Device for improving electric arc additive forming precision and structure refinement and using method

Abstract

The invention discloses a device for improving electric arc additive forming precision and structure refinement and a using method. Comprising an X-axis synchronous belt linear module, a first Z-axis synchronous belt linear module, an interlayer grinding work head, an interlayer grinding work head clamp, a coupler, a second Z-axis synchronous belt linear module, a welding gun, a welding gun clamp, an optical axis, an X-axis synchronous belt linear module mounting frame, a first Y-axis synchronous belt linear module, a multi-axis motion controller, a welding power source, a clamp, an additive part and a workbench. An interlayer grinding working head controller and a Y-axis synchronous belt linear module II are arranged on the first Y-axis synchronous belt linear module. After interlayer grinding of a certain depth is carried out on the top of the additive manufacturing deposition layer, the convex face of the top of the deposition layer becomes a plane, a plane foundation is laid for manufacturing of a subsequent new deposition layer, the tendency that liquid metal of the subsequent deposition layer flows towards the two sides is reduced, the height consistency of the subsequent deposition layer is guaranteed, and the production efficiency is improved. And meanwhile, grains which penetrate through a plurality of deposition layers to epitaxially grow in the additive manufacturing component can be refined.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing and subtractive manufacturing, and in particular to a device and a method for using the device to improve arc additive forming accuracy and microstructure refinement. Background Art

[0002] Arc additive manufacturing is a process that uses arc welding technology for additive manufacturing. It mainly deposits metal wire or powder layer by layer through arc welding equipment to manufacture complex three-dimensional structures. This technology has high material utilization and relatively fast manufacturing speed, but it also faces some challenges, such as precision control and microstructure refinement.

[0003] However, the prior art has the following problems:

[0004] 1. The top of the original arc additive deposition layer is convex, which causes the liquid metal to flow to both sides when manufacturing a new deposition layer on it, which is not conducive to maintaining the height of the deposition layer. After interlayer grinding, the convex surface on the top of the deposition layer becomes a plane, which prepares a good foundation for the manufacture of subsequent deposition layers.

[0005] 2. Arc additive manufacturing parts have a coarse internal structure due to the high heat input of the arc. Interlayer grinding is beneficial to the inter-crystallization of the split grains, refine the internal structure, and improve the mechanical properties of the additive parts.

[0006] In view of this, the present invention proposes a device and a method for improving arc additive manufacturing accuracy and microstructure refinement. Summary of the invention

[0007] The purpose of the present invention is to provide a device and method for improving arc additive manufacturing accuracy and microstructure refinement in order to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a device for improving arc additive forming accuracy and microstructure refinement, comprising: an X-axis synchronous belt linear module, a Z-axis synchronous belt linear module 1, an interlayer grinding work head, an interlayer grinding work head fixture, a coupling, a Z-axis synchronous belt linear module 2, a welding gun, a welding gun fixture, an optical axis, an X-axis synchronous belt linear module mounting frame, a Y-axis synchronous belt linear module 1, a multi-axis motion controller, a welding power supply, a fixture, an additive part, a workbench, an interlayer grinding work head controller, and a Y-axis synchronous belt linear module 2; the X-axis synchronous belt linear module, the Y-axis synchronous belt linear module 1, the Y-axis synchronous belt linear module 2, the Z-axis synchronous belt linear module 1 and the Z-axis synchronous belt linear module 2 are all provided with sliding blocks, and the The interlayer grinding work head is installed on the sliding block of the Z-axis synchronous belt linear module one through the interlayer grinding work head fixture, the interlayer grinding work head is connected to the interlayer grinding work head controller through a wire, the Z-axis synchronous belt linear module one is connected to the multi-axis motion controller through a wire, the welding gun is installed on the sliding block of the Z-axis synchronous belt linear module two through the welding gun fixture, the welding gun is connected to the welding power supply through a wire, the Z-axis synchronous belt linear module two is connected to the multi-axis motion controller through a wire, the Z-axis synchronous belt linear module one is installed on the sliding block of the X-axis synchronous belt linear module, the Z-axis synchronous belt linear module two is installed on the sliding block of the X-axis synchronous belt linear module, and the X-axis synchronous belt linear The linear module is installed on the X-axis synchronous belt linear module mounting frame, the X-axis synchronous belt linear module mounting frame is installed on the sliding blocks of the Y-axis synchronous belt linear module 1 and the Y-axis synchronous belt linear module 2, the Y-axis synchronous belt linear module 1 is connected to the Y-axis synchronous belt linear module 2 through an optical axis and a coupling, the Y-axis synchronous belt linear module 1 and the Y-axis synchronous belt linear module 2 are installed on a workbench, the X-axis synchronous belt linear module is connected to the multi-axis motion controller through a wire, the Y-axis synchronous belt linear module 1 is connected to the multi-axis motion controller through a wire, the additive part is installed on the workbench through a fixture, the multi-axis motion controller is turned on, and programming is performed through the multi-axis motion controller to control the Y-axis synchronous belt Linear module one and Y-axis synchronous belt linear module two drive X-axis synchronous belt linear module, which in turn drives Z-axis synchronous belt linear module one and Z-axis synchronous belt linear module two to move the interlayer grinding work head and welding gun to the specified starting position above the substrate of the additive part, turn on the interlayer grinding work head controller, determine the spindle speed of the interlayer grinding work head, and when the additive manufacturing work is completed, use the multi-axis motion controller to control Y-axis synchronous belt linear module one and Y-axis synchronous belt linear module two to drive X-axis synchronous belt linear module, which in turn drives Z-axis synchronous belt linear module one and Z-axis synchronous belt linear module two to move the interlayer grinding work head and welding gun to a safe position away from the additive part, leaving enough working space for removing the additive part.

[0010] Preferably, the interlayer grinding work head also includes bearing 1, an electric spindle housing, a stator, a spindle, bearing 2, an upper coupling, a lower coupling, an interlayer grinding tool mounting tube, an elastic sleeve, a nut, and an interlayer grinding tool. Bearing 1 and bearing 2 are mounted on the bearing seat of the electric spindle housing, and the spindle is mounted inside the electric spindle housing through the stator, bearing 1 and bearing 2. The stator is provided with a cooling sleeve, and the spindle is connected to the interlayer grinding tool mounting tube through the upper coupling and the lower coupling. The interlayer grinding tool is mounted in the elastic sleeve and mounted on the interlayer grinding tool mounting tube through the nut. The X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 1 to drive the interlayer grinding work head to perform interlayer grinding on the top of the additive deposition layer that has been manufactured.

[0011] Preferably, the welding gun also includes a gun neck, a welding wire, an insulating sleeve, a conductive nozzle mounting seat, a diverter ring, a conductive nozzle, and a nozzle. The conductive nozzle is mounted on the conductive nozzle mounting seat. The diverter ring is connected to the conductive nozzle mounting seat to play a role in shielding gas diversion. The insulating sleeve is installed between the gun neck and the nozzle. The welding wire passes through the gun neck, the insulating sleeve, the conductive nozzle mounting seat, the conductive nozzle and the nozzle. The welding gun strikes an arc above the substrate of the additive part to perform arc additive manufacturing. The interlayer grinding work head controller clicks to start. At the same time, the X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 2 to drive the welding gun to move along the program-set path to lay the additive deposition layer.

[0012] Preferably, the welding power source is equipped with a wire feeder for feeding the welding wire, and the welding power source has a normal current waveform mode, a single pulse current waveform mode and a double pulse current waveform mode.

[0013] Preferably, the parameters that can be adjusted in the ordinary current waveform mode are wire feeding speed, voltage and dynamic value; the parameters that can be adjusted in the single pulse current waveform mode are wire feeding speed, pulse current and dynamic value of the pulse current reduction or increase curve; the parameters that can be adjusted in the double pulse current waveform mode are wire feeding speed, pulse current, dynamic value, double pulse amplitude and double pulse frequency.

[0014] Preferably, the multi-axis motion controller can control 1 to 6 axes, and each axis can be controlled individually by the multi-axis motion controller. The multi-axis motion controller can control a stepper motor, and the multi-axis motion controller can also control a servo motor.

[0015] Preferably, the multi-axis motion controller has limit protection, and the multi-axis motion controller supports hard limit and soft limit.

[0016] Preferably, the rotation speed of the interlayer grinding work head is less than or equal to 12000 rpm, and the diameter of the electric spindle housing is 100 mm to 170 mm.

[0017] Preferably, the movement stroke of the X-axis synchronous belt linear module, the Y-axis synchronous belt linear module 1 and the Y-axis synchronous belt linear module 2 is 1000 mm, and the movement stroke of the Z-axis synchronous belt linear module 1 and the Z-axis synchronous belt linear module 2 is 600 mm.

[0018] Preferably, a method for using a device for improving arc additive forming accuracy and microstructure refinement adopts any of the above-mentioned devices for improving arc additive forming accuracy and microstructure refinement, and further comprises the following steps:

[0019] Step 1: remove the surface oxide film on the additive component substrate, and fix the additive component substrate on the workbench through a clamp;

[0020] Step 2: Turn on the multi-axis motion controller, program the multi-axis motion controller, control the Y-axis synchronous belt linear module 1 and the Y-axis synchronous belt linear module 2 to drive the X-axis synchronous belt linear module to drive the Z-axis synchronous belt linear module 1 and the Z-axis synchronous belt linear module 2 to move the interlayer grinding work head and the welding gun to the specified starting position above the substrate of the additive part;

[0021] Step 3: Turn on the welding power supply and determine welding parameters such as wire feeding speed and dynamic value;

[0022] Step 4: Turn on the interlayer grinding head controller and determine the spindle speed of the interlayer grinding head;

[0023] Step 5: The welding gun strikes an arc above the substrate of the additive part to perform arc additive manufacturing. The interlayer grinding work head controller clicks to start. At the same time, the X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 2 to drive the welding gun to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 1 to drive the interlayer grinding work head to perform interlayer grinding on the top of the manufactured additive deposition layer.

[0024] Step 6: When one additive deposition layer is completed, the welding gun needs to extinguish the arc first, and the interlayer grinding work head controller is paused before manufacturing a new additive deposition layer. The multi-axis motion controller will control the X-axis synchronous belt linear module to drive the Z-axis synchronous belt linear module 1 and the Z-axis synchronous belt linear module 2 through the program to move the interlayer grinding work head and the welding gun to the specified starting position above the manufactured additive deposition layer;

[0025] Step 7: The welding gun strikes an arc above the manufactured additive deposition layer, and the interlayer grinding work head controller clicks to start. At the same time, the X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 2 to drive the welding gun to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module drives the Z-axis synchronous belt linear module 1 to drive the interlayer grinding work head to perform interlayer grinding on the top of the manufactured additive deposition layer, and then proceed to step 6;

[0026] Step 8: When multiple layers of additive deposition are required, repeat the operations of steps 5, 6 and 7;

[0027] Step 9: When the additive manufacturing work is completed, use the multi-axis motion controller to control the Y-axis synchronous belt linear module 1 and the Y-axis synchronous belt linear module 2 to drive the X-axis synchronous belt linear module to drive the Z-axis synchronous belt linear module 1 and the Z-axis synchronous belt linear module 2 to move the interlayer grinding work head and the welding gun to a safe position away from the additive parts, leaving enough working space for removing the additive parts, turn off the multi-axis motion controller, turn off the welding power supply, turn off the interlayer grinding work head controller, and the work is completed.

[0028] The beneficial effects are:

[0029] 1. By using the cooperation of X-axis synchronous belt linear module, Y-axis synchronous belt linear module 1, Y-axis synchronous belt linear module 2, Z-axis synchronous belt linear module 1 and Z-axis synchronous belt linear module 2, the welding gun and the interlayer grinding work head can be driven under the control of the multi-axis motion controller to manufacture three-dimensional arc additive parts of any shape, with higher automation efficiency.

[0030] 2. After the top of the additive manufacturing deposition layer has undergone a certain depth of interlayer grinding, the convex surface of the top of the deposition layer becomes a plane, which lays a flat foundation for the subsequent manufacture of new deposition layers, reduces the tendency of the subsequent deposition layer to flow to both sides when it is liquid metal, ensures the consistency of the height of the subsequent deposition layer, and avoids the situation that the top of the ordinary arc additive deposition layer is convex, which makes the subsequent deposition layer easy to flow to both sides when it is liquid metal, causing the height of the subsequent deposition layer to become thinner and thinner, thereby reducing the deposition efficiency.

[0031] 3. By performing interlayer grinding on the top of each deposited layer, the inter-crystalline grains are cut and the internal structure is refined, thereby improving the mechanical properties and avoiding the coarse inter-crystalline grains caused by the large arc heat input during ordinary arc additive manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the interlayer grinding work head of the present invention;

[0035] Figure 3 It is a schematic diagram of the welding gun structure of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the interlayer grinding work head fixture of the present invention;

[0037] Figure 5 It is a schematic structural diagram of a welding gun fixture of the present invention.

[0038] The reference numerals are as follows: 1. X-axis synchronous belt linear module; 2. Z-axis synchronous belt linear module 1; 3. Interlayer grinding work head; 4. Interlayer grinding work head fixture; 5. Coupling; 6. Z-axis synchronous belt linear module 2; 7. Welding gun; 8. Welding gun fixture; 9. Optical axis; 10. X-axis synchronous belt linear module mounting bracket; 11. Y-axis synchronous belt linear module 1; 12. Multi-axis motion controller; 13. Welding power supply; 14. Fixture; 15. Additive component; 16. Workbench; 17 , interlayer grinding work head controller; 18, Y-axis synchronous belt linear module 2; 19, bearing 1; 20, electric spindle housing; 21, stator; 22, spindle; 23, bearing 2; 24, upper coupling; 25, lower coupling; 26, interlayer grinding tool mounting tube; 27, elastic sleeve; 28, nut; 29, interlayer grinding tool; 30, gun neck; 31, welding wire; 32, insulating sleeve; 33, conductive nozzle mounting seat; 34, diverter ring; 35, conductive nozzle; 36, nozzle. DETAILED DESCRIPTION

[0039] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0040] Example 1

[0041] See also Figure 1 - Figure 5, a device for improving arc additive forming accuracy and microstructure refinement, comprising: an X-axis synchronous belt linear module 1, a Z-axis synchronous belt linear module 2, an interlayer grinding work head 3, an interlayer grinding work head fixture 4, a coupling 5, a Z-axis synchronous belt linear module 2 6, a welding gun 7, a welding gun fixture 8, an optical axis 9, an X-axis synchronous belt linear module mounting frame 10, a Y-axis synchronous belt linear module 1 11, a multi-axis motion controller 12, a welding power supply 13, a fixture 14, an additive part 15, a workbench 16, an interlayer grinding work head controller 17, a Y-axis synchronous belt linear module 2 18; an X-axis synchronous belt linear module 1, a Y-axis synchronous belt linear module 11, a Y-axis synchronous belt linear module 2 18, a Z-axis synchronous belt linear module 2 and a Z-axis synchronous belt linear module The linear module group 2 6 is provided with a sliding block, the interlayer grinding work head 3 is installed on the sliding block of the Z-axis synchronous belt linear module 2 through the interlayer grinding work head fixture 4, the interlayer grinding work head 3 is connected to the interlayer grinding work head controller 17 through a wire, the Z-axis synchronous belt linear module 2 is connected to the multi-axis motion controller 12 through a wire, the multi-axis motion controller 12 can control 1 to 6 axes, and each axis can be controlled by the multi-axis motion controller 12 separately, the multi-axis motion controller 12 can control the stepper motor, the multi-axis motion controller 12 can also control the servo motor, the multi-axis motion controller 12 has limit protection, the multi-axis motion controller 12 supports hard limit and soft limit, the welding gun 7 is installed on the Z-axis synchronous belt linear module 2 through the welding gun fixture 8 On the sliding block of the wire module group 2 6, the welding gun 7 is connected to the welding power supply 13 through a wire. The welding power supply 13 is equipped with a wire feeder for feeding the welding wire. The welding power supply 13 has a normal current waveform mode, a single pulse current waveform mode and a double pulse current waveform mode. The parameters that can be adjusted in the normal current waveform mode are the wire feeding speed, voltage and dynamic value. The parameters that can be adjusted in the single pulse current waveform mode are the wire feeding speed, the pulse current and the dynamic value of the pulse current reduction or increase curve. The parameters that can be adjusted in the double pulse current waveform mode are the wire feeding speed, pulse current, dynamic value, double pulse amplitude and double pulse frequency. The Z-axis synchronous belt linear module 2 6 is connected to the multi-axis motion controller 12 through a wire. The Z-axis synchronous belt linear module 1 2 is installed on the X-axis synchronous belt linear module 1 The step belt linear module 1 is mounted on the sliding block, the Z-axis synchronous belt linear module 2 6 is mounted on the sliding block of the X-axis synchronous belt linear module 1, the X-axis synchronous belt linear module 1 is mounted on the X-axis synchronous belt linear module mounting frame 10, the X-axis synchronous belt linear module mounting frame 10 is mounted on the sliding blocks of the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18, the Y-axis synchronous belt linear module 11 is connected to the Y-axis synchronous belt linear module 2 18 through the optical axis 9 and the coupling 5, the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 are mounted on the workbench 16, the motion stroke of the X-axis synchronous belt linear module 1, the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 is 1000mm,The motion stroke of the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 is 600mm, the X-axis synchronous belt linear module 1 is connected to the multi-axis motion controller 12 through a wire, the Y-axis synchronous belt linear module 11 is connected to the multi-axis motion controller 12 through a wire, the additive part 15 is installed on the workbench 16 through the fixture 14, the multi-axis motion controller 12 is turned on, and programming is performed through the multi-axis motion controller 12 to control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 1 Module 2 6 moves the interlayer grinding work head 3 and welding gun 7 to the specified starting position above the substrate of the additive part 15, turns on the interlayer grinding work head controller 17, determines the spindle speed of the interlayer grinding work head 3, and when the additive manufacturing work is completed, uses the multi-axis motion controller 12 to control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and welding gun 7 to a safe position away from the additive part 15, leaving enough working space for removing the additive part 15.

[0042] For further information, see Figure 1 - Figure 5 The rotation speed of the interlayer grinding work head 3 is less than or equal to 12000rpm, the diameter of the electric spindle housing 20 is 100mm to 170mm, and the interlayer grinding work head 3 also includes a bearing 19, an electric spindle housing 20, a stator 21, a spindle 22, a bearing 23, an upper coupling 24, a lower coupling 25, an interlayer grinding tool mounting tube 26, an elastic sleeve 27, a nut 28, and an interlayer grinding tool 29. The bearing 19 and the bearing 23 are mounted on the bearing seat of the electric spindle housing 20, and the spindle 22 is connected to the interlayer grinding tool 29 by a screw thread. The stator 21, bearing 19 and bearing 23 are installed inside the electric spindle housing 20. The stator 21 is provided with a cooling jacket. The spindle 22 is connected to the interlayer grinding tool mounting tube 26 through the upper coupling 24 and the lower coupling 25. The interlayer grinding tool 29 is installed in the elastic sleeve 27 and installed on the interlayer grinding tool mounting tube 26 through the nut 28. The X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 1 2 to drive the interlayer grinding work head 3 to perform interlayer grinding on the top of the manufactured additive deposition layer.

[0043] Further, see Figure 1 - Figure 5The welding gun 7 also includes a gun neck 30, a welding wire 31, an insulating sleeve 32, a conductive nozzle mounting seat 33, a diverter ring 34, a conductive nozzle 35, and a nozzle 36. The conductive nozzle 35 is mounted on the conductive nozzle mounting seat 33. The diverter ring 34 is sleeved on the conductive nozzle mounting seat 33 to play a role in shielding gas diversion. The insulating sleeve 32 is installed between the gun neck 30 and the nozzle 36. The welding wire 31 passes through the gun neck 30, the insulating sleeve 32, the conductive nozzle mounting seat 33, the conductive nozzle 35 and the nozzle 36. The welding gun 7 strikes an arc above the substrate of the additive part 15 to perform arc additive manufacturing. The interlayer grinding work head controller 17 clicks to start. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 2 6 to drive the welding gun 7 to move along the program-set path to lay the additive deposition layer.

[0044] Embodiment 2

[0045] A method for using a device for improving arc additive forming accuracy and microstructure refinement, using any one of the above-mentioned devices for improving arc additive forming accuracy and microstructure refinement, further comprising the following steps:

[0046] Step 1: remove the surface oxide film on the substrate of the additive component 15, and fix the substrate of the additive component 15 on the workbench 16 through the clamp 14;

[0047] Step 2: Turn on the multi-axis motion controller 12, program the multi-axis motion controller 12, control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and the welding gun 7 to the specified starting position above the substrate of the additive part 15;

[0048] Step 3: Turn on the welding power source 13 and determine welding parameters such as wire feeding speed and dynamic value;

[0049] Step 4: Turn on the interlayer grinding head controller 17 and determine the spindle speed of the interlayer grinding head 3;

[0050] Step 5: The welding gun 7 strikes an arc above the substrate of the additive part 15 to perform arc additive manufacturing. The interlayer grinding work head controller 17 clicks to start. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 2 6 to drive the welding gun 7 to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 1 2 to drive the interlayer grinding work head 3 to perform interlayer grinding on the top of the manufactured additive deposition layer.

[0051] Step 6: When one additive deposition layer is completed, the welding gun 7 needs to extinguish the arc first, and the interlayer grinding work head controller 17 is paused first, and then a new additive deposition layer is manufactured. The multi-axis motion controller 12 will control the X-axis synchronous belt linear module 1 through the program to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and the welding gun 7 to the specified starting position above the manufactured additive deposition layer;

[0052] Step 7: The welding gun 7 strikes an arc above the manufactured additive deposition layer, and the interlayer grinding work head controller 17 clicks to start. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 2 6 to drive the welding gun 7 to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 1 2 to drive the interlayer grinding work head 3 to perform interlayer grinding on the top of the manufactured additive deposition layer, and then the operation of step 6 is performed;

[0053] Step 8: When multiple layers of additive deposition are required, repeat the operations of steps 5, 6 and 7;

[0054] Step nine: When the additive manufacturing work is completed, use the multi-axis motion controller 12 to control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and the welding gun 7 to a safe position away from the additive part 15, leaving enough working space for removing the additive part 15, turn off the multi-axis motion controller 12, turn off the welding power supply 13, turn off the interlayer grinding work head controller 17, and the work is completed.

[0055] With the above structure, the working principle of this case is that after turning on the multi-axis motion controller 12, programming is performed through the multi-axis motion controller 12 to control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and the welding gun 7 to the specified starting position above the substrate of the additive part 15; after turning on the welding power supply 13, the welding parameters such as the wire feeding speed and the dynamic value are determined; after turning on the interlayer grinding work head controller 17, the spindle speed of the interlayer grinding work head 3 is determined.

[0056] The welding gun 7 strikes an arc above the substrate of the additive part 15 to perform arc additive manufacturing. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 2 6 to drive the welding gun 7 to move along the program-set path to lay the additive deposition layer. When one layer of additive deposition layer is completed, the welding gun 7 needs to extinguish the arc first; when the additive deposition layer is cooled to room temperature, the interlayer grinding work head controller 17 clicks to start, and the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 1 2 to drive the interlayer grinding work head 3 to perform interlayer grinding on the top of the manufactured additive deposition layer. After the interlayer grinding work is completed, the interlayer grinding work head controller 17 needs to click to pause and then manufacture a new additive deposition layer. The multi-axis motion controller 12 will control the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 through the program to move the interlayer grinding work head 3 and the welding gun 7 to the specified starting position above the manufactured additive deposition layer.

[0057] When multiple layers of additive deposition are required, the following operations are repeated. The welding gun 7 strikes an arc above the additive deposition layer that has been manufactured. At the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 2 6 to drive the welding gun 7 to move along the program-set path to lay the additive deposition layer. When one layer of additive deposition layer is completed, the welding gun 7 needs to extinguish the arc first; when the additive deposition layer is cooled to room temperature, the interlayer grinding work head controller 17 needs to click to start, and at the same time, the X-axis synchronous belt linear module 1 drives the Z-axis synchronous belt linear module 1 2 to drive the interlayer grinding work head 3 to perform interlayer grinding on the top of the additive deposition layer that has been manufactured. After the interlayer grinding work is completed, the interlayer grinding work head controller 17 needs to click to pause, and the multi-axis motion controller 12 will control the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 through the program to move the interlayer grinding work head 3 and the welding gun 7 to the specified starting position above the additive deposition layer that has been manufactured.

[0058] When the additive manufacturing work is completed, the multi-axis motion controller 12 is used to control the Y-axis synchronous belt linear module 11 and the Y-axis synchronous belt linear module 2 18 to drive the X-axis synchronous belt linear module 1 to drive the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6 to move the interlayer grinding work head 3 and the welding gun 7 to a safe position away from the additive part 15, leaving enough working space for removing the additive part 15, turn off the multi-axis motion controller 12, turn off the welding power supply 13, turn off the interlayer grinding work head controller 17, and the work is completed.

[0059] The beneficial effects are as follows: by utilizing the cooperation of the X-axis synchronous belt linear module 1, the Y-axis synchronous belt linear module 11, the Y-axis synchronous belt linear module 2 18, the Z-axis synchronous belt linear module 1 2 and the Z-axis synchronous belt linear module 2 6, the welding gun 7 and the interlayer grinding work head 3 can be driven under the control of the multi-axis motion controller 12 to manufacture three-dimensional arc additive parts of any shape, and the automation efficiency is higher; when the top of the additive manufacturing deposition layer undergoes interlayer grinding of a certain depth, the convex surface of the top of the deposition layer becomes a plane, which lays a planar foundation for the manufacture of subsequent new deposition layers, reduces the tendency of the liquid metal of the subsequent deposition layers to flow to both sides, and ensures the consistency of the height of the subsequent deposition layers; by performing interlayer grinding on the top of each deposition layer, the inter-crystalline grains are cut, the internal structure is refined, and the mechanical properties are improved.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A device for improving arc additive forming accuracy and microstructure refinement, characterized in that: include: X-axis synchronous belt linear module (1), Z-axis synchronous belt linear module 1 (2), interlayer grinding work head (3), interlayer grinding work head fixture (4), coupling (5), Z-axis synchronous belt linear module 2 (6), welding gun (7), welding gun fixture (8), optical axis (9), X-axis synchronous belt linear module mounting frame (10), Y-axis synchronous belt linear module 1 (11), multi-axis motion controller (12), welding power supply (13), fixture (14), additive component (15), workbench (16), interlayer grinding work head controller (17), Y-axis synchronous belt linear module 2 (18); The X-axis synchronous belt linear module (1), the Y-axis synchronous belt linear module 1 (11), the Y-axis synchronous belt linear module 2 (18), the Z-axis synchronous belt linear module 1 (2) and the Z-axis synchronous belt linear module 2 (6) are all provided with sliding blocks, the interlayer grinding work head (3) is installed on the sliding block of the Z-axis synchronous belt linear module 1 (2) through the interlayer grinding work head fixture (4), and the interlayer grinding work head (3) is connected to the interlayer grinding work head controller (17) through a wire. The Z-axis synchronous belt linear module (1) is connected to the multi-axis motion controller (12) through a wire, the welding gun (7) is installed on the sliding block of the Z-axis synchronous belt linear module (6) through a welding gun fixture (8), the welding gun (7) is connected to the welding power supply (13) through a wire, the Z-axis synchronous belt linear module (6) is connected to the multi-axis motion controller (12) through a wire, and the Z-axis synchronous belt linear module (1) is installed on the X-axis synchronous belt linear module (1). The Z-axis synchronous belt linear module (6) is mounted on the sliding block of the X-axis synchronous belt linear module (1), the X-axis synchronous belt linear module (1) is mounted on the X-axis synchronous belt linear module mounting frame (10), the X-axis synchronous belt linear module mounting frame (10) is mounted on the sliding blocks of the Y-axis synchronous belt linear module (11) and the Y-axis synchronous belt linear module (18), the Y-axis synchronous belt linear module (11) is connected to the optical axis (9) and the coupling ( 5) is connected to the Y-axis synchronous belt linear module 2 (18), the Y-axis synchronous belt linear module 1 (11) and the Y-axis synchronous belt linear module 2 (18) are installed on the workbench (16), the X-axis synchronous belt linear module (1) is connected to the multi-axis motion controller (12) through a wire, the Y-axis synchronous belt linear module 1 (11) is connected to the multi-axis motion controller (12) through a wire, and the additive component (15) is installed on the workbench (16) through a fixture (14).

2. The device for improving arc additive forming accuracy and microstructure refinement according to claim 1, characterized in that: The interlayer grinding work head (3) also includes a bearing 1 (19), an electric spindle housing (20), a stator (21), a spindle (22), a bearing 2 (23), an upper coupling (24), a lower coupling (25), an interlayer grinding tool mounting tube (26), an elastic sleeve (27), a nut (28), and an interlayer grinding tool (29). The bearing 1 (19) and the bearing 2 (23) are mounted on the bearing seat of the electric spindle housing (20). The spindle (22) is connected to the stator (21) via the stator (22). 1), bearing 1 (19) and bearing 2 (23) are installed inside the electric spindle housing (20), the stator (21) is provided with a cooling jacket, the spindle (22) is connected to the interlayer grinding tool mounting tube (26) through the upper coupling (24) and the lower coupling (25), the top end of the interlayer grinding tool (29) is installed inside the elastic jacket (27), and the outer wall of the interlayer grinding tool (29) is installed on the interlayer grinding tool mounting tube (26) through a nut (28).

3. The device for improving arc additive forming accuracy and microstructure refinement according to claim 2, characterized in that: The welding gun (7) further comprises a gun neck (30), a welding wire (31), an insulating sleeve (32), a conductive nozzle mounting seat (33), a diverter ring (34), a conductive nozzle (35), and a nozzle (36); the conductive nozzle (35) is mounted on the conductive nozzle mounting seat (33); the diverter ring (34) is sleeved on the conductive nozzle mounting seat (33); the insulating sleeve (32) is mounted between the gun neck (30) and the nozzle (36); and the welding wire (31) passes through the gun neck (30), the insulating sleeve (32), the conductive nozzle mounting seat (33), the conductive nozzle (35), and the nozzle (36).

4. The device for improving arc additive forming accuracy and microstructure refinement according to claim 3, characterized in that: The welding power source (13) is equipped with a wire feeder for feeding the welding wire, and the welding power source (13) has a normal current waveform mode, a single pulse current waveform mode and a double pulse current waveform mode.

5. The device for improving arc additive forming accuracy and microstructure refinement according to claim 4, characterized in that: The parameters that can be adjusted in the ordinary current waveform mode are wire feeding speed, voltage and dynamic value; the parameters that can be adjusted in the single pulse current waveform mode are wire feeding speed, pulse current (reduce or increase the pulse current of the curve) and dynamic value; the parameters that can be adjusted in the double pulse current waveform mode are wire feeding speed, pulse current, dynamic value, double pulse amplitude and double pulse frequency.

6. The device for improving arc additive forming accuracy and microstructure refinement according to claim 5, characterized in that: The multi-axis motion controller (12) can control 1 to 6 axes, and each axis can be independently controlled by the multi-axis motion controller (12). The multi-axis motion controller (12) can control a stepper motor, and the multi-axis motion controller (12) can also control a servo motor.

7. The device for improving arc additive forming accuracy and microstructure refinement according to claim 6, characterized in that: The multi-axis motion controller (12) has limit protection, and the multi-axis motion controller (12) supports hard limit and soft limit.

8. The device for improving arc additive forming accuracy and microstructure refinement according to claim 7, characterized in that: The rotation speed of the interlayer grinding work head (3) is less than or equal to 12000 rpm, and the diameter of the electric spindle housing (20) is 100 mm to 170 mm.

9. The device for improving arc additive forming accuracy and microstructure refinement according to claim 8, characterized in that: The movement stroke of the X-axis synchronous belt linear module (1), the Y-axis synchronous belt linear module one (11) and the Y-axis synchronous belt linear module two (18) is 1000 mm, and the movement stroke of the Z-axis synchronous belt linear module one (2) and the Z-axis synchronous belt linear module two (6) is 600 mm.

10. A method for using a device for improving arc additive forming accuracy and microstructure refinement, characterized in that: The device for improving arc additive forming accuracy and microstructure refinement according to any one of claims 1 to 9 further comprises the following steps: Step 1: removing the surface oxide film on the substrate of the additive component (15), and fixing the substrate of the additive component (15) on the workbench (16) by means of a clamp (14); Step 2: Turn on the multi-axis motion controller (12), program the multi-axis motion controller (12), control the Y-axis synchronous belt linear module 1 (11) and the Y-axis synchronous belt linear module 2 (18) to drive the X-axis synchronous belt linear module (1), which in turn drives the Z-axis synchronous belt linear module 1 (2) and the Z-axis synchronous belt linear module 2 (6) to move the interlayer grinding work head (3) and the welding gun (7) to a specified starting position above the substrate of the additive component (15); Step 3: Turn on the welding power supply (13) and determine welding parameters such as wire feeding speed and dynamic value; Step 4: Turn on the interlayer grinding head controller (17) and determine the spindle speed of the interlayer grinding head (3); Step 5: The welding gun (7) strikes an arc above the substrate of the additive part (15) to perform arc additive manufacturing. The interlayer grinding work head controller (17) clicks to start. At the same time, the X-axis synchronous belt linear module (1) drives the Z-axis synchronous belt linear module 2 (6) to drive the welding gun (7) to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module (1) drives the Z-axis synchronous belt linear module 1 (2) to drive the interlayer grinding work head (3) to perform interlayer grinding on the top of the manufactured additive deposition layer. Step 6: When one additive deposition layer is completed, the welding gun (7) needs to extinguish the arc first, and the interlayer grinding work head controller (17) is paused before the manufacture of a new additive deposition layer. The multi-axis motion controller (12) will control the X-axis synchronous belt linear module (1) through the program to drive the Z-axis synchronous belt linear module 1 (2) and the Z-axis synchronous belt linear module 2 (6) to move the interlayer grinding work head (3) and the welding gun (7) to the specified starting position above the manufactured additive deposition layer; Step 7: The welding gun (7) strikes an arc above the manufactured additive deposition layer, and the interlayer grinding work head controller (17) clicks to start. At the same time, the X-axis synchronous belt linear module (1) drives the Z-axis synchronous belt linear module 2 (6) to drive the welding gun (7) to move along the program-set path to lay the additive deposition layer. At the same time, the X-axis synchronous belt linear module (1) drives the Z-axis synchronous belt linear module 1 (2) to drive the interlayer grinding work head (3) to perform interlayer grinding on the top of the manufactured additive deposition layer, and then the operation of step 6 is performed; Step 8: When multiple layers of additive deposition are required, repeat the operations of steps 5, 6 and 7; Step 9: When the additive manufacturing work is completed, the multi-axis motion controller (12) is used to control the Y-axis synchronous belt linear module 1 (11) and the Y-axis synchronous belt linear module 2 (18) to drive the X-axis synchronous belt linear module (1), which in turn drives the Z-axis synchronous belt linear module 1 (2) and the Z-axis synchronous belt linear module 2 (6) to move the interlayer grinding work head (3) and the welding gun (7) to a safe position away from the additive part (15), leaving enough working space for removing the additive part (15), and then turn off the multi-axis motion controller (12), turn off the welding power supply (13), turn off the interlayer grinding work head controller (17), and the work is completed.

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