Welding tool for aviation intermediate case

Abstract

The utility model relates to the technical field of welding tools, in particular to an aviation intermediate case welding tool which comprises a base, a rotary workbench, a numerical control machine tool, a tool plate, a clamping mechanism and a laser welding gun. A rotary workbench is installed on the base, and a tool plate is rotationally installed on one side of the rotary workbench. A numerical control machine tool is mounted on the other side of the rotary worktable; the intermediate case comprises a front case section, a middle case section and a rear case section; the front section of the cartridge receiver is rotationally mounted on the tool plate; the casing middle section and the casing rear section are fixed on the clamping mechanism; and during welding, the laser welding gun is aligned with the welding site I and the welding site II. The welding tightness between the front casing section and the middle casing section and between the middle casing section and the rear casing section is ensured, the sections are connected firmly, the structural integrity and strength are ensured, the bearing performance of the intermediate casing is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding frock technical field, concretely relates to an aviation intermediate casing welding frock. BACKGROUND

[0002] The intermediate casing is a force bearing component in the aero-engine, is located between the fan casing and the high pressure compressor, is the connecting and transition channel of the engine, bears the overall weight, vibration, maneuvering overload and complex stress of four degrees of freedom of the engine, is used for supporting the rotor, and transmits the thrust to the airplane through the intermediate casing, the main thrust mounting joint and the auxiliary thrust mounting joint. In such a key component, the importance of welding as a connecting technology is self-evident. Welding is one of the key processes in the manufacturing process of the intermediate casing, and the welding quality directly affects the overall performance, reliability, service life and safety of the intermediate casing. SUMMARY

[0003] In view of the deficiencies in the prior art, the utility model provides an aviation intermediate casing welding frock, which aims to ensure the welding tightness of the front section of the casing and the middle section of the casing, the middle section of the casing and the rear section of the casing, firm connection of each section, structural integrity and strength, improved load bearing performance of the intermediate casing and prolonged service life.

[0004] In order to achieve the above-mentioned purpose, the utility model provides an aviation intermediate casing welding frock, which comprises a base, a rotary workbench, a numerical control machine tool, a frock plate, a clamping mechanism and a laser welding gun, the base is provided with the rotary workbench, one side of the rotary workbench is rotatably provided with the frock plate, the other side of the rotary workbench is provided with the numerical control machine tool, the intermediate casing comprises a front section of the casing, a middle section of the casing and a rear section of the casing, the front section of the casing is rotatably installed on the frock plate, the middle section of the casing and the rear section of the casing are fixed on the clamping mechanism, and the laser welding gun is aligned with welding points one and two during welding.

[0005] The utility model discloses a rotary workbench, numerical control machine tool, frock plate, clamping mechanism and laser welding gun are cooperated and set up, and during welding, welding personnel hold the laser welding gun or fix the laser welding gun on the base, the laser welding gun is aligned with the welding point, the programming personnel set the rotating speed parameter of the rotary workbench in the numerical control machine tool through the PLC program according to the welding demand, the control system controls the operation of the rotary workbench according to the set parameter when the program runs, and then the rotating speed of the intermediate casing is controlled, the laser welding gun carries out the welding operation to the intermediate casing, the welding tightness of the front section of the casing and the middle section of the casing, the middle section of the casing and the rear section of the casing is ensured, the structural integrity and strength are ensured, the firm connection of each section is ensured, the load bearing performance of the intermediate casing is improved, and the service life is prolonged.

[0006] Further, the tool plate comprises a tool base plate and a tool positioning plate; one end surface of the tool base plate is rotatably installed on the rotary worktable, and the tool positioning plate is fixedly connected to the end of the tool base plate away from the rotary worktable. After the speed of the rotary worktable is edited by the PLC program in the numerical control machine tool, the rotary worktable drives the tool base plate to rotate when rotating, the tool base plate drives the tool positioning plate to rotate, and then drives the intermediate case to rotate. The tool base plate and the tool positioning plate are cooperatively arranged to drive the intermediate case to rotate, play the roles of fixing and transmitting power, and realize the convenience of welding.

[0007] Further, the end surface of the tool positioning plate away from the tool base plate is a product positioning surface; a plurality of first threaded holes are arranged on the product positioning surface; and the case front segment is bolted to the product positioning surface. The product positioning surface and the case front segment are in a closely adhered state, ensuring the reference of the intermediate case in the horizontal direction and facilitating subsequent welding.

[0008] Further, the clamping mechanism comprises an upper pressing block and a lower supporting block; the upper pressing block is provided with a downwardly open notch portion, and the lower supporting block is provided with an upwardly open notch portion; both the notch portions are in the shape of a semicircular ring; and the two notch portions are arranged in a vertical relationship to form a through hole for the case middle segment and the case rear segment to pass through. The through hole formed between the upper pressing block and the lower supporting block can accommodate the case middle segment and the case rear segment to pass through, the clamping mechanism fixes the case middle segment and the case rear segment to the welding tool, facilitating subsequent welding; the welding tool replaces the positioning, clamping and overturning of the parts during manual assembly, improves the welding speed and production efficiency, reduces the labor intensity of workers, reduces unnecessary waste and rework, and reduces costs; fixing the workpiece by the clamping mechanism can reduce the safety risks caused by manual operation and improve production safety.

[0009] Further, the upper pressing block is provided with a second threaded hole group; and a fastening bolt group passes through the upper pressing block and the lower supporting block in sequence. The fastening bolt group can fix the case middle segment and the case rear segment in the clamping mechanism, thereby realizing accurate and reliable positioning and clamping of the workpiece, reducing the size deviation of the workpiece, and improving the accuracy of the workpiece.

[0010] Further, a ball structure is arranged on the outer edge of the through hole, the ball structure comprises a plurality of balls; and the case middle segment and the case rear segment passing through the through hole indirectly contact the balls. The friction of the rolling balls is much smaller than that of sliding friction, which can reduce the energy consumed during the rotary welding of the case front segment and the case middle segment and the case middle segment and the case rear segment, reduce the welding deformation, ensure the weld forming property, significantly reduce the process defects, improve the product quality, and reduce the manufacturing cost.

[0011] Further, the base is fixedly provided with support columns, and the support columns are provided with two or more; the top end of each support column is provided with a clamping mechanism. The support column supports the middle section and the rear section of the case, and locks the middle section and the rear section of the case in the clamping mechanism, so that the intermediate case can be positioned on the clamping mechanism more reliably and stably, thereby reducing the size deviation of the product and improving the precision and interchangeability of the part.

[0012] Further, the rotating speed of the rotating table driving the intermediate case to rotate is 3-5 revolutions per minute. The rotating speed and displacement control of the intermediate case are realized by the rotating speed of the rotating table, so as to ensure the strength and sealing performance of the weld.

[0013] Further, the rotating speed of the rotating table is consistent with the welding speed of the laser welding gun. The strength and sealing performance of the weld can be ensured, the welding quality can be ensured, the load bearing performance of the intermediate case can be improved, and the service life of the intermediate case can be prolonged.

[0014] Beneficial effects

[0015] The utility model discloses the cooperation setting of rotating table, numerical control machine tool, tooling plate, clamping mechanism and laser welding gun makes the intermediate case be in the best welding position, realizes speed and position precision control, ensures the welding tightness of the front section and the middle section of the case, the middle section and the rear section of the case, the firm connection of each section, ensures the structural integrity and strength, improves the load bearing performance of the intermediate case, prolongs the service life.

[0016] When the welding tool replaces the positioning, clamping and workpiece overturning of the manually assembled parts, the welding speed and production efficiency are improved, the production cost is reduced, and the heavy workload is reduced.

[0017] Through the cooperation of the clamping mechanism, the product positioning surface and the ball structure, the welding tool can accurately and reliably position and clamp the intermediate case workpiece, thereby reducing the workpiece size deviation, improving the precision and interchangeability, preventing and reducing the welding deformation amount, and ensuring good welding and sealing performance.

[0018] By controlling the rotating speed of the rotating table, the rotating speed of the rotating table is consistent with the welding speed of the laser welding gun, the strength and sealing performance of the weld can be ensured, the welding quality can be ensured, the load bearing performance of the intermediate case can be improved, and the service life of the intermediate case can be prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structural schematic view of the welding tool of the aviation intermediate case;

[0020] Figure 2 And Figure 3 It is the overall structure schematic view of the embodiment of the utility model;

[0021] Figure 4 It is the front view schematic view of the utility model embodiment

[0022] Figure 5 It is the side view schematic view of the aviation intermediate machine case welding tool

[0023] Figure 6 It is Figure 2 The enlarged schematic view of A

[0024] Figure 7 It is Figure 3 The enlarged schematic view of B

[0025] In the drawing: 1, base; 2, rotary workbench; 3, numerical control machine tool; 4, tooling plate; 41, tooling base plate; 42, tooling positioning plate; 421, product positioning surface; 422, first threaded hole; 5, support column; 6, intermediate machine case; 61, machine case front section; 62, machine case middle section; 63, machine case rear section; 64, welding site one; 65, welding site two; 7, clamping mechanism; 71, upper pressing block; 72, lower bearing block; 73, second threaded hole; 74, fastening bolt; 75, through hole; 8, ball structure; 81, ball; 9, laser welding gun. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, the embodiments described below are exemplary, and are intended to explain the utility model, and can not be understood as the limitation of the utility model.

[0027] Please refer to Figures 1-7 The utility model provides a technical scheme

[0028] An aviation intermediate machine case welding tool, comprising

[0029] Base 1, rotary workbench 2, numerical control machine tool 3, tooling plate 4, clamping mechanism 7 and laser welding gun 9; The rotary workbench 2 is installed on the base 1, and the tooling plate 4 is rotatably installed on one side of the rotary workbench 2; The numerical control machine tool 3 is installed on the other side of the rotary workbench 2; The intermediate machine case 6 includes machine case front section 61, machine case middle section 62 and machine case rear section 63; The machine case front section 61 is rotatably installed on the tooling plate 4; The machine case middle section 62 and machine case rear section 63 are fixed on the clamping mechanism 7; When welding, the laser welding gun 9 is aligned with welding site one 64 and welding site two 65.

[0030] The utility model discloses a rotating workbench 2, numerical control machine tool 3, tooling plate 4, clamping mechanism 7 and the cooperation setting of laser welding gun 9, when welding, welding personnel holds laser welding gun 9 or fixes laser welding gun 9 on base 1, and laser welding gun 9 aims at the welding site, and the programming personnel sets the rotating speed parameter of rotating workbench 2 in numerical control machine tool 3 according to the welding demand through PLC program, and when the program runs, the control system will control the operation of rotating workbench 2 according to the parameter set, and then control the rotating speed of intermediate machine case 6, and laser welding gun 9 carries out the welding operation to intermediate machine case 6, ensures the welding tightness of machine case front section 61 and machine case middle section 62, machine case middle section 62 and machine case rear section 63, ensures the structural integrity and strength, and the connection of each section is firm, and the load bearing performance and service life of intermediate machine case 6 are prolonged.

[0031] In the embodiment, preferably, the tooling plate 4 includes a tooling base plate 41 and a tooling positioning plate 42; one end surface of the tooling base plate 41 is rotatably installed on the rotating workbench 2, and the tooling positioning plate 42 is fixedly connected to the tooling base plate 41 away from one end of the rotating workbench 2. After the rotating speed of the rotating workbench 2 is edited through the PLC program in the numerical control machine tool 3, the rotating workbench 2 drives the tooling base plate 41 to rotate when rotating, the tooling base plate 41 drives the tooling positioning plate 42 to rotate, and then drives the intermediate machine case 6 to rotate. The tooling base plate 41 and the tooling positioning plate 42 are cooperatively arranged to drive the intermediate machine case 6 to rotate, play the roles of fixing and transmitting power, and realize the convenience of welding.

[0032] In the embodiment, preferably, the end surface of the tooling positioning plate 42 away from the tooling base plate 41 is a product positioning surface 421; a plurality of first threaded holes 422 are arranged on the product positioning surface 421; and the machine case front section 61 is bolted to the product positioning surface 421. The product positioning surface 421 and the machine case front section 61 are in a closely adhered state, ensuring the reference of the intermediate machine case 6 in the horizontal direction and facilitating subsequent welding. The first threaded holes 422 are M6 threaded holes.

[0033] In this embodiment, preferably, the clamping mechanism 7 comprises an upper pressing block 71 and a lower supporting block 72. The upper pressing block 71 is provided with a downwardly opening notch portion, and the lower supporting block 72 is provided with an upwardly opening notch portion. Both of the notch portions are in the shape of a semicircular ring, and are arranged in a top-to-bottom manner to form a through hole 75 for the middle section 62 and the rear section 63 of the casing to pass through. The through hole 75 formed between the upper pressing block 71 and the lower supporting block 72 can be used for the middle section 62 and the rear section 63 of the casing to pass through. The clamping mechanism 7 fixes the middle section 62 and the rear section 63 of the casing on the welding tool, which facilitates subsequent welding. The welding tool replaces the positioning, clamping, and turning of the parts during manual assembly, improves the welding speed and production efficiency, reduces the labor intensity of workers, reduces unnecessary waste and rework, and reduces costs. By fixing the workpiece through the clamping mechanism 7, the safety risks caused by manual operation can be reduced, and the production safety can be improved.

[0034] In this embodiment, preferably, the upper pressing block 71 is provided with a group of second threaded holes 73, and a group of fastening bolts 74 are sequentially inserted into the upper pressing block 71 and the lower supporting block 72. The group of fastening bolts 74 can fix the middle section 62 and the rear section 63 of the casing in the clamping mechanism 7, thereby achieving accurate and reliable positioning and clamping of the workpiece, reducing the dimensional deviation of the workpiece, and improving the accuracy of the workpiece. The fastening bolts 74 are M12*1.75 hexagonal bolts.

[0035] In this embodiment, preferably, the outer edge of the through hole 75 is provided with a ball structure 8, and the ball structure 8 comprises a plurality of balls 81. The middle section 62 and the rear section 63 of the casing passing through the through hole 75 indirectly contact the balls 81. The rolling friction of the balls 81 is much smaller than the sliding friction, which can reduce the energy consumed during the rotational welding of the front section 61 and the middle section 62 of the casing, the middle section 62 and the rear section 63 of the casing, reduce the welding deformation, ensure the weld formability, significantly reduce the process defects, improve the product quality, and reduce the manufacturing cost.

[0036] In this embodiment, preferably, the base 1 is fixedly installed with support columns 5, and the support columns 5 are provided with two or more. The top end of each support column 5 is provided with a clamping mechanism 7. The support columns 5 support the middle section 62 and the rear section 63 of the casing, and firmly lock the middle section 62 and the rear section 63 of the casing in the clamping mechanism 7, which ensures that the intermediate casing 6 can be more reliably and stably positioned on the clamping mechanism 7, thereby reducing the dimensional deviation of the product and improving the accuracy and interchangeability of the parts.

[0037] In this embodiment, preferably, the rotating workbench 2 drives the intermediate casing 6 to rotate at a speed of 3-5 revolutions per minute. The speed and displacement control of the intermediate casing 6 is realized through the speed of the rotating workbench 2, which ensures the strength and sealing performance of the weld.

[0038] In this embodiment, preferably, the rotating speed of the rotating table 2 is consistent with the welding speed of the laser welding gun 9. The strength and sealing of the weld can be ensured, the welding quality can be ensured, the load bearing performance of the intermediate casing 6 can be improved, and the service life of the intermediate casing 6 can be prolonged. In actual operation, the laser welding power can be reasonably selected and controlled according to specific conditions to obtain the best welding effect.

[0039] Specifically, before assembly welding, the shafts at both ends of the middle section 62 of the intermediate casing 6 are respectively positioned and assembled with the holes of the front section 61 and the rear section 63 of the intermediate casing by pinning, and are preliminarily fixed in an equal six-point spot welding manner on the positioning surface, and then are assembled on the welding tool for subsequent welding operation. When spot welding is performed manually, the straightness of the front section 61, the middle section 62 and the rear section 63 of the intermediate casing needs to be 0.1 cm to obtain the best welding effect.

Claims

1. An in-flight intermediary bin welding fixture, characterized by: It includes base (1), rotating workbench (2), numerical control machine tool (3), tooling plate (4), clamping mechanism (7) and laser welding gun (9); The base (1) is installed with rotating workbench (2), one side of rotating workbench (2) is installed with tooling plate (4); The other side of rotating workbench (2) is installed with numerical control machine tool (3); The intermediate machine cabinet (6) includes machine cabinet front section (61), machine cabinet middle section (62) and machine cabinet rear section (63); The machine cabinet front section (61) is rotatably installed on the tooling plate (4); The machine cabinet middle section (62) and machine cabinet rear section (63) are fixed on the clamping mechanism (7); When welding, the laser welding gun (9) is aligned with welding site one (64) and welding site two (65).

2. The airborne intermediate cabinet welding fixture of claim 1, wherein: The tooling plate (4) includes tooling bottom plate (41) and tooling positioning plate (42); One end face of the tooling bottom plate (41) is rotatably installed on the rotating workbench (2), and the tooling positioning plate (42) is fixedly connected to the end of the tooling bottom plate (41) away from the rotating workbench (2).

3. The aerospace interposer cartridge welding fixture of claim 2, wherein: The end face of the tooling positioning plate (42) away from the tooling bottom plate (41) is a product positioning face (421); A plurality of first threaded holes (422) are arranged on the product positioning face (421); The machine cabinet front section (61) is bolted on the product positioning face (421).

4. The airborne intermediate cabinet welding fixture of claim 1, wherein: The clamping mechanism (7) includes upper pressing block (71) and lower supporting block (72); The upper pressing block (71) is provided with a downwardly opening notch portion, and the lower supporting block (72) is provided with an upwardly opening notch portion; Both the notch portions are in the shape of a semicircular ring; The two notch portions are arranged in a vertical manner, forming a through hole (75) for the machine cabinet middle section (62) and the machine cabinet rear section (63) to pass through.

5. The aerospace interposer cartridge welding fixture of claim 4, wherein: The upper pressing block (71) is provided with a group of second threaded holes (73); The upper pressing block (71) and the lower supporting block (72) are sequentially penetrated by a group of fastening bolts (74).

6. The aerospace interposer cartridge welding fixture of claim 4, wherein: The outer edge of the through hole (75) is provided with a ball structure (8), and the ball structure (8) includes a plurality of balls (81); The machine cabinet middle section (62) and the machine cabinet rear section (63) penetrating the through hole (75) indirectly contact the balls (81).

7. The airborne intermediate cabinet welding fixture of claim 1, wherein: The base (1) is fixedly installed with support columns (5), and the support columns (5) are provided with two or more than two; Each support column (5) is provided with a clamping mechanism (7) at the top end.

8. The airborne intermediate cabinet welding fixture of claim 1, wherein: The rotating speed of the rotating workbench (2) driving the intermediate machine cabinet (6) to rotate is 3 revolutions / minute to 5 revolutions / minute.

9. The aerospace interposer cartridge welding fixture of claim 8, wherein: The rotating speed of the rotating workbench (2) is consistent with the welding speed of the laser welding gun (9).

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