A high-efficiency electric arc additive manufacturing production line

Abstract

This invention provides a high-efficiency electric arc additive manufacturing production line, comprising an intelligent turnover unit, a high-efficiency additive deposition unit, a high-precision additive deposition unit, a roughing subtractive processing unit, a finishing subtractive processing unit, a heat treatment unit, a non-destructive testing unit, a dimensional inspection unit, and a central control system unit. It can significantly shorten the manufacturing cycle of additive products for mass production, improve delivery qualification rate, and enhance internal quality, outperforming traditional forging / casting manufacturing solutions. It also enables high-quality, end-to-end one-stop delivery of products. The production line can automatically detect product dimensions and internal quality, and automatically repair defective products, improving the product qualification rate. The robotic production line processing units enable full-process monitoring of the operating status, ensuring product manufacturing quality, facilitating fault monitoring and troubleshooting, and improving the overall production efficiency of the equipment.

Description

Technical Field

[0001] This invention belongs to the field of electric arc additive manufacturing technology, and specifically relates to a high-efficiency electric arc additive manufacturing production line. It can significantly shorten the manufacturing cycle of additive products for mass production, improve delivery qualification rate, and enhance internal quality, outperforming traditional forging / casting manufacturing solutions. It also enables high-quality, one-stop delivery throughout the entire process. The production line can automatically detect product dimensions and internal quality, and automatically repair defective products, improving the product qualification rate. Based on robotic processing units, the production line can achieve full-process monitoring of its operating status, ensuring product manufacturing quality, while facilitating fault monitoring and troubleshooting, thus improving the overall production efficiency of the equipment. Background Technology

[0002] Arc-wire additive manufacturing is a digital manufacturing technology for producing large, functionally integrated metal parts. It's a novel additive manufacturing technology that uses an electric arc as a heat source to directly deposit metal wires through wire feeding. This technology features high deposition efficiency and low cost, enabling the rapid manufacturing of large, complex structural components made of high-performance high-temperature alloys, titanium alloys, aluminum alloys, and high-strength steel. Components formed using arc-wire additive manufacturing technology have advantages such as good mechanical properties, low production costs, and high forming efficiency, attracting widespread attention.

[0003] Traditional forging processes for manufacturing aerospace module products suffer from low material utilization and high production costs, while traditional casting processes result in numerous product defects and low first-pass yield. Arc additive manufacturing can improve material utilization and first-pass yield, and it eliminates the need for molds.

[0004] However, when facing the mass production of compartment-type products, the arc additive manufacturing process suffers from a longer production cycle compared to traditional forging / casting processes. Since additive manufacturing of single compartment-type products requires the separate forming of the main cylindrical structure, internal and external rib structures, and flange structures, a single printing machine suffers from problems such as sequential processes, repeated positioning for printing each local structure, and long printing times. Furthermore, individual machining is required for certain areas during printing, and heat treatment, non-destructive testing, dimensional inspection, and defect repair are necessary after printing. These multiple processes result in numerous steps in the additive manufacturing of single compartment-type products, which cannot meet the needs of mass production. Therefore, there is an urgent need for a high-efficiency, end-to-end production line solution based on arc additive manufacturing to meet the demands for rapid, high-quality mass production of compartment-type structural products. Summary of the Invention

[0005] In order to overcome the shortcomings of the existing technology, the inventors have conducted intensive research and provided a high-efficiency electric arc additive manufacturing production line, which solves the problems of serial equipment processes, repeated positioning, and long printing time in additive printing manufacturing, while meeting the needs of rapid and high-quality mass production.

[0006] The technical solutions provided by the present invention are as follows:

[0007] A high-efficiency electric arc additive manufacturing production line includes an intelligent turnover unit, a high-efficiency additive deposition unit, a high-precision additive deposition unit, a roughing subtractive processing unit, a finishing subtractive processing unit, a heat treatment unit, a non-destructive testing unit, a dimensional inspection unit, and a central control system unit.

[0008] The intelligent turnover unit is used to carry the additive products between various processes; the high-efficiency additive deposition unit is used for additive forming of the main structure of the product; the high-precision additive deposition unit is used for additive forming of local structures on the main structure of the product; the roughing subtractive processing unit is used for roughing the inner and outer surfaces of the blank product; the finishing subtractive processing unit is used for finishing the inner and outer surfaces of the blank product; the heat treatment unit is used for stress relief and microstructure control of the product; the non-destructive testing unit is used for testing the internal quality of the product after heat treatment; the dimensional detection unit is used for testing the external dimensions of the product after heat treatment; and the overall control system unit is used for inter-process turnover allocation, capacity matching, production progress control, and production quality monitoring.

[0009] Furthermore, the intelligent turnover unit includes at least one transfer vehicle, a substrate mounting fixture, and a turnover channel; the transfer vehicle carries the substrate mounting fixture and rotates the substrate and additive products mounted on the substrate; the substrate mounting fixture is used to fix the substrate and move it between processes with the substrate, and it is machined with positioning holes or installed with positioning parts to position it with positioning holes or positioning parts on the processing platforms of other processing units; the turnover channel is a dedicated operating channel for the transfer vehicle.

[0010] Furthermore, the high-efficiency additive deposition unit includes multiple sets of additive robots, welding machines, and a single-axis rotary platform; the single-axis rotary platform is used to support the substrate and the product formed on the substrate; the additive robots are evenly distributed around the single-axis rotary platform, and each set of additive robots holds the welding gun of the welding machine to simultaneously perform additive forming of the blank.

[0011] Furthermore, the high-precision additive deposition unit includes a single additive robot, a welding machine, and a dual-axis positioner; the dual-axis positioner has a central rotating axis and a horizontal rotating axis, on which a table is fixed, which can drive the substrate on the table to rotate horizontally indefinitely and flip 90° on both sides; the single additive robot holds the welding gun of the welding machine, and the dual-axis servo positioner performs multi-axis coordinated motion to complete the additive forming of the internal and external feature structures of the blank product.

[0012] Furthermore, the diameter of the welding wire used in the high-efficiency additive deposition unit during additive forming is greater than the diameter of the welding wire used in the high-precision additive deposition unit during additive forming; the wire feeding speed of the welding wire in the high-efficiency additive deposition unit during additive forming is greater than the wire feeding speed of the welding wire in the high-precision additive deposition unit during additive forming.

[0013] Furthermore, when the high-efficiency additive deposition unit performs additive forming, the welding wire diameter is 1.2–1.6 mm, the wire feed speed is 9–15 m / min, the welding torch supports simultaneous feeding of two wires for deposition forming, and the additive deposition efficiency of a single robot group is not less than 500 cm⁻¹. 3 / h.

[0014] Furthermore, when the high-precision additive deposition unit performs additive forming, the welding wire diameter is 0.8 to 1.0 mm, the wire feeding speed is 4 to 9 m / min, the welding torch only supports feeding a single wire for deposition forming, and the single-sided contour forming accuracy of additive deposition is better than 2 mm.

[0015] Furthermore, the roughing subtractive processing unit can be used for grinding specific areas of the inner and outer walls before, after, or before and after forming of the high-precision additive deposition unit; the roughing subtractive processing unit includes a subtractive robot, an electric spindle, and a rotary platform; the subtractive robot clamps the electric spindle so that its fixed milling cutter performs milling processing on the corresponding area of ​​the additive blank on the rotary platform, and the electric spindle rotates at a speed of 6000 to 10000 rpm / min during processing.

[0016] Furthermore, the heat treatment unit includes a solution furnace and an aging furnace, used for solution and aging heat treatment of the blank product after additive forming.

[0017] Furthermore, the non-destructive testing unit includes an X-ray machine, a non-destructive testing robot, and a rotating testing platform. The non-destructive testing robot holds an X-ray inspection head to perform internal quality inspection on the rough-machined or fine-machined products on the rotating testing platform, identifies areas with excessive porosity and incomplete fusion defects, and feeds the collected data back to the central control system unit.

[0018] Furthermore, the dimension detection unit includes a 3D scanning instrument, a 3D scanning robot, and a detection rotary platform. The 3D scanning robot holds the 3D scanning detection head of the 3D scanning instrument to perform 3D scanning detection of the inner and outer surfaces of the heat-treated additive blank or the finished product on the detection rotary platform, identify the missing or deformed areas of the product, and feed the collected data back to the central control system.

[0019] Furthermore, the central control system unit is used to perform the following functions:

[0020] (1) By controlling the turnover of transfer vehicles, additive products are circulated in each manufacturing unit;

[0021] (2) Calculate the time required to manufacture the target product in each manufacturing unit, select the longest time required for a single longest manufacturing unit, and use it as the shortest production cycle for batch production of the product; the central control system unit adjusts the remaining idle manufacturing units to produce other types of products based on the shortest production cycle.

[0022] (3) By detecting feedback data through X-ray and three-dimensional scanning, determine whether the produced products meet the design requirements, and classify the products according to product quality to be applicable to different levels of working conditions;

[0023] (4) Based on the defects and areas with out-of-tolerance contours detected by X-ray and 3D scanning, the product is transferred to the finishing subtractive processing unit to eliminate the defects and areas with out-of-tolerance contours. Then it is transferred to the high-precision additive deposition unit for secondary additive processing of the missing areas. After secondary heat treatment, it is transferred to the finishing subtractive processing unit for finishing. Finally, after passing the secondary inspection by the non-destructive testing unit X-ray and the dimensional inspection unit, it is a qualified product.

[0024] (5) Monitor the motion coordinates of each robot and the running status of each processing head in real time to determine whether they are working in each unit; handle and maintain them in a timely manner according to the abnormal alarms that occur in each unit.

[0025] The high-efficiency electric arc additive manufacturing production line provided by the present invention has the following beneficial effects:

[0026] (1) The present invention provides a high-efficiency electric arc additive manufacturing production line, whose manufacturing cycle is better than that of traditional forging / casting; it sets up additive forming and subtractive processing units with different efficiencies according to the product structure characteristics, and is equipped with heat treatment, non-destructive testing and dimensional inspection units, which solves the problems of serial equipment process, repeated positioning and long printing time in the manufacturing of a single equipment, and realizes one-stop delivery of the entire product process.

[0027] (2) The present invention provides a high-efficiency electric arc additive manufacturing production line, which can realize automatic detection of product size and internal quality through non-destructive testing unit and size detection unit, ensuring that the produced products meet the quality requirements; and under the control of the central control system unit, products with internal quality and size problems can be automatically repaired, thereby improving the product delivery qualification rate.

[0028] (3) The high-efficiency electric arc additive manufacturing production line provided by the present invention is based on a robot control system. The technical solution for coordinating control of multiple types of robots and external axis linkage control is highly mature, so the overall system is easy to implement. Based on the robot-type processing unit, the entire process of operation status can be monitored, ensuring the forming quality of the product. At the same time, it is convenient for fault monitoring and troubleshooting, and improves the overall production efficiency of the equipment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the high-efficiency electric arc additive manufacturing production line of the present invention;

[0030] Figure 2 This is a preferred embodiment of the substrate mounting fixture structure of the present invention. Detailed Implementation

[0031] The features and advantages of the present invention will become clearer and more apparent from the following detailed description.

[0032] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0033] like Figure 1 As shown, the present invention provides a high-efficiency electric arc additive manufacturing production line, including an intelligent turnover unit, a high-efficiency additive deposition unit, a high-precision additive deposition unit, a roughing subtractive processing unit, a finishing subtractive processing unit, a heat treatment unit, a non-destructive testing unit, a dimensional inspection unit, and a central control system unit.

[0034] The intelligent turnover unit is used to carry additive products between various processes; the high-efficiency additive deposition unit is used for high-efficiency additive forming of the main structure of the product; the high-precision additive deposition unit is used for high-precision additive forming of local structures on the main structure of the product, such as the additive forming of internal and external rib structures and flange structures on the main cylindrical structure; the roughing subtractive processing unit is used for rough machining of the inner and outer surfaces of the blank product; the finishing subtractive processing unit is used for fine machining of the inner and outer surfaces of the blank product; the heat treatment unit is used for stress relief and microstructure control of the product; the non-destructive testing unit is used for internal quality testing of the product; the dimensional inspection unit is used for external dimensional inspection of the product; and the overall control system unit is used for inter-process turnover allocation, capacity matching, production progress control, and production quality monitoring.

[0035] In this invention, the intelligent turnover unit consists of at least one AGV (Automated Guided Vehicle) trolley, a substrate mounting fixture, and a turnover channel. The AGV trolley is responsible for carrying the substrate mounting fixture and facilitating the turnover of the substrates and additive products mounted on them. The substrate mounting fixture is used to fix the substrates and transport them between processes. It has positioning holes or mounting positioning components, which enable rapid positioning on the processing platforms of other processing units, such as through pins. The substrate mounting fixture is fixed in position on the processing platforms of other processing units, and the substrates and products it carries are also fixed in position on the processing platforms, avoiding repeated positioning during multiple turnovers. The turnover channel is mainly a dedicated operating channel for the AGV trolley to prevent interference or obstruction by foreign objects.

[0036] like Figure 2 As shown, the substrate mounting fixture is a flexible fixture, including a central mounting area 1, a peripheral mounting area 2, and an expandable telescopic rod 3. The peripheral mounting area is distributed around the periphery of the central mounting area and is connected to the central mounting area by the expandable telescopic rod. The peripheral mounting area can be a single structure or a modular structure. When the peripheral mounting area is a single structure, the entire peripheral mounting area moves as a whole; when the peripheral mounting area is a modular structure, the peripheral mounting area moves in sections, allowing for more flexible movement. Positioning holes or positioning components are machined on the central mounting area to ensure that the positions of the positioning holes or positioning components remain unchanged.

[0037] In this invention, the high-efficiency additive deposition unit consists of 2-4 groups of additive robots, a welding machine, and a single-axis rotary platform. The single-axis rotary platform carries the substrate and the product formed on it. The additive robots are evenly distributed around the single-axis rotary platform, with each group of robots simultaneously performing high-efficiency additive forming of the blank by holding the welding torch of the welding machine. To further improve deposition efficiency, a welding wire with a diameter of 1.2-1.6 mm is selected, the welding torch supports simultaneous feeding of two wires for deposition, the wire feeding speed of the single-element welding machine is 9-15 m / min, and the additive deposition efficiency of a single robot group is not less than 500 cm⁻¹. 3 / h, preferably not less than 1000cm 3 / h.

[0038] For example, the high-efficiency additive deposition unit consists of two sets of additive robots, a welding machine, and a single-axis rotary platform. The additive robots are evenly distributed around the single-axis rotary platform, and each set of additive robots holds a welding torch to simultaneously perform high-efficiency additive forming of the blank. A 1.6mm diameter welding wire is used, and the welding torch supports simultaneous feeding of two wires for deposition. The wire feeding speed of the single-element welding machine is 12m / min, and the additive deposition efficiency of a single set of robots can reach no less than 1000cm³. 3 / h.

[0039] In this invention, the high-precision additive deposition unit consists of a single additive robot, a welding machine, and a dual-axis positioner. The dual-axis positioner has a central rotating axis and a horizontal rotating axis, on which a platform is fixed. It can drive the substrate on the platform to rotate horizontally indefinitely and flip 90° to both sides, thus meeting the positional requirements of various products during the arc additive manufacturing process. The single additive robot holds the welding torch of the welding machine, and the dual-axis servo positioner performs multi-axis coordinated motion to complete the high-precision additive forming of the internal and external features of the blank product. To further improve surface forming accuracy, the welding wire is selected with a diameter of 0.8–1.0 mm, the welding torch only supports single-wire deposition, and the wire feeding speed of the single-element welding machine is 4–9 m / min, resulting in a single-sided contour forming accuracy of better than 2 mm. For example, if the welding wire is selected with a diameter of 0.8 mm, the welding torch only supports single-wire deposition, and the wire feeding speed of the single-element welding machine is within the range of 5 m / min, the single-sided contour forming accuracy of the additive deposition is better than 1 mm.

[0040] In this invention, the roughing subtractive manufacturing unit consists of a high-tonnage subtractive robot, an electric spindle, and a rotary platform. Depending on the location where excess material needs to be removed from the blank surface, the subtractive robot clamps the electric spindle, allowing its fixed milling cutter to perform high-efficiency milling of the corresponding area of ​​the additive blank on the rotary platform. The electric spindle rotates at a speed of 6000–10000 rpm / min during machining. The roughing subtractive manufacturing unit can be used for grinding specific areas of the inner and outer walls before, after, or before and after the high-precision additive deposition unit is formed.

[0041] The finishing and subtractive processing unit consists of a three-axis or five-axis gantry machining center, used to perform finishing on products after rough machining to ensure the final dimensions of the products.

[0042] In this invention, the heat treatment unit includes a solution furnace and an aging furnace, which are used for solution and aging heat treatment of the blank product after additive forming.

[0043] In this invention, the non-destructive testing unit consists of an X-ray machine, a non-destructive testing robot, and a rotating testing platform. The non-destructive testing robot holds an X-ray inspection head to perform internal quality inspection on the rough-machined or fine-machined products on the rotating testing platform, identifies areas with excessive pores and incomplete fusion defects, and feeds the collected data back to the central control system unit.

[0044] In this invention, the size detection unit consists of a 3D scanning instrument, a 3D scanning robot, and a detection rotary platform. The 3D scanning robot holds the 3D scanning detection head of the 3D scanning instrument and performs 3D scanning detection on the internal and external surfaces of the heat-treated additive blank or the finished product on the detection rotary platform to identify the missing or deformed areas of the product, and feeds the collected data back to the central control system.

[0045] In this invention, the central control system unit consists of a PLC panel, a data signal acquisition unit, etc., and performs the following functions through the central control unit:

[0046] (1) Production process control: By controlling the turnover of AGV carts, additive products can be transferred between the manufacturing units of "addition-subtraction-heat treatment-inspection".

[0047] (2) Pulsating cycle time T control: Based on the product structure characteristics of batch production, the time tn required to manufacture the product in each manufacturing unit is statistically analyzed, and the longest time T required for a single longest manufacturing unit is selected, which is the shortest production cycle time T for batch production of the product. While ensuring the batch production of this type of product, the central control system unit can adjust the remaining idle manufacturing units to produce other types of products, further improving equipment utilization.

[0048] (3) Production quality control: Using X-ray and 3D scanning to detect feedback data, determine whether the manufactured products meet the design requirements, and classify products according to quality to apply different levels of working conditions. The higher the severity of the working condition, the higher the requirements for product quality. Products with defects repaired are not allowed to be used under high-level working conditions.

[0049] (4) Defective product repair: Based on the defects and areas with out-of-tolerance contours detected by X-ray and 3D scanning, the product is transferred to the finishing subtractive processing unit to remove the defects and areas with out-of-tolerance contours. Then it is transferred to the high-precision additive deposition unit for secondary additive processing of the missing areas. After secondary heat treatment, it is transferred to the finishing subtractive processing unit for finishing. Finally, after passing the secondary inspection by the non-destructive testing unit X-ray and the dimensional inspection unit, it is a qualified product. This method can greatly improve the product qualification rate.

[0050] (5) Status monitoring and alarms for each unit, including real-time online monitoring of the motion coordinates of each robot and the operating status of each processing head (welding gun and electric spindle), to determine whether they are working in each unit, ensuring real-time manufacturing quality control of the product. Timely handling and maintenance based on abnormal alarms occurring in each unit to ensure the normal and efficient operation of the production line.

[0051] The present invention has been described in detail above with reference to specific embodiments and exemplary examples; however, these descriptions should not be construed as limiting the present invention. Those skilled in the art will understand that various equivalent substitutions, modifications, or improvements can be made to the technical solutions and embodiments of the present invention without departing from the spirit and scope of the invention, and all such modifications and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims.

[0052] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A high-efficiency electric arc additive manufacturing production line, characterized in that, It includes an intelligent turnover unit, a high-efficiency additive deposition unit, a high-precision additive deposition unit, a roughing subtractive processing unit, a finishing subtractive processing unit, a heat treatment unit, a non-destructive testing unit, a dimensional inspection unit, and a central control system unit; The intelligent turnover unit is used to carry the additive products between various processes; the high-efficiency additive deposition unit is used to perform additive forming of the main structure of the product. The high-precision additive deposition unit is used for additive forming of local structures on the main body of the product; the roughing subtractive processing unit is used for roughing the inner and outer surfaces of the blank product; the finishing subtractive processing unit is used for finishing the inner and outer surfaces of the blank product; the heat treatment unit is used for stress relief and microstructure control of the product; the non-destructive testing unit is used for testing the internal quality of the product after heat treatment; the dimensional inspection unit is used for testing the external dimensions of the product after heat treatment; and the overall control system unit is used for inter-process turnover allocation, capacity matching, production progress control, and production quality monitoring. The central control system unit is specifically used to implement the following functions: (1) By controlling the turnover of transfer vehicles, additive products are circulated in each manufacturing unit; (2) Calculate the time required to manufacture the target product in each manufacturing unit, and select the longest time required for a single longest manufacturing unit as the shortest production cycle for batch production of the product; the central control system unit adjusts the remaining idle manufacturing units to produce other types of products based on the shortest production cycle. (3) By detecting feedback data through X-ray and three-dimensional scanning, determine whether the produced products meet the design requirements, and classify the products according to product quality to be applicable to different levels of working conditions; (4) Based on the defects and areas with out-of-tolerance contours detected by X-ray and 3D scanning, the product is transferred to the finishing subtractive processing unit to eliminate the defects and areas with out-of-tolerance contours. Then it is transferred to the high-precision additive deposition unit for secondary additive processing of the missing area. After secondary heat treatment, it is transferred to the finishing subtractive processing unit for finishing. Finally, after passing the secondary inspection by the non-destructive testing unit X-ray and the dimensional inspection unit, it is a qualified product. (5) Monitor the motion coordinates of each robot and the running status of each processing head in real time to determine whether they are working in each unit; handle and maintain them in a timely manner according to the abnormal alarms that occur in each unit.

2. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The intelligent turnover unit includes at least one transfer vehicle, a substrate mounting fixture, and a turnover channel; the transfer vehicle carries the substrate mounting fixture and rotates the substrate and additive products mounted on the substrate; the substrate mounting fixture is used to fix the substrate and move it between processes with the substrate, and it is machined with positioning holes or installed with positioning parts to position it with positioning holes or positioning parts on the processing platforms of other processing units; the turnover channel is a dedicated operating channel for the transfer vehicle.

3. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The high-efficiency additive deposition unit includes multiple additive robots, a welding machine, and a single-axis rotary platform. The single-axis rotary platform is used to support the substrate and the product formed on the substrate. The additive robots are evenly distributed around the single-axis rotary platform, and each group of additive robots holds the welding gun of the welding machine to simultaneously perform additive forming of the blank.

4. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The high-precision additive deposition unit includes a single additive robot, a welding machine, and a dual-axis positioner. The dual-axis positioner has a central rotating axis and a horizontal rotating axis, on which a table is fixed, which can drive the substrate on the table to rotate horizontally indefinitely and flip 90° to both sides. The single additive robot holds the welding gun of the welding machine, and the dual-axis servo positioner performs multi-axis coordinated motion to complete the additive forming of the internal and external feature structures of the blank product.

5. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The diameter of the welding wire used in the high-efficiency additive deposition unit during additive forming is greater than the diameter of the welding wire used in the high-precision additive deposition unit during additive forming; the wire feeding speed of the welding wire in the high-efficiency additive deposition unit during additive forming is greater than the wire feeding speed of the welding wire in the high-precision additive deposition unit during additive forming.

6. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, When the high-efficiency additive deposition unit performs additive forming, the welding wire diameter is 1.2~1.6mm, the wire feed speed is 9~15m / min, and the welding torch supports simultaneous feeding of two wires for deposition forming. The additive deposition efficiency of a single robot group is not less than 500 cm⁻¹. 3 / h; and / or When the high-precision additive deposition unit performs additive forming, the welding wire diameter is 0.8~1.0mm, the wire feeding speed is 4~9m / min, the welding gun only supports feeding a single wire for deposition forming, and the single-sided contour forming accuracy of additive deposition is better than 2mm.

7. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The roughing subtractive processing unit can be used for grinding specific areas of the inner and outer walls before, after, or before and after forming of the high-precision additive deposition unit. The roughing subtractive processing unit includes a subtractive robot, an electric spindle, and a rotary platform. The subtractive robot clamps the electric spindle and uses its fixed milling cutter to perform milling of the corresponding area of ​​the additive blank on the rotary platform. The electric spindle rotates at a speed of 6000~10000 rpm / min during processing.

8. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The heat treatment unit includes a solution furnace and an aging furnace, used for solution and aging heat treatment of the blank product after additive forming; and / or The non-destructive testing unit includes an X-ray machine, a non-destructive testing robot, and a rotating testing platform. The non-destructive testing robot holds an X-ray inspection head to perform internal quality inspection on the rough-machined or fine-machined products on the rotating testing platform, identifies areas with excessive pores and incomplete fusion defects, and feeds the collected data back to the central control system unit.

9. The high-efficiency electric arc additive manufacturing production line according to claim 1, characterized in that, The size detection unit includes a 3D scanning instrument, a 3D scanning robot, and a detection rotary platform. The 3D scanning robot holds the 3D scanning head of the 3D scanning instrument to perform 3D scanning detection of the internal and external surfaces of the heat-treated additive blank or the finished product on the detection rotary platform, identify the missing or deformed areas of the product, and feed the collected data back to the central control system.

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