A flexible clamping device for electron beam welding of spoke-type casing

Abstract

The present invention relates to the field of aviation parts clamping, and discloses a spoke-type casing electron beam welding flexible clamping device, comprising a base and a clamping mechanism; the base comprises a mother disk and an annular disk, the mother disk is connected to the daughter disk through a zero-point positioning system, and the daughter disk and the mother disk are on the same central axis; a plurality of pads are circumferentially arranged on the daughter disk, and rollers are provided on the pads, the inner circle of the annular disk is provided with an annular slide rail, and the rollers cooperate with the annular slide rail; a worm is provided for rotation of the daughter disk, a transmission bar is provided on the bottom surface of the annular disk, and the transmission bar is engaged with the worm, and a plurality of connecting parts are circumferentially arranged on the top surface of the annular disk. Through the design of the centering mechanism and the clamping mechanism, high-precision positioning of the assembly to be welded is achieved, meeting the strict requirements of aircraft engine manufacturing. The clamping device has a simple structure and is easy to operate, and the staff can quickly get started. The design of the quick-change wrench and the telescopic mechanism can significantly improve the operating efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of aviation parts clamping, in particular to a spoke-type casing electron beam welding flexible clamping device. Background Art

[0002] As a core component of modern aircraft, aircraft engines' performance, reliability, and economy directly impact the overall performance of the aircraft. During engine manufacturing, the spoke-shaped casing, a key load-bearing component, has a significant impact on engine performance, lifespan, and safety, thanks to its weld quality.

[0003] Spoke-type receivers are typically made up of multiple parts welded together using a precision welding process. The welding quality of these parts is subject to extremely stringent requirements to ensure performance and safety are maintained even in extreme operating environments.

[0004] Traditional welding processes mainly rely on manual operation or semi-automatic equipment, and these methods have some difficult-to-overcome problems. First, due to the complex structure of the parts, the positioning accuracy during the welding process is difficult to guarantee, and welding defects such as lack of fusion, cracks and deformation are prone to occur. Secondly, the currently available welding clamping devices often lack sufficient stability and are difficult to effectively fix the receiver, resulting in the receiver being easily displaced during welding, thereby further increasing the possibility of welding defects. In addition, the existing welding processes and equipment also have shortcomings in terms of ease of operation and production efficiency. Operators need to spend a lot of time and energy to position and clamp the receiver, which not only increases labor intensity, but also reduces production efficiency, making it difficult to effectively achieve mass and standardized production.

[0005] With the rapid development of the aviation industry, the requirements for aircraft engine performance are constantly increasing, and traditional welding processes can no longer meet the manufacturing needs of modern aircraft engines. Summary of the Invention

[0006] The purpose of the present invention is to provide a spoke-type casing electron beam welding flexible clamping device to enhance the accuracy, stability and ease of operation of welding.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a spoke-type casing electron beam welding flexible clamping device, comprising a component to be welded, wherein the component to be welded comprises an inner ring, blades, and an outer ring, wherein a plurality of blades are provided, and the plurality of blades are circumferentially arranged between the inner ring and the outer ring, and further comprising a base and a clamping mechanism;

[0008] The base includes a mother disk and an annular disk, the mother disk is connected to the daughter disk through a zero-point positioning system, and the daughter disk and the mother disk are on the same central axis; a plurality of pads are circumferentially provided on the daughter disk, and rollers are provided on the pads, and an annular slide rail is provided on the inner circle of the annular disk, and the rollers cooperate with the annular slide rail; a worm is provided for the rotation of the daughter disk, a transmission bar is provided on the bottom surface of the annular disk, and the transmission bar is engaged with the worm, and a plurality of connecting parts are circumferentially provided on the top surface of the annular disk;

[0009] The clamping mechanism includes a clamping base and an auxiliary top plate. The clamping base is fixedly mounted on the sub-plate. A centering mechanism is provided at the center of the clamping base. The clamping base is provided with a plurality of clamping members, and the clamping members are used to clamp the blades. The clamping base is also provided with a plurality of telescopic mechanisms, and the telescopic mechanisms are used to support the outer ring.

[0010] The connecting piece is connected to the auxiliary top plate. The auxiliary top plate is provided with a plurality of protrusions. The outer surfaces of the protrusions are inclined, and the outer surfaces of the protrusions are matched with the telescopic mechanism.

[0011] Preferably, the centering mechanism includes a centering bolt and a centering base, the centering base is installed at the center position of the clamping base, a centering circular hole is opened at the center of the clamping base, and the centering bolt is placed in the centering circular hole, the centering bolt outer sleeve is provided with a centering pressure plate, and the top end of the centering bolt is threaded with a centering nut; the centering bolt outer sleeve is provided with a quick-change wrench, and the quick-change wrench is placed between the centering nut and the centering pressure plate.

[0012] Preferably, both the centering base and the inner ring are provided with pin holes, and the two pin holes are engaged with each other through a positioning pin.

[0013] Preferably, a plurality of through holes are circumferentially provided on the clamping base, and the connecting piece passes through the through holes to be connected with the auxiliary top plate.

[0014] Preferably, the zero-point positioning system includes a plurality of zero-point positioning blocks, and the plurality of zero-point positioning blocks are circumferentially arranged on the master disc.

[0015] Preferably, the end of the worm protrudes out of the sub-disk, and the end of the worm is provided with a prism for matching a torque wrench.

[0016] Preferably, the telescopic mechanism includes a telescopic pad, a sliding guide rail, a reinforcement block and a top plate. The telescopic pad is installed on the clamping base, and a sliding guide rail is provided on the telescopic pad. The sliding guide rail is slidably connected with a reinforcement block, and a top plate is provided on the outside of the reinforcement block. The reinforcement block cooperates with the outer surface of the protrusion, and the top plate cooperates with the inner surface of the outer ring.

[0017] Preferably, a plurality of auxiliary pads are provided on the clamping base, and the auxiliary pads and the clamping member are located on the same radius.

[0018] Preferably, an outer ring pad is provided at the upper edge of the clamping base, and the outer ring pad cooperates with the outer ring.

[0019] Preferably, a pressing handle is provided on the upper surface of the sub-disk, and the pressing handle cooperates with the outer ring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) High-precision positioning: Through the design of the centering mechanism and the clamping mechanism, high-precision positioning of the components to be welded is achieved, meeting the strict requirements of aircraft engine manufacturing.

[0022] (2) Easy to operate: The clamping device has a simple structure and is easy to operate, allowing staff to quickly get started. The design of the quick-change wrench and telescopic mechanism can significantly improve operating efficiency.

[0023] (3) Improve welding quality: High-precision positioning and stable clamping functions ensure the stability of the welding process, improve welding quality and reduce welding defect rate.

[0024] (4) Shorten the production cycle: By optimizing the design of the clamping device, the preparation time before welding and the adjustment time during welding are reduced, which can significantly improve production efficiency and shorten the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the flexible clamping device for electron beam welding of a spoke-type casing according to the present invention.

[0026] Figure 2 This is a schematic structural diagram of the flexible clamping device for electron beam welding of a spoke-type casing according to the present invention.

[0027] Figure 3 Schematic diagram of the centering mechanism of the present invention.

[0028] Figure 4 Schematic diagram of the clamping mechanism of the present invention.

[0029] Figure 5 It is a schematic diagram of the auxiliary top plate of the present invention.

[0030] Figure 6 It is a schematic diagram of the auxiliary top plate of the present invention.

[0031] Figure 7 It is a schematic diagram of the telescopic mechanism of the present invention.

[0032] Figure 8 Schematic diagram of the assembly to be welded according to the present invention.

[0033] Figure 9 It is a schematic diagram of the clamping base of the present invention.

[0034] 1. Base; 11. Mother disk; 12. Sub-disk; 13. Zero point positioning system; 14. Roller; 15. Pad; 16. Annular slide; 17. Transmission bar; 18. Worm; 19. Annular disk; 110. Connector; 2. Centering mechanism; 21. Centering hole; 22. Centering bolt; 23. Centering nut; 24. Centering pressure plate; 25. Quick-change wrench; 3. Clamping mechanism; 31. Clamping base; 32. Centering base; 33. Pin hole; 34. Clamping part; 35. Auxiliary top plate; 351. Bump; 36. Auxiliary pad; 37. Telescopic mechanism; 371. Telescopic pad; 372. Sliding guide; 373. Reinforcement block; 374. Top plate; 38. Outer ring pad; 39. Clamping handle; 4. Components to be welded; 41. Inner ring; 42. Blade; 43. Outer ring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-9 The present invention provides a technical solution: a spoke-type casing electron beam welding flexible clamping device, comprising a component to be welded 4, wherein the component to be welded 4 comprises an inner ring 41, blades 42 and an outer ring 43, wherein a plurality of blades 42 are provided, and the plurality of blades 42 are circumferentially arranged between the inner ring 41 and the outer ring 43, and further comprising a base 1 and a clamping mechanism 3;

[0037] The base 1 includes a mother disk 11 and an annular disk 19. The mother disk 11 is connected to a daughter disk 12 via a zero-point positioning system 13. The daughter disk 12 and the mother disk 11 are aligned on the same central axis. The zero-point positioning system 13 includes a plurality of zero-point positioning blocks arranged circumferentially on the mother disk 11 to ensure that the daughter disk and the mother disk are aligned on the same central axis, thereby maintaining the stability of the base.

[0038] The sub-disk 12 is circumferentially provided with a plurality of pads 15, each of which is provided with rollers 14. The inner circumference of the annular disk 19 is provided with an annular slide 16, and the rollers 14 engage with and are locked within the annular slide 16, allowing the annular disk 19 to rotate axially along the sub-disk 12. A worm 18 is provided to rotate the sub-disk 12. A transmission bar 17 is provided on the bottom surface of the annular disk 19, and the transmission bar 17 meshes with the worm 18. The top surface of the annular disk 19 is circumferentially provided with a plurality of connecting members 110. Rotating the worm 18 drives the transmission bar 17, thereby driving the annular disk 19 and the connecting members 110 to rotate axially.

[0039] The clamping mechanism 3 includes a clamping base 31 and an auxiliary top plate 35, which are used to secure the inner ring 41, blades 42, and outer ring 43 of the assembly 4 to be welded, thereby facilitating subsequent welding. The clamping base 31 is fixedly mounted on the sub-plate 12. A centering mechanism 2 is provided at the center of the clamping base 31. The clamping base 31 is provided with a plurality of clamping members 34, which are used to clamp the blades 42. The clamping base 31 is also provided with a plurality of telescopic mechanisms 37, which are used to support the outer ring 43.

[0040] Since the bottom surface of the blade 42 can be designed as an inclined surface, in order to match it, the clamping base 31 is provided with a plurality of auxiliary pads 36. The top surface of the auxiliary pads 36 is an inclined surface that matches the bottom surface of the blade 42, and the auxiliary pads 36 and the clamping member 34 are on the same radius. The clamping member 34 is a conventional clamping device used to assist in fixing the blade 42.

[0041] The number of auxiliary pads 36, clamps 34 and telescopic mechanisms 37 is the same as the number of blades 42 to be welded. In this embodiment, there are 15 auxiliary pads 36, clamps 34 and telescopic mechanisms 37 for each blade 42.

[0042] The connector 110 is connected to the auxiliary top plate 35. The auxiliary top plate 35 is provided with a plurality of protrusions 351. The outer surfaces of the protrusions 351 are inclined and cooperate with the telescopic mechanism 37. The clamping base 31 is provided with a plurality of through holes circumferentially, and the connector 110 passes through the through holes to connect to the auxiliary top plate 35.

[0043] The telescopic mechanism 37 includes a telescopic pad 371, a sliding guide rail 372, a reinforcement block 373 and a top plate 374. The telescopic pad 371 is installed on the clamping base 31, and a sliding guide rail 372 is provided on the telescopic pad 371. The sliding guide rail 372 is slidably connected with a reinforcement block 373, and a top plate 374 is provided on the outside of the reinforcement block 373. The reinforcement block 373 cooperates with the outer surface of the protrusion 351, and the top plate 374 cooperates with the inner surface of the outer ring 43.

[0044] Since the outer surface of the protrusion 351 is inclined, the auxiliary top plate 35 will drive the protrusion 351 to rotate during rotation, thereby pushing the reinforcing block 373 to move in and outward directions, thereby achieving a squeezing effect on the inner surface of the outer ring 43.

[0045] The centering mechanism 2 includes a centering bolt 22 and a centering base 32. The centering base 32 is installed at the center of the clamping base 31. A centering circular hole 21 is opened at the center of the clamping base 31, and the centering bolt 22 is placed in the centering circular hole 21. The centering bolt 22 is provided with a centering pressure plate 24 on its outer sleeve, and a centering nut 23 is screwed to the top of the centering bolt 22. A quick-change wrench 25 is provided on the outer sleeve of the centering bolt 22, and the quick-change wrench 25 is placed between the centering nut 23 and the centering pressure plate 24.

[0046] In order to further achieve the fixing effect of the inner ring 41, the centering base 32 and the inner ring 41 are both provided with pin holes 33, and the two pin holes 33 are matched with a positioning pin.

[0047] In order to facilitate the rotation of the worm 18 , the end of the worm 18 protrudes from the sub-disk 12 , and a prism for matching a torque wrench is provided at the end of the worm 18 .

[0048] To ensure the overall securement of the outer ring 43, an outer ring pad 38 is provided on the upper edge of the clamping base 31. This pad 38 cooperates with the outer ring 43 to provide support. A clamping handle 39 is provided on the upper surface of the sub-plate 12, and this handle 39 cooperates with the outer ring 43. The clamping handle 39 can be rotated to clamp the outer ring 43 of the component 4 to be welded against the pad 38, preventing it from moving during welding.

[0049] Working Principle: Align and place the inner ring 41 of the component to be welded 4 onto the centering base 32. Initially position the inner ring 41 using the locating pins. Next, place the centering platen 24 into position and tighten the centering nut 23 using the quick-change wrench 25 to secure the inner ring 41. Next, place the outer ring 43 of the component to be welded 4 onto the outer ring spacer 38 and manually fine-tune the outer ring 43 to ensure it is properly positioned. Then, operate the clamping handle 39 to compress the bottom edge of the outer ring 43 to ensure it is secure.

[0050] Manually position blade 42, with one end contacting clamp 34 and the other end contacting auxiliary spacer 36. To tighten outer ring 43 of component 4 to be welded, use an electric torque wrench to drive worm 18, which in turn moves drive bar 17, which in turn pushes auxiliary top plate 35. The movement of auxiliary top plate 35 moves reinforcement block 373, which in turn moves top plate 374, achieving proper tension on outer ring 43. Once assembly 4 is installed, welding can begin.

Claims

1. A spoke-type casing electron beam welding flexible clamping device, the clamping device is used to clamp a component to be welded (4), the component to be welded (4) comprises an inner ring (41), blades (42) and an outer ring (43), a plurality of blades (42) are provided, and the plurality of blades (42) are circumferentially arranged between the inner ring (41) and the outer ring (43), characterized in that: It comprises a base (1) and a clamping mechanism (3); The base (1) includes a mother disk (11) and an annular disk (19), the mother disk (11) is connected to the daughter disk (12) through a zero-point positioning system (13), and the daughter disk (12) and the mother disk (11) are on the same central axis; a plurality of pads (15) are circumferentially arranged on the daughter disk (12), and a roller (14) is provided on the pad (15); an annular slide rail (16) is provided on the inner circle of the annular disk (19), and the roller (14) cooperates with the annular slide rail (16); a worm (18) is rotatably arranged on the daughter disk (12), a transmission bar (17) is provided on the bottom surface of the annular disk (19), and the transmission bar (17) is meshed with the worm (18), and a plurality of connecting members (110) are circumferentially arranged on the top surface of the annular disk (19); The clamping mechanism (3) comprises a clamping base (31) and an auxiliary top plate (35), wherein the clamping base (31) is fixedly mounted on the sub-plate (12), a centering mechanism (2) is provided at the center of the clamping base (31), a plurality of clamping members (34) are provided on the clamping base (31), and the clamping members (34) are used to clamp the blades (42), and a plurality of telescopic mechanisms (37) are further provided on the clamping base (31), and the telescopic mechanisms (37) are used to support the outer ring (43); The connecting member (110) is connected to the auxiliary top plate (35), and the auxiliary top plate (35) is provided with a plurality of protrusions (351), the outer surfaces of the protrusions (351) are inclined, and the outer surfaces of the protrusions (351) cooperate with the telescopic mechanism (37); A plurality of auxiliary pads (36) are provided on the clamping base (31), and the auxiliary pads (36) and the clamping member (34) are located on the same radius.

2. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: The centering mechanism (2) includes a centering bolt (22) and a centering base (32), wherein the centering base (32) is installed at the center of the clamping base (31), a centering circular hole (21) is opened at the center of the clamping base (31), and the centering bolt (22) is placed in the centering circular hole (21), a centering pressure plate (24) is provided on the outer sleeve of the centering bolt (22), and a centering nut (23) is screwed to the top end of the centering bolt (22); The outer sleeve of the centering bolt (22) is provided with a quick-change wrench (25), and the quick-change wrench (25) is placed between the centering nut (23) and the centering pressure plate (24).

3. The spoke-type casing electron beam welding flexible clamping device according to claim 2, characterized in that: The centering base (32) and the inner ring (41) are both provided with pin holes (33), and the two pin holes (33) are engaged with each other via a positioning pin.

4. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: The clamping base (31) is provided with a plurality of through holes in the circumferential direction, and the connecting piece (110) passes through the through holes and is connected to the auxiliary top plate (35).

5. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: The zero point positioning system (13) comprises a plurality of zero point positioning blocks, and the plurality of zero point positioning blocks are circumferentially arranged on the master disc (11).

6. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: The end of the worm (18) protrudes from the sub-disk (12), and the end of the worm (18) is provided with a prism for matching a torque wrench.

7. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: The telescopic mechanism (37) includes a telescopic pad (371), a sliding guide rail (372), a reinforcement block (373) and a top plate (374). The telescopic pad (371) is mounted on the clamping base (31), and the telescopic pad (371) is provided with a sliding guide rail (372). The sliding guide rail (372) is slidably connected to the reinforcement block (373), and the outer side of the reinforcement block (373) is provided with a top plate (374). The reinforcement block (373) cooperates with the outer surface of the protrusion (351), and the top plate (374) cooperates with the inner surface of the outer ring (43).

8. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: An outer ring pad (38) is provided at the upper edge of the clamping base (31), and the outer ring pad (38) cooperates with the outer ring (43).

9. The spoke-type casing electron beam welding flexible clamping device according to claim 1, characterized in that: A pressing handle (39) is provided on the upper surface of the sub-disc (12), and the pressing handle (39) cooperates with the outer ring (43).

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