Five-axis laser cladding additive remanufacturing device

Abstract

The utility model discloses a five-axis laser cladding additive remanufacturing device which comprises laser equipment, a laser cladding water cooling system, a mechanical arm system and a machining platform, and a laser cladding equipment control platform is located outside a laser machining chamber where the laser cladding equipment is located; the laser equipment is mounted at the front end of the mechanical arm multi-axis moving mechanism; the water cooling system is mounted at the left front part of the processing platform according to space movement during laser cladding; the mechanical arm fixes the laser equipment at the tail end of the mechanical arm through bolts and is positioned on the right side of the processing platform; supporting legs are installed at the bottom of the machining platform, and the machining platform is located below the laser equipment. The laser cladding device has the characteristics of wide cladding material selection range, capability of realizing multi-degree-of-freedom additive manufacturing, high precision, high cladding speed, capability of quickly disassembling and replacing the laser head and the like, and meanwhile, a water cooling system is additionally arranged in the laser head, so that the laser head is prevented from being burnt out in the working process, the continuity of the manufacturing process is improved, and the production efficiency is improved. And the processing efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of additive remanufacturing, and in particular to a five-axis laser cladding additive remanufacturing device. Background Art

[0002] Additive manufacturing technology is a rapid prototyping technology based on computer design and layer-by-layer stacking. It is different from traditional subtractive processing. It is based on digital model files and uses bondable metal powders or polymers and other materials to print and stack layer by layer to build objects. With the development of the manufacturing industry and the continuous improvement of the level of equipment automation control, additive manufacturing technology has been widely used in biomedicine, industrial equipment production, aerospace and other fields. In the field of laser manufacturing, additive manufacturing technology has become one of the important means to make machine parts and equipment, automotive parts, molds, repair damaged parts, enhance the surface performance of parts or change the surface material performance of parts.

[0003] Laser cladding technology is a widely used additive manufacturing method. This method uses metal or non-metallic materials as raw materials, sprays the materials from the nozzle through pressure, and melts the materials by irradiating them with high-energy laser beams, and then performs additive manufacturing on the surface of the parts, or performs surface modification of the materials. It can also manufacture the required parts by stacking the materials layer by layer. The advantages of the three-axis high-speed laser cladding additive remanufacturing device are simple operation, low equipment maintenance cost, and good continuity of the additive process. The manufacturing speed and molding quality can be controlled by controlling the spot diameter of the laser head and the powder feeding speed, so as to achieve fine manufacturing.

[0004] The laser cladding additive remanufacturing devices currently on the market have the following defects:

[0005] (1) Most laser cladding additive manufacturing machines are mainly used for parts printing. They adopt a prefabrication method. The accumulation of metal materials has a certain delay, which is not conducive to high-speed processing of materials. It is easy to cause nozzle clogging and reduce the cladding quality, which greatly reduces the selection range of cladding materials.

[0006] (2) The laser heads of most laser cladding additive manufacturing machines on the market cannot achieve multiple degrees of freedom. Generally, the laser heads are placed on the machine tools, which makes it impossible for the equipment to process some complex curved surfaces. Since the processing power that can be achieved by the laser heads of some laser cladding additive manufacturing machines is relatively small, some materials that require ultra-high temperature melting cannot be melted or the cladding effect is poor, affecting the overall accuracy and morphology. At the same time, when the laser head burns out, the entire laser head is usually scrapped, resulting in unnecessary waste of resources. Utility Model Content

[0007] In order to solve the deficiencies of the above-mentioned prior art, the utility model proposes a five-axis high-speed laser cladding additive remanufacturing device, which has the characteristics of a wide range of cladding material selection, can realize additive manufacturing with multiple degrees of freedom, high precision, fast cladding speed, and the laser head can be quickly disassembled and replaced. At the same time, a water cooling system is installed in the laser head, which improves the continuity of the manufacturing process while ensuring that the laser head will not overheat and burn during operation, thereby greatly improving the processing efficiency.

[0008] The utility model is realized through the following technical scheme: a five-axis high-speed laser cladding additive remanufacturing device, comprising a laser device, a laser cladding water cooling system, a mechanical arm system and a processing platform, wherein the laser cladding device control platform is located outside the laser processing room where the laser cladding device is located; the laser device is installed at the front end of the mechanical arm multi-axis moving mechanism; the laser cladding water cooling system is installed at the left front of the processing platform; the mechanical arm fixes the laser device to the end of the mechanical arm by bolts and is located on the right side of the processing platform; a supporting foot is installed at the bottom of the processing platform, and an anti-slip pad is installed at the lower part of the supporting foot, and the processing platform is located below the laser device.

[0009] Preferably, the laser equipment is composed of a laser generator, a laser cavity, a lock buckle, a link buckle, a laser head and a powder feeding channel; the laser generator is composed of a laser generating device and a housing; the laser head is composed of a focusing lens, a powder feeding channel and a laser head.

[0010] Preferably, the laser cladding water cooling system consists of a cooling water tank, a condensation water inlet pipe, a small water pump, and a condensation water outlet pipe; the cooling water tank is respectively equipped with a condensation water inlet pipe and a condensation water outlet pipe; the left part of the laser head is provided with a condensation water inlet pipe; the right part of the laser head is provided with a condensation water outlet pipe; the condensation water inlet pipe and the condensation water outlet pipe are uniformly installed on the upper part of the cooling water tank.

[0011] Preferably, the robotic arm system consists of a robotic arm base, a 360° rotating device, a first-level connecting mechanism, a first-level robotic arm, a second-level connecting mechanism, a second-level robotic arm, a third-level connecting mechanism, a third-level robotic arm and a laser equipment clamping device; the robotic arm base is rigidly connected to the rotating table and installed in a parallel relationship; the first-level connecting mechanism is installed on the upper part of the rotating table; the first-level connecting mechanism connects the first-level robotic arm to the base and is installed in a vertical relationship with the first-level connecting mechanism; the second-level connecting mechanism connects the second-level robotic arm to the first-level robotic arm and is installed in a vertical relationship with the second-level connecting mechanism; the third-level connecting mechanism connects the third-level robotic arm to the second-level robotic arm and is installed in a vertical relationship with the third-level connecting mechanism; the laser head clamping device is installed at the end of the third-level robotic arm and is installed in a vertical relationship with the laser head.

[0012] Preferably, the processing platform consists of a cladding platform, a platform bracket and a bracket stabilizing rod; the cladding platform is located on the upper part of the bracket and is vertically connected to the bracket; the platform bracket is located directly below the cladding platform and supports the cladding platform from four corners; the bracket stabilizing rod is located in the middle of the bracket to connect the brackets together.

[0013] The utility model is beneficial in that it has the characteristics of wide selection of cladding materials, long-term laser cladding operation, high cladding surface precision and uniform powder spraying. By connecting the laser equipment to the end of the mechanical arm through the mechanical arm, and connecting the laser head to cold water through the condensation water inlet pipe and the condensation water outlet pipe, the laser head can achieve long-term and stable laser cladding processing and manufacturing; the coaxial powder feeding method greatly improves the accuracy of laser cladding during accumulation, reduces the precision error in the vertical direction, and greatly improves the printing efficiency; and fully extends the service life of the laser head of the laser cladding equipment and its compatibility with the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0015] Figure 2 This is a front view of an embodiment of the utility model;

[0016] Figure 3 A side view of an embodiment of the utility model;

[0017] Figure 4 The figure is a schematic diagram of the structure of a laser head in one embodiment of the utility model.

[0018] In the above figure:

[0019] 1. Condensation water inlet pipe; 2. Condensation water outlet pipe; 3. Laser generator; 4. Cold water tank cover; 5. Cooling water tank; 6. Laser cavity; 7. Robot arm No. 1 fastening screw; 8. Robot arm No. 2 fastening screw; 9. Primary connecting ring; 10. Connecting screw; 11. Secondary connecting ring; 12. Laser head; 13. Clamping device; 14. Third-level robot arm; 15. Secondary left robot arm; 16. Third-level connecting mechanism; 17. Secondary right robot arm; 18. Secondary connecting mechanism ; 19. First-level robotic arm; 20. First-level connecting mechanism; 21. Rotating table; 22. Base; 23. Cladding platform; 24. Platform bracket; 25. First bracket stabilizing rod; 26. Second bracket stabilizing rod; 27. First-level connecting ring No. 1 screw; 28. Clamping device connecting screw; 29. ​​First-level connecting ring No. 2 screw; 30. Second-level connecting ring No. 1 screw; 31. Second-level connecting ring No. 2 screw; 32. Third bracket stabilizing rod; 33. Fourth bracket stabilizing rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] Example 1

[0022] Reference Figure 1-4 A five-axis laser cladding additive remanufacturing device comprises a processing platform, a laser device, a water cooling system and a robotic arm, wherein the processing platform is arranged directly below the laser device, so as to enable better and more convenient work during the cladding process, and prevent the flow of the molten pool caused by the tilt during the cladding process; the laser device is clamped by a robotic arm clamping device 13, so as to ensure that it can work at multiple angles; the robotic arm is installed on the right side of the cladding platform 23 according to the spatial movement during the cladding work; the water cooling system is connected to the laser head 12 through a condensing water pipe, so as to ensure that the laser head can work for a long time and continuously, and prevent the laser head from overheating and burning; a platform bracket 24 is installed at the bottom of the cladding platform 23, and a first bracket stabilizing rod 25, a second bracket stabilizing rod 26, a third bracket stabilizing rod 32 and a fourth bracket stabilizing rod 33 are installed in the middle of the platform bracket 24, so that the cladding platform 23 is in a horizontal position, so as to ensure the verticality between the cladding platform 23 and the cladding powder.

[0023] The water cooling system is composed of a cooling water tank 5, a condensing water inlet pipe 1, a condensing water outlet pipe 2, and a cold water tank cover 4; the cooling water tank 5 is respectively equipped with a condensing water inlet pipe 1 and a condensing water outlet pipe 2; the water cooling system cools the laser head 12 by circulating water, thereby improving the cladding efficiency and extending the service life.

[0024] The mechanical arm is composed of a clamping device 13, a three-stage mechanical arm 14, a two-stage left mechanical arm 15, a three-stage connecting mechanism 16, a two-stage right mechanical arm 17, a two-stage connecting mechanism 18, a first-stage mechanical arm 19, a first-stage connecting mechanism 20, a rotating table 21, a base 22, a first mechanical arm fastening screw 7, a second mechanical arm fastening screw 8, and a clamping device connecting screw 28; the clamping device 13 is connected to the end of the three-stage mechanical arm 14 to ensure that the clamping device can move at multiple angles; the three-stage mechanical arm 14 is rigidly connected to the two-stage left mechanical arm 15 and the two-stage right mechanical arm 17 and is installed in a vertical relationship with the three-stage connecting mechanism 16 to ensure that the three-stage mechanical arm is in motion Verticality; the secondary left robot arm 15 and the secondary right robot arm 17 are installed on the upper part of the primary robot arm 19 through the secondary connecting mechanism 18, ensuring the verticality of the movement of the primary robot arm and the secondary robot arm; the primary robot arm 19 is rigidly connected to the rotating table 21 through the primary connecting mechanism 20, ensuring that the robot arm can move in the vertical direction while also ensuring the movement of the robot arm in the circumferential direction; the base 22 is arranged below the rotating table 21; the robot arm No. 1 fastening screw 7 and the robot arm No. 2 fastening screw 8 fix the laser head at the end of the robot arm to prevent the laser head from sliding due to gravity, thereby improving the safety of the use of the laser cladding device.

[0025] The laser device is composed of a laser generator 3, a laser cavity 6, a primary connecting ring 9, a connecting screw 10, a secondary connecting ring 11, a laser head 12, a primary connecting ring No. 1 screw 27, a primary connecting ring No. 2 screw 29, a secondary connecting ring No. 1 screw 30, and a secondary connecting ring No. 2 screw 31; the laser generator 3 is installed above the laser cavity 6, and a part of the cavity is placed in the laser generator 3 to ensure that no light leakage occurs when the laser generator 3 is working; a primary connecting ring 9 is installed at the lower part of the laser cavity 6, and a secondary connecting ring 11 is installed at the lower part of the primary connecting ring 9; the laser cavity 6 ensures that the laser can pass through and reach the laser head smoothly, and ensures that the laser can be at the specified position during cladding. The laser head 12 is connected to the secondary connecting ring 11 through the secondary connecting ring No. 1 screw 30 and the secondary connecting ring No. 2 screw 31 to ensure that the laser head can remain stable during operation.

[0026] The processing platform is composed of a cladding platform 23, a platform bracket 24, a first bracket stabilizing rod 25, a second bracket stabilizing rod 26, a third bracket stabilizing rod 32, and a fourth bracket stabilizing rod 33; the cladding platform 23 is perpendicular to the platform bracket 24; the first bracket stabilizing rod 25, the second bracket stabilizing rod 26, the third bracket stabilizing rod 32, and the fourth bracket stabilizing rod 33 are installed in the middle of the platform bracket 24, and the bracket stabilizing rods and the platform bracket cooperate with each other to improve the stability of the processing platform; V-shaped grooves are designed on both sides of the cladding platform 23. During laser cladding, the V-shaped grooves can collect powder blown out by the protective gas, and can be used to collect residual powder after the cladding is completed to prevent environmental pollution.

[0027] Working principle: before the cladding work starts, first start the water cooling system, then start the laser generator 3, wait until the laser spot is seen on the cladding platform 23, and the cladding work is ready; fill the material into the powder feeding system, and connect the protective gas in the powder feeding system; connect one end to the laser head 12, and spray the powder from the powder feeding channel to the cladding position through the protective gas; import the designed path into the cladding system, and then start the cladding movement.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A five-axis laser cladding additive remanufacturing device, comprising a laser device, a laser cladding water cooling system, a robotic arm system and a processing platform, characterized in that: The laser equipment is arranged directly above the control processing platform; the laser cladding water cooling system is installed at the left front of the processing platform and is connected to the laser head (12); the robotic arm system is installed on the right side of the cladding platform (23) according to the spatial movement during the cladding operation; a platform bracket (24) is installed at the bottom of the cladding platform (23), and a first bracket stabilizing rod (25), a second bracket stabilizing rod (26), a third bracket stabilizing rod (32), and a fourth bracket stabilizing rod (33) are installed in the middle of the platform bracket (24), so that the cladding platform (23) is in a horizontal position, thereby ensuring the verticality of the cladding platform (23) and the cladding powder.

2. A five-axis laser cladding additive remanufacturing device according to claim 1, characterized in that: The laser device comprises a laser generator (3), a laser cavity (6), a primary connecting ring (9), connecting screws (10), a secondary connecting ring (11), a laser head (12), a primary connecting ring No. 1 screw (27), a primary connecting ring No. 2 screw (29), a secondary connecting ring No. 1 screw (30), and a secondary connecting ring No. 2 screw (31); the laser device is clamped by a mechanical arm clamping device (13); the primary connecting ring (9) and the secondary connecting ring (11) are installed between the laser cavity (6) and the laser head (12) to connect the two; the laser generator (3) is installed above the laser cavity (6); and the laser head (12) is connected below the secondary connecting ring (11).

3. The five-axis laser cladding additive remanufacturing device according to claim 1 is characterized in that: The water cooling system is composed of a cooling water tank (5), a condensing water inlet pipe (1), a condensing water outlet pipe (2), and a cooling water tank cover (4); the cooling water tank (5) is respectively provided with a condensing water inlet pipe (1) and a condensing water outlet pipe (2); and the upper part of the laser head (12) is connected with a condensing water pipe.

4. A five-axis laser cladding additive remanufacturing device according to claim 1, characterized in that: The mechanical arm comprises a clamping device (13), a three-stage mechanical arm (14), a two-stage left mechanical arm (15), a three-stage connecting mechanism (16), a two-stage right mechanical arm (17), a two-stage connecting mechanism (18), a first-stage mechanical arm (19), a first-stage connecting mechanism (20), a rotating platform (21), a base (22), a first mechanical arm fastening screw (7), a second mechanical arm fastening screw (8), and a clamping device connecting screw (28); the clamping device (13) is connected to the end of the three-stage mechanical arm (14). The third-level mechanical arm (14) is rigidly connected to the second-level left mechanical arm (15) and the second-level right mechanical arm (17) and is installed in a vertical relationship with the third-level connecting mechanism (16); the second-level left mechanical arm (15) and the second-level right mechanical arm (17) are installed on the upper part of the first-level mechanical arm (19) through the second-level connecting mechanism (18); the first-level mechanical arm (19) is rigidly connected to the rotating platform (21) through the first-level connecting mechanism (20); and the base (22) is arranged below the rotating platform (21).

5. A five-axis laser cladding additive remanufacturing device according to claim 4, characterized in that: The robotic arm and laser equipment clamp the laser cavity (6) via a clamping device (13), and fix the laser cladding laser head to the end of the robotic arm via a clamping device connecting screw (28), a robotic arm No. 1 fastening screw (7), and a robotic arm No. 2 fastening screw (8).

6. The five-axis laser cladding additive remanufacturing device according to claim 1, characterized in that: The processing platform is composed of a cladding platform (23), a platform bracket (24), a first bracket stabilizing rod (25), a second bracket stabilizing rod (26), a third bracket stabilizing rod (32), and a fourth bracket stabilizing rod (33); the cladding platform (23) is perpendicular to the platform bracket (24); the first bracket stabilizing rod (25), the second bracket stabilizing rod (26), the third bracket stabilizing rod (32), and the fourth bracket stabilizing rod (33) are installed in the middle of the platform bracket (24); an anti-slip pad is installed at the bottom of the platform bracket (24); and V-shaped grooves are designed on both sides of the cladding platform (23).

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