm, the height of a slicing layer is 2.25mm, a local inert gas protection device is adopted in the electric arc material increase process, high-purity argon flows out through a welding gun fairing, and the gas flow is 25L/min.
(3) Polishing the surface of the substrate, removing an oxide layer, cleaning the surface of the substrate by using an acetone reagent, and fixing the substrate on a workbench by using a clamp, wherein the clamp is uniformly distributed at the edge position of the substrate in order to prevent the substrate from seriously warping in the additive manufacturing process;
(4) the relative positions and angles of the welding gun and the ultrasonic impact gun to the substrate are adjusted, so that the welding gun and the ultrasonic impact gun can run at a specified track without interference, and can perform material increase and impact at a vertical angle relative to the substrate, and the welding gun and the ultrasonic impact gun can perform material increase and impact even if inclined at a certain angle relative to the substrate, and the angles and directions of the welding gun and the ultrasonic impact gun relative to the substrate are required to be kept consistent.
(5) Opening an air extractor in advance to prevent harmful gas and aluminum powder in the electric arc additive process from influencing the production environment, controlling the matching motion of a welding gun and a wire feeder through a preset track, and forming an electric arc additive deposition layer on the surface of a substrate;
(6) when carrying out one or multilayer deposit, the cooperation motion of control impact robot and impact rifle strikes the sedimentary deposit assigned position, and the main technological parameter of supersound impact is in this embodiment: the ultrasonic impact frequency is 20kHZ, the maximum amplitude is 25 mu m, and the processing speed is 0.5 m/min;
(7) and (3) after the impact is finished, controlling the electric arc additive manufacturing robot to stop for 1-2 min, starting a water cooling system under the substrate, measuring the surface temperature of the deposition layer through an infrared temperature sensor, starting the electric arc additive manufacturing robot when the surface temperature of the deposition layer reaches a preset forming temperature, continuing electric arc additive manufacturing to the initial position of a second layer or a specified layer, repeating the steps (6) and (7), and forming a preset component shape with good performance in a layer-by-layer accumulation mode through electric arc additive manufacturing and impact strengthening composite manufacturing.
Claims (10)
1. The utility model provides an automatic change electric arc vibration material disk and shock-strengthening composite manufacturing device, its characterized in that, includes first automatic guide car (3), second automatic guide car (21) and workstation, workstation one side be equipped with first automatic guide car (3), the opposite side is equipped with second automatic guide car (21), first automatic guide car (3) on install electric arc vibration material disk module, second automatic guide car (21) on install the shock-strengthening module, first, second automatic guide car all be connected with control system.
2. The automated arc additive and impact strengthening composite manufacturing device according to claim 1, wherein the arc additive module comprises an arc additive robot (7), the arc additive robot (7) is installed on the first automatic guided vehicle (3), a welding gun (13) is connected to the tail end of the arc additive robot (7), and an arc additive controller (9) and an infrared temperature sensor (14) are connected to the welding gun (13).
3. The automatic arc additive and impact strengthening composite manufacturing device according to claim 2, wherein the welding gun (13) is connected with the shielding gas storage tank (1) and the wire feeder (4), and the output end of the wire feeder (4) is provided with a wire feeder straightening mechanism (5).
4. The automated arc additive and impact-strengthening composite manufacturing device according to claim 2, wherein the arc additive controller (9) is connected with the welding gun (13) through an optical fiber (11).
5. The automated arc additive and impact strengthening composite manufacturing device according to claim 2, wherein the infrared temperature sensor (14) is connected to a welding gun (13) at the end of the arc additive through a linkage mechanism.
6. The automated arc additive and impact-strengthening composite manufacturing device according to claim 1, wherein the impact-strengthening module comprises an impact-strengthening robot (20), the impact-strengthening robot (20) is mounted on a second automatic guided vehicle (21), an ultrasonic impact gun (17) is connected to the end of the impact-strengthening robot (20), and an ultrasonic impact gun controller (18) is connected to the ultrasonic impact gun (17).
7. The automated arc additive and impact strengthening composite manufacturing device according to claim 6, wherein the ultrasonic impact gun (17) comprises an ultrasonic transducer (17-1) and an ultrasonic horn (17-2), the ultrasonic horn (17-2) is arranged below the ultrasonic transducer (17-1), a clamping handle (17-3) is arranged at the bottom of the ultrasonic horn (17-2), and an impact tool head (17-4) is clamped at the bottom of the clamping handle.
8. The automatic electric arc additive and impact strengthening composite manufacturing device according to claim 1, wherein the workbench comprises a double-shaft rotary table workbench (19-1), the double-shaft rotary table workbench (19-1) is located below the ultrasonic impact gun and the welding gun, clamps (8) are mounted on two sides of the double-shaft rotary table workbench, the clamps (8) on the two sides clamp the substrate (12) together, and a circulating water cooling system (22) is arranged at the bottom of the double-shaft rotary table workbench.
9. The automated arc additive and impact-strengthening composite manufacturing apparatus according to claim 1 or 8, wherein an air extractor (15) is fixed above the worktable, and the air extractor (15) is connected with an air extractor controller (16).
10. The automated arc additive and impact-reinforcement composite manufacturing method according to any one of claims 1 to 9, comprising the steps of:
s1, structural design and processability optimization of the component: optimizing according to problems of the member in the substrate stacking process by drawing the member with the aid of a computer;
s2, slicing and path planning are carried out on the component through software according to the structural characteristics of the component, the material characteristics and the interaction mechanism among the electric arc additive process parameters;
s3, polishing the surface of the substrate, cleaning the surface of the substrate, and fixing the substrate on a workbench by using a clamp;
s4, forming an electric arc additive deposition layer on the surface of the base material by controlling the matching movement of the welding gun and the wire feeder;
s5, controlling the cooperation motion of the impact robot and the impact gun when one or more layers of deposition are carried out, and impacting the designated position of the deposition layer;
and S6, controlling the arc additive robot to the initial position of the second layer or the appointed layer after the impact is finished, measuring the surface temperature of the deposition layer through a temperature sensor, starting the arc additive robot when the surface temperature of the deposition layer reaches the preset forming temperature, repeating the steps S5 and S6, and compositely manufacturing the shape of the formed workpiece through layer-by-layer accumulation and impact reinforcement.
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| CN202111135459.9A CN113732704A (en) | 2021-09-27 | 2021-09-27 | Automatic electric arc additive and impact strengthening composite manufacturing device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193172A (en) * | 2022-01-07 | 2022-03-18 | 南京航空航天大学 | Cooperative control method of electric arc additive and impact reinforcement composite manufacturing device |
| CN114589381A (en) * | 2022-03-29 | 2022-06-07 | 江苏大学 | Interlayer ultrasonic impact assisted high-performance CMT arc additive manufacturing method and device |
-
2021
- 2021-09-27 CN CN202111135459.9A patent/CN113732704A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114193172A (en) * | 2022-01-07 | 2022-03-18 | 南京航空航天大学 | Cooperative control method of electric arc additive and impact reinforcement composite manufacturing device |
| CN114589381A (en) * | 2022-03-29 | 2022-06-07 | 江苏大学 | Interlayer ultrasonic impact assisted high-performance CMT arc additive manufacturing method and device |
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Application publication date: 20211203 |