A welding fixture for turbine shell machining

Abstract

The application discloses a welding clamp for turbine shell machining and belongs to the technical field of turbocharger machining, which comprises a rotating disc and adjustable welding clamping mechanisms uniformly distributed along the circumference of the rotating disc, wherein the adjustable welding clamping mechanisms comprise a fixed rack, a movable base, an inner support clamping assembly for clamping the turbine shell, an adjustable limiting assembly for positioning the turbine shell air inlet end face, and an adjustable poking assembly for pushing the turbine shell to rotate. The welding clamp for turbine shell machining can realize automatic and rapid positioning of the turbine shell, facilitates welding of the rocker arm, and can be adapted to turbine shells of different models.

Description

Technical Field

[0001] This invention belongs to the field of turbocharger processing technology, specifically referring to a welding fixture for turbine housing processing. Background Technology

[0002] As a core component of the turbocharger, the turbine housing's structural design and manufacturing quality directly affect engine performance. Turbochargers equipped with bypass valves can significantly improve vehicle power performance at low speeds, specifically by increasing low-speed torque, reducing fuel consumption and pollutant emissions, while also helping to improve engine performance and reliability at high speeds.

[0003] In turbocharger production, the welding of the turbine housing rocker arm is a critical process with strict requirements for welding quality. This involves not only the fit clearance between the rocker arm and the bushing but also the precise control of the rocker arm angle. Currently, the turbine housing needs to be positioned and fixed before welding. However, existing welding fixtures mostly rely on manual loading and positioning, requiring operators to manually adjust the clamping angle of the turbine housing to ensure the rocker arm is horizontal for welding. This process is labor-intensive and time-consuming, and difficult to automate. Furthermore, due to structural differences between different turbine housing models, the angle between the rocker arm and the intake port end face varies accordingly. Existing welding fixtures lack sufficient adaptability and cannot meet the welding processing requirements of different turbine housing models. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a welding fixture for turbine housing processing, which can realize automatic and rapid positioning of turbine housing to facilitate welding of rocker arms, and can be adapted to different models of turbine housing.

[0005] The technical solution adopted by this invention is as follows: This invention provides a welding fixture for turbine housing processing, comprising a turntable and adjustable welding clamping mechanisms evenly distributed along the circumference of the turntable. The adjustable welding clamping mechanism includes a fixed frame, a movable base, an internal support clamping assembly for clamping the turbine housing, an adjustable limiting assembly for positioning the turbine housing's air inlet end face, and an adjustable actuating assembly for driving the turbine housing to rotate. The fixed frame is mounted on the turntable, and the movable base is slidably mounted on the turntable radially. A driving mechanism is provided between the movable base and the fixed frame. A sliding drive for the sliding base is provided. A flip plate is rotatably provided on the upper end of the sliding base. A flip drive is provided between the flip plate and the sliding base to switch the flip plate between a horizontal and a vertical state. An inner support clamping assembly is rotatably provided on the flip plate. An adjustable limiting assembly is provided on one side of the fixed frame and the sliding base. An adjustable actuating assembly is rotatably provided on the flip plate. An adjustable actuating assembly is rotatably provided outside the inner support clamping assembly. When the flip plate is in the vertical state, the adjustable actuating assembly and the inner support clamping assembly are coaxially arranged.

[0006] Preferably, the adjustable actuation assembly includes an actuation ring seat, an actuation disk, a radial adjustment assembly, and an actuation post. The actuation ring seat is rotatably mounted on the side wall of the flip plate, and the actuation disk is coaxially fixed to the outside of the actuation ring seat. The inner support clamping assembly passes through the central shaft of the actuation ring seat and the actuation disk. The actuation disk has an adjustment groove along the radial direction, and the radial adjustment assembly is located in the adjustment groove. The radial adjustment assembly has an actuation seat, and the actuation post is located on the side wall of the actuation seat. The axis of the actuation post is parallel to the axis of the actuation ring seat. The flip plate has a self-locking drive for driving the rotation of the actuation ring seat. The radial adjustment assembly adjusts the distance from the actuation seat to the circumferential side wall of the actuation ring seat, thereby adjusting the diameter of the rotation trajectory of the actuation post. This causes the rotation trajectory of the actuation post to interfere with the turbine housing, so that when the actuation ring seat rotates, it drives the turbine housing to rotate.

[0007] Preferably, a feeding pressure sensor is provided on the side of the actuation disk near the fixed frame, which facilitates the detection of whether a turbine housing is placed on the actuation disk.

[0008] More specifically, the radial adjustment assembly includes a screw, a guide rod, and a connecting plate disposed at the ends of the screw and the guide rod. The screw and the guide rod are rotatably disposed in the adjustment groove. The screw is rotatably connected to the actuating disk. The actuating seat is slidably disposed on the screw and the guide rod. The actuating seat is threadedly connected to the screw. By rotating the screw, the actuating seat is driven to move along the screw and the guide rod, thereby adjusting the distance from the actuating seat to the axis of the actuating disk.

[0009] Preferably, an angle sensor is provided between the toggle ring seat and the flip plate, which facilitates the detection of the rotation angle of the toggle disc.

[0010] Preferably, the side wall of the connecting plate is provided with a screwing part that is fixedly connected to the screw, so that the screw can be rotated easily through the screwing part.

[0011] As a further improvement to this solution, the actuating column includes a fixed column and an adjusting sleeve that is slidably sleeved on the outside of the fixed column. The fixed column is located on the side wall of the actuating seat, and the end of the fixed column is provided with a sliding hole. A locking column is symmetrically slidably arranged in the sliding hole, and a push spring is provided between the locking columns. The inner wall of the adjusting sleeve is provided with a locking groove, and the locking groove is evenly distributed along the length direction of the adjusting sleeve. The fixed column and the adjusting sleeve are positioned by locking the locking column into the locking groove. The length of the actuating column can be adjusted by pulling the adjusting sleeve.

[0012] Preferably, the outer side of the adjusting sleeve is covered with a flexible anti-slip sleeve to increase the friction between the actuating column and the turbine housing.

[0013] The internally supported clamping assembly includes a clamping base, a sliding disk, a push-pull rod, a clamping slide, and a clamping member. The clamping base is rotatably mounted on a flip plate and has a clamping drive cavity inside. The sliding disk is located within the clamping drive cavity and is slidably and sealingly connected to the clamping drive cavity. The sidewall of the clamping base is circumferentially arrayed with clamping sliding holes, which are radially arranged along the clamping base. The clamping slide is slidably disposed within the clamping sliding holes. The clamping member is located on the side of the clamping slide away from the clamping drive cavity. The push-pull rod is located within the clamping drive cavity. The sidewall of the sliding disk is circumferentially arrayed with clamping sliding holes. The assembly is equipped with hinged seats. One end of the push-pull rod is hinged to the hinged seat, and the other end of the push-pull rod is hinged to the clamping slide. The hinged seats, push-pull rods, clamping slides, and clamping sliding holes correspond one-to-one. The side of the flip plate away from the fixed frame is equipped with a clamping drive that drives the sliding disk to slide along the clamping base axially. The internal support clamping assembly is rotatably connected to the clamping drive. The clamping drive drives the sliding disk to slide along the clamping base axially. The sliding disk drives the clamping slide along the clamping sliding hole through the push-pull rod, thereby driving multiple sets of clamping components to move synchronously along the clamping base radially, moving closer or further away from each other, to achieve internal support and fixation of the turbine housing.

[0014] Preferably, the length of the actuating disc from the side away from the flip plate to the flip plate is equal to the length of the clamping base from the side away from the flip plate to the flip plate, so that the side wall of the actuating disc is flush with the side wall of the clamping base.

[0015] Preferably, the side of the clamping member away from the axis of the clamping base is arc-shaped, and a clamping pressure sensor is provided on the side of the clamping member away from the axis of the clamping base. The clamping pressure sensor facilitates the detection of whether the clamping member is in contact with the side wall of the turbine housing outlet, thereby facilitating the determination of whether the internal support is stable.

[0016] Preferably, the clamping member is provided with an anti-slip pad on the side away from the clamping base axis, the clamping pressure sensor is located between the anti-slip pad and the side wall of the clamping member, and the anti-slip pad is provided with wavy anti-slip protrusions.

[0017] Preferably, the outer wall of the sliding disk is provided with a sealing ring, which enables the sliding disk and the clamping drive cavity to slide and seal together.

[0018] More specifically, the clamping drive includes a drive seat and a clamping electric push rod. The drive seat is fixedly disposed on the side wall of the flip plate and is rotatably connected to the clamping base. The clamping electric push rod is disposed on the side wall of the drive seat. The moving end of the clamping electric push rod is rotatably connected to the sliding disk. The extension and retraction of the clamping electric push rod drives the sliding disk to slide along the axial direction of the clamping base.

[0019] The flipping drive includes a flipping electric actuator. The movable base has symmetrical mounting seats at one end near the fixed frame. The bottom end of the flipping plate has a flipping shaft, which is rotatably connected to the mounting seats. The movable base has a mounting groove. One end of the flipping electric actuator is hinged to the bottom wall of the mounting groove, and the other end is hinged to the side wall of the flipping plate. A mounting hole is provided through the flipping plate. The internal support clamping assembly is rotatably positioned within the mounting hole. The extension and retraction of the flipping electric actuator drives the flipping plate to switch between a horizontal and vertical state.

[0020] Preferably, a fine-tuning positioning assembly is provided on the side of the fixed frame near the movable base. The fine-tuning positioning assembly includes a linear displacement drive, a positioning base, a positioning turntable, and a friction plate. The linear displacement drive is located on the side wall of the fixed frame, the positioning base is located at the end of the linear displacement drive, and the positioning turntable is slidably located on the side of the positioning base away from the linear displacement drive. A fine-tuning spring is provided between the positioning base and the positioning turntable, and the friction plate is located between the positioning base and the positioning turntable. Initially, the linear displacement drive retracts, and the fine-tuning spring pushes the positioning turntable, causing the positioning turntable to engage with the positioning base. There is a gap between them, at which time the friction plate and the positioning turntable do not contact each other, and the positioning turntable can rotate freely. The side wall of the positioning turntable is equipped with a positioning pressure sensor. After the turbine housing air inlet end face is attached to the adjustable limiting component, the linear drive drives the positioning base to move closer to the positioning turntable, so that the positioning turntable and the turbine housing side wall are more tightly attached. When the friction plate is tightly clamped between the positioning turntable and the positioning base, the friction plate uses friction to brake the positioning turntable, so that the positioning turntable cannot rotate and the positioning turntable cannot move along the axial direction, thus firmly clamping and fixing the turbine housing.

[0021] Furthermore, the adjustable limiting assembly includes an electric push rod one, an adjusting slide, a limiting seat, a limiting side plate, and an electric push rod two. The upper wall of the turntable is provided with an adjusting slide groove, which is perpendicular to the sliding drive. The adjusting slide is slidably connected to the adjusting slide groove. The electric push rod one is located on the upper wall of the turntable, and its output end is connected to the adjusting slide and drives the adjusting slide to slide along the adjusting slide groove. The limiting seat is located inside the adjusting slide. The top end of the limiting side plate is rotatably connected to the end of the limiting seat near the fixed frame. The two ends of the electric push rod two are respectively hinged to the limiting side plate and the limiting seat. By extending and retracting the electric push rod two, the limiting side plate is driven to rotate around the limiting seat, thereby adjusting the tilt angle of the limiting side plate so that the limiting side plate is parallel to the turbine housing inlet end face. The electric push rod one drives the adjusting slide to slide along the adjusting slide groove, adjusting the distance from the limiting side plate to the turbine housing inlet end face, which can adapt to different models of turbine housings. The side wall of the limiting side plate is provided with a limiting pressure sensor.

[0022] Preferably, the limiting seat is slidably connected to the adjusting slide, the sliding direction of the limiting seat is parallel to the sliding direction of the moving base, and a spring is provided between the limiting seat and the adjusting slide. The spring makes the limiting seat always maintain the tendency to slide towards the moving base. When the moving base moves closer to the fixed frame, the flip plate can push the limiting seat to slide accordingly, avoiding interference between the limiting side plate and the flip plate or the moving base.

[0023] Preferably, the adjusting slide includes an adjusting base, a sleeve, a sliding plate, and a top frame. The top frame is arranged in an inverted U-shape, and guide rods are arranged in an array inside the top frame. The limiting seat is slidably connected to multiple sets of guide rods. The spring is disposed between the limiting seat and the top frame. The adjusting base is slidably connected to the adjusting groove. The sleeve is symmetrically disposed on the adjusting base. The sliding plate is slidably disposed inside the sleeve. The sleeve sidewall is threaded with a clamping bolt. Pulling the sleeve and the sliding plate facilitates the adjustment of the top frame height. The clamping bolt clamps the sliding plate, thereby fixing the sliding plate and the sleeve.

[0024] The self-locking drive includes a drive motor, a worm gear, a worm, and a rotating gear. A rotating gear ring is coaxially provided on the outer side of the actuating ring seat. The rotating gear is rotatably located on the side of the flip plate near the actuating disk and meshes with the rotating gear ring. The worm and worm gear are rotatably located on the side of the flip plate away from the actuating disk and mesh with the worm gear. The drive motor is located on the side wall of the flip plate, and the output end of the drive motor is connected to the worm. The worm gear and rotating gear are coaxially fixed. The helix angle of the worm is smaller than the friction angle between the worm gear and the worm.

[0025] The drive motor drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the rotating gear to rotate, the rotating gear drives the rotating gear ring to rotate, and the rotating gear ring drives the actuating ring seat to rotate. When the helix angle of the worm is less than the friction angle between the worm wheel and the worm, the friction will prevent the worm wheel from reversing. The worm wheel and worm mechanism has self-locking properties, which can effectively prevent reversing and facilitate more stable and reliable clamping and limiting of the turbine housing.

[0026] Preferably, the fixed frame is equipped with a controller, which is electrically connected to the clamping pressure sensor, the limit pressure sensor, the positioning pressure sensor, the feeding pressure sensor, the clamping electric push rod, the flipping electric push rod, the sliding drive, the line shifting drive, and the drive motor.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows:

[0028] 1. The welding fixture provided by this invention, when used in conjunction with an automatic feeder, can automate the feeding, attitude adjustment, and clamping and fixing of turbine housings, thereby reducing labor intensity.

[0029] 2. By combining the adjustable toggle assembly and the adjustable limit assembly, high-precision positioning and automatic angle adjustment of the turbine housing attitude can be achieved, ensuring that the rocker arm welding surface is always in a horizontal state and the welding quality is stable and reliable.

[0030] 3. The turbine housing is precisely clamped and positioned by the combination of the internal support clamping component and the adjustable limiting component. The internal support clamping component completes the coarse positioning and clamping of the turbine housing outlet. The adjustable limiting component, by fitting with the end face of the air inlet and in conjunction with the limiting of the adjustable toggle component, finally completes the final precise positioning of the circumferential rotation angle of the turbine housing, ensuring that the rocker arm is precisely in a horizontal state.

[0031] 4. The internal support clamping assembly, in conjunction with the clamping pressure sensor, can perform internal support clamping on turbine housings of different models.

[0032] 5. Adjustable toggle components and adjustable limit components can be quickly switched according to different turbine housing models to meet the needs of small-batch, multi-variety production. Attached Figure Description

[0033] Figure 1 This invention provides a schematic diagram of the structure of a welding fixture for machining a turbine housing.

[0034] Figure 2 A schematic diagram of the adjustable welding clamping mechanism provided by the present invention;

[0035] Figure 3 A schematic diagram of the adjustable welding clamping mechanism provided by the present invention from another perspective;

[0036] Figure 4 A schematic diagram of the adjustable welding clamping mechanism provided by the present invention in the clamping state;

[0037] Figure 5 This is a schematic diagram of the adjustable toggle assembly provided by the present invention;

[0038] Figure 6 A schematic diagram of the adjustable toggle assembly provided by the present invention from another perspective;

[0039] Figure 7 A cross-sectional view of the actuating column provided by the present invention;

[0040] Figure 8 This is a schematic diagram of the internal support clamping assembly provided by the present invention;

[0041] Figure 9 A cross-sectional view of the internal support clamping assembly provided by the present invention;

[0042] Figure 10 A cross-sectional view of the fixed frame and fine-tuning positioning assembly provided by the present invention;

[0043] Figure 11 A schematic diagram of the combined structure of the mobile base, flip plate, flip drive and internal support clamping assembly provided by the present invention;

[0044] Figure 12 A schematic diagram of the combined structure of the mobile base, flip plate, flip drive and internal support clamping assembly provided by the present invention from another perspective;

[0045] Figure 13 A side view of the adjustable limiting component provided by the present invention;

[0046] Figure 14 This is a schematic diagram of the adjustable limiting component provided by the present invention.

[0047] The components include: 1. Turntable; 2. Adjustable welding clamping mechanism; 3. Fixed frame; 4. Moving base; 5. Internal support clamping assembly; 6. Adjustable limit assembly; 7. Adjustable actuating assembly; 8. Sliding drive; 9. Flipping plate; 10. Flipping drive; 11. Actuating ring seat; 12. Actuating disc; 13. Radial adjustment assembly; 14. Actuating column; 15. Adjusting groove; 16. Actuating seat; 17. Self-locking drive; 18. Screw; 19. Guide rod; 20. Connecting plate; 21. Fixed column; 22. Adjusting sleeve; 23. Locking column; 24. Push spring; 25. Locking groove; 26. Clamping base; 27. Sliding disc; 28. Push-pull rod; 29. ​​Clamping slide; 30. Clamping component; 31. Clamping drive cavity; 32. Clamping sliding hole; 33. Hinge seat; 34. Clamping drive; 35. Anti-slip pad. 36. Drive base; 37. Clamping electric push rod; 38. Mounting base; 39. Tilting shaft; 40. Mounting slot; 41. Mounting hole; 42. Feeding pressure sensor; 43. Fine-tuning positioning assembly; 44. Linear shift drive one; 45. Positioning base; 46. Positioning turntable; 47. Friction plate; 48. Fine-tuning push spring; 49. Electric push rod one; 50. Adjusting slide; 51. Limiting seat; 52. Limiting side plate; 53. Electric push rod two; 54. Adjusting slide groove; 55. Spring; 56. Adjusting base; 57. Sleeve; 58. Slide plate; 59. Top frame; 60. Guide slide rod; 61. Clamping bolt; 62. Drive motor; 63. Worm gear; 64. Worm; 65. Rotating gear; 66. Rotating gear ring; 67. Controller; 68. Limiting pressure sensor; 69. Positioning pressure sensor.

[0048] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0051] like Figures 1-14 As shown, the present invention provides a welding fixture for turbine housing processing, comprising a turntable 1 and an adjustable welding clamping mechanism 2 evenly distributed circumferentially along the turntable 1. The adjustable welding clamping mechanism 2 includes a fixed frame 3, a movable base 4, an inner support clamping assembly 5 for clamping the turbine housing, an adjustable limiting assembly 6 for positioning the turbine housing's air inlet end face, and an adjustable actuating assembly 7 for driving the turbine housing to rotate. The fixed frame 3 is mounted on the turntable 1, and the movable base 4 is slidably mounted radially on the turntable 1. A mechanism for driving the movable base 4 to slide is provided between the movable base 4 and the fixed frame 3. A sliding drive 8 is provided. A flip plate 9 is rotatably provided on the upper end of the movable base 4. A flip drive 10 is provided between the flip plate 9 and the movable base 4 to drive the flip plate 9 to switch between a horizontal and a vertical state. The inner support clamping assembly 5 is rotatably provided on the flip plate 9. The adjustable limiting assembly 6 is provided on one side of the fixed frame 3 and the movable base 4. The adjustable actuating assembly 7 is rotatably provided on the flip plate 9. The adjustable actuating assembly 7 is rotatably provided on the outside of the inner support clamping assembly 5. When the flip plate 9 is in a vertical state, the adjustable actuating assembly 7 and the inner support clamping assembly 5 are coaxially arranged.

[0052] like Figure 2 , Figures 5-12 As shown, the internal support clamping assembly 5 includes a clamping base 26, a sliding disk 27, a push-pull rod 28, a clamping slide 29, and a clamping member 30. The clamping base 26 is rotatably disposed through the central axis of the flip plate 9, the actuating ring seat 11, and the actuating disk 12. The clamping base 26 has a clamping drive cavity 31. The sliding disk 27 is disposed in the clamping drive cavity 31 and is slidably and sealingly connected to the clamping drive cavity 31. The side wall of the clamping base 26 is circumferentially arrayed with clamping sliding holes 32. The clamping sliding holes 32 are arranged radially along the clamping base 26. The clamping slide 29 is slidably disposed in the clamping sliding holes 32. The clamping member 30 is disposed on the side of the clamping slide 29 away from the clamping drive cavity 31. The push-pull rod 28 is disposed in the clamping drive cavity 31. The sidewall of the disk 27 is provided with a circumferential array of hinge seats 33. One end of the push-pull rod 28 is hinged to the hinge seat 33, and the other end of the push-pull rod 28 is hinged to the clamping slide 29. The hinge seat 33, the push-pull rod 28, the clamping slide 29 and the clamping slide hole 32 correspond one-to-one. The side of the flip plate 9 away from the fixed frame 3 is provided with a clamping drive 34 that drives the sliding disk 27 to slide along the clamping base 26 axially. The internal support clamping assembly 5 is rotatably connected to the clamping drive 34. The clamping drive 34 drives the sliding disk 27 to slide along the clamping base 26 axially. The sliding disk 27 drives the clamping slide 29 to slide along the clamping slide hole 32 through the push-pull rod 28, thereby driving multiple sets of clamping parts 30 to move synchronously along the clamping base 26 radially, moving closer or further away from each other, to achieve internal support and fixation of the turbine housing outlet.

[0053] The clamping member 30 is arc-shaped on the side away from the axis of the clamping base 26. A clamping pressure sensor is provided on the side of the clamping member 30 away from the axis of the clamping base 26. The clamping pressure sensor facilitates the detection of whether the clamping member 30 is in contact with the side wall of the turbine housing outlet, thereby facilitating the determination of whether the internal support is stable.

[0054] The clamping member 30 is provided with an anti-slip pad 35 on the side away from the axis of the clamping base 26. The clamping pressure sensor is located between the anti-slip pad 35 and the side wall of the clamping member 30. The anti-slip pad 35 is provided with wavy anti-slip protrusions.

[0055] The outer wall of the sliding disk 27 is provided with a sealing ring, which enables the sliding disk 27 to slide and seal with the clamping drive cavity 31.

[0056] The clamping drive 34 includes a drive base 36 and a clamping electric push rod 37. The drive base 36 is fixedly mounted on the side wall of the flip plate 9 and is rotatably connected to the clamping base 26. The clamping electric push rod 37 is mounted on the side wall of the drive base 36. The moving end of the clamping electric push rod 37 is rotatably connected to the sliding disk 27. The extension and retraction of the clamping electric push rod 37 drives the sliding disk 27 to slide along the axial direction of the clamping base 26.

[0057] like Figures 1-6 As shown, the adjustable actuation assembly 7 includes an actuation ring seat 11, an actuation disk 12, a radial adjustment assembly 13, and an actuation post 14. The actuation ring seat 11 is rotatably mounted on the side wall of the flip plate 9. The actuation disk 12 is coaxially fixed to the outside of the actuation ring seat 11. The inner support clamping assembly 5 passes through the central shaft of the actuation ring seat 11 and the actuation disk 12. The actuation disk 12 has an adjustment groove 15 along the radial direction. The radial adjustment assembly 13 is disposed in the adjustment groove 15 and has a [missing information - likely a design element]. There is a toggle seat 16, and the toggle post 14 is disposed on the side wall of the toggle seat 16. The axis of the toggle post 14 is parallel to the axis of the toggle ring seat 11. The flip plate 9 is provided with a self-locking drive 17 to drive the toggle ring seat 11 to rotate. The radial adjustment component 13 adjusts the distance from the toggle seat 16 to the circumferential side wall of the toggle ring seat 11, thereby adjusting the diameter of the rotation trajectory of the toggle post 14, so that the rotation trajectory of the toggle post 14 interferes with the turbine housing, so that when the toggle ring seat 11 rotates, it will drive the turbine housing to rotate.

[0058] The length of the actuating disc 12 from the side away from the flip plate 9 to the flip plate 9 is equal to the length of the clamping base 26 from the side away from the flip plate 9 to the flip plate 9, so that the side wall of the actuating disc 12 is flush with the side wall of the clamping base 26.

[0059] The actuation disk 12 is provided with a feeding pressure sensor 42 on the side near the fixed frame 3. The feeding pressure sensor 42 can detect whether a turbine housing is placed on the actuation disk 12.

[0060] The radial adjustment assembly 13 includes a screw 18, a guide rod 19, and a connecting plate 20 disposed at the ends of the screw 18 and the guide rod 19. The screw 18 and the guide rod 19 are rotatably disposed in the adjustment groove 15. The screw 18 is rotatably connected to the actuating disk 12. The actuating seat 16 is slidably disposed on the screw 18 and the guide rod 19. The actuating seat 16 is threadedly connected to the screw 18. By rotating the screw 18, the actuating seat 16 is moved along the screw 18 and the guide rod 19, thereby adjusting the distance from the actuating seat 16 to the axis of the actuating disk 12. An angle sensor is provided between the actuating ring seat 11 and the flip plate 9.

[0061] The self-locking drive 17 includes a drive motor 62, a worm gear 63, a worm 64, and a rotating gear 65. A rotating gear ring 66 is coaxially provided on the outer side of the actuating ring seat 11. The rotating gear 65 is rotatably disposed on the side of the flip plate 9 near the actuating disk 12, and the rotating gear 65 meshes with the rotating gear ring 66. The worm 64 and the worm gear 63 are rotatably disposed on the side of the flip plate 9 away from the actuating disk 12, and the worm gear 63 meshes with the worm 64. The drive motor 62 is disposed on the side wall of the flip plate 9, and the output end of the drive motor 62 is connected to the worm 64. The worm gear 63 and the rotating gear 65 are coaxially fixed. The helix angle of the worm 64 is smaller than the friction angle between the worm gear 63 and the worm 64.

[0062] The drive motor 62 drives the worm 64 to rotate, the worm 64 drives the worm wheel 63 to rotate, the worm wheel 63 drives the rotating gear 65 to rotate, the rotating gear 65 drives the rotating gear ring 66 to rotate, and the rotating gear ring 66 drives the actuating ring seat 11 to rotate. When the helix angle of the worm 64 is less than the friction angle between the worm wheel 63 and the worm 64, the friction will prevent the worm wheel 63 from reversing. The worm wheel 63 and worm 64 mechanism has self-locking properties, which can effectively prevent reversing and facilitate more stable and reliable clamping and limiting of the turbine housing.

[0063] In some embodiments, the side wall of the connecting plate 20 is provided with a screwing part that is fixedly connected to the screw 18, and the screw 18 can be rotated through the screwing part.

[0064] See Figures 5-7 The actuating column 14 includes a fixed column 21 and an adjusting sleeve 22 slidably sleeved on the outside of the fixed column 21. The fixed column 21 is located on the side wall of the actuating seat 16. The end of the fixed column 21 is provided with a sliding hole. The sliding hole is symmetrically provided with locking columns 23. A push spring 24 is provided between the locking columns 23. The inner wall of the adjusting sleeve 22 is provided with a locking groove 25. The locking groove 25 is equidistantly distributed along the length direction of the adjusting sleeve 22. The fixed column 21 and the adjusting sleeve 22 are positioned by locking the locking columns 23 into the locking groove 25. The length of the actuating column 14 can be adjusted by pulling the adjusting sleeve 22. The outer side of the adjusting sleeve 22 is covered with a flexible anti-slip sleeve to increase the friction between the actuating column 14 and the turbine housing.

[0065] like Figure 2 , Figure 4 , Figure 11 and Figure 12 As shown, the flip drive 10 includes a flip electric actuator. The movable base 4 is symmetrically provided with mounting seats 38 at one end near the fixed frame 3. The bottom end of the flip plate 9 is provided with a flip shaft 39, which is rotatably connected to the mounting seat 38. The movable base 4 is provided with a mounting groove 40. One end of the flip electric actuator is hinged to the bottom wall of the mounting groove 40, and the other end of the flip electric actuator is hinged to the side wall of the flip plate 9. The flip plate 9 is provided with a through mounting hole 41. The internal support clamping assembly 5 is rotatably disposed in the mounting hole 41. By extending and retracting the flip electric actuator, the flip plate 9 is driven to switch between a horizontal state and a vertical state.

[0066] like Figure 2 , Figure 3 and Figure 10 As shown, a fine-tuning positioning component 43 is provided on the side of the fixed frame 3 near the movable base 4. The fine-tuning positioning component 43 includes a line-shift drive 44, a positioning base 45, a positioning turntable 46, and a friction plate 47. The line-shift drive 44 is located on the side wall of the fixed frame 3, the positioning base 45 is located at the end of the line-shift drive 44, and the positioning turntable 46 is slidably located on the side of the positioning base 45 away from the line-shift drive 44. A fine-tuning push spring 48 is provided between the positioning base 45 and the positioning turntable 46, and the friction plate 47 is located between the positioning base 45 and the positioning turntable 46. Initially, the line-shift drive 44 retracts, and the fine-tuning push spring 48 pushes the positioning turntable 46, causing the positioning turntable 46 to engage with the positioning base 45. There is a gap between them, so the friction plate 47 and the positioning turntable 46 are not in contact. The positioning turntable 46 can rotate freely. The side wall of the positioning turntable 46 is provided with a positioning pressure sensor 69. After the turbine housing air inlet end face is attached to the adjustable limiting component 6, the linear displacement drive 44 drives the positioning base 45 to move closer to the positioning turntable 46, so that the positioning turntable 46 and the side wall of the turbine housing are more tightly attached. When the friction plate 47 is tightly clamped between the positioning turntable 46 and the positioning base 45, the friction plate 47 uses friction to brake the positioning turntable 46, so that the positioning turntable 46 cannot rotate and cannot move axially, thus preventing the turbine housing from moving axially and firmly clamping and fixing the turbine housing.

[0067] like Figure 1 , Figure 2 , Figure 3 , Figure 13 and Figure 14As shown, the adjustable limiting assembly 6 includes an electric push rod 49, an adjusting slide 50, a limiting seat 51, a limiting side plate 52, and an electric push rod 53. The upper wall of the turntable 1 is provided with an adjusting slide groove 54, which is perpendicular to the sliding drive 8. The adjusting slide 50 is slidably connected to the adjusting slide groove 54. The electric push rod 49 is located on the upper wall of the turntable 1, and its output end is connected to the adjusting slide 50, driving the adjusting slide 50 to slide along the adjusting slide groove 54. The limiting seat 51 is located inside the adjusting slide 50, and the top end of the limiting side plate 52 is connected to the limiting seat. One end of 51 near the fixed frame 3 is rotatably connected. The two ends of the electric push rod 53 are respectively hinged to the limiting side plate 52 and the limiting seat 51. The electric push rod 53 extends and retracts to drive the limiting side plate 52 to rotate around the limiting seat 51, thereby adjusting the tilt angle of the limiting side plate 52 so that the limiting side plate 52 is parallel to the end face of the turbine housing air inlet. The electric push rod 49 drives the adjusting slide 50 to slide along the adjusting slide groove 54 to adjust the distance from the limiting side plate 52 to the end face of the turbine housing air inlet, which can be adapted to different models of turbine housing. The side wall of the limiting side plate 52 is provided with a limiting pressure sensor 68.

[0068] The limiting seat 51 is slidably connected to the adjusting slide 50. The sliding direction of the limiting seat 51 is parallel to the sliding direction of the moving base 4. A spring 55 is provided between the limiting seat 51 and the adjusting slide 50. The spring 55 makes the limiting seat 51 always maintain the tendency to slide towards the moving base 4. When the moving base 4 moves closer to the fixed frame 3, the flip plate 9 can push the limiting seat 51 to slide accordingly, avoiding interference between the limiting side plate 52 and the flip plate 9 or the moving base 4.

[0069] The adjustable slide 50 includes an adjustable base 56, a sleeve 57, a sliding plate 58, and a top frame 59. The top frame 59 is arranged in an inverted U-shape, and guide slide rods 60 are arranged in an array inside the top frame 59. The limiting seat 51 is slidably connected to multiple sets of guide slide rods 60. The spring 55 is disposed between the limiting seat 51 and the top frame 59. The adjustable base 56 is slidably connected to the adjustable slide groove 54. The sleeve 57 is symmetrically arranged on the adjustable base 56. The sliding plate 58 is slidably disposed inside the sleeve 57. The side wall of the sleeve 57 is threaded with a clamping bolt 61. Pulling the sleeve 57 and the sliding plate 58 facilitates the adjustment of the height of the top frame 59. The sliding plate 58 is clamped by the clamping bolt 61, which can fix the sliding plate 58 and the sleeve 57.

[0070] The fixed frame 3 is equipped with a controller 67, which is electrically connected to a clamping pressure sensor, a limit pressure sensor 68, a positioning pressure sensor 69, a feeding pressure sensor 42, a clamping electric push rod 37, a flipping electric push rod, a sliding drive 8, a line shifting drive 44, and a drive motor 62. The sliding drive 8 includes a sliding electric push rod.

[0071] In practical use, firstly, adjust the adjustable limiting component 6 and the adjustable actuating component 7 manually according to the model and shape of the turbine housing. First, adjust the angle between the limiting side plate 52 and the limiting seat 51 according to the angle between the air inlet end face and the rocker arm welding surface of the turbine housing model. Control the extension and retraction of the electric push rod 53 to drive the limiting side plate 52 to rotate around the limiting seat 51, thereby adjusting the tilt angle of the limiting side plate 52 so that the angle between the limiting side plate 52 and the limiting seat 51 is equal to the angle between the air inlet end face and the rocker arm welding surface of the turbine housing. First, place the turbine housing on the actuating plate 12 and insert the inner support clamping component 5 into the air outlet of the turbine housing. Then, start the clamping drive 34, and the clamping electric push rod 37 extends and retracts to drive the sliding plate 27 along the clamping base. The axial sliding mechanism 26, via the push-pull rod 28, drives the clamping slide 29 to slide along the clamping slide hole 32, thereby causing multiple sets of clamping components 30 to move radially and synchronously away from each other along the clamping base 26, achieving internal support and fixation of the turbine housing. Then, the tilting electric push rod is controlled to extend, causing the tilting plate 9 to rotate from a horizontal state to a vertical state. Then, the sliding drive 8 is controlled to drive the moving base 4 to slide closer to the fixed frame 3. When the turbine housing sidewall is in contact with the positioning turntable 46, and the pressure value detected by the positioning pressure sensor 69 is greater than the first preset threshold of the positioning pressure sensor 69, the controller 67 controls the sliding drive 8 to stop moving the moving base 4. At this time, the turbine housing is clamped between the positioning turntable 46 and the tilting plate 9. The fine-tuning spring 48 pushes the positioning turntable 46, creating a gap between the positioning turntable 46 and the positioning base 45. The friction plate 47 does not contact the positioning turntable 46, allowing the positioning turntable 46 to rotate freely. The turbine housing is manually rotated so that the rocker arm welding surface of the turbine housing is in a horizontal state. Then, the electric push rod 49 is controlled to drive the adjusting slide 50 to slide along the adjusting slide groove 54, adjusting the distance from the limiting side plate 52 to the turbine housing air inlet end face. When the turbine housing air inlet end face is tightly fitted with the side wall of the limiting side plate 52 and the pressure value detected by the limiting pressure sensor 68 is greater than the preset threshold, the controller 67 controls the electric push rod 49 to stop. At this time, the turbine housing air inlet end face is tightly fitted with the side wall of the limiting side plate 52, and the turbine housing rocker arm... With the welding surface in a horizontal position, the screw 18 is rotated, causing the actuating seat 16 to move along the screw 18 and guide rod 19. This adjusts the distance between the actuating seat 16 and the circumferential side wall of the actuating ring seat 11, making the actuating column 14 fit against the outer wall of the turbine housing and causing the rotation trajectory of the actuating column 14 to interfere with the turbine housing. The adjusting sleeve 22 is pulled according to the thickness of the turbine housing to adjust the length of the actuating column 14. The locking column 23 is inserted into the locking groove 25 to achieve the positioning of the fixing column 21 and the adjusting sleeve 22. After the adjustment is completed, the subsequent processing of the turbine housing can be automatically positioned. After the adjustable limit component 6 and the adjustable actuating component 7 are adjusted, the inner support clamping component 5 is reset, and the welding processing of this batch of turbine housings begins.

[0072] During welding, the turntable 1 is equipped with a loading station, a welding station, and an unloading station in sequence along its circumference. An automatic loading machine can be installed at the loading station to automatically load the turbine housing (automatic loading machines are existing technology and will not be described in detail here). When the adjustable welding clamping mechanism 2 rotates to the loading station, the sliding drive 8 is in the extended state, the moving base 4 slides to the furthest point from the fixed frame 3, and the flip plate 9 remains horizontal, facilitating the automatic loading machine to automatically transport the turbine housing onto the actuating plate 12. When the loading pressure sensor 42 detects that a turbine housing is placed on the actuating plate 12, the loading pressure sensor 42 sends a signal to the controller 67. The controller 67 controls the clamping electric push rod 37 to extend, and the extension and retraction of the clamping electric push rod 37 drives the sliding plate 27 to slide axially along the clamping base 26. As the sliding plate 27 moves closer to the clamping slide 29, the sliding disk 27 drives the clamping slide 29 to slide along the clamping sliding hole 32 via the push-pull rod 28. This causes multiple sets of clamping components 30 to move radially and synchronously away from each other along the clamping base 26, achieving internal support and fixation of the turbine housing. When the clamping component 30 is tightly fitted with the side wall of the turbine housing outlet, the clamping pressure sensor is pressed and generates an electrical signal, which is sent to the controller 67. The controller 67 controls the extension of the flipping electric push rod, which drives the flipping plate 9 to rotate from a horizontal state to a vertical state. During the flipping process, under the action of gravity, the air inlet end of the turbine housing automatically rotates to below the internal support clamping assembly 5. Then, the controller 67 controls the self-locking drive 17 to drive the actuating disk 12 to rotate for the first time. The drive motor 62 drives the worm gear 64 to rotate. 64 drives the worm gear 63 to rotate, the worm gear 63 drives the rotating gear 65 to rotate, the rotating gear 65 drives the rotating gear ring 66 to rotate, and the rotating gear ring 66 drives the actuating ring seat 11 to rotate. The actuating disk 12 rotates at an angle less than or equal to 180° for the first time. Initially, the actuating column 14 is located on the side of the actuating disk 12 near the adjustable limit component 6 and below the adjustable limit component 6. The actuating column 14 drives the air intake end of the turbine housing to rotate away from the adjustable limit component 6. Then, the controller 67 controls the sliding drive 8 to drive the moving base 4 to slide closer to the fixed frame 3. When the side wall of the turbine housing is in contact with the positioning turntable 46, and the pressure value detected by the positioning pressure sensor 69 is greater than the first preset threshold of the positioning pressure sensor 69, the controller 67 controls the sliding drive 8 to slide closer to the fixed frame 3. When the drive 8 stops moving the movable base 4, the turbine housing is clamped between the positioning turntable 46 and the tilting plate 9, with a gap between the positioning turntable 46 and the positioning base 45. The friction plate 47 does not contact the positioning turntable 46, allowing the positioning turntable 46 to rotate freely. Then, the controller 67 controls the self-locking drive 17 to drive the actuating disk 12 to rotate a second time. The actuating disk 12 drives the air inlet end of the turbine housing to rotate closer to the limiting side plate 52 via the actuating column 14. When the air inlet end face of the turbine housing is tightly fitted with the side wall of the limiting side plate 52 and the pressure value detected by the limiting pressure sensor 68 is greater than the preset threshold, the controller 67 controls the drive motor 62 to stop rotating. At this time, the actuating column 14 and the limiting side plate 52 limit the turbine housing, preventing it from rotating.The worm gear mechanism has self-locking properties, effectively preventing reverse rotation and facilitating more stable and reliable clamping and limiting of the turbine housing. Simultaneously, the controller 67 controls the linear drive 44 to move the positioning base 45 closer to the positioning turntable 46, making the positioning turntable 46 fit more tightly against the turbine housing sidewall. When the pressure value detected by the positioning pressure sensor 69 exceeds the second preset threshold (the second preset threshold is greater than the first preset threshold), the friction plate 47 is tightly clamped between the positioning turntable 46 and the positioning base 45. The friction plate 47 uses friction to brake the positioning turntable 46, thus preventing the positioning turntable 46 from moving. The turbine housing is rotated, and the positioning turntable 46 cannot move axially, completing the adjustment of the turbine housing's posture and the clamping and fixing in the axial and circumferential directions. At this time, the rocker arm welding surface of the turbine housing is located above the turbine housing and is in a horizontal state, thus facilitating rocker arm welding when the turbine housing rotates to the welding station. When the adjustable welding clamping mechanism 2 rotates to the unloading station, the sliding drive 8 extends to drive the moving base 4 to reset, so that the moving base 4 slides to the farthest distance from the fixed frame 3. The flip drive 10 drives the flip plate 9 to rotate to a horizontal state, and the inner support clamping assembly 5, the fine-tuning positioning assembly 43, and the adjustable toggle assembly 7 reset, facilitating the unloading of the welded turbine housing.

[0073] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0074] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0075] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding fixture for machining turbine housings, characterized in that: The system includes a turntable (1) and an adjustable welding clamping mechanism (2) evenly distributed around the turntable (1). The adjustable welding clamping mechanism (2) includes a fixed frame (3), a movable base (4), an internal support clamping assembly (5) for clamping the turbine housing, an adjustable limiting assembly (6) for positioning the turbine housing inlet end face, and an adjustable actuating assembly (7) for driving the turbine housing to rotate. The fixed frame (3) is mounted on the turntable (1), and the movable base (4) is slidably mounted on the turntable (1) radially. A drive movable base (4) is provided between the movable base (4) and the fixed frame (3). 4) Sliding drive (8), the upper end of the movable base (4) is provided with a flip plate (9), and a flip drive (10) is provided between the flip plate (9) and the movable base (4) to drive the flip plate (9) to switch between horizontal and vertical states. The inner support clamping assembly (5) is rotatably mounted on the flip plate (9). The adjustable limit assembly (6) is located on one side of the fixed frame (3) and the movable base (4). The adjustable toggle assembly (7) is rotatably mounted on the flip plate (9). The adjustable toggle assembly (7) is rotatably mounted on the outside of the inner support clamping assembly (5). The fixed frame (3) is provided with a fine-tuning positioning component (43) on the side near the movable base (4). The fine-tuning positioning component (43) includes a line shift drive (44), a positioning base (45), a positioning turntable (46), and a friction plate (47). The line shift drive (44) is located on the side wall of the fixed frame (3). The positioning base (45) is located at the end of the line shift drive (44). The positioning turntable (46) is slidably located on the side of the positioning base (45) away from the line shift drive (44). A fine-tuning push spring (48) is provided between the positioning base (45) and the positioning turntable (46). The friction plate (47) is located between the positioning base (45) and the positioning turntable (46). A positioning pressure sensor (69) is provided on the side wall of the positioning turntable (46). The adjustable limiting assembly (6) includes an electric push rod one (49), an adjusting slide (50), a limiting seat (51), a limiting side plate (52), and an electric push rod two (53). The upper wall of the turntable (1) is provided with an adjusting slide groove (54), which is perpendicular to the sliding drive (8). The adjusting slide (50) is slidably connected to the adjusting slide groove (54). The electric push rod one (49) is located on the upper wall of the turntable (1). The electric push rod one (49) is used for power supply. The outlet end is connected to the adjusting slide (50) and drives the adjusting slide (50) to slide along the adjusting slide groove (54). The limiting seat (51) is located inside the adjusting slide (50). The top end of the limiting side plate (52) is rotatably connected to the end of the limiting seat (51) near the fixed frame (3). The two ends of the electric push rod (53) are respectively hinged to the limiting side plate (52) and the limiting seat (51). The side wall of the limiting side plate (52) is provided with a limiting pressure sensor (68).

2. The welding fixture for turbine housing machining according to claim 1, characterized in that: The adjustable actuation assembly (7) includes an actuation ring seat (11), an actuation disk (12), a radial adjustment assembly (13), and an actuation post (14). The actuation ring seat (11) is rotatably mounted on the side wall of the flip plate (9). The actuation disk (12) is coaxially fixed to the outside of the actuation ring seat (11). The inner support clamping assembly (5) passes through the central shaft of the actuation ring seat (11) and the actuation disk (12). The actuation disk (12) is provided with an adjustment groove (15) radially. The radial adjustment assembly (13) is located in the adjustment groove (15). The radial adjustment assembly (13) is provided with a toggle seat (16). The toggle column (14) is located on the side wall of the toggle seat (16). The axis of the toggle column (14) is parallel to the axis of the toggle ring seat (11). The flip plate (9) is provided with a self-locking drive (17) that drives the toggle ring seat (11) to rotate. The toggle plate (12) is provided with a feeding pressure sensor (42) on the side near the fixed frame (3).

3. The welding fixture for turbine housing machining according to claim 2, characterized in that: The radial adjustment assembly (13) includes a screw (18), a guide rod (19), and a connecting plate (20) disposed at the ends of the screw (18) and the guide rod (19). The screw (18) and the guide rod (19) are rotatably disposed in the adjustment groove (15). The screw (18) is rotatably connected to the actuating disk (12). The actuating seat (16) is slidably disposed on the screw (18) and the guide rod (19). The actuating seat (16) is threadedly connected to the screw (18).

4. A welding fixture for machining a turbine housing according to claim 3, characterized in that: The internal support clamping assembly (5) includes a clamping base (26), a sliding disk (27), a push-pull rod (28), a clamping slide (29), and a clamping member (30). The clamping base (26) is rotatably mounted on the flip plate (9). The clamping base (26) has a clamping drive cavity (31) inside. The sliding disk (27) is located inside the clamping drive cavity (31) and is slidably and sealingly connected to the clamping drive cavity (31). The side wall of the clamping base (26) is provided with clamping sliding holes (32) arranged in a circumferential array around the axis. The clamping sliding holes (32) are arranged radially along the clamping base (26). The clamping slide (29) is slidably mounted inside the clamping sliding holes (32). The clamping member (30) is provided with... On the side of the clamping slide (29) away from the clamping drive cavity (31), the push-pull rod (28) is located inside the clamping drive cavity (31). The sliding disk (27) has a circumferential array of hinge seats (33) distributed on its sidewall. One end of the push-pull rod (28) is hinged to the hinge seat (33), and the other end of the push-pull rod (28) is hinged to the clamping slide (29). The hinge seat (33), push-pull rod (28), clamping slide (29), and clamping sliding hole (32) correspond one-to-one. On the side of the flip plate (9) away from the fixed frame (3), there is a clamping drive (34) that drives the sliding disk (27) to slide axially along the clamping base (26). The inner support clamping assembly (5) is rotatably connected to the clamping drive (34).

5. A welding fixture for turbine housing machining according to claim 4, characterized in that: The clamping member (30) is arc-shaped on the side away from the axis of the clamping base (26), and a clamping pressure sensor is provided on the side of the clamping member (30) away from the axis of the clamping base (26).

6. A welding fixture for turbine housing machining according to claim 5, characterized in that: The clamping drive (34) includes a drive seat (36) and a clamping electric push rod (37). The drive seat (36) is fixedly disposed on the side wall of the flip plate (9). The drive seat (36) is rotatably connected to the clamping base (26). The clamping electric push rod (37) is disposed on the side wall of the drive seat (36). The moving end of the clamping electric push rod (37) is rotatably connected to the sliding disk (27).

7. A welding fixture for turbine housing machining according to claim 6, characterized in that: The self-locking drive (17) includes a drive motor (62), a worm gear (63), a worm (64), and a rotating gear (65). A rotating gear ring (66) is coaxially provided on the outer side of the actuation ring seat (11). The rotating gear (65) is rotatably located on the side of the flip plate (9) near the actuation disk (12). The rotating gear (65) meshes with the rotating gear ring (66). The worm (64) and the worm gear (63) are rotatably located on the side of the flip plate (9) away from the actuation disk (12). The worm gear (63) meshes with the worm (64). The drive motor (62) is located on the side wall of the flip plate (9). The output end of the drive motor (62) is connected to the worm (64). The worm gear (63) and the rotating gear (65) are coaxially fixed.

8. A welding fixture for machining a turbine housing according to claim 7, characterized in that: The fixed frame (3) is equipped with a controller (67), which is electrically connected to the clamping pressure sensor, the limit pressure sensor (68), the positioning pressure sensor (69), the feeding pressure sensor (42), the clamping electric push rod (37), the flipping electric push rod, the sliding drive (8), the line shifting drive (44), and the drive motor (62).

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