A grinding synchronous composite GTAW arc additive manufacturing device and use method

Abstract

The present invention proposes a grinding synchronous composite GTAW arc additive manufacturing device and a method of use, which belongs to the field of additive manufacturing technology, including a GTAW welding gun, a welding gun mounting frame, a wire feeder, a wire feeder mounting frame, a manual cross screw slide, a welding workbench, an arc additive manufacturing layer, a horizontal servo stepper motor ball screw linear guide slide, a grinding device, a slider fixture, a vertical manual ball screw linear guide slide, a frame, a substrate, a welding machine, a wire feeder, a grinding power supply, and a single-axis motion controller. The invention solves the problem that in the original GTAW wire arc additive manufacturing technology, after the wire is melted and deposited, the surface of the deposited layer is rough and uneven, and it cannot be guaranteed that the next deposited layer is deposited on a flat surface, thereby affecting the inconsistency of the height of the deposited parts. At the same time, after the component is ground, its surface usually has a certain thickness of plastic deformation layer (original grain refinement), and the inter-layer crystallization between the layers is broken.

Description

Technical Field

[0001] The present invention belongs to the technical field of additive manufacturing, and in particular relates to a grinding synchronous composite GTAW arc additive manufacturing device and a use method thereof. Background Art

[0002] Wire and Arc Additive Manufacturing (WAAM) uses an arc as an instantaneous point heat source to melt the metal wire and deposit it layer by layer on the planned path to form a three-dimensional solid metal component. This technology has the advantages of high forming efficiency (forming speed can reach up to 80kg / h), good material stability, high material utilization, large size of formed workpieces, and low equipment manufacturing cost. It can be applied to the additive manufacturing of various metal materials. Gas Tungsten Arc Welding (GTAW) is a welding method that uses tungsten or tungsten alloy materials as electrodes and is performed under inert gas protection. GTAW is a very commonly used welding method with the advantages of precise control of welding heat input, low equipment cost, and simple operation. When the wire is melted and deposited, the parts manufactured using wire arc additive manufacturing technology have a rough and uneven surface on the deposited layer, and it cannot be guaranteed that the next deposited layer is deposited on a flat surface, which in turn affects the inconsistency of the height of the deposited parts and the problems of grain co-crystallization.

[0003] Grinding is a traditional processing technology. Compared with other traditional material removal processes, grinding can obtain better surface quality and integrity. Grinding belongs to fine processing, and the processing amount is very small, so it can ensure that the additive manufacturing components reach a near-net shape. Now many relevant scholars use grinding as a solution for post-processing of additive manufacturing. At the same time, after the component is ground, there will usually be a certain thickness of plastic deformation layer (original grain refinement) on its surface, and the surface performance is also improved. In view of the problems of uneven surface of existing arc additive deposition layers and coarse grains caused by joint crystallization, the present invention combines the grinding characteristics to propose a new device and method for grinding layer-by-layer composite arc additive manufacturing. Summary of the invention

[0004] In order to solve the problems in the prior art, the present invention provides a grinding synchronous composite GTAW arc additive manufacturing device and a use method.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a grinding synchronous composite GTAW arc additive manufacturing device, which includes a GTAW welding gun, a welding gun mounting frame, a wire feeding nozzle, a wire feeding nozzle mounting frame, a manual cross screw slide, a welding workbench, an arc additive manufacturing layer, a horizontal servo stepper motor ball screw linear guide slide, a grinding device, a slider clamp, a vertical manual ball screw linear guide slide, a frame, a substrate, a welding machine, a wire feeder, a grinding power supply, and a single-axis motion controller. The GTAW welding gun is fixedly connected to the welding gun mounting frame, the wire feeding nozzle is fixedly connected to the wire feeding nozzle mounting frame, the wire feeding nozzle mounting frame is fixedly connected to the welding gun mounting frame, the welding gun mounting frame is fixedly connected to the manual cross screw slide, and the GTAW welding gun is adjusted in two dimensions up and down, front and back through the manual cross screw slide. The grinding device is fixedly connected to the slider clamp, and the slide The block fixture is connected to a manual ball screw linear guide slide in the vertical direction, and the slider fixture is adjusted in the up and down directions through the manual ball screw linear guide slide in the vertical direction. The manual ball screw linear guide slide in the vertical direction is fixedly connected to the base plate. The welding workbench is fixedly connected to a servo stepper motor ball screw linear guide slide in the horizontal direction, and the left and right one-dimensional adjustment of the welding workbench is achieved through the servo stepper motor ball screw linear guide slide in the horizontal direction. The horizontal servo stepper motor ball screw linear guide slide is fixedly connected to the base plate, the arc additive manufacturing layer is fixedly connected to the welding workbench, the GTAW welding gun is connected to the welding machine through a wire, the wire feeding nozzle is connected to the wire feeding machine through a wire, the grinding device is connected to the grinding power supply through a wire, and the horizontal servo stepper motor ball screw linear guide slide is connected to the single-axis motion controller through a wire.

[0006] Furthermore, the grinding device includes a housing, a 608 rolling bearing, a carbon brush, a stator-rotor combination, a 6000 rolling bearing, a helical gear shaft, a helical gear, a 6203 rolling bearing, a chuck, and a grinding rod. The stator-rotor combination is connected to the housing through the 608 rolling bearing and the 6000 rolling bearing, the carbon brush is connected to the stator-rotor combination, the helical gear shaft is connected to the stator-rotor combination through the helical gear, the helical gear shaft is connected to the housing through the 6203 rolling bearing, the grinding rod is connected to the helical gear shaft through the chuck, and the rotor-stator combination is connected to the grinding power supply through a wire.

[0007] Furthermore, the grinding rod is a rotary tool head, and the stator-rotor combination has a heat dissipation device.

[0008] Furthermore, the rotary tool head is a cylindrical tool head.

[0009] Furthermore, the GTAW welding gun is connected to the manual cross screw slide through a welding gun mounting bracket.

[0010] Furthermore, the welding workbench is provided with a pressure sensing device and an electronic screen, and the accuracy of the pressure sensing device is ±5N.

[0011] Furthermore, the displacement accuracy of the horizontal servo stepper motor ball screw linear guide slide, the vertical manual ball screw linear guide slide and the manual cross screw slide are all ±0.01mm. The speed adjustment range of the horizontal servo stepper motor linear guide slide is 0-500mm / s, and the adjustment accuracy is 0.01mm / s.

[0012] Furthermore, the slider clamp is manually pressurized, the pressure variation range of the slider clamp is 0N to 120N, and the bearing capacity of the welding workbench is not less than 1000kg.

[0013] Furthermore, the welding machine includes a DC mode, an AC mode and an AC / DC mixed mode, the wire feeder includes two modes: manual wire feeding and automatic wire feeding, and the output power adjustment range of the grinding power supply is 1W-550W.

[0014] The present invention also provides a method for using a grinding synchronous composite GTAW arc additive manufacturing device, which comprises the following steps:

[0015] Step 1: Remove the oxide film on the surface of the base material to be welded, fix the base material on the welding workbench, take the position of the GTAW welding gun as the starting position, and make sure that the GTAW welding gun and the grinding device are in the same vertical section;

[0016] Step 2: Adjust the manual cross screw slide to make sure the tungsten electrode height is 3mm, that is, the distance between the electrode tip and the surface of the base material is 3mm, and the adjustment accuracy is ±0.01mm;

[0017] Step 3: Turn on the welding machine first, then the wire feeder, and finally the single-axis motion controller;

[0018] Step 4: Determine the welding parameters, adjust the welding current of the welding machine, the wire feeding speed of the wire feeder and the moving speed of the welding table, and pass the protective gas;

[0019] Next, there are two situations:

[0020] Case 1: Grinding after adding one layer

[0021] Step 5: Start the arc and start the wire arc additive manufacturing process. After the wire melts and solidifies, a weld is formed.

[0022] Step 6: Turn on the grinding power supply, make sure the grinding rod has a constant speed, manually rotate the handle to drive the slider fixture to drive the grinding rod down to the deposited manufacturing layer, read the pressure value, ensure that the applied pressure is constant, and then carry out the grinding work;

[0023] Case 2: Adding material while grinding

[0024] Step 5: Turn on the grinding power supply, make sure the grinding rod has a constant rotation speed, and manually rotate the handle to allow the slider fixture to drive the grinding rod down to 0.8 mm above the previous deposition manufacturing layer;

[0025] Step 6: Start the arc, start the wire arc additive manufacturing and grinding composite work, the wire melts and deposits into a weld and moves with the workbench to the grinding rod for grinding;

[0026] In either case, proceed to the next step after completing either operation:

[0027] Step 7: After the grinding work is completed, manually rotate the handle to enable the slider fixture to drive the grinding rod to rise away from the manufacturing layer, and turn off the grinding power supply;

[0028] Step 8: Generally, wire arc additive manufacturing requires the deposition of many layers, which requires repeating steps 1 to 7 in sequence to achieve;

[0029] Step 9: When welding is completed, turn off the welder, wire feeder and single-axis motion controller, and the welding work is finished.

[0030] The beneficial effects of the present invention are as follows: after the component is ground, a plastic deformation layer of a certain thickness will usually exist on its surface (original grain refinement), and problems such as uneven surface of the arc additive deposition layer and coarse grains caused by joint crystallization are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of a grinding synchronous composite GTAW arc additive manufacturing device according to the present invention;

[0032] Figure 2 It is a schematic structural diagram of the grinding device according to the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the cylindrical tool head of the present invention;

[0034] 1: Base plate, 2: Vertical manual ball screw linear guide slide, 3: Slider fixture, 4: Grinding device, 5: GTAW welding gun, 6: Wire feed nozzle, 7: Welding workbench, 8: Horizontal servo stepper motor ball screw linear guide slide, 9: Wire feed nozzle mounting bracket, 10: Welding gun mounting bracket, 11: Manual cross screw slide, 12: Frame, 13: Arc additive manufacturing layer, 14: Wire feeder, 15: Welding machine, 16: Grinding power supply, 17: Single-axis motion controller, 4-1: Housing, 4-2: 608 rolling bearing, 4-3: Carbon brush, 4-4: Stator rotor combination, 4-5: 6000 rolling bearing, 4-6: Helical gear shaft, 4-7: Helical gear, 4-8: 6203 rolling bearing, 4-9: Chuck, 4-10: Grinding rod. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0036] 1. See Figure 1-3The present embodiment is described as a grinding synchronous composite GTAW arc additive manufacturing device, which includes a substrate 1, a vertical manual ball screw linear guide slide 2, a slider fixture 3, a grinding device 4, a GTAW welding gun 5, a wire feeder 6, a welding workbench 7, a horizontal servo stepper motor ball screw linear guide slide 8, a wire feeder mounting frame 9, a welding gun mounting frame 10, a manual cross screw slide 11, a frame 12, an arc additive manufacturing layer 13, a wire feeder 14, a welding machine 15, a grinding power supply 16, and a single-axis motion controller 17. The GTAW welding gun 5 is fixedly connected to the welding gun mounting frame 10, and the welding gun mounting frame 10 is fixedly connected to the manual cross screw slide 11. The manual cross screw slide 11 is used to adjust the GTAW welding gun 5 in two dimensions, up and down, front and back. The manual cross screw slide 11 is fixedly connected to the frame 12, and the frame 12 is fixedly connected to the substrate 1. The grinding device 4 is fixedly connected to the slider fixture 3. The block fixture 3 is connected to the vertical manual ball screw linear guide slide 2, and the slider fixture 3 is adjusted in the up and down directions through the vertical manual ball screw linear guide slide 2. The vertical manual ball screw linear guide slide 2 is fixedly connected to the base plate 1, the welding workbench 7 is fixedly connected to the horizontal servo stepper motor ball screw linear guide slide 8, and the welding workbench 7 is adjusted in one-dimensional direction to the left and right through the horizontal servo stepper motor ball screw linear guide slide 8. The arc additive manufacturing layer 13 is fixedly connected to the welding workbench 7, and the horizontal servo stepper motor ball screw linear guide slide 8 is fixedly connected to the base plate 1. The GTAW welding gun 5 is connected to the welding machine 15 through a wire, the wire feeding nozzle 6 is connected to the wire feeding machine 14 through a wire, the grinding device 4 is connected to the grinding power supply 16 through a wire, and the horizontal servo stepper motor ball screw linear guide slide 8 is connected to the single-axis motion controller 17 through a wire.

[0037] The grinding device 4 described in this embodiment includes a housing 4-1, a 608 rolling bearing 4-2, a carbon brush 4-3, a stator-rotor combination 4-4, a 6000 rolling bearing 4-5, a helical gear shaft 4-6, a helical gear 4-7, a 6203 rolling bearing 4-8, a chuck 4-9, and a grinding rod 4-10. The stator-rotor combination 4-4 is connected to the housing 4-1 through the 608 rolling bearing 4-2 and the 6000 rolling bearing 4-5, the carbon brush 4-3 is connected to the stator-rotor combination 4-4, the helical gear shaft 4-6 is connected to the stator-rotor combination 4-4 through the helical gear 4-7, the helical gear shaft 4-6 is connected to the housing 4-1 through the 6203 rolling bearing 4-8, the grinding rod 4-10 is connected to the helical gear shaft 4-6 through the chuck 4-9, and the rotor-stator combination 4-4 is connected to the grinding power supply 16 through a wire. The grinding rod 4-10 is a rotary tool head, and the stator-rotor combination 4-4 has a heat dissipation device. The rotary tool head is a cylindrical tool head, which can rotate stably and at a uniform speed. The GTAW welding gun 5 is connected to the manual cross screw slide 4 through the welding gun mounting frame 10. The welding workbench 8 is provided with a pressure sensor and an electronic screen, and the pressure sensor has an accuracy of ±5N, which is used to display the pressure of the grinding device 4 acting on the welding platform 8. The displacement accuracy of the horizontal servo stepper motor ball screw linear guide slide 8, the vertical manual ball screw linear guide slide 2 and the manual cross screw slide 11 are all ±0.01mm, and the speed adjustment range of the horizontal servo stepper motor linear guide slide 8 is 0-500mm / s, and the adjustment accuracy is 0.01mm / s. The slider fixture 3 is manually pressurized, and the pressure variation range of the slider fixture 3 is 0N~120N, and the bearing capacity of the welding workbench 7 is not less than 1000kg. The welding machine 15 includes a DC mode, an AC mode and an AC / DC mixed mode. The wire feeder 14 includes two modes: manual wire feeding and automatic wire feeding. The output power adjustment range of the grinding power supply 16 is 1W-550W.

[0038] This embodiment provides a method for using a grinding synchronous composite GTAW arc additive manufacturing device, which includes the following steps:

[0039] Step 1: remove the oxide film on the surface of the base material to be welded, fix the base material on the welding workbench 7, take the position of the GTAW welding gun 5 as the starting position, and make sure that the GTAW welding gun 5 and the grinding device 4 are in the same vertical section;

[0040] Step 2: Adjust the manual cross screw slide 11 to determine that the tungsten electrode height is 3 mm, that is, the distance between the electrode tip and the surface of the base material is 3 mm, and the adjustment accuracy is ±0.01 mm;

[0041] Step 3: first turn on the welding machine 15, then turn on the wire feeder 14, and finally turn on the single-axis motion controller 17;

[0042] Step 4: Determine welding parameters, adjust the welding current of the welding machine 15, the wire feeding speed of the wire feeder 14 and the moving speed of the welding table 7 to be suitable, and pass the protective gas;

[0043] Next, there are two situations:

[0044] Case 1: Grinding after adding one layer

[0045] Step 5: Start the arc and start the wire arc additive manufacturing process. After the wire melts and solidifies, a weld is formed.

[0046] Step 6: Turn on the grinding power supply 16, make sure the rotation speed of the grinding rod 4-10 is constant, manually rotate the handle to drive the slider fixture 3 to drive the grinding rod 4-10 down to the deposited manufacturing layer, read the pressure value, ensure that the applied pressure is constant, and perform the grinding work;

[0047] Case 2: Adding material while grinding

[0048] Step 5: Turn on the grinding power supply 16, make sure that the rotation speed of the grinding rod 4-10 is constant, and manually rotate the handle to drive the slider fixture 3 to drive the grinding rod 4-10 to drop to 0.8 mm above the previous deposition manufacturing layer;

[0049] Step 6: Start the arc, start the wire arc additive manufacturing and grinding composite work, the wire melts and deposits into a weld, and moves with the workbench to the grinding rod 4-10 for grinding;

[0050] In either case, proceed to the next step after completing either operation:

[0051] Step 7: After the grinding work is completed, the slider fixture 3 is manually rotated to drive the grinding rods 4-10 to rise away from the manufacturing layer, and the grinding power supply is turned off;

[0052] Step 8: Generally, wire arc additive manufacturing requires stacking many layers, which requires repeating steps 1 to 7 in sequence to achieve;

[0053] Step nine: When welding is completed, turn off the welding machine 15, the wire feeder 14 and the single-axis motion controller 17, and the welding work is finished.

[0054] When welding stainless steel, Q235, titanium and titanium alloys, the welding machine 15 adopts the DC mode, and when welding aluminum and aluminum alloys, magnesium and magnesium alloys, the welding machine 15 adopts the AC mode. The height of the GTAW welding gun 5 is 3mm, that is, the height of the tungsten electrode from the surface of the parent material is 3mm, which can be adjusted by the manual cross screw slide 11, and the adjustment accuracy is ±0.01mm. The grinding device 4 is driven by the slider fixture 3 through the vertical manual ball screw linear guide slide 2 to move up and down. The grinding device 4 is closely contacted with the arc additive manufacturing layer 13 with a certain pressure by manually rotating the handle to apply pressure. The welding workbench 7 has a pressure sensor and an electronic screen to display the pressure. The vertical manual ball screw linear guide slide 2 is fixedly connected to the base plate 1, and the grinding device 4 is fixed thereon by the slider fixture 3. The grinding device 4 cannot be shaken like a radial drilling machine and can only maintain a fixed direction.

[0055] The above is a detailed introduction to a grinding synchronous composite GTAW arc additive manufacturing device and a method of use provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for using a grinding synchronous composite GTAW arc additive manufacturing device, characterized in that: The invention comprises a grinding synchronous composite GTAW arc additive manufacturing device, the device comprising a base plate (1), a vertical manual ball screw linear guide slide (2), a slider fixture (3), a grinding device (4), a GTAW welding gun (5), a wire feed nozzle (6), a welding workbench (7), a horizontal servo stepper motor ball screw linear guide slide (8), a wire feed nozzle mounting frame (9), a welding gun mounting frame (10), a manual cross screw slide (11), a frame (12), an arc additive manufacturing layer (13), a wire feeder (14), and a welding machine (15). ), a grinding power supply (16), a single-axis motion controller (17), the GTAW welding gun (5) is fixedly connected to a welding gun mounting frame (10), the welding gun mounting frame (10) is fixedly connected to a manual cross screw slide (11), the GTAW welding gun (5) is adjusted in two dimensions, up and down, front and back, by the manual cross screw slide (11), the manual cross screw slide (11) is fixedly connected to a frame (12), the frame (12) is fixedly connected to a base plate (1), and the grinding device (4) is fixedly connected to a slider fixture (3) The slider fixture (3) is connected to a vertical manual ball screw linear guide slide (2), and the slider fixture (3) is adjusted in the up and down direction by the vertical manual ball screw linear guide slide (2). The vertical manual ball screw linear guide slide (2) is fixedly connected to the base plate (1), and the welding workbench (7) is fixedly connected to a horizontal servo stepper motor ball screw linear guide slide (8). The welding workbench (7) is adjusted in the left and right one-dimensional direction by the horizontal servo stepper motor ball screw linear guide slide (8). The arc additive manufacturing layer (13) is fixedly connected to the welding workbench (7), the horizontal servo stepper motor ball screw linear guide slide (8) is fixedly connected to the base plate (1), the GTAW welding gun (5) is connected to the welding machine (15) via a wire, the wire feeder (6) is connected to the wire feeder (14) via a wire, the grinding device (4) is connected to the grinding power supply (16) via a wire, and the horizontal servo stepper motor ball screw linear guide slide (8) is connected to the single-axis motion controller (17) via a wire; The grinding device (4) comprises a housing (4-1), a 608 rolling bearing (4-2), a carbon brush (4-3), a stator-rotor assembly (4-4), a 6000 rolling bearing (4-5), a helical gear shaft (4-6), a helical gear (4-7), a 6203 rolling bearing (4-8), a chuck (4-9), and a grinding rod (4-10). The stator-rotor assembly (4-4) is connected to the housing (4-10) via the 608 rolling bearing (4-2) and the 6000 rolling bearing (4-5). 1), the carbon brush (4-3) is connected to the stator-rotor assembly (4-4), the bevel gear shaft (4-6) is connected to the stator-rotor assembly (4-4) via the bevel gear (4-7), the bevel gear shaft (4-6) is connected to the housing (4-1) via a 6203 rolling bearing (4-8), the grinding rod (4-10) is connected to the bevel gear shaft (4-6) via a chuck (4-9), and the stator-rotor assembly (4-4) is connected to a grinding power source (16) via a wire; The method of use comprises the following steps: Step 1: remove the oxide film on the surface of the base material to be welded, fix the base material on the welding workbench (7), take the position of the GTAW welding gun (5) as the starting position, and ensure that the GTAW welding gun (5) and the grinding device (4) are in the same vertical section; Step 2: Adjust the manual cross screw slide (11) to ensure that the tungsten electrode height is 3 mm, that is, the distance between the electrode tip and the surface of the base material is 3 mm, and the adjustment accuracy is ±0.01 mm; Step 3: First turn on the welding machine (15), then turn on the wire feeder (14), and finally turn on the single-axis motion controller (17); Step 4: Determine welding parameters, adjust the welding current of the welding machine (15), the wire feeding speed of the wire feeder (14) and the moving speed of the welding table (7) to be suitable, and pass the protective gas; Next, there are two situations: Case 1: Grinding after adding one layer Step 5: Start the arc and start the wire arc additive manufacturing process. After the wire melts and solidifies, a weld is formed. Step 6: Turn on the grinding power supply (16), make sure that the rotation speed of the grinding rod (4-10) is constant, manually rotate the handle to drive the slider clamp (3) to drive the grinding rod (4-10) down to the deposited manufacturing layer, read the pressure value, ensure that the applied pressure is constant, and perform the grinding work; Case 2: Adding material while grinding Step 5: Turn on the grinding power supply (16), make sure that the rotation speed of the grinding rod (4-10) is constant, and manually rotate the handle to drive the slider clamp (3) to drive the grinding rod (4-10) down to 0.8 mm above the previous deposited manufacturing layer; Step 6: Start the arc, start the wire arc additive manufacturing and grinding composite work, the wire melts and deposits into a weld and moves with the workbench to the grinding rod (4-10) for grinding; In either case, proceed to the next step after completing either operation: Step 7: After the grinding work is completed, the slider clamp (3) is manually rotated to drive the grinding rod (4-10) to rise away from the manufacturing layer, and the grinding power supply is turned off; Step 8: Generally, wire arc additive manufacturing requires the deposition of many layers, which requires repeating steps 1 to 7 in sequence to achieve; Step nine: When welding is completed, the welding machine (15), the wire feeder (14) and the single-axis motion controller (17) are turned off, and the welding work is finished.

2. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 1, characterized in that: The grinding rod (4-10) is a rotary tool head, and the stator-rotor combination (4-4) is provided with a heat dissipation device.

3. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 2, characterized in that: The rotary tool head is a cylindrical tool head.

4. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 1, characterized in that: The GTAW welding gun (5) is connected to a manual cross screw slide (11) via a welding gun mounting frame (10).

5. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 1, characterized in that: The welding workbench (7) is provided with a pressure sensing device and an electronic screen, and the pressure sensing device has an accuracy of ±5N.

6. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 1, characterized in that: The displacement accuracy of the horizontal servo stepper motor ball screw linear guide slide (8), the vertical manual ball screw linear guide slide (2) and the manual cross screw slide (11) are all ±0.01 mm, and the speed adjustment range of the horizontal servo stepper motor ball screw linear guide slide (8) is 0-500 mm / s, and the adjustment accuracy is 0.01 mm / s.

7. The method for using the grinding synchronous composite GTAW arc additive manufacturing device according to claim 1, characterized in that: The slider clamp (3) is manually pressurized, the pressure variation range of the slider clamp (3) is 0N~120N, and the welding workbench (7) has a load-bearing capacity of not less than 1000kg.

8. A method for using a grinding synchronous composite GTAW arc additive manufacturing device according to any one of claims 1 to 7, characterized in that: The welding machine (15) includes a direct current mode, an alternating current mode and an alternating current and direct current mixed mode; the wire feeder (14) includes two modes: manual wire feeding and automatic wire feeding; and the output power of the grinding power supply (16) has an adjustable range of 1W-550W.

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