Motor shaft dissimilar material laser-arc hybrid welding device and method

Abstract

This invention discloses a laser-arc hybrid welding device and method for dissimilar materials used in motor shaft welding, specifically relating to the field of motor shaft welding. The device includes a processing table with a welding table mounted on one side. A fixture seat is detachably mounted on the processing table, with fixtures mounted at both ends. A pad is mounted on the fixture seat, and a shaft workpiece is detachably mounted on the pad. The shaft workpiece includes a shaft body one and a shaft body two, with a welded component welded between shaft body one and shaft body two. A keyway one is formed on the surface of shaft body one, and a water channel through hole one is formed on the welded component corresponding to the keyway. A keyway two is formed on the surface of shaft body two, and a water channel through hole two is formed on the welded component corresponding to the keyway two. This invention uses a filling component to fill and seal the water channel through holes one and two, preventing weld slag from entering the interior of the water channel through holes one and two during laser-arc hybrid welding. This effectively prevents weld slag from splashing in and causing coolant blockage and corrosion of the water channel inner wall during subsequent use of the shaft workpiece.

Description

Technical Field

[0001] This invention relates to the field of motor shaft welding technology, and more specifically, to a laser-arc composite welding device and method for dissimilar materials of motor shafts. Background Technology

[0002] As the core component for power transmission, the motor shaft is usually made of medium and high carbon steel / alloy steel such as No. 45 steel. The weld is required to have high strength (≥90% of the tensile strength of the base material), high toughness (impact energy ≥27J), low defect rate (no porosity / cracks / incomplete penetration), and must ensure that the coaxiality error after welding is ≤0.02mm (to avoid vibration during high-speed rotation).

[0003] Existing technologies employing laser-arc hybrid welding can combine the advantages of "high precision of laser + high filler capacity of arc", making them perfectly suited for scenarios such as butt welding of motor shafts and circumferential welding of shafts and flanges.

[0004] However, laser-arc hybrid welding produces weld slag sputtering, and the sputtering particles are finer. In order to achieve precise and efficient active heat dissipation, the motor shaft is usually designed with internal water channels, and water is circulated for heat dissipation through the water channel openings.

[0005] When the welding point of the motor shaft is close to the water channel through hole, small particles of sputtering can easily splash into the water channel through the through hole, which will subsequently cause problems such as coolant blockage and corrosion of the inner wall of the water channel, resulting in unqualified welding quality. Summary of the Invention

[0006] The present invention provides a laser-arc composite welding device and method for dissimilar materials of motor shaft. The problem to be solved is that in the existing laser-arc composite welding device, when the welding point of the motor shaft is close to the water channel through hole, the sputtered fine particles can easily splash into the water channel through the water channel through hole, which will subsequently cause problems such as coolant blockage and corrosion of the inner wall of the water channel, resulting in unqualified welding quality.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a laser-arc composite welding device for dissimilar materials of motor shafts, comprising a processing table, a welding table mounted on one side of the processing table, a fixture seat detachably mounted on the processing table, fixtures mounted at both ends of the fixture seat, a pad mounted on the fixture seat, and a shaft workpiece detachably mounted on the pad, the shaft workpiece comprising a shaft body one and a shaft body two, a welded component welded between shaft body one and shaft body two, a keyway one formed on the surface of shaft body one, a water channel through hole one formed on the welded component corresponding to the keyway, a keyway two formed on the surface of shaft body two, and a water channel through hole two formed on the welded component corresponding to the keyway two; a pad plate detachably mounted on the pad by bolts, a vertical support frame mounted on the pad plate, an mounting ring one mounted on the vertical support frame, an mounting ring two provided on one side of the mounting ring one, and a filling component mounted on both the mounting ring one and the mounting ring two, the filling component being used to fill the corresponding water channel through hole one and water channel through hole two.

[0008] In a preferred embodiment, a drive mechanism is installed on the welding table, and a composite welding mechanism is installed at the output end of the drive mechanism. A first welding point is provided in a ring between the welded part and the first shaft, and a second welding point is provided in a ring between the welded part and the second shaft.

[0009] In a preferred embodiment, a horizontal support frame is installed at the top of the vertical support frame, and a detection sensor is installed on the horizontal support frame.

[0010] In a preferred embodiment, a linear driver 1 is mounted on the transverse support frame, and the output end of the linear driver 1 is positioned and connected to the mounting ring 1. A linear driver 2 is mounted on the side of the mounting ring 1 away from the transverse support frame, and the output end of the linear driver 2 is positioned and connected to the mounting ring 2.

[0011] In a preferred embodiment, a first lifting plate is mounted on a first mounting ring, and a second lifting plate is mounted on a second mounting ring. Both the first and second mounting rings have annular grooves on their inner surfaces and guide holes on their outer surfaces. The filling assembly moves circumferentially along the annular grooves.

[0012] In a preferred embodiment, both the first and second lifting plates are fixedly provided with support legs, and the first lifting plate has a guide hole inside.

[0013] In a preferred embodiment, a guide post is passed through the guide hole, a toothed plate is fixedly provided on one side of the guide post, a drive block is installed on the lifting plate, a drive gear is installed inside the drive block, a limit block is provided on one side of the drive block, and the limit block and the drive block are respectively provided on both sides of the guide post.

[0014] In a preferred embodiment, a wire spool is installed on one side of the guide post, an electromagnetic block is positioned at the bottom of the guide post, and a power supply box is installed at the top of the guide post.

[0015] In a preferred embodiment, the filling component includes an outer side plate, a sealing gasket is detachably mounted on one side of the outer side plate, a limiting piece is fixedly provided on the side of the outer side plate away from the sealing gasket, a connecting post is fixedly provided on the limiting piece, and one end of the connecting post is slidably disposed inside the annular groove.

[0016] The present invention also provides a welding method for a laser-arc hybrid welding device for dissimilar materials of motor shafts, comprising the following steps:

[0017] S1: First, place the shaft workpiece on the pad, so that the welded part is located between mounting ring one and mounting ring two, and the welded part, mounting ring one and mounting ring two are located outside one end of the pad;

[0018] S2: The shaft workpiece is clamped and positioned by a fixture. When the shaft workpiece rotates and the keyway is detected by the detection sensor, the shaft workpiece stops rotating.

[0019] S3: First, drive the guide post to descend via the drive gear and toothed plate, then release the electromagnetic block from locking the sealing pad, allowing the sealing pad to enter the corresponding keyway one and keyway two, and then lift and reset the guide post;

[0020] S4: Start the linear actuator to push the mounting ring closer to the welded part through the lifting plate, so that the sealing gasket fills and seals the corresponding waterway through hole one and waterway through hole two;

[0021] S5: Welding point one and welding point two of the shaft workpiece by means of composite welding mechanism, so that the connecting column moves circumferentially along the corresponding annular groove until the laser arc composite welding of shaft body one, shaft body two and the welded parts is completed.

[0022] S6: Drive the guide column down via the drive gear to lift the sealing pad, so that the sealing pad is removed from the inside of the corresponding keyway one and keyway two, restore the power box to its original state, release the positioning of the fixture, and the shaft workpiece can be removed.

[0023] The beneficial effects of this invention are as follows:

[0024] This invention fills the sealed water channel through hole one and water channel through hole two with a filling component, which prevents welding slag from entering the interior of water channel through hole one and water channel through hole two during laser arc hybrid welding. This effectively prevents welding slag from splashing in and causing coolant blockage and corrosion of the inner wall of the water channel during subsequent use of the shaft workpiece. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the side structure of the pad block of the present invention.

[0027] Figure 3 This is a cross-sectional structural diagram of the mounting ring of the present invention.

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the shaft body of the present invention.

[0029] Figure 5 This is a schematic diagram of the two-dimensional structure of the shaft body of the present invention.

[0030] Figure 6 This is a schematic diagram of one end of the shaft of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure at both ends of the shaft of the present invention.

[0032] Figure 8This is a schematic diagram showing the installation position of the detection sensor of the present invention.

[0033] Figure 9 This is a three-dimensional structural diagram of the mounting ring of the present invention.

[0034] Figure 10 This is a schematic diagram of the guide column structure of the present invention.

[0035] Figure 11 This is a three-dimensional structural diagram of the filling component of the present invention.

[0036] Figure 12 This is a schematic diagram of the welding method of the present invention.

[0037] The attached figures are labeled as follows: 1. Machining table; 11. Fixture base; 12. Fixture; 2. Welding table; 21. Drive mechanism; 3. Pad block; 31. Pad plate; 4. Shaft workpiece; 41. Shaft body one; 411. Keyway one; 412. Water channel through hole one; 42. Shaft body two; 421. Keyway two; 422. Water channel through hole two; 43. Welded part; 431. Weld point one; 432. Weld point two; 5. Composite welding mechanism; 6. Vertical support frame; 61. Horizontal support frame; 62. Detection sensor; 63. Linear... 64. Linear Actuator 1; 7. Mounting Ring 1; 71. Lifting Plate 1; 711. Guide Hole; 72. Annular Groove; 73. Guide Hole; 74. Support Leg; 75. Guide Post; 751. Gear Plate; 752. Wire Spool; 753. Electromagnetic Block; 754. Power Supply Box; 76. Drive Block; 761. Drive Gear; 77. Limiting Block; 8. Mounting Ring 2; 81. Lifting Plate 2; 9. Filling Assembly; 91. Outer Side Plate; 92. Sealing Gasket; 93. Limiting Plate; 94. Connecting Post. Detailed Implementation

[0038] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0039] Refer to the instruction manual appendix Figures 1 to 7A laser-arc composite welding device for dissimilar materials of motor shafts includes a processing table 1, a welding table 2 mounted on one side of the processing table 1, a fixture seat 11 detachably mounted on the processing table 1, fixtures 12 mounted at both ends of the fixture seat 11, a pad 3 mounted on the fixture seat 11, and a shaft workpiece 4 detachably mounted on the pad 3. The shaft workpiece 4 includes a shaft body 41 and a shaft body 42, and a welded part 43 is welded between the shaft body 41 and the shaft body 42. A keyway 411 is formed on the surface of the shaft body 41, and the welded part 43 corresponds to the keyway 411. Eleven water channel through holes 412 are provided. A keyway 421 is provided on the surface of the shaft 42. A water channel through hole 422 is provided on the welded part 43 corresponding to the keyway 421. A pad 31 is detachably installed on the pad 3 by bolts. A vertical support frame 6 is installed on the pad 31. An installation ring 7 is installed on the vertical support frame 6. An installation ring 8 is provided on one side of the installation ring 7. A filling component 9 is installed on both the installation ring 7 and the installation ring 8. The filling component 9 is used to fill the corresponding water channel through holes 412 and 422.

[0040] It should be noted that the fixture 12 adopts the existing round shaft fixture, which can axially position both ends of the shaft workpiece 4. A rotary drive mechanism, such as a servo motor, is installed on the fixture base 11. The output end of the servo motor is connected to one end of the shaft workpiece 4, which can drive the shaft workpiece 4 to rotate. The water channel through hole 1 412 and the water channel through hole 2 422 are in corresponding positions. The mounting ring 1 7 and the mounting ring 2 8 are located on both sides of the welded part 43, respectively. The filling component 9 moves axially along the corresponding keyway 1 411 and keyway 2 421.

[0041] Refer to the instruction manual appendix Figures 1 to 3 A drive mechanism 21 is installed on the welding table 2. A composite welding mechanism 5 is installed at the output end of the drive mechanism 21. A weld point 431 is provided in a ring between the welded part 43 and the shaft 41, and a weld point 432 is provided in a ring between the welded part 43 and the shaft 42.

[0042] It should be noted that the drive mechanism 21 adopts the existing five-axis drive mechanism, which can drive the composite welding mechanism 5 to adjust its position.

[0043] Refer to the instruction manual appendix Figure 2 and Figure 8 A horizontal support frame 61 is installed at the top of the vertical support frame 6, and a detection sensor 62 is installed on the horizontal support frame 61.

[0044] It should be noted that the vertical support frame 6 and the horizontal support frame 61 are connected in an L-shaped structure, and the detection end of the detection sensor 62 corresponds to the keyway 411.

[0045] Refer to the instruction manual appendix Figure 3 and Figure 8A linear driver 63 is mounted on the transverse support frame 61, and the output end of the linear driver 63 is positioned and connected to the mounting ring 7. A linear driver 64 is mounted on the side of the mounting ring 7 away from the transverse support frame 61, and the output end of the linear driver 64 is positioned and connected to the mounting ring 8.

[0046] It should be noted that the inner diameters of mounting ring 7 and mounting ring 8 are greater than the maximum outer diameter of shaft workpiece 4. Linear actuator 63 drives mounting ring 7 to move laterally, and linear actuator 64 drives mounting ring 8 to move laterally.

[0047] Refer to the instruction manual appendix Figure 2 and Figure 3 A lifting plate 71 is installed on the first mounting ring 7, and a lifting plate 81 is installed on the second mounting ring 8. Both the first mounting ring 7 and the second mounting ring 8 have annular grooves 72 on their inner surfaces, and both the first mounting ring 7 and the second mounting ring 8 have guide holes 73 on their outer surfaces. The filling component 9 moves circumferentially along the annular grooves 72.

[0048] It should be noted that the cross-section of the annular groove 72 is concave, and the guide hole 73 is connected to the annular groove 72.

[0049] Refer to the instruction manual appendix Figure 9 and Figure 10 Both the first lifting plate 71 and the second lifting plate 81 are fixedly equipped with support legs 74, and the first lifting plate 71 has a guide hole 711 inside.

[0050] It should be noted that the support leg 74 is connected to the corresponding linear actuator 63 and linear actuator 64, and the guide hole 711 corresponds to the guide hole 73.

[0051] Refer to the instruction manual appendix Figure 10 A guide post 75 passes through the inside of the guide hole 711. A toothed plate 751 is fixedly provided on one side of the guide post 75. A drive block 76 is installed on the lifting plate 71. A drive gear 761 is installed inside the drive block 76. A limit block 77 is provided on one side of the drive block 76. The limit block 77 and the drive block 76 are respectively located on both sides of the guide post 75.

[0052] It should be noted that the drive gear 761 is driven by a motor and meshes with the toothed plate 751. A smooth wheel is rotatably mounted on the limit block 77, which plays the role of rolling and abutting the limit.

[0053] Refer to the instruction manual appendix Figure 10 A wire drum 752 is installed on one side of the guide post 75, an electromagnetic block 753 is positioned and installed at the bottom of the guide post 75, and a power supply box 754 is installed at the top of the guide post 75.

[0054] It should be noted that the power supply box 754 has its own controller and independent power supply, the wire drum 752 is used for wiring, and the electromagnetic block 753 can attract and position iron components when energized.

[0055] Refer to the instruction manual appendix Figure 11 The filling component 9 includes an outer side plate 91, a sealing gasket 92 is detachably installed on one side of the outer side plate 91, a limiting piece 93 is fixedly provided on the side of the outer side plate 91 away from the sealing gasket 92, a connecting post 94 is fixedly provided on the limiting piece 93, and one end of the connecting post 94 is slidably disposed inside the annular groove 72.

[0056] It should be noted that the outer side plate 91 moves axially along the corresponding keyway 411 and water channel through hole 412, the sealing gasket 92 slides inside the corresponding keyway 411 and water channel through hole 412, the diameter of the limiting piece 93 is greater than the width of the annular groove 72, and the connecting column 94 is an iron component.

[0057] In this embodiment, the specific implementation scenario is as follows: First, the shaft workpiece 4 is placed on the pad 31. Shaft body 1 41 passes through mounting ring 1 7, shaft body 2 42 passes through mounting ring 1 7 and mounting ring 2 8, and welded part 43 is located between mounting ring 1 7 and mounting ring 2 8. Welded part 43, mounting ring 1 7 and mounting ring 2 8 are located outside one end of the pad 31. The shaft workpiece 4 is clamped and positioned by the clamp 12, and the shaft workpiece 4 is rotated by the servo motor. When the detection sensor 62 detects keyway 1 411, the shaft workpiece 4 stops rotating and is in the initial position. In the original state, the power supply box 754 attracts and positions the connecting post 94 through the electromagnetic block 753, so that the sealing gasket 92 At a distance from the corresponding shaft 41 and shaft 42, after the shaft workpiece 4 is in its initial position, the guide post 75 is first driven to descend via the drive gear 761 and gear plate 751. Then, the electromagnetic block 753 is released from locking the sealing gasket 92, allowing the sealing gasket 92 to enter the interior of the corresponding keyway 411 and keyway 421. The outer side plate 91 slides against the exterior of the corresponding keyway 411 and keyway 421. Finally, the guide post 75 is lifted and reset. The linear actuator 63 is activated to push the mounting ring 7 closer to the welded part 43 via the lifting plate 71. The linear actuator 64 drives the mounting ring 8 closer to the welded part 43. The connecting post 94... The outer side plate 91 and the sealing gasket 92 are brought closer to the welded part 43, so that the sealing gasket 92 fills and seals the corresponding water channel through hole 412 and water channel through hole 422. The composite welding mechanism 5 welds the first weld point 431 and the second weld point 432 of the shaft workpiece 4. At the same time, the shaft workpiece 4 rotates at a uniform speed, and drives the filling assembly 9 to rotate synchronously, so that the connecting column 94 moves circumferentially along the corresponding annular groove 72 until the laser arc composite welding of the shaft body 41, the shaft body 42 and the welded part 43 is completed. During unloading, the guide column 75 is driven to descend by the drive gear 761, and the mounting ring 7 is moved away from the welded part 43 by the linear actuator 63. 64 drives the mounting ring 2 8 away from the welded part 43, and the electromagnetic block 753 is energized to attract and position the connecting column 94. Then, the sealing gasket 92 is lifted, so that the sealing gasket 92 is removed from the inside of the corresponding keyway 1 411 and keyway 2 421. The power box 754 is restored to its original state, and the positioning of the clamp 12 is released to remove the shaft workpiece 4. The whole can be filled and sealed by the filling component 9 to prevent the water channel through hole 1 412 and water channel through hole 2 422 from entering the inside of the water channel through hole 1 412 and water channel through hole 2 422 during laser arc composite welding. This effectively prevents the welding slag from splashing in and causing coolant blockage and water channel inner wall corrosion during subsequent use of the shaft workpiece 4.

[0058] Working principle:

[0059] First, place the shaft workpiece 4 on the pad 31. Shaft body 41 passes through mounting ring 7, shaft body 42 passes through mounting ring 7 and mounting ring 8, and welded part 43 is located between mounting ring 7 and mounting ring 8. Welded part 43, mounting ring 7 and mounting ring 8 are located outside one end of the pad 31.

[0060] Second, the positioning shaft workpiece 4 is clamped by the fixture 12 and rotated by the servo motor. When the detection sensor 62 detects the keyway 411, the shaft workpiece 4 stops rotating and is in the initial position.

[0061] Third, the guide post 75 is driven to descend by the drive gear 761 and the toothed plate 751. Then, the electromagnetic block 753 is released from locking the sealing pad 92, so that the sealing pad 92 enters the interior of the corresponding keyway 1 411 and keyway 2 421. The outer plate 91 slides against the outside of the corresponding keyway 1 411 and keyway 2 421. Finally, the guide post 75 is lifted and reset.

[0062] 4. Start the linear actuator 63 to push the mounting ring 7 close to the welded part 43 through the lifting plate 71, and drive the mounting ring 8 close to the welded part 43 through the linear actuator 64. Drive the outer plate 91 and the sealing gasket 92 close to the welded part 43 through the connecting column 94, so that the sealing gasket 92 fills and seals the corresponding waterway through hole 412 and waterway through hole 422.

[0063] 5. The composite welding mechanism 5 is used to weld the first welding point 431 and the second welding point 432 of the shaft workpiece 4. At the same time, the shaft workpiece 4 rotates at a constant speed and drives the filling component 9 to rotate synchronously, so that the connecting column 94 moves circumferentially along the corresponding annular groove 72 until the laser arc composite welding of the shaft body 41, the shaft body 42 and the welded part 43 is completed.

[0064] 6. Drive the guide column 75 down via the drive gear 761, drive the mounting ring 7 away from the welded part 43 via the linear actuator 63, drive the mounting ring 8 away from the welded part 43 via the linear actuator 64, energize the electromagnetic block 753 to attract and position the connecting column 94, then lift the sealing pad 92 to move the sealing pad 92 out of the corresponding keyway 411 and keyway 421, restore the power box 754 to its original state, release the positioning of the clamp 12 and remove the shaft workpiece 4.

[0065] Refer to the instruction manual appendix Figure 12 The present invention also provides a welding method for a laser-arc hybrid welding device for dissimilar materials of motor shafts, comprising the following steps:

[0066] S1: First, place the shaft workpiece 4 on the pad 31, so that the welded part 43 is located between the mounting ring 7 and the mounting ring 8, and the welded part 43, the mounting ring 7 and the mounting ring 8 are located outside one end of the pad 31.

[0067] S2: The positioning shaft workpiece 4 is clamped by the fixture 12. When the shaft workpiece 4 rotates and the keyway 411 is detected by the detection sensor 62, the shaft workpiece 4 stops rotating.

[0068] S3: First, drive the guide post 75 to descend via the drive gear 761 and toothed plate 751, then release the electromagnetic block 753 from locking the sealing pad 92, so that the sealing pad 92 enters the interior of the corresponding keyway 1 411 and keyway 2 421, and lift the guide post 75 to reset.

[0069] S4: Start the linear actuator 63 to push the mounting ring 7 close to the welded part 43 through the lifting plate 71, so that the sealing gasket 92 fills and seals the corresponding waterway through hole 412 and waterway through hole 422.

[0070] S5: Welding point 431 and point 432 of the shaft workpiece 4 by the composite welding mechanism 5, so that the connecting column 94 moves circumferentially along the corresponding annular groove 72 until the laser arc composite welding of shaft 41, shaft 42 and welded part 43 is completed.

[0071] S6: Drive the guide post 75 down by driving the drive gear 761, lift the sealing pad 92, and move the sealing pad 92 out from the inside of the corresponding keyway 1 411 and keyway 2 421. Return the power box 754 to its original state, release the positioning of the clamp 12, and the shaft workpiece 4 can be removed.

[0072] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A laser-arc composite welding device for dissimilar materials of motor shafts, comprising a processing table (1), a welding table (2) mounted on one side of the processing table (1), a fixture seat (11) detachably mounted on the processing table (1), fixtures (12) mounted at both ends of the fixture seat (11), a pad (3) mounted on the fixture seat (11), and a shaft workpiece (4) detachably mounted on the pad (3), characterized in that: The shaft workpiece (4) includes a shaft body one (41) and a shaft body two (42). A welded part (43) is welded between the shaft body one (41) and the shaft body two (42). A keyway one (411) is provided on the surface of the shaft body one (411). A water channel through hole one (412) is provided on the welded part (43) corresponding to the keyway one (411). A keyway two (421) is provided on the surface of the shaft body two (421). A water channel through hole two (422) is provided on the welded part (43) corresponding to the keyway two (421). A pad (31) is detachably mounted on the pad block (3) by bolts. A vertical support frame (6) is mounted on the pad plate (31). An installation ring one (7) is mounted on the vertical support frame (6). An installation ring two (8) is provided on one side of the installation ring one (7). A filling component (9) is mounted on both the installation ring one (7) and the installation ring two (8). The filling component (9) is used to fill the corresponding water channel through hole one (412) and water channel through hole two (422). The first mounting ring (7) is equipped with a first lifting plate (71), and the second mounting ring (8) is equipped with a second lifting plate (81). The inner surfaces of the first mounting ring (7) and the second mounting ring (8) are provided with annular grooves (72). The outer surfaces of the first mounting ring (7) and the second mounting ring (8) are provided with guide holes (73). The filling component (9) moves circumferentially along the annular grooves (72).

2. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 1, characterized in that: The welding table (2) is equipped with a drive mechanism (21), and the output end of the drive mechanism (21) is equipped with a composite welding mechanism (5). A welding point (431) is provided in a ring between the welding part (43) and the shaft (41), and a welding point (432) is provided in a ring between the welding part (43) and the shaft (42).

3. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 2, characterized in that: A horizontal support frame (61) is installed at the top of the vertical support frame (6), and a detection sensor (62) is installed on the horizontal support frame (61).

4. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 3, characterized in that: Linear driver 1 (63) is installed on the transverse support frame (61), and the output end of linear driver 1 (63) is positioned and connected to mounting ring 1 (7). Linear driver 2 (64) is installed on the side of mounting ring 1 (7) away from the transverse support frame (61), and the output end of linear driver 2 (64) is positioned and connected to mounting ring 2 (8).

5. A laser-arc composite welding device for dissimilar materials of motor shafts according to any one of claims 1-4, characterized in that: Both the first lifting plate (71) and the second lifting plate (81) are fixedly provided with support legs (74), and the first lifting plate (71) has a guide hole (711) inside.

6. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 5, characterized in that: A guide post (75) passes through the inside of the guide hole (711). A toothed plate (751) is fixedly provided on one side of the guide post (75). A drive block (76) is installed on the lifting plate (71). A drive gear (761) is installed inside the drive block (76). A limiting block (77) is provided on one side of the drive block (76). The limiting block (77) and the drive block (76) are respectively located on both sides of the guide post (75).

7. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 6, characterized in that: A wire spool (752) is installed on one side of the guide post (75), an electromagnetic block (753) is positioned at the bottom of the guide post (75), and a power supply box (754) is installed at the top of the guide post (75).

8. The laser-arc composite welding device for dissimilar materials of motor shafts according to claim 7, characterized in that: The filling component (9) includes an outer plate (91), a sealing pad (92) is detachably installed on one side of the outer plate (91), a limiting piece (93) is fixedly provided on the side of the outer plate (91) away from the sealing pad (92), a connecting post (94) is fixedly provided on the limiting piece (93), and one end of the connecting post (94) is slidably disposed inside the annular groove (72).

9. A welding method for a laser-arc hybrid welding device for dissimilar materials of a motor shaft as described in claim 8, characterized in that, Includes the following steps: S1: First, place the shaft workpiece (4) on the pad (31) so that the welded part (43) is located between the first mounting ring (7) and the second mounting ring (8), and the welded part (43), the first mounting ring (7) and the second mounting ring (8) are located outside one end of the pad (31); S2: The positioning shaft workpiece (4) is clamped by the fixture (12). When the shaft workpiece (4) rotates and the keyway (411) is detected by the detection sensor (62), the shaft workpiece (4) stops rotating. S3: First, drive the guide post (75) to descend by driving the drive gear (761) and tooth plate (751), then release the electromagnetic block (753) from locking the sealing pad (92), so that the sealing pad (92) enters the interior of the corresponding keyway one (411) and keyway two (421), and lift the guide post (75) to reset. S4: Start the linear actuator (63) to push the mounting ring (7) close to the weldment (43) through the lifting plate (71), so that the sealing gasket (92) fills and seals the corresponding waterway through hole one (412) and waterway through hole two (422). S5: Welding point 1 (431) and welding point 2 (432) of the shaft workpiece (4) is performed by the composite welding mechanism (5), so that the connecting column (94) moves circumferentially along the corresponding annular groove (72) until the laser arc composite welding of shaft body 1 (41), shaft body 2 (42) and welded part (43) is completed; S6: Drive the guide column (75) down by driving the drive gear (761) to lift the sealing pad (92), so that the sealing pad (92) is removed from the inside of the corresponding keyway one (411) and keyway two (421), restore the power box (754) to its original state, and release the positioning of the clamp (12) to remove the shaft workpiece (4).

Images