A high temperature alloy three-flap casing thermal calibration device

Abstract

The utility model discloses a high-temperature alloy three-flap casing thermal calibration device, which has a simple structure and is convenient to disassemble and clamp after thermal calibration. It can still maintain good constraints on the alloy three-flap casing for thermal calibration under high temperature conditions, which is beneficial to the production of aircraft engine equipment components. It includes a positioning base, and the center of the surface of the positioning base is installed with a positioning mandrel in an interference fit manner. It is characterized in that the clamping support structure uses the positioning mandrel as the main mandrel to internally support and clamp the three-flap casing at both ends of the positioning mandrel.

Description

Technical Field

[0001] The utility model relates to the technical field of three-flap casing thermal calibration devices, in particular to a high-temperature alloy three-flap casing thermal calibration device. Background Art

[0002] The fairing casing of a certain type of aircraft engine is a three-petal combined structure casing. The three-petal casing made of ordinary materials will be severely deformed after rough machining and heat treatment. The irregular inward shrinkage of the three-petal casing along the cutting surface will make it impossible to process in subsequent processes and eventually scrap it. Therefore, the three-petal casing needs to be made of alloy. Although the alloy has the advantages of high strength and good elasticity, the shaping of the alloy cannot achieve the ideal effect under normal temperature. Therefore, the existing alloy three-petal casing heat correction device chooses to heat correct the alloy three-petal casing at high temperature, but the structure of this type of heat correction device is complicated, and the clamping and disassembly after heat correction are very complicated, and it cannot well constrain the three-petal casing under high temperature, which is not conducive to the production of aircraft engine equipment components. Utility Model Content

[0003] In view of the shortcomings of existing alloy three-flap casing thermal calibration devices, which have complex structures, are troublesome to disassemble and clamp after thermal calibration, and cannot perform thermal calibration on alloy three-flap casings well under high temperature conditions, the utility model provides a high-temperature alloy three-flap casing thermal calibration device, which has a simple structure and is convenient to disassemble and clamp after thermal calibration. It can still maintain good constraints on the alloy three-flap casing for thermal calibration under high temperature conditions, which is beneficial to the production of aircraft engine equipment components.

[0004] The utility model provides the following technical solutions:

[0005] It includes a positioning base, a positioning mandrel is installed at the center of the positioning base in an interference fit manner, and is characterized in that the clamping support structure uses the positioning mandrel as the main mandrel to internally support and clamp the three-flap casing at both end portions of the positioning mandrel.

[0006] It is further characterized by:

[0007] The clamping support structure comprises a large-end inner support ring and a small-end inner support ring, the large-end inner support ring is concentrically installed on the surface of the positioning base, the large-end inner support ring supports the side wall of the bottom of the three-flap casing, the small-end inner support ring is concentrically installed on the head of the positioning mandrel, the small-end inner support ring supports the side wall of the top of the three-flap casing, and above the small-end inner support ring, a small-end limiting cover plate and a clamping cover plate are concentrically installed on the positioning mandrel in sequence, the small-end limiting cover plate presses the top end of the three-flap casing onto the small-end inner support ring and is fixedly connected with the small-end inner support ring by bolts, the clamping cover plate is pressed onto the small-end inner support ring by tightening the nut, and the clamping cover plate has the function of limiting the axial movement of the small-end limiting cover plate;

[0008] With the positioning mandrel as the center, a number of support columns are symmetrically installed on the surface of the positioning base, and the protruding ends of the support columns are connected to adjustable support heads through threads, and the adjustable support heads are set in a ball head shape;

[0009] At the edge of the positioning base, an outer ring pressure plate is arranged on the surface of the positioning base, and the outer ring pressure plate is used to press and fix the bottom edge of the three-flap casing;

[0010] The positioning base and the small-end inner support ring are both provided with evenly distributed through-hole structures.

[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0012] The positioning base and the large-end inner support ring provide a fully enclosed continuous constraint on the large-end mounting edge of the three-flap casing, and the small-end limiting cover plate and the small-end inner support ring provide a fully enclosed continuous constraint on the top end of the three-flap casing, and maintain sufficient rigidity to ensure that the mounting edge of the three-flap casing with non-uniform deformation is effectively maintained in the required circular cavity;

[0013] The positioning mandrel is reasonably matched with the positioning base, the large end inner support ring, the small end inner support ring and the small end limit cover plate to ensure that all positioning components are concentric, and then the upper and lower ends of the three-petal constraint casing are also concentric. As the temperature rises during thermal calibration, the above-mentioned constraint state and the concentricity of the entire device will not change and will solidify in this state, and then the required roundness will be achieved after cooling, thereby achieving the purpose of calibration;

[0014] The support column and the adjustable support head provide support for the upper part of the shaping device during the thermal shaping process, increasing the rigidity of the device and preventing the device from being deformed by compression of the three-flap casing. During the disassembly process after the shaping is completed, the ball head structure is easy to rotate and can be removed very easily, avoiding the problem of the threaded fastening structure being unable to be removed due to high temperature deformation.

[0015] There are evenly distributed through-hole structures on the positioning base and the small-end inner support ring to ensure that the three-petal receiver can be easily removed even if it gets stuck due to high-temperature deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a cross-sectional view of the overall structure of the utility model

[0017] Figure 2 This is a cross-sectional view of the overall structure of the positioning base of the utility model

[0018] Figure 3 This is a top view of the overall structure of the positioning base of the utility model

[0019] Figure 4This is a top view of the overall structure of the large end inner support ring of the utility model

[0020] Figure 5 This is a top view of the overall structure of the small end inner support ring of the utility model

[0021] Figure 6 It is a cross-sectional view of the overall structure of the positioning mandrel of the utility model.

[0022] Description of reference numerals:

[0023] 1. Positioning base; 2. Inner support ring at large end; 3. Positioning mandrel; 4. Support column; 5. Adjustable support head; 6. Outer ring pressure plate; 7. Small end limit cover plate; 8. Bolt; 9. Inner support ring at small end; 10. Clamping cover plate; 11. Nut; 12. Three-flap casing. DETAILED DESCRIPTION

[0024] The utility model provides Figure 1-Figure 6 A high-temperature alloy three-flap casing thermal correction device is shown, which includes a positioning base 1, a positioning mandrel 3 is installed at the center of the positioning base 1 in an interference fit manner, and a pressing support structure uses the positioning mandrel 3 as a main mandrel to internally support and press the three-flap casing at both ends of the positioning mandrel 3;

[0025] The clamping support structure includes a large-end inner support ring 2 and a small-end inner support ring 9. The large-end inner support ring 2 is concentrically mounted on the surface of the positioning base 1. The positioning base 1 and the small-end inner support ring 9 are both provided with uniformly distributed through-hole structures to prevent the casing deformed by high temperature from being stuck in the thermal calibration device and unable to be removed. The large-end inner support ring 2 supports the side wall of the bottom of the three-flap casing 12. The small-end inner support ring 9 is concentrically mounted on the head of the positioning mandrel 3. The small-end inner support ring 9 supports the inner wall of the three-flap casing 12. The side wall of the top is supported internally and rounded. Above the small end inner support ring 9, a small end limit cover plate 7 and a clamping cover plate 10 are concentrically mounted on the positioning mandrel 3 in sequence. The small end limit cover plate 7 clamps the top end of the three-flap casing 12 onto the small end inner support ring 9 and is fixedly connected to the small end inner support ring 9 by bolts 8. The clamping cover plate 10 is pressed onto the small end inner support ring 9 by screwing the nut 11. The clamping cover plate 10 has the function of limiting the axial movement of the small end limit cover plate 7.

[0026] With the positioning mandrel 3 as the center, a number of support columns 4 are symmetrically installed on the surface of the positioning base 1. The protruding ends of the support columns 4 are connected to the adjustable support heads 5 through threads. The adjustable support heads 5 are set in a ball head shape. The ball head shape is set to be easier to rotate and convenient for disassembly. The support length is adjusted by adjusting the thread engagement length so that the adjustable support head 5 contacts the small end inner support ring 9.

[0027] At the edge of the positioning base 1 , an outer ring pressure plate 6 is provided on the surface of the positioning base 1 , and the outer ring pressure plate 6 is used to press and fix the bottom edge of the three-flap casing 12 .

[0028] Working principle of this utility model:

[0029] Refer to the instruction manual attached Figure 1-Figure 6 When using the utility model, before installing the three-flap casing 12, the positioning base 1 of the device has been assembled with the positioning mandrel 3 (interference fit), and then the large end inner support ring 2 is inserted into the positioning mandrel 3, and it is fastened to the positioning base 1 with bolts, and then the small end inner support ring 9 is installed on the positioning mandrel 3 and freely placed on the large end inner support ring 2, and then the three-flap casing 12 is installed on the large end inner support ring 2, and the bottom surface of the three-flap casing 12 is pressed against the positioning base 1 by applying pressure from the upper part, and the three-flap casing is fixed by the large end inner support ring 2. 12 The inner and outer support circles of the large ends are then pressed and fixed with the outer ring pressure plate 6, and then the small end limit cover plate 7 is installed on the positioning core shaft 3, and then the small end inner support ring 9 is lifted to just touch the inner top surface of the three-flap casing 12, followed by the four support columns 4 and the adjustable support head 5, and the screwing length of the adjustable support head 5 is adjusted so that its upper end is pressed against the small end inner support ring 9, and finally the pressing cover plate 10 is installed on the stud installed on the positioning core shaft 3 and the nut 11 is tightened, that is, the installation of the casing heat correction is completed, and it can be put into the furnace for heat correction treatment.

Claims

1. A high-temperature alloy three-flap casing thermal calibration device, comprising a positioning base, a positioning mandrel is installed at the center of the positioning base in an interference fit manner, characterized in that: The clamping support structure uses the positioning mandrel as the main mandrel and internally supports and clamps the three-flap casing at both end portions of the positioning mandrel.

2. A high-temperature alloy three-flap casing thermal correction device according to claim 1, characterized in that: The clamping support structure includes a large-end inner support ring and a small-end inner support ring, the large-end inner support ring is concentrically installed on the surface of the positioning base, the large-end inner support ring supports the side wall of the bottom of the three-flap casing, and the small-end inner support ring is concentrically installed on the head of the positioning mandrel, and the small-end inner support ring supports the side wall of the top of the three-flap casing. Above the small-end inner support ring, a small-end limiting cover plate and a clamping cover plate are concentrically installed on the positioning mandrel in sequence, the small-end limiting cover plate presses the top end of the three-flap casing against the small-end inner support ring and is fixedly connected to the small-end inner support ring by bolts, the clamping cover plate is pressed onto the small-end inner support ring by tightening the nut, and the clamping cover plate has the function of limiting the axial movement of the small-end limiting cover plate.

3. A high-temperature alloy three-flap casing thermal correction device according to claim 1 or 2, characterized in that: With the positioning core shaft as the center, a number of support columns are symmetrically installed on the surface of the positioning base, and the protruding ends of the support columns are connected to adjustable support heads through threads, and the adjustable support heads are set to be in the shape of a ball head.

4. A high-temperature alloy three-flap casing thermal correction device according to claim 3, characterized in that: At the edge of the positioning base, an outer ring pressure plate is arranged on the surface of the positioning base, and the outer ring pressure plate is used to press and fix the bottom edge of the three-flap casing.

5. A high-temperature alloy three-flap casing thermal calibration device according to claim 4, characterized in that: The positioning base and the small-end inner support ring are both provided with uniformly distributed through-hole structures.

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