Equipment and preparation method for CMT double-wire arc ultrasonic-assisted additive manufacturing of titanium-based composite material

Abstract

The invention relates to the technical field of metal material electric arc additive manufacturing, and discloses equipment for CMT double-wire electric arc ultrasonic assisted additive manufacturing of a titanium-based composite material and a preparation method.The equipment for CMT double-wire electric arc ultrasonic assisted additive manufacturing of the titanium-based composite material and the preparation method.The equipment comprises a machine body, and a multi-axis mechanical arm is arranged on the outer side of the machine body; and a controller is fixedly installed at the top end of the machine body, a preparation assembly is arranged on the outer side of the controller, and the preparation assembly comprises a center hydraulic cylinder. According to the equipment and the preparation method for CMT double-wire electric arc ultrasonic-assisted additive manufacturing of the titanium-based composite material, in order to improve the production efficiency and quickly change additive components, by arranging a preparation assembly and adopting a titanium alloy welding wire as a raw material, through independent multi-wire-feeding design, an operator can carry out program calculation, and the production efficiency of the titanium-based composite material is improved. And then the wire feeding speed is controlled and independent wire feeding is carried out, so that the additive components can be quickly changed, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of arc additive manufacturing of metal materials, and in particular to a device and a preparation method for CMT twin-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials. Background Art

[0002] Titanium and titanium alloys have been widely used in many high-end fields such as aerospace, biomedicine, and marine engineering due to their advantages such as high specific strength, good corrosion resistance, and high temperature resistance. However, with the continuous improvement of modern industry's requirements for material performance, single titanium and titanium alloys can no longer meet the use requirements under some extreme working conditions. Titanium-based composite materials have come into being. By adding reinforcing phases (such as ceramic particles, carbon fibers, etc.) to the titanium matrix, the hardness, wear resistance, high-temperature strength and other properties of the material can be significantly improved, further expanding the application range of titanium-based materials.

[0003] In recent years, additive manufacturing technology, as an emerging manufacturing technology, has the unique advantage of layer-by-layer deposition and can achieve near-net forming of complex structural parts without a large amount of subsequent processing, effectively improving material utilization and production efficiency. In the manufacturing field of titanium-based composite materials, additive manufacturing technology has also shown great potential.

[0004] However, the current equipment for manufacturing titanium-based composite materials cannot quickly and effectively change the additive composition to improve production efficiency, and cannot effectively achieve the refinement of the solidified grain structure, shield the liquid molten pool and cool the molten pool, and grind and remove the oxide layer between the layers of the titanium-based composite body during welding. In view of this, we propose a CMT double-wire arc ultrasonic-assisted additive manufacturing device and preparation method for titanium-based composite materials. Summary of the invention

[0005] The object of the present invention is to provide a device and a preparation method for CMT twin-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A CMT double-wire arc ultrasonic assisted additive manufacturing device for titanium-based composite materials, comprising a body, a multi-axis mechanical arm is arranged outside the body, a controller is fixedly installed on the top of the body, a preparation component is arranged outside the controller, and the preparation component comprises:

[0008] A central hydraulic cylinder is fixedly installed inside the machine body, a piston end at the top of the central hydraulic cylinder is fixedly connected to the center of the bottom of the workbench, a titanium alloy substrate is placed on the top of the workbench, a clamp is arranged on the outside of the titanium alloy substrate, and a titanium-based composite material body is arranged on the top of the titanium alloy substrate;

[0009] A CMT power supply, wherein the CMT power supply is fixedly installed at one end of the multi-axis robot arm close to the workbench, and a main welding gun is arranged on the CMT power supply;

[0010] A first linear module, the top of the machine body is fixedly mounted with the first linear module, the top of the internal movable part of the first linear module is fixedly connected to the bottom center of the second linear module, the top of the internal sliding part of the second linear module is fixedly mounted with an inclined frame, the inner side of the top of the inclined frame is fixedly mounted with a hydraulic rod, one end of a moving block is fixedly mounted on the outer side of the piston end of the hydraulic rod, the inclined side wall of the inclined frame is provided with a slide groove, the moving block slides in contact with the inner side of the slide groove, the other end of the moving block is fixedly mounted with a slide rail, the outer side of the inclined side wall of the inclined frame is fixedly mounted with a slide rail, and the slide rail is slidably mounted on the slide rail;

[0011] An asynchronous motor is fixedly mounted on the outer side of the slider, the outer side of the asynchronous motor output shaft is fixedly connected to the central outer wall of the disc, a wire feeding mechanism is fixedly mounted on the outer side of the disc, a welding wire body is arranged on the wire feeding mechanism, and the end of the wire feeding mechanism is arranged opposite to the main welding gun.

[0012] Preferably, the clamp includes a clamp block, the top of the titanium alloy substrate fits into the lower surface of the top of the clamp block, the clamp block is sleeved on the inner side of the workbench, and a nut is threadedly installed on the outer side of the bottom end of the clamp block. The clamp is provided in multiple groups, so that the titanium alloy substrate can be fixed more stably.

[0013] Preferably, the main welding gun uses CMT arc as a heat source to perform arc additive manufacturing.

[0014] Preferably, the wire feeding mechanism and the welding wire body are provided in multiple groups, and the multiple groups of wire feeding mechanisms and the welding wire body are arranged in a circular array with equal spacing with the center of the circular cross-section of the disk as the array center, and the multiple groups of wire feeding mechanisms are electrically connected to the controller through cables, and the multiple groups of cables are spirally bundled, and the built-in program of the wire feeding mechanism is set through the controller to adjust the uniform conveying speed of the welding wire body on a single wire feeding mechanism.

[0015] Preferably, an impact assembly is provided on the machine body, and the impact assembly includes a fixing plate, a fixing plate is clamped on the outer side of the CMT power supply, an ultrasonic amplitude transformer is clamped on the inner side of the fixing plate, an ultrasonic generator is fixedly installed on the top of the machine body, and the ultrasonic amplitude transformer is electrically connected to the ultrasonic generator through a cable.

[0016] Preferably, a shielding assembly is provided on the machine body, and the shielding assembly includes an argon gas cylinder, and the argon gas cylinder stores an argon inert mixed gas. A gas hood is clamped on the inner side of one end of the fixed plate away from the welding wire body, and the top of the gas hood is fixedly connected to one end of the air pipe. The air pipe is provided with two groups, and the air pipe is a hose. The other end of the air pipe is fixedly installed on the upper argon gas cylinder. The argon gas cylinder is provided with a valve and an air pump, and the bottom of the gas hood is provided with an air outlet groove.

[0017] Preferably, a grinding assembly is provided at the top of the machine body, and the grinding assembly includes a third linear module, the third linear module is fixedly installed on the top of the machine body, the top of the internal sliding part of the third linear module is fixedly connected to the bottom center of the fourth linear module, a moving frame is fixedly installed on the top of the fourth linear module, a top hydraulic cylinder is fixedly installed on the front side of the top of the moving frame, an angle grinder is fixedly installed on the piston end of the bottom end of the top hydraulic cylinder, and a grinding head is fixedly installed on the output end of the angle grinder.

[0018] Preferably, a dust pump is fixedly installed on the rear side of the top of the movable frame, the air inlet end of the dust pump is fixedly connected to a dust pipe, the dust pipe is located directly behind the grinding head, and a dust nozzle is fixedly installed on the front end of the dust pipe.

[0019] Preferably, the air outlet end of the vacuum pump is connected to the collection device through a hose, and a plurality of vacuum nozzles are provided, and the plurality of vacuum nozzles are arranged in a linear array with equal spacing in the vertical direction, thereby achieving a better vacuuming effect.

[0020] A method for preparing a device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials, comprising the following steps:

[0021] S1, start the central hydraulic cylinder to move the workbench and the titanium alloy substrate upward to the target position, and tighten the nut so that the clamping block fits the titanium alloy substrate to make it more stably fixed;

[0022] S2, moving the CMT power source and the main welding gun to the top of the titanium alloy substrate through the multi-axis robot arm;

[0023] S3, cooperate with the first linear module and the second linear module to move the inclined frame, start the hydraulic rod, move the moving block in the slide slot, move the slider synchronously on the slide rail, start the asynchronous motor, rotate the disc, so that multiple groups of wire feeding mechanisms and welding wire bodies selectively move to the outside of the main welding gun, and the welding wire body contacts the main welding gun at a uniform speed to manufacture the titanium-based composite material body, that is, the additive composition can be quickly changed;

[0024] S4, while cooperating with an ultrasonic generator to generate ultrasonic waves, the ultrasonic horn applies the ultrasonic waves to the liquid molten pool in a non-contact manner, thereby achieving impact and stirring effects on the molten pool, and further achieving refinement of the solidified grain structure;

[0025] S5. At the same time, according to the program settings, with the argon gas bottle, gas hood, gas pipe and gas outlet slot, argon protective gas is sprayed at the welding point at a uniform speed and the high-temperature welding part is quickly cooled down;

[0026] S6. In combination with the third linear module, the fourth linear module, the mobile frame, the top hydraulic cylinder, the angle grinder, the grinding head, the vacuum pump, the vacuum tube and the vacuum nozzle, the oxide layer can be polished and removed between the layers of the titanium-based composite material body during the welding process.

[0027] Compared with the prior art, the present invention provides a device and a preparation method for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials, which has the following beneficial effects:

[0028] 1. The CMT double-wire arc ultrasonic-assisted additive manufacturing equipment and preparation method for titanium-based composite materials, in order to improve production efficiency and quickly change the additive composition, is provided with a preparation component, uses titanium alloy welding wire as raw material, and uses an independent multi-wire feeding design so that the operator can calculate through the program, and then control the wire feeding speed and perform independent wire feeding, so as to quickly change the additive composition and improve production efficiency.

[0029] 2. The CMT double-wire arc ultrasonic-assisted additive manufacturing equipment and preparation method for titanium-based composite materials, in order to achieve the refinement of the solidified grain structure, sets an impact component and cooperates with the ultrasonic generator to generate ultrasonic waves. The ultrasonic amplitude transformer applies the ultrasonic waves to the liquid molten pool in a non-contact manner, thereby achieving the impact and stirring effect on the molten pool, and further achieving the refinement of the solidified grain structure.

[0030] 3. The CMT double-wire arc ultrasonic-assisted additive manufacturing equipment and preparation method for titanium-based composite materials, in order to shield the liquid molten pool and cool the molten pool, is equipped with a shielding component. According to the program setting, in conjunction with the argon gas bottle, gas hood, gas pipe and gas outlet groove, argon protective gas is sprayed at the welding point at a uniform speed and the high-temperature welding part is quickly cooled down.

[0031] 4. The CMT double-wire arc ultrasonic-assisted additive manufacturing equipment and preparation method for titanium-based composite materials, in order to be able to grind and remove the oxide layer between the main layers of the titanium-based composite material during welding, is provided with a grinding component. When the third linear module is started, the fourth linear module can be moved, and when the fourth linear module is started, the movable frame moves. When the top hydraulic cylinder is started, the angle grinder can move up and down. When the angle grinder is started, the grinding head rotates, and the oxide layer between the main layers of the titanium-based composite material during welding can be grinded and removed. When the dust pump is started, the dust pipe and the dust nozzle can be used to remove the polished impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic top view of the overall structure of the present invention;

[0033] Figure 2 It is a schematic top view of the overall structure of the present invention from another viewing angle;

[0034] Figure 3 It is a bottom view schematic diagram of a part of the structure of the present invention;

[0035] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of the middle A area;

[0036] Figure 5 It is a schematic cross-sectional view of part of the structure of the present invention;

[0037] Figure 6 It is a top view schematic diagram of the workbench of the present invention;

[0038] Figure 7 This is a bottom view schematic diagram of the inclined frame of the present invention;

[0039] Figure 8 It is a bottom-view cross-sectional schematic diagram of the oblique frame of the present invention;

[0040] Fig. 9 It is a schematic cross-sectional view of the top hydraulic cylinder of the present invention;

[0041] Fig.10 The figure is a flow chart of the method of the present invention.

[0042] In the figure: 1, machine body; 2, multi-axis robot arm; 21, controller; 3, preparation component; 31, central hydraulic cylinder; 32, workbench; 33, titanium alloy substrate; 34, titanium-based composite body; 35, clamping block; 36, nut; 37, CMT power supply; 38, main welding gun; 39, first linear module; 310, second linear module; 311, inclined frame; 312, hydraulic rod; 313, moving block; 314, slideway; 315, slider; 316, slide rail; 317, asynchronous motor; 318. Disc; 319. Wire feeding mechanism; 320. Welding wire body; 4. Impact assembly; 41. Fixing plate; 42. Ultrasonic amplitude transformer; 43. Ultrasonic generator; 5. Shielding assembly; 51. Argon gas bottle; 52. Gas hood; 53. Gas pipe; 54. Gas outlet slot; 6. Grinding assembly; 61. Third linear module; 62. Fourth linear module; 63. Moving frame; 64. Top hydraulic cylinder; 65. Angle grinder; 66. Grinding head; 67. Dust pump; 68. Dust pipe; 69. Dust nozzle. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] See also Figure 1 - Fig.10 , the present invention provides a technical solution:

[0045] A device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials comprises a body 1, a multi-axis mechanical arm 2 is arranged outside the body 1, and a controller 21 is fixedly installed on the top of the body 1.

[0046] In one embodiment of the present invention, a preparation component 3 is arranged on the outside of the controller 21, and the preparation component 3 includes a central hydraulic cylinder 31. The central hydraulic cylinder 31 is fixedly installed inside the machine body 1, and the top piston end of the central hydraulic cylinder 31 is fixedly connected to the bottom center of the workbench 32. A titanium alloy substrate 33 is placed on the top of the workbench 32, and a clamp (the base is TA2 titanium alloy) is arranged on the outside of the titanium alloy substrate 33. In addition, the clamp includes a clamp block 35, and the top of the titanium alloy substrate 33 is attached to the lower surface of the top of the clamp block 35. The clamp block 35 is sleeved on the inner side of the workbench 32, and a nut 36 is threadedly installed on the outer side of the bottom end of the clamp block 35. The clamp is provided with two groups, so that the titanium alloy substrate 33 The machine body 1 is fixed more stably, a titanium-based composite material body 34 is arranged on the top of the titanium alloy substrate 33, a CMT power supply 37 is fixedly installed on one end of the multi-axis robot arm 2 close to the workbench 32, a main welding gun 38 is arranged on the CMT power supply 37, and the main welding gun 38 uses the CMT arc as a heat source for arc additive manufacturing, a first linear module 39 is fixedly installed on the top of the machine body 1, the top of the internal movable part of the first linear module 39 is fixedly connected to the bottom center of the second linear module 310, an inclined frame 311 is fixedly installed on the top of the internal sliding part of the second linear module 310, a hydraulic rod 312 is fixedly installed on the inner side of the top of the inclined frame 311, and the outer piston end of the hydraulic rod 312 is fixedly connected to the outer piston end of the hydraulic rod 312. A moving block 313 is fixedly installed on one end of the side, a sliding groove 314 is opened on the inclined side wall of the inclined frame 311, and the moving block 313 slides and fits inside the sliding groove 314, and a slider 315 is fixedly installed on the other end of the moving block 313. A sliding rail 316 is fixedly installed on the outer side of the inclined side wall of the inclined frame 311, and the slider 315 is slidably installed on the sliding rail 316. An asynchronous motor 317 is fixedly installed on the outer side of the slider 315, and the outer side of the output shaft of the asynchronous motor 317 is fixedly connected to the central outer wall of the disc 318. A wire feeding mechanism 319 is fixedly installed on the outer side of the disc 318, and a welding wire body 320 (titanium alloy welding wire) is arranged on the wire feeding mechanism 319. The main welding gun 38 is set correctly (the combination components of the titanium-based composite material body 34 can change the overall composition by changing the material composition of a single welding wire body 320). In addition, there are five groups of wire feeding mechanisms 319 and welding wire bodies 320, and the five groups of wire feeding mechanisms 319 and welding wire bodies 320 are all arranged in a circular array with equal spacing around the center of the circular cross-section of the disk 318 as the array center, and the five groups of wire feeding mechanisms 319 are electrically connected to the controller 21 through cables, and the five groups of cables are spirally bundled, and the built-in program of the wire feeding mechanism 319 is set through the controller 21 to adjust the uniform conveying speed of the welding wire body 320 on a single wire feeding mechanism 319.

[0047] In one embodiment of the present invention, an impact assembly 4 is provided on the body 1, and the impact assembly 4 includes a fixing plate 41, the fixing plate 41 is clamped on the outer side of the CMT power supply 37, and an ultrasonic horn 42 is clamped on the inner side of the fixing plate 41. An ultrasonic generator 43 is fixedly installed on the top of the body 1, and the ultrasonic horn 42 is electrically connected to the ultrasonic generator 43 through a cable.

[0048] In one embodiment of the present invention, a shielding assembly 5 is provided on the body 1, and the shielding assembly 5 includes an argon gas cylinder 51, and the argon gas cylinder 51 stores an argon inert mixed gas. A gas hood 52 is clamped on the inner side of one end of the fixed plate 41 away from the welding wire body 320, and the top of the gas hood 52 is fixedly connected to one end of an air pipe 53. The air pipe 53 is provided with two groups, and the air pipe 53 is a hose. The other end of the air pipe 53 is fixedly installed on the upper argon gas cylinder 51. The argon gas cylinder 51 is provided with a valve and an air pump, and the bottom of the gas hood 52 is provided with a gas outlet groove 54.

[0049] In one embodiment of the present invention, a grinding assembly 6 is provided at the top of the body 1, and the grinding assembly 6 includes a third linear module 61. The third linear module 61 is fixedly installed on the top of the body 1, and the top of the internal sliding member of the third linear module 61 is fixedly connected to the bottom center of the fourth linear module 62. A moving frame 63 is fixedly installed on the top front side of the top of the moving frame 63, and an angle grinder 65 is fixedly installed on the piston end of the bottom end of the top hydraulic cylinder 64. A grinding head 66 is fixedly installed on the output end of the angle grinder 65. In addition, a dust suction pump 67 is fixedly installed on the rear side of the top of the moving frame 63, and the air inlet end of the dust suction pump 67 is fixedly connected to a dust suction pipe 68, and the dust suction pipe 68 is located directly behind the grinding head 66. A dust suction nozzle 69 is fixedly installed on the front end of the dust suction pipe 68. In addition, the air outlet end of the dust suction pump 67 is connected to the collection device through a hose. Four groups of dust suction nozzles 69 are provided, and the four groups of dust suction nozzles 69 are arranged in a linear array with equal spacing in the vertical direction, so that the dust suction effect is better.

[0050] Among them, the electrical components appearing in this application document are all electrically connected to the controller 21 and the 220V AC power supply, and the controller 21 is a conventional known device that can control the multi-axis robot 2, the central hydraulic cylinder 31, the CMT power supply 37, the main welding gun 38, the first linear module 39, the second linear module 310, the hydraulic rod 312, the asynchronous motor 317, the wire feeding mechanism 319, the ultrasonic amplitude transformer 42, the ultrasonic generator 43, the argon gas cylinder 51, the third linear module 61, the fourth linear module 62, the top hydraulic cylinder 64, the angle grinder 65 and the dust suction pump 67. The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part are connected by conventional means such as mature rivets and welding in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0051] A method for preparing a device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials, comprising the following steps:

[0052] S1, when the central hydraulic cylinder 31 is started, the workbench 32 and the titanium alloy substrate 33 are moved upward to the target position, and by tightening the nut 36, the clamping block 35 is attached to the titanium alloy substrate 33, so that it is fixed more stably;

[0053] S2, using the controller 21 to enable the multi-axis robot arm 2 to move the CMT power supply 37 and the main welding gun 38 to above the titanium alloy substrate 33;

[0054] S3, start the first linear module 39, so that the second linear module 310 moves, thereby moving the inclined frame 311, when the hydraulic rod 312 is started, the moving block 313 moves in the slide groove 314, and the slider 315 moves synchronously on the slide rail 316, when the asynchronous motor 317 is started, the disc 318 rotates, so that multiple groups of wire feeding mechanisms 319 and welding wire bodies 320 selectively move to the outside of the main welding gun 38, so that the target welding wire body 320 can contact the main welding gun 38 at a uniform speed to manufacture the titanium-based composite material body 34, and cooperate with the gradual downward movement of the workbench 32 to quickly change the additive composition;

[0055] S4, while cooperating with the ultrasonic generator 43 to generate ultrasonic waves, the ultrasonic horn 42 applies the ultrasonic waves to the tail of the liquid molten pool (a liquid molten pool will be formed at the welding point) in a non-contact manner, thereby achieving impact and stirring effects on the molten pool, and further achieving refinement of the solidified grain structure;

[0056] S5. At the same time, according to the program setting, the argon gas bottle 51 is started, and the argon protective gas can be uniformly sprayed toward the welding position through the gas cover 52, the gas pipe 53 and the gas outlet slot 54, and the high-temperature welding part is quickly cooled down (acting on the front part of the molten pool, shielding the liquid molten pool and cooling the molten pool);

[0057] S6. When the third linear module 61 is started, the fourth linear module 62 can move. When the fourth linear module 62 is started, the movable frame 63 moves. When the top hydraulic cylinder 64 is started, the angle grinder 65 can move up and down. When the angle grinder 65 is started, the grinding head 66 rotates, which can grind and remove the oxide layer between the layers of the titanium-based composite material body 34 during the welding process. When the dust pump 67 is started, the dust pipe 68 and the dust nozzle 69 can be used to remove the polished impurities.

[0058] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A CMT double-wire arc ultrasonic assisted additive manufacturing device for titanium-based composite materials, comprising a body (1), a multi-axis robotic arm (2) is arranged outside the body (1), and a controller (21) is fixedly installed on the top of the body (1), characterized in that: A preparation component (3) is arranged outside the controller (21), and the preparation component (3) comprises: A central hydraulic cylinder (31), wherein the central hydraulic cylinder (31) is fixedly installed inside the machine body (1), the top piston end of the central hydraulic cylinder (31) is fixedly connected to the bottom center of a workbench (32), a titanium alloy substrate (33) is placed on the top of the workbench (32), a clamp is arranged on the outside of the titanium alloy substrate (33), and a titanium-based composite material body (34) is arranged on the top of the titanium alloy substrate (33); A CMT power supply (37), wherein the CMT power supply (37) is fixedly mounted on one end of the multi-axis robot arm (2) close to the workbench (32), and a main welding gun (38) is arranged on the CMT power supply (37); A first linear module (39), the first linear module (39) is fixedly installed on the top of the machine body (1), the top of the internal movable part of the first linear module (39) is fixedly connected to the bottom center of the second linear module (310), the top of the internal sliding part of the second linear module (310) is fixedly installed with an inclined frame (311), the inner side of the top of the inclined frame (311) is fixedly installed with a hydraulic rod (312), one end of a moving block (313) is fixedly installed on the outer side of the piston end of the hydraulic rod (312), the inclined side wall of the inclined frame (311) is provided with a sliding groove (314), the moving block (313) is slidably fitted on the inner side of the sliding groove (314), the other end of the moving block (313) is fixedly installed with a sliding block (315), the outer side of the inclined side wall of the inclined frame (311) is fixedly installed with a sliding rail (316), and the sliding block (315) is slidably installed on the sliding rail (316); An asynchronous motor (317), the asynchronous motor (317) is fixedly mounted on the outer side of the slider (315), the outer side of the output shaft of the asynchronous motor (317) is fixedly connected to the central outer wall of the disc (318), the outer side of the disc (318) is fixedly mounted with a wire feeding mechanism (319), a welding wire body (320) is arranged on the wire feeding mechanism (319), and the end of the wire feeding mechanism (319) is arranged facing the main welding gun (38).

2. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 1, characterized in that: The clamp comprises a clamp block (35), the top end of the titanium alloy substrate (33) is in contact with the lower surface of the top end of the clamp block (35), the clamp block (35) is sleeved on the inner side of the workbench (32), a nut (36) is threadedly mounted on the outer side of the bottom end of the clamp block (35), and the clamp is provided in multiple groups.

3. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 2, characterized in that: The main welding gun (38) uses a CMT arc as a heat source to perform arc additive manufacturing.

4. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 3, characterized in that: The wire feeding mechanism (319) and the welding wire body (320) are provided in multiple groups, and the multiple groups of the wire feeding mechanism (319) and the welding wire body (320) are arranged in a circular array with equal spacing, with the center of the circular cross section of the disk (318) as the array center, and the multiple groups of the wire feeding mechanism (319) are electrically connected to the controller (21) through cables, and the multiple groups of cables are bundled in a spiral shape. The built-in program of the wire feeding mechanism (319) is set through the controller (21) to adjust the uniform speed of the welding wire body (320) on a single wire feeding mechanism (319).

5. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 4, characterized in that: The machine body (1) is provided with an impact assembly (4), the impact assembly (4) comprises a fixing plate (41), the fixing plate (41) is clamped on the outside of the CMT power supply (37), an ultrasonic horn (42) is clamped on the inside of the fixing plate (41), an ultrasonic generator (43) is fixedly mounted on the top of the machine body (1), and the ultrasonic horn (42) is electrically connected to the ultrasonic generator (43) via a cable.

6. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 5, characterized in that: The machine body (1) is provided with a shielding assembly (5), the shielding assembly (5) comprising an argon gas bottle (51), the argon gas bottle (51) storing an argon inert mixed gas therein, a gas hood (52) being clamped on the inner side of one end of the fixing plate (41) away from the welding wire body (320), the top end of the gas hood (52) being fixedly connected to one end of an air pipe (53), the air pipe (53) being a hose, the other end of the air pipe (53) being fixedly mounted on the upper argon gas bottle (51), the argon gas bottle (51) being provided with a valve and an air pump, and the bottom end of the gas hood (52) being provided with an air outlet groove (54).

7. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 6, characterized in that: A grinding assembly (6) is arranged at the top of the machine body (1), and the grinding assembly (6) comprises a third linear module (61). The third linear module (61) is fixedly mounted on the top of the machine body (1), and the top of the internal sliding member of the third linear module (61) is fixedly connected to the bottom center of the fourth linear module (62). A moving frame (63) is fixedly mounted on the top of the fourth linear module (62), and a top hydraulic cylinder (64) is fixedly mounted on the front side of the top of the moving frame (63). An angular grinder (65) is fixedly mounted on the piston end of the bottom end of the top hydraulic cylinder (64), and a grinding head (66) is fixedly mounted on the output end of the angle grinder (65).

8. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 7, characterized in that: A dust suction pump (67) is fixedly installed on the rear side of the top end of the movable frame (63); the air inlet end of the dust suction pump (67) is fixedly connected to a dust suction pipe (68); the dust suction pipe (68) is located directly behind the grinding head (66); and a dust suction nozzle (69) is fixedly installed at the front end of the dust suction pipe (68).

9. The device for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 8, characterized in that: The air outlet of the dust suction pump (67) is connected to the collection device via a hose, and a plurality of groups of dust suction nozzles (69) are provided, and the plurality of groups of dust suction nozzles (69) are arranged in a linear array with equal spacing in the vertical direction.

10. A method for preparing the equipment for CMT double-wire arc ultrasonic assisted additive manufacturing of titanium-based composite materials according to claim 9, characterized in that: The following steps are involved: S1, start the central hydraulic cylinder (31), move the workbench (32) and the titanium alloy substrate (33) to the target position, and cooperate with the clamping block (35) and the nut (36) to fix the titanium alloy substrate (33) more stably; S2, moving the CMT power source (37) and the main welding gun (38) to above the titanium alloy substrate (33) by means of the multi-axis robot arm (2); S3, cooperate with the first linear module (39) and the second linear module (310) to move the inclined frame (311), cooperate with the hydraulic rod (312), the moving block (313), the slide groove (314), the slider (315), the slide rail (316), the asynchronous motor (317) and the disc (318), so that multiple groups of wire feeding mechanisms (319) and welding wire bodies (320) are selectively moved to the outside of the main welding gun (38), and the welding wire body (320) contacts the main welding gun (38) at a uniform speed to manufacture the titanium-based composite material body (34), that is, the additive composition can be quickly changed; S4, simultaneously cooperating with the ultrasonic generator (43) to generate ultrasonic waves, and the ultrasonic horn (42) applies the ultrasonic waves to the liquid molten pool in a non-contact manner, thereby achieving impact and stirring effects on the molten pool, and further achieving refinement of the solidified grain structure; S5. According to the program setting, the argon gas bottle (51), the gas cover (52), the gas pipe (53) and the gas outlet groove (54) are coordinated to spray the argon protective gas at a uniform speed toward the welding part and quickly cool down the high-temperature welding part; S6. In combination with the grinding component (6), the oxide layer can be removed by grinding between the layers of the titanium-based composite material body (34) during the welding process.

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