Eight-axis automatic surfacing welding system for large workpiece surface additive manufacturing

Abstract

The utility model discloses an eight-axis automatic surfacing welding system for large workpiece surface additive manufacturing. The eight-axis automatic surfacing welding system comprises a control module, and a trolley guide rail, a full-servo welding cross-shaped operation frame, a servo electric tilting device, a Y / Z-axis direction cross-shaped sliding frame, a welding gun infinite rotating mechanism and a deep hole channel surfacing welding gun mechanism which are connected with the control module through a circuit, the trolley guide rail comprises a linear guide rail and a trolley; and the surfacing requirements of large workpieces are met. Due to the fact that the sizes of all the shafts of the system are large, it is guaranteed that the strokes of all the shafts are long, and the system can meet the surfacing requirements of large workpieces due to the fact that the guide rails with the length of 12 meters are arranged. And the equipment is high in surfacing precision and efficiency. And welding automation is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline inner wall surfacing operations, and in particular relates to an eight-axis automatic surfacing system for additive manufacturing of large workpiece surfaces. Background Art

[0002] In the nuclear power industry, the key materials of nuclear power equipment have excellent comprehensive performance. However, due to working in special environments such as high temperature and high radiation, equipment and component failures due to corrosion, especially stress corrosion, are not uncommon. It is usually necessary to perform cladding welding on the inner walls of pipes in common corrosion-prone locations. After cladding, the corrosion resistance of the locations is greatly improved under the protection of the welding materials. However, the equipment in the nuclear power industry is usually large in size, and common corrosion-prone locations usually have more complex surfaces. For equipment that performs cladding welding on complex surfaces, when cladding large workpieces, each axis may be at the limit of its travel, which may cause jitter and affect the quality of the cladding. At the same time, for existing complex surface cladding equipment, due to the complexity of the cladding surface, the axes of the cladding equipment are usually manually adjusted, which has a low degree of automation and affects the accuracy and efficiency of the cladding. Summary of the Invention

[0003] The technical problem to be solved by the present utility model is to provide an eight-axis automatic surfacing welding system for additive manufacturing of large workpiece surfaces, which realizes automated surfacing welding operations for complex surfaces of large workpieces, such as holes in series, inclined holes in series with straight holes, runway-shaped holes in series, square holes in series, elbow surfacing, and straight cylinder automatic indexing vertical straight seam surfacing, thereby expanding the surfacing range of the workpiece while ensuring the accuracy and efficiency of the surfacing welding equipment.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: an eight-axis automatic surfacing welding system for additive manufacturing of large workpiece surfaces, comprising a control module, a trolley guide rail connected to the control module circuit, a full-servo welding cross operating frame, a servo electric tilting device, a Y / Z-axis cross slide, a welding gun infinite rotation mechanism, and a deep-hole surfacing gun mechanism;

[0005] The trolley guide rail is composed of a linear guide rail and a trolley, and the trolley is fixedly installed with an electric control cabinet, a power supply, a distribution box fixing bracket, a data station terminal and a water tank;

[0006] The full-servo welding cross operating frame is composed of a column and a crossbeam. The column is fixedly mounted on the trolley. A linear transmission mechanism is provided on the column. The crossbeam is fixedly mounted on the first slide at the execution end of the linear transmission mechanism.

[0007] The servo electric tilt device consists of a connecting plate, a planetary reducer, a reducer, a corner box and a servo motor. The corner box is fixedly mounted on the end of the beam, the reducer is fixedly mounted on the corner box, the planetary reducer is fixedly mounted on the reducer, the servo motor is fixedly mounted on the planetary reducer, and the connecting plate is rotatably mounted on the front end of the reducer, and the connecting plate is driven to rotate by the reducer;

[0008] The Y / Z-axis cross slide is composed of a Z-axis slide and a Y-axis slide to form a bidirectional transmission mechanism, a slide plate is fixedly installed on the execution end of the Y-axis slide, and the Z-axis slide is fixedly installed on the connecting plate;

[0009] The infinite rotation mechanism of the welding gun is composed of an X-axis sliding drive device, an angle connection member, an angle adjustment device and a water, electricity and gas rotary head. The water, electricity and gas rotary head is rotatably mounted on the slide plate and is connected by gear meshing transmission. The X-axis sliding drive device is fixedly mounted on the water, electricity and gas rotary head. The angle connection member is fixedly mounted on the execution end of the X-axis sliding drive device. The angle connection member is rotatably mounted with a first gear. The angle adjustment device is rotatably mounted on the X-axis sliding drive device. The second gear on the drive shaft of the angle adjustment device is meshed and connected to the first gear on the angle connection member.

[0010] The deep hole surfacing gun mechanism consists of a welding gun bracket and a welding gun body. The welding gun bracket is fixedly mounted on the mounting plate of the angle adjustment device, and the welding gun body is fixedly mounted on the welding gun bracket. A welding wire reel, a high-frequency protective cover and a wire feeder are also fixedly mounted on the welding gun bracket.

[0011] Preferably, a safety anti-fall ladder is fixedly installed on the column.

[0012] Preferably, both the Z-axis slide and the Y-axis slide are provided with accordion shields.

[0013] Preferably, the connecting plate and the angle adjustment device are respectively provided with a first rotation angle scale and a second rotation angle scale.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1. Meet the requirements of cladding welding for large workpieces. Due to the large size of each axis of this system, the stroke of each axis is guaranteed to be long. In addition, it is equipped with a 12-meter-long guide rail, which makes this system able to meet the requirements of cladding welding for large workpieces.

[0016] 2. The equipment has high cladding precision and high efficiency. This system adopts electric adjustment for the axis of adjusting the tilt angle of the equipment for complex surface cladding, which can be controlled by PLC and the tilt angle can be displayed in the PLC, improving the precision and automation of the cladding equipment and completing the cladding of complex surfaces more accurately.

[0017] 3. High welding automation. The electric axis movement of the entire system can be precisely controlled by PLC, and cooperated with the truss gripper and other automatic loading and unloading mechanisms to achieve fully automatic unmanned welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] Figure 2 It is a structural diagram of the trolley guide rail.

[0021] Figure 3 This is a structural diagram of a full servo welding cross operating frame.

[0022] Figure 4 It is a structural diagram of a servo electric tilt device.

[0023] Figure 5 It is a schematic diagram of the cross slide structure in the Y / Z axis direction.

[0024] Figure 6 It is a schematic diagram of the structure of the infinite rotation mechanism of the welding gun.

[0025] Figure 7 It is a schematic diagram of the structure of the deep hole cladding gun mechanism.

[0026] Figure 8 This is a schematic diagram of the installation structure of the Z-axis slide and the connecting plate. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with specific embodiments:

[0028] like Figures 1 to 8 The eight-axis automatic cladding system for additive manufacturing of large workpiece surfaces shown in the figure includes a control module, a trolley guide rail 1, a full-servo welding cross operating frame 2, a servo electric tilting device 3, a Y / Z-axis cross slide, a welding gun infinite rotation mechanism 5, and a deep-hole cladding gun mechanism 6 connected to the control module circuit; the control module is a PLC control module;

[0029] The trolley guide rail 1 consists of a linear guide rail 10 and a trolley 11. The trolley 11 is fixedly mounted with an electrical control cabinet 12, a power supply 13, a distribution box mounting bracket 14, a data station terminal 15, and a water tank 16. The system rail is 12 meters long, and the movement of the trolley 11 on the linear guide rail 10 is driven by an AC motor. Before welding begins, the trolley 11 can be controlled to move to a specified position. The electrical control cabinet 12, power supply 13, and distribution box mounting bracket 14 provide power supply, the data station terminal 15 is used for operational control, and the water tank 16 is used to cool the welding gun body 65 during the buildup welding operation.

[0030] The fully servo welding cross-operation frame 2 consists of a column 21 and a crossbeam 22. The column 21 is fixedly mounted on the trolley 11 and equipped with a linear transmission mechanism. The crossbeam 22 is fixedly mounted on a first slide 23 at the actuator end of the linear transmission mechanism. Both the column 21 and the crossbeam 22 are driven by Siemens servo motors through the meshing of gears and racks. The column 21 has a lifting stroke of up to 6 meters, while the crossbeam 22 has a telescopic stroke of up to 4 meters.

[0031] The servo electric tilting device 3 is composed of a connecting disk 31, a planetary reducer 32, a reducer 33, a corner box 34 and a servo motor 35. The corner box 34 is fixedly mounted on the end of the beam 22, the reducer 33 is fixedly mounted on the corner box 34, the planetary reducer 32 is fixedly mounted on the reducer 33, and the servo motor 35 is fixedly mounted on the planetary reducer 32. The connecting disk 31 is rotatably mounted on the front end of the reducer 33, and the connecting disk 31 is driven to rotate by the reducer 33; the servo electric tilting device 3 is tilted by the rotating head of the Siemens servo motor 35, and the rotation of the connecting disk 31 will drive the Y / Z axis cross slide 4 installed on the connecting disk to tilt a certain angle, and the tilt angle range is ±45°. The servo electric tilting device 3 can be controlled by a PLC, and the tilt angle can be displayed in the PLC.

[0032] The Y / Z-axis cross slide 4 comprises a Z-axis slide 41 and a Y-axis slide 42, forming a bidirectional transmission mechanism. A slide plate 43 is fixedly mounted on the actuating end of the Y-axis slide 42, while the Z-axis slide 41 is fixedly mounted on the connecting plate 31. The bidirectional transmission mechanism is driven by a Siemens motor via a pulley and a lead screw. The cross slide has a travel range of 1000 mm in the Y-axis direction and 200 mm in the Z-axis direction.

[0033] The infinite rotation mechanism 5 of the welding gun is composed of an X-axis sliding drive device 51, a corner connection member 52, an angle adjustment device 53 and a water, electricity and gas rotating head 54. The water, electricity and gas rotating head 54 is rotatably mounted on the slide plate 43 and is connected through gear meshing transmission. The water, electricity and gas rotating head 54 is controlled to rotate by a driving motor, so that the infinite rotation movement of the welding gun can be realized. The X-axis sliding drive device 51 is fixedly mounted on the water, electricity and gas rotating head 54, and the corner connection member 52 is fixedly mounted on the execution end of the X-axis sliding drive device 51. The corner connection member 52 is rotatably mounted with a first gear, and the angle adjustment device 53 is rotatably mounted on the X-axis sliding drive device 51. The second gear on the driving shaft of the angle adjustment device 53 is meshed and transmitted with the first gear on the corner connection member 52; the X-axis sliding drive device 51 mainly realizes the function of adjusting the diameter of the welding gun, is driven by a Siemens servo motor, and is transmitted through a pulley and a screw. The radius can be automatically controlled during the buildup welding process, and the workpiece inner hole buildup diameter range can reach 20-500mm. The angle adjustment device 53 can be manually rotated to a certain angle, thereby driving the welding gyro to rotate the corresponding angle to adapt to different welding angles and positions, completing the automated buildup welding operation of complex structures.

[0034] The deep hole welding gun mechanism 6 consists of a welding gun bracket 61 and a welding gun body 65. The welding gun bracket 61 is fixedly mounted on the mounting plate of the angle adjustment device 53. The welding gun body 65 is fixedly mounted on the welding gun bracket 61. A welding wire reel 62, a high-frequency protective cover 63 and a wire feeder 64 are also fixedly mounted on the welding gun bracket 61. The welding wire reel 62 and the wire feeder 64 realize the welding wire feeding function, and the high-frequency protective cover 63 plays a protective role.

[0035] A safety anti-fall ladder 24 is also fixedly mounted on the column 21, and the safety anti-fall structure design ensures safety protection during the maintenance process.

[0036] The Z-axis slide 41 and the Y-axis slide 42 are both provided with an accordion shield 44 for protection.

[0037] The connecting plate 31 and the angle adjustment device 53 are respectively provided with a first rotation angle scale 310 and a second rotation angle scale to facilitate determination of the angle position during manual rotation adjustment.

Claims

1. An eight-axis automatic surfacing system for additive manufacturing of large workpiece surfaces, characterized by: It includes a control module, a trolley guide rail (1) connected to the control module circuit, a full servo welding cross operating frame (2), a servo electric tilting device (3), a Y / Z axis direction cross slide (4), a welding gun infinite rotation mechanism (5) and a deep channel welding gun mechanism (6); The trolley guide rail (1) is composed of a linear guide rail (10) and a trolley (11), and an electric control cabinet (12), a power supply (13), a distribution box fixing frame (14), a data station terminal (15) and a water tank (16) are fixedly installed on the trolley (11); The full-servo welding cross operating frame (2) is composed of a column (21) and a crossbeam (22), wherein the column (21) is fixedly mounted on the trolley (11), a linear transmission mechanism is provided on the column (21), and the crossbeam (22) is fixedly mounted on a first slide (23) at the execution end of the linear transmission mechanism; The servo electric tilting device (3) is composed of a connecting disk (31), a planetary reducer (32), a reducer (33), a corner box (34) and a servo motor (35), wherein the corner box (34) is fixedly mounted on the end of the crossbeam (22), the reducer (33) is fixedly mounted on the corner box (34), the planetary reducer (32) is fixedly mounted on the reducer (33), the servo motor (35) is fixedly mounted on the planetary reducer (32), and the connecting disk (31) is rotatably mounted on the front end of the reducer (33), and the connecting disk (31) is driven to rotate by the reducer (33); The Y / Z-axis cross slide (4) is composed of a Z-axis slide (41) and a Y-axis slide (42) to form a bidirectional transmission mechanism, a slide plate (43) is fixedly mounted on the execution end of the Y-axis slide (42), and the Z-axis slide (41) is fixedly mounted on the connecting plate (31); The welding gun infinite rotation mechanism (5) is composed of an X-axis direction sliding drive device (51), an angle connection member (52), an angle adjustment device (53) and a water, electricity and gas rotary head (54), wherein the water, electricity and gas rotary head (54) is rotatably mounted on the slide plate (43) and is connected by gear meshing transmission, the X-axis direction sliding drive device (51) is fixedly mounted on the water, electricity and gas rotary head (54), the angle connection member (52) is fixedly mounted on the execution end of the X-axis direction sliding drive device (51), the angle connection member (52) is rotatably mounted with a first gear, the angle adjustment device (53) is rotatably mounted on the X-axis direction sliding drive device (51), and the second gear on the driving shaft of the angle adjustment device (53) is meshed and connected with the first gear on the angle connection member (52); The deep channel welding gun mechanism (6) consists of a welding gun bracket (61) and a welding gun body (65), wherein the welding gun bracket (61) is fixedly mounted on a mounting plate of an angle adjustment device (53), and the welding gun body (65) is fixedly mounted on the welding gun bracket (61). A welding wire reel (62), a high-frequency protective cover (63) and a wire feeder (64) are also fixedly mounted on the welding gun bracket (61).

2. The eight-axis automatic surfacing welding system for additive manufacturing of large workpiece surfaces according to claim 1 is characterized in that: A safety anti-fall ladder (24) is also fixedly mounted on the column (21).

3. The eight-axis automatic surfacing welding system for additive manufacturing of large workpiece surfaces according to claim 1 is characterized in that: The Z-axis slide (41) and the Y-axis slide (42) are both provided with an accordion shield (44).

4. The eight-axis automatic surfacing welding system for additive manufacturing of large workpiece surfaces according to claim 1 is characterized in that: A first rotation angle scale (310) and a second rotation angle scale are respectively provided on the connecting disk (31) and the angle adjustment device (53).

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