Multi-purpose tool for deformation prevention and shape correction of large-size drum-shaped thin-wall casting

Abstract

The invention discloses a multi-purpose tool for deformation prevention and shape correction of a large-size drum-shaped thin-wall casting. The multi-purpose tool comprises a base assembly, a wedge pressing mechanism vertically arranged on the base assembly, an inner supporting ring annularly arranged outside the wedge pressing mechanism and an outer limiting ring annularly arranged outside the inner supporting ring. The inner tight supporting ring and the outer limiting ring are connected to the base assembly, the inner tight supporting ring is used for expanding outwards in the radial direction under the action of external force so as to evenly and tightly support the drum-shaped thin-wall casting from inside to outside in the circumferential direction, and the outer limiting ring is fixedly arranged so as to tightly surround the drum-shaped thin-wall casting from outside to inside. And external expansion deformation in the heat treatment process of the drum-shaped thin-wall casting is limited. And the wedge pressing mechanism is used for moving downwards under the adjustment of external force, so that the inner supporting ring is uniformly expanded outwards from the center of the inner supporting ring. According to the tool, switching of the fastening supporting function and the shape correcting function can be achieved, the casting supporting area is large, the supporting stability is good, local supporting deformation of the casting is not likely to be caused, meanwhile, operation is easy, and the maintenance cost is low.

Description

Technical Field

[0001] This invention relates to the field of non-ferrous metal casting technology, and in particular, to a multi-purpose tooling for preventing deformation and straightening large-sized drum-shaped thin-walled castings. Background Technology

[0002] With the increasing integration and lightweighting of aluminum-magnesium alloy castings for modern aero engines, the overall size of the castings is constantly increasing while the wall thickness is constantly decreasing, resulting in a series of castings with diameters exceeding 500mm and surface areas exceeding 6000cm². 2 Large-sized, drum-shaped, thin-walled structural components. These castings are characterized by large diameters and thin walls, often resulting in low bending stiffness at high temperatures. Currently, deformation during heat treatment has become one of the most significant factors affecting the dimensional accuracy of these castings.

[0003] To address deformation issues during heat treatment, the most direct solution is to use a heat treatment fixture with a specific structure to secure areas of the casting at high risk of deformation. Currently, a four-screw support fixture is commonly used, as shown in the attached image. Figure 8 As shown. The main problems with this tooling are as follows: First, the limited support surface for drum-shaped thin-walled castings makes it easy to cause local stress concentration during support, and the support stability is also poor. Second, the tightening force of each screw is difficult to control precisely, resulting in uneven circumferential distribution of support force, which can easily cause local support deformation of the casting. Third, the tooling installation and adjustment process is cumbersome, the operation efficiency is low, and the lack of a reliable locking mechanism leads to unstable support.

[0004] These problems make it difficult for existing tooling to meet the heat treatment requirements of current CT7-level precision castings. Therefore, it is urgent to develop a new type of heat treatment tooling to solve the problem of deformation control during the heat treatment process of large-sized drum-shaped thin-walled castings. Summary of the Invention

[0005] This invention provides a multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings, in order to solve the problems of insufficient bending stiffness and easy deformation of existing large-size drum-shaped thin-walled castings during heat treatment, as well as the technical problems of existing heat treatment tooling such as small support surface, uneven stress, inconvenient operation, and single function.

[0006] The technical solution adopted in this invention is as follows: A multi-purpose tooling for preventing deformation and straightening large-sized drum-shaped thin-walled castings includes: a base assembly that provides mounting support; a wedge clamping mechanism vertically mounted on the base assembly; an inner support ring surrounding the wedge clamping mechanism; and an outer limiting ring surrounding the inner support ring. The inner support ring and the outer limiting ring are respectively connected to the base assembly, and the annular gap between them forms an installation space for mounting the drum-shaped thin-walled casting. The inner support ring is used to expand radially outward under external force, thereby uniformly clamping the drum-shaped thin-walled casting from the inside out in the circumferential direction. The outer limiting ring is fixedly set to tighten the drum-shaped thin-walled casting from the outside in, thereby limiting the outward expansion deformation of the drum-shaped thin-walled casting during heat treatment. The wedge clamping mechanism is used to move downward under external force adjustment, thereby uniformly expanding the inner support ring from the center outward.

[0007] Furthermore, the inner support ring includes multiple inner support blocks evenly spaced along the circumference, and each inner support block is slidably connected to the base assembly in the radial direction; the inner hole of the inner support ring is an inverted conical hole with a large opening at the upper end and a small opening at the lower end, and the surface of the inclined wedge clamping mechanism that contacts the inner conical ring surface of the inverted conical hole is the outer conical ring surface; the outer ring surface of the inner support ring is an outer drum-shaped ring surface that matches the inner circumferential surface of the drum-shaped thin-walled casting.

[0008] Furthermore, the wedge clamping mechanism includes a tie rod component vertically supported at the center of the base assembly, a wedge pressure cone slidably mounted on the outer circle of the tie rod component, and an adjusting nut threaded onto the upper outer circle of the tie rod component; the outer circle of the wedge pressure cone has an outer conical ring surface, which is used to move downward under the pressure of the adjusting nut during the tightening process of the adjusting nut, so that its outer conical ring surface pushes against the inner conical ring surface of the inner support ring, thereby causing multiple inner support blocks of the inner support ring to move outward radially along the base assembly at the same time, so as to uniformly push the drum-shaped thin-walled casting outward in the circumferential direction.

[0009] Furthermore, the tie rod component includes a tie rod extending vertically upward from the bottom end of the base assembly, and a first fastening screw passing through the bottom end of the tie rod and the base assembly to fix the tie rod to the base assembly; the upper end of the tie rod has an external thread machined on its outer circle, and the wedge clamping mechanism also includes a washer passing through the upper end of the tie rod's outer circle, and an adjusting nut threadedly connected to the external thread at the upper end of the tie rod and located above the washer, for pushing the washer and then pushing the wedge clamping cone downward through the washer.

[0010] Furthermore, the wedge-shaped pressure cone includes a pressure plate and an annular cone that are sequentially fitted onto the outer circle of the tie rod along the axial direction; the outer ring surface of the annular cone forms an outer cone ring surface; the pressure plate connects to the annular cone to push the annular cone downward after bearing the force.

[0011] Furthermore, the outer edge of the pressure plate bends downward to form a lower edge and then bends inward to form an inner edge, so that an annular mounting groove is formed between the lower surface of the pressure plate and the inner edge. An mounting opening is also provided on the lower edge to expose the mounting groove. The upper end of the annular cone extends outward to form a connecting flange that matches the mounting groove. The connecting flange is inserted into or removed from the mounting groove through the mounting opening.

[0012] Furthermore, the stop end of the external thread is machined to form a limiting step; the wedge clamping mechanism also includes a limiting block fitted on the outer circle of the upper end of the pull rod, with the bottom end of the limiting block abutting against the limiting step for limiting, so that by replacing the limiting blocks with different axial height dimensions, the multi-purpose tooling can be used for heat treatment clamping of drum-shaped thin-walled castings or for straightening drum-shaped thin-walled castings.

[0013] Furthermore, the wedge clamping mechanism also includes multiple eye bolts that are detachably connected to the pressure plate. These eye bolts are used for the transfer and lifting of multi-purpose tooling that holds the drum-shaped thin-walled casting.

[0014] Furthermore, the outer limiting ring includes a plurality of outer support blocks evenly spaced along the circumference. Each outer support block is supported on the base assembly and is radially adjustable and fixed to the base assembly by a second fastening screw. The inner ring surface of the outer limiting ring is an inner drum-shaped ring surface that matches the outer circumferential surface of the drum-shaped thin-walled casting. The outer limiting ring is used to support the drum-shaped thin-walled casting in the circumferential direction to prevent the drum-shaped thin-walled casting from expanding and deforming outward during heat treatment.

[0015] Furthermore, the base assembly includes a mounting base plate and multiple support legs arranged below the mounting base plate and fixed to the mounting base plate in an adjustable height manner; the upper surface of the mounting base plate is provided with multiple first mounting grooves corresponding to multiple inner support blocks of the inner support ring, the first mounting grooves extend radially along the mounting base plate, and the inner support blocks are slidably connected to the first mounting grooves through the connectors at their bottom ends; the upper surface of the mounting base plate is provided with multiple second mounting grooves corresponding to multiple outer support blocks of the outer limit ring, the second mounting grooves extend radially along the mounting base plate, and the multiple second mounting grooves are circumferentially staggered from the multiple first mounting grooves, the outer support blocks are slidably installed in the second mounting grooves through the connectors at their bottom ends, and are fixed to the mounting base plate by multiple sets of second fastening screws.

[0016] The present invention has the following beneficial effects: When using the multi-purpose tooling of this invention, the use of the outer limiting ring allows for the tooling to be used for straightening or clamping and fixing of the casting during heat treatment, thus achieving a switch between fastening support and straightening functions, making it highly adaptable. Compared with existing screw support tooling, this invention's tooling uses the combined action of an inner supporting ring and an outer limiting ring to simultaneously tighten and fix the casting from both the inner and outer sides. The large tightening area of ​​the casting reduces the risk of local stress concentration and provides good support stability. The wedge clamping mechanism allows the inner supporting ring to be evenly expanded outward in the circumferential direction, while the outer limiting ring provides circumferential tightening, ensuring uniform force on the casting in all directions. The uniform circumferential tightening reduces the risk of local support deformation of the casting, guaranteeing the support effect and the dimensional accuracy of the casting. The support operation can be performed using the wedge clamping mechanism, making it simple and convenient. Furthermore, this invention's tooling adopts a modular design for the inner supporting ring, outer limiting ring, and wedge clamping mechanism, allowing for easy replacement of worn parts and reducing maintenance costs.

[0017] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a cross-sectional front view schematic diagram of a multi-purpose tooling for preventing deformation and straightening of large-sized drum-shaped thin-walled castings according to a preferred embodiment of the present invention; Figure 2 yes Figure 1 Top view of the intermediate pressure plate; Figure 3 yes Figure 2 Sectional view of the intermediate pressure plate along the AA direction; Figure 4 yes Figure 1 A top view of the inner support ring structure; Figure 5 yes Figure 4 BB-direction sectional view of the inner support ring; Figure 6 yes Figure 1 A top view of the mounting base plate. Figure 7 yes Figure 1 Top view of the outer and middle support blocks; Figure 8 This is a physical image of an existing screw support fixture.

[0019] Legend: 1. Base assembly; 11. Mounting base plate; 111. First mounting slot; 112. Second mounting slot; 12. Support legs; 2. Inner support ring; 202. Outer bulging annular surface; 21. Inner support block; 3. Outer limiting ring; 31. Outer support block; 311. Inner drum-shaped annular surface; 312. Adjusting groove; 32. Second fastening screw; 33. Bushing; 4. Drum-shaped thin-walled castings; 5. Wedge clamping mechanism; 51. Pull rod; 52. First fastening screw; 53. Pressure plate; 531. Mounting ring groove; 532. Mounting port; 54. Annular cone; 55. Adjusting nut; 56. Washer; 57. Limiting block; 58. Eye bolt. Detailed Implementation

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] Those skilled in the art will understand that, unless specifically stated otherwise, the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, components, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or combinations thereof. It should be understood that when we say a component is "connected" to another component, it can be directly connected to the other component or connected via an intermediate component. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items. The terms "first" and "second," etc., in this specification and claims are used to distinguish different objects, not to describe a particular order.

[0022] Reference Figure 1A preferred embodiment of the present invention provides a multi-purpose tooling for preventing deformation and straightening of large-sized drum-shaped thin-walled castings, comprising: a base assembly 1 for mounting support, a wedge clamping mechanism 5 vertically mounted on the base assembly 1, an inner support ring 2 surrounding the wedge clamping mechanism 5, and an outer limiting ring 3 surrounding the inner support ring 2. The inner support ring 2 and the outer limiting ring 3 are respectively connected to the base assembly 1, and the annular gap between them forms an installation space for mounting the drum-shaped thin-walled casting 4. The inner support ring 2 is used to expand radially outward under external force, thereby uniformly clamping the drum-shaped thin-walled casting 4 from the inside out in the circumferential direction. The outer limiting ring 3 is fixedly arranged to tighten the drum-shaped thin-walled casting 4 from the outside in, thereby limiting the outward expansion deformation of the drum-shaped thin-walled casting 4 during heat treatment. The wedge clamping mechanism 5 is used to move downward under external force adjustment, thereby uniformly expanding the inner support ring 2 outward from the center of the inner support ring 2.

[0023] When using the multi-purpose tooling of the present invention, the drum-shaped thin-walled casting 4 to be processed is first positioned on the base assembly 1, between the inner support ring 2 and the outer limiting ring 3. Then, force is applied to drive the inclined wedge clamping mechanism 5 to move downward. During the downward movement of the inclined wedge clamping mechanism 5, the inner support ring 2 is pushed outward in a uniform circumferential direction. Under the action of this pushing force, the inner support ring 2 is opened outward in a radial direction, thereby uniformly clamping the inner circumferential surface of the drum-shaped thin-walled casting 4 from the inside to the outside in a uniform circumferential direction. When using the multi-purpose tooling of the present invention to process the drum-shaped thin-walled casting... When the part 4 is being straightened, the operation must be carried out while it is warm until the drum-shaped thin-walled casting 4 cools to room temperature and the straightening is completed. When the tooling of the present invention is used in the heat treatment process of the drum-shaped thin-walled casting 4, the position of the outer limiting ring 3 must also be limited and the outer limiting ring 3 fixed to the base assembly 1. At this time, the outer limiting ring 3 tightens the drum-shaped thin-walled casting 4 from the outside to the inside. The drum-shaped thin-walled casting 4 (hereinafter referred to as "casting") is clamped between the inner supporting ring 2 and the outer limiting ring 3. At this point, the casting is tightened. Then the tooling of the present invention is put into the furnace together with the casting for heat treatment.

[0024] When using the multi-purpose tooling of this invention, the tooling can be used to straighten or clamp and fix the casting during heat treatment by adjusting whether the outer limiting ring 3 is activated, thus achieving the switching between fastening support and straightening functions, which is highly adaptable. Compared with existing screw support tooling, the tooling of this invention uses the inner supporting ring 2 and the outer limiting ring 3 to work together to simultaneously tighten and fix the casting from both the inner and outer sides. The large clamping area of ​​the casting makes it less likely to cause local stress concentration and provides good support stability. The wedge clamping mechanism 5 is used to make the inner supporting ring 2 circumferentially and evenly expand outward, while the outer limiting ring 3 is used to tighten it circumferentially, thereby achieving uniform force on the casting in all directions. The uniform circumferential clamping makes it less likely to cause local support deformation of the casting, ensuring the support effect and the dimensional accuracy of the casting. The support operation can be carried out through the wedge clamping mechanism 5, which is simple and convenient. At the same time, the tooling of this invention also adopts a modular design of the inner supporting ring 2, the outer limiting ring 3, and the wedge clamping mechanism 5, so that worn parts can be replaced at any time, reducing maintenance costs.

[0025] Optionally, such as Figure 4 and Figure 5 As shown, the inner support ring 2 includes multiple inner support blocks 21 evenly spaced circumferentially, and each inner support block 21 is radially slidably connected to the base assembly 1. The inner hole of the inner support ring 2 is an inverted conical hole with a large opening at the upper end and a small opening at the lower end. The surface of the wedge clamping mechanism 5 that contacts the inner conical ring surface of the inverted conical hole is the outer conical ring surface. Thus, during the downward movement of the wedge clamping mechanism 5, multiple inner support blocks 21 can be gradually pushed outward simultaneously and evenly from the center of the inner support ring 2, so that the casting is gradually and evenly stressed in the circumferential direction, thereby ensuring the support effect. The outer ring surface of the inner support ring 2 is an outer bulging ring surface 202 that matches the inner circumferential surface of the drum-shaped thin-walled casting 4, so as to further improve the circumferential support effect of the drum-shaped thin-walled casting 4, so that the casting is evenly stressed in the circumferential direction, and local stress concentration is not easy to occur, thereby ensuring the support effect of the casting. In this optional solution, such as Figure 4 As shown, the inner support block 21 is hollow to reduce the overall weight of the inner support ring 2.

[0026] Optionally, such as Figure 1 As shown, the wedge clamping mechanism 5 includes a tie rod member vertically supported at the center of the base assembly 1, a wedge pressure cone slidably mounted on the outer circle of the tie rod member, and an adjusting nut 55 threaded onto the upper outer circle of the tie rod member. The outer circle of the wedge pressure cone has an outer conical annular surface. The wedge pressure cone is used to move downward under the pressure of the adjusting nut 55 during the tightening process, so that its outer conical annular surface pushes against the inner conical annular surface of the inner support ring 2, thereby causing the multiple inner support blocks 21 of the inner support ring 2 to move outward radially along the base assembly 1 at the same time, so as to uniformly push the drum-shaped thin-walled casting 4 outward in the circumferential direction.

[0027] In this optional solution, such as Figure 1As shown, the pull rod assembly includes a pull rod 51 extending vertically upward from the bottom end of the base assembly 1, and a first fastening screw 52 passing through the bottom end of the pull rod 51 and the base assembly 1 to fix the pull rod 51 to the base assembly 1. The upper outer diameter of the pull rod 51 is machined with external threads. The wedge clamping mechanism 5 also includes a washer 56 passing through the upper outer diameter of the pull rod 51. An adjusting nut 55 is threaded onto the external threads at the upper end of the pull rod 51 and is located above the washer 56, used to push the washer 56 and thus push the wedge clamping cone downward through the washer 56. In this optional solution, the tie rod 51 is used to connect the base assembly 1 and the wedge cone and transmit axial force. When the adjusting nut 55 is turned, the tie rod 51 can be pulled relative to the base assembly 1 and the wedge cone, thereby causing the tie rod 51 to tighten relative to the base assembly 1 and the wedge cone, so as to force the wedge cone to move vertically downward under the action of the washer 56. The washer 56 is used to prevent the adjusting nut 55 from directly acting on the wedge cone and causing damage.

[0028] In this optional solution, such as Figure 1-3 As shown, the wedge-shaped pressure cone includes a pressure plate 53 and an annular cone 54, which are sequentially fitted onto the outer circle of the tie rod 51 along the axial direction. The outer annular surface of the annular cone 54 forms an outer cone annular surface. The pressure plate 53 is connected to the annular cone 54 to push the annular cone 54 downward after bearing force; in this optional scheme, the connection between the pressure plate 53 and the annular cone 54 facilitates the overall hoisting of both.

[0029] In this optional solution, such as Figure 2 and Figure 3 As shown, the outer edge of the pressure plate 53 bends downward to form a lower edge, and then bends inward to form an inner edge, so that an annular mounting groove 531 is formed between the lower surface of the pressure plate 53 and the inner edge. A mounting opening 532 is also provided on the lower edge to expose the mounting groove 531. The upper end of the annular cone 54 extends outward to form a connecting flange that matches the mounting groove. The connecting flange is inserted into or removed from the mounting groove through the mounting opening, thereby facilitating the connection and disassembly of the pressure plate 53 and the annular cone 54.

[0030] Preferably, such as Figure 1 As shown, the stop end of the external thread is machined to form a limiting step. Under normal circumstances, when the annular cone 54 pushes the inner support ring 2, the inner support ring 2 pushes the casting outward. Thus, under normal circumstances, it is not necessary to set a limiting step to limit the sliding position of the pressure plate 53, avoiding secondary damage to the casting caused by the pressure plate 53 pushing the annular cone 54 down excessively. The wedge clamping mechanism 5 also includes a limiting block 57 fitted on the outer circle of the upper end of the tie rod 51. The bottom end of the limiting block 57 abuts against the limiting step for limitation. By replacing the limiting block 57 with different axial height dimensions, the multi-purpose tooling can be used for heat treatment clamping of the drum-shaped thin-walled casting 4 or for straightening the drum-shaped thin-walled casting 4.

[0031] like Figure 1As shown, the tooling of this invention utilizes the central wedge clamping mechanism 5. By rotating the top adjusting nut 55, the annular cone 54 is lowered, applying an equal outward thrust to multiple inner support blocks 21 to support the inner wall of the casting. The outer limiting ring 3 on the outer side of the casting supports the outer wall of the casting, preventing deformation of the casting due to its own weight at high temperatures. In this preferred embodiment, by setting a limiting block 57, the downward movement of the annular cone 54 is limited, avoiding excessive external force on the casting and causing secondary deformation. In use, the tooling can switch between fastening and straightening functions by changing the limiting block 57 of different lengths. When fastening the casting, a slightly longer limiting block 57 is selected so that the inner support block 21 is in close contact with the inner wall of the casting when it is at its maximum stroke, achieving a fastening effect. When straightening, a slightly shorter limiting block 57 is selected to slightly increase the downward stroke of the inner support block 21, so that the inner support block 21 can evenly support the casting when it is at its maximum stroke, achieving a straightening effect.

[0032] Preferably, such as Figure 1 As shown, the wedge clamping mechanism 5 also includes a plurality of eye bolts 58 that are detachably connected to the pressure plate 53. The eye bolts 58 are used for the transfer and lifting of the multipurpose tooling that clamps the drum-shaped thin-walled casting 4.

[0033] Optionally, such as Figure 1 and Figure 7 As shown, the outer limiting ring 3 includes a plurality of outer support blocks 31 evenly spaced circumferentially. Each outer support block 31 is supported on the base assembly 1 and is radially adjustable and fixed to the base assembly 1 by a second fastening screw 32. The inner ring surface of the outer limiting ring 3 is an inner drum-shaped ring surface 311 that matches the outer circumferential surface of the drum-shaped thin-walled casting 4. The outer limiting ring 3 is used to support the drum-shaped thin-walled casting 4 circumferentially to prevent it from expanding and deforming outward during heat treatment. In this optional scheme, the function of the outer support block 31 is similar to that of the inner support block 21, both being used to fit against the wall surface of the casting to control the deformation of the casting and ensure uniform circumferential deformation. Preferably, as Figure 7 As shown, the outer support block 31 is provided with multiple adjusting grooves 312 that are concave on the end face. Each adjusting groove 312 is provided with a second fastening screw 32, so that the outer support block 31 can be adjusted radially by adjusting the position of the second fastening screw 32 relative to the adjusting groove. Preferably, as shown... Figure 1 As shown, the outer limiting ring 3 also includes a bushing 33 that is inserted into the base assembly 1 from the bottom upwards, and the second fastening screw 32 is inserted into the bushing 33 from top to bottom, so as to protect the second fastening screw 32 through the bushing 33.

[0034] Optionally, such as Figure 1 and Figure 6As shown, the base assembly 1 includes a mounting base plate 11 and multiple support legs 12 arranged below the mounting base plate 11 and fixed to the mounting base plate 11 in an adjustable manner. The support legs 12 are used to adjust the levelness and stability of the tooling as a whole. On the upper surface of the mounting base plate 11, corresponding to the multiple inner support blocks 21 of the inner support ring 2, multiple first mounting grooves 111 are provided. The first mounting grooves 111 extend radially along the mounting base plate 11, and the inner support blocks 21 are slidably connected to the first mounting grooves through the connectors at their bottom ends. On the upper surface of the mounting base plate 11, corresponding to the multiple outer support blocks 31 of the outer limit ring 3, multiple second mounting grooves 112 are provided. The second mounting grooves 112 extend radially along the mounting base plate 11, and the multiple second mounting grooves are circumferentially staggered from the multiple first mounting grooves. The outer support blocks 31 are slidably installed in the second mounting grooves through the connectors at their bottom ends, and are fixed to the mounting base plate 11 by multiple sets of second fastening screws 32.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings, characterized in that, include: The base assembly (1) that serves as a support for installation, the wedge clamping mechanism (5) that is vertically mounted on the base assembly (1), the inner support ring (2) that is arranged around the wedge clamping mechanism (5), and the outer limit ring (3) that is arranged around the inner support ring (2). The inner support ring (2) and the outer limiting ring (3) are respectively connected to the base assembly (1), and the annular gap between them forms an installation space for installing the drum-shaped thin-walled casting (4). The inner support ring (2) is used to expand outward radially under the action of external force and then uniformly tighten the drum-shaped thin-walled casting (4) from the inside to the outside in the circumferential direction. The outer limiting ring (3) is fixedly set to tighten the drum-shaped thin-walled casting (4) from the outside to the inside, so as to limit the outward expansion deformation of the drum-shaped thin-walled casting (4) during the heat treatment process. The wedge clamping mechanism (5) is used to move downward under external force adjustment, and then evenly expand the inner clamping ring (2) outward from the center of the inner clamping ring (2).

2. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 1, characterized in that, The inner support ring (2) includes multiple inner support blocks (21) evenly spaced along the circumference, and each inner support block (21) is slidably connected to the base assembly (1) in the radial direction; The inner hole of the inner support ring (2) is an inverted conical hole with a large opening at the top and a small opening at the bottom. The surface of the inclined wedge clamping mechanism (5) that contacts the inner conical ring surface of the inverted conical hole is the outer conical ring surface. The outer ring surface of the inner support ring (2) is an outer drum-shaped ring surface (202) that matches the inner circumferential surface of the drum-shaped thin-walled casting (4).

3. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 2, characterized in that, The wedge clamping mechanism (5) includes a tie rod member vertically supported at the center of the base assembly (1), a wedge clamping cone slidably mounted on the outer circle of the tie rod member, and an adjusting nut (55) threaded on the outer circle of the upper end of the tie rod member. The outer circle of the inclined wedge pressure cone has an outer conical ring surface. The inclined wedge pressure cone is used to move downward under the pressure of the adjusting nut (55) during the tightening process of the adjusting nut (55), so that its outer conical ring surface pushes against the inner conical ring surface of the inner support ring (2), thereby causing the multiple inner support blocks (21) of the inner support ring (2) to move outward along the radial direction of the base assembly (1) at the same time, so as to uniformly push the drum-shaped thin-walled casting (4) outward in the circumferential direction.

4. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 3, characterized in that, The tie rod assembly includes a tie rod (51) extending vertically upward from the bottom end of the base assembly (1) and a first fastening screw (52) passing through the bottom end of the tie rod (51) and the base assembly (1) to fix the tie rod (51) to the base assembly (1). The upper outer circle of the pull rod (51) is machined with an external thread. The wedge clamping mechanism (5) also includes a washer (56) that passes through the upper outer circle of the pull rod (51). The adjusting nut (55) is threaded to the external thread at the upper end of the pull rod (51) and is located at the upper end of the washer (56) to push the washer (56) and then push the wedge clamping cone downward through the washer (56).

5. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 4, characterized in that, The inclined wedge pressure cone includes a pressure plate (53) and an annular cone (54) that are sequentially fitted onto the outer circle of the tie rod (51) along the axial direction. The outer ring surface of the annular truncated cone (54) forms an outer cone ring surface; The pressure plate (53) is connected to the annular cone (54) to support the force and push the annular cone (54) downward.

6. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 5, characterized in that, The outer edge of the pressure plate (53) bends downward to form a lower edge and then bends inward to form an inner edge, so that an annular mounting groove is formed between the lower surface of the pressure plate (53) and the inner edge. An mounting opening is also provided on the lower edge to expose the mounting groove. The upper end of the annular cone (54) extends outward to form a connecting flange that matches the mounting annular groove. The connecting flange is inserted into or removed from the mounting annular groove through the mounting port.

7. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 5, characterized in that, The stop end of the external thread is machined to form a limiting step; The wedge clamping mechanism (5) also includes a limiting block (57) fitted on the outer circle of the upper end of the tie rod (51). The bottom end of the limiting block (57) abuts against the limiting step for limiting. By replacing the limiting block (57) with different axial height dimensions, the multi-purpose tooling can be used for heat treatment clamping of the drum-shaped thin-walled casting (4) or for straightening the drum-shaped thin-walled casting (4).

8. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 5, characterized in that, The wedge clamping mechanism (5) also includes multiple eye bolts (58) for detachably connecting the pressure plate (53), which are used for the transfer and lifting of a multipurpose tooling clamping a drum-shaped thin-walled casting (4).

9. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 2, characterized in that, The outer limiting ring (3) includes a plurality of outer support blocks (31) evenly spaced along the circumference. Each outer support block (31) is supported on the base assembly (1) and is fixed to the base assembly (1) radially adjustable by a second fastening screw (32). The inner ring surface of the outer limiting ring (3) is an inner drum-shaped ring surface that matches the outer circumferential surface of the drum-shaped thin-walled casting (4). The outer limiting ring (3) is used to support the drum-shaped thin-walled casting (4) in the circumferential direction to prevent the drum-shaped thin-walled casting (4) from expanding outward during the heat treatment process.

10. The multi-purpose tooling for preventing deformation and straightening large-size drum-shaped thin-walled castings according to claim 9, characterized in that, The base assembly (1) includes a mounting base plate (11) and multiple support legs (12) arranged below the mounting base plate (11) and fixed to the mounting base plate (11) in an adjustable manner. On the upper surface of the mounting base plate (11), there are multiple first mounting grooves on multiple inner support blocks (21) corresponding to the inner support ring (2). The first mounting grooves extend radially along the mounting base plate (11), and the inner support blocks (21) are slidably connected to the first mounting grooves through the connectors at their bottom ends. On the upper surface of the mounting base plate (11), there are multiple second mounting grooves on multiple outer support blocks (31) corresponding to the outer limit ring (3). The second mounting grooves extend radially along the mounting base plate (11), and the multiple second mounting grooves are circumferentially staggered from the multiple first mounting grooves. The outer support block (31) is slidably installed in the second mounting groove through the connector at its bottom end, and is fixed to the mounting base plate (11) by multiple sets of second fastening screws (32).

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