Thin-wall part deformation control and shape correction device

Abstract

The thin-wall part deformation control and shape correction device comprises a lower bottom plate, a center connecting shaft, an upper abutting piece, an upper cover plate and a fastening connecting piece, the upper surface of the lower bottom plate is provided with an inner cylinder supporting part and an outer cylinder supporting part in an upward protruding mode, and the outer cylinder supporting part is arranged on the periphery of the inner cylinder supporting part in a surrounding mode; the lower end of the first part sleeves the inner cylinder supporting part; the lower end of the second part sleeves the outer cylinder supporting part; the lower end face of the first part abuts against the face where the inner cylinder supporting part is located, and the lower end face of the second part abuts against the face where the outer cylinder supporting part is located. One end of the central connecting shaft is connected to the center of the inner cylinder supporting part, and the other end is connected with the upper pressing piece; the upper abutting piece can move in the center axial direction of the center connecting shaft so as to abut against the first part. The fastening connecting piece is arranged on the outer side of the outer cylinder supporting part, one end of the fastening connecting piece is connected to the lower bottom plate, the other end of the fastening connecting piece is connected to the upper cover plate, and the fastening connecting piece is used for fixing a second part located between the upper cover plate and the outer cylinder supporting part.

Description

Technical Field

[0001] The invention belongs to the technical field of welding tooling for high-temperature alloy thin-walled parts, and particularly relates to a device for controlling deformation and straightening of thin-walled parts. Background Art

[0002] The high-temperature alloy thin-walled sheet metal parts used in the aerospace field are the core components of the engine. The part includes an outer cylinder, an annular top plate and an inner cylinder. Among them, both the outer cylinder and the inner cylinder are cylindrical structures. The diameter of the upper end of the outer cylinder is larger than that of the lower end. The outer cylinder is sleeved on the inner cylinder, and the outer cylinder and the inner cylinder are coaxially arranged. The upper ends of the outer cylinder and the inner cylinder are connected by the annular top plate.

[0003] Since the aerospace high-temperature alloy thin-walled part is welded by an outer cylinder, an annular top plate and an inner cylinder. Severe bending and twisting deformation will occur during the welding process of the above three parts, and there will be dimensional deviations after welding.

[0004] Especially for the high coaxiality requirement between the outer cylinder and the inner cylinder of this part, serious bending and twisting deformation, as well as overall axial deformation, will occur after welding, making it difficult to meet the final dimensional requirements. The overall axial deformation of the above part refers to the relative position of the outer cylinder and the inner cylinder along the central axis, and the deformation generated after welding the outer cylinder and the inner cylinder. Although conventional tooling can ensure the coaxiality of the two, there is a problem of stress concentration after welding, resulting in stress release after the part is disassembled, and axial deformation will occur in the outer cylinder and the inner cylinder.

[0005] During welding, if there is no tooling to control the deformation of the part, the deformed part after welding is large, and the part cannot meet the qualified requirements.

[0006] The conventional technical means is to correct and shape the part after welding. There are straightening marks on the surface of the corrected part, and the appearance quality is poor. The high-temperature alloy thin-walled part has a large springback, and the axial deformation is difficult to correct, resulting in a high scrap rate of the part. Due to the large size of this part, the material and processing costs are relatively high, the production cycle is long, and the scrapping of parts will greatly increase the production cost. Summary of the Invention

[0007] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a device for controlling deformation and straightening of thin-walled parts, which can ensure the coaxiality of the parts and the axial deformation of the parts, and achieve the effect of controlling the deformation of the parts after welding.

[0008] To achieve this purpose, the present invention adopts the following technical solutions:

[0009] A device for controlling deformation and straightening of thin-walled parts includes a lower bottom plate, a central connecting shaft, an upper pressing member, an upper cover plate and a fastening connecting member;

[0010] The upper surface of the lower base plate is provided with an inner cylinder support portion and an outer cylinder support portion that protrude upward. The outer cylinder support portion is disposed around the outer periphery of the inner cylinder support portion;

[0011] The lower end of the first part is sleeved on the inner cylinder support portion, and the inner cylinder support portion is used to support and position the first part; the lower end of the second part is sleeved on the outer cylinder support portion, and the outer cylinder support portion is used to support and position the second part. The second part is sleeved around the outer periphery of the first part;

[0012] The lower end surface of the first part abuts against the surface where the inner cylinder support portion is located, and the lower end surface of the second part abuts against the surface where the outer cylinder support portion is located;

[0013] One end of the central connecting shaft is connected to the center of the inner cylinder support portion, and the other end is connected to the upper pressing member;

[0014] The upper pressing member can move axially along the center axis of the central connecting shaft to press against the first part;

[0015] The fastening connecting member is disposed outside the outer cylinder support portion. One end of the fastening connecting member is connected to the lower base plate, and the other end is connected to the upper cover plate. The fastening connecting member is used to fix the second part located between the upper cover plate and the outer cylinder support portion.

[0016] Preferably, the second part includes an outer cylinder and an annular top plate. A positioning groove is provided on the lower bottom surface of the upper cover plate. The annular top plate and the top end of the outer cylinder are located in the positioning groove;

[0017] The positioning groove is used to position the upper cover plate and the outer cylinder.

[0018] Preferably, an avoidance groove is provided on the outer periphery of the upper cover plate. The avoidance groove provides a welding space for the outer cylinder and the annular top plate.

[0019] Preferably, the first part includes an inner cylinder. The inner peripheral end surface of the annular top plate abuts against the upper end surface of the inner cylinder;

[0020] A welding avoidance hole is provided at the center of the upper cover plate. The welding avoidance hole is used for welding the annular top plate and the inner cylinder; the upper pressing member can pass through the welding avoidance hole and move axially along the center axis of the central connecting shaft;

[0021] A positioning portion is provided on the inner periphery of the welding avoidance hole. The positioning portion extends downward from the bottom of the positioning groove. The outer peripheral side wall of the positioning portion abuts against both the annular top plate and the inner side wall of the upper end of the inner cylinder at the same time.

[0022] Preferably, the inner cylinder support part is circular, the outer cylinder support part is annular, and the inner cylinder support part and the outer cylinder support part are coaxially arranged along the axis of the central connection shaft.

[0023] Preferably, an installation groove is formed on the lower bottom plate, and the installation groove is arranged between the inner cylinder support part and the outer cylinder support part.

[0024] Preferably, a support platform is further arranged on the lower bottom plate, and the support platform is annularly arranged around the outer cylinder support part.

[0025] Preferably, the outer cylinder includes an outer cylinder part and an annular part. The lower end of the outer cylinder part is a third tapered part that tapers inward. The annular part is sleeved on the lower end of the outer cylinder part, and the upper end of the annular part is welded to the outer wall of the outer cylinder part. The lower end face of the annular part protrudes from the lower end face of the third tapered part.

[0026] The outer cylinder support part includes a first support part and a second support part that are sequentially arranged in a ring shape. The first support part is used to support and position the outer cylinder part, and the second support part is used to support and position the annular part.

[0027] Preferably, there are multiple fastening connection members. The multiple fastening connection members are arranged on the outer side of the outer cylinder support part and are evenly distributed along the outer circumference of the outer cylinder support part.

[0028] Preferably, the fastening connection member includes a screw head, a screw part, and a threaded part. The screw head is connected to one end of the screw part, the threaded part is arranged at the other end of the screw part. The screw part passes through the upper cover plate, the screw head presses against the upper cover plate, and the threaded part is threadedly connected to the lower bottom plate.

[0029] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the thin-walled part deformation control and straightening device positions and fixes the first part through the upper pressing member and the inner cylinder support part, positions and fixes the second part through the upper cover plate and the outer cylinder support part, and ensures the relative position of the first part and the second part through the relative position of the inner cylinder support part and the outer cylinder support part.

[0030] Since the lower end face of the first part presses against the surface where the inner cylinder support part is located, and the lower end face of the second part presses against the surface where the outer cylinder support part is located, therefore, by using the relative height of the surface where the inner cylinder support part is located and the surface where the outer cylinder support part is located along the central connection shaft, the relative position of the first part and the second part along the central axis of the central connection shaft is adjusted.

[0031] After assembling the first part and the second part, weld the first part and the second part. After welding, disassemble the tooling, and remove the welded first part and the second part. Axial deformation may occur between the first part and the second part due to reasons such as springback and welding stress concentration. If the axial deformation does not meet the requirements, the relative height of the plane where the inner cylinder support part is located and the plane where the outer cylinder support part is located along the central connecting shaft in the axial direction can be readjusted, so as to re-clamp the welded first part and the second part, use this tooling to shape the welded first part and the second part, and then remove the welded parts again, so that the central axial deformation of the two meets the requirements, thereby reducing the rejection rate of the parts.

[0032] Therefore, this tooling can solve the problems of bending and twisting deformation generated during the welding process of thin-walled parts, and can shape some parts with small axial deformation after welding. The parts are still qualified products after shaping, reducing the scrap rate of the products. In addition, the structure of this tooling is simple, and ordinary workers can operate this tooling with ordinary equipment. It can achieve positioning and control of the central axial deformation of the parts without professional personnel adjustment, greatly reducing the production cost. Brief Description of the Drawings

[0033] Figure 1 It is a schematic structural diagram of the thin-walled part deformation control and shaping device in the present invention from the first angle;

[0034] Figure 2 It is a schematic structural diagram of the thin-walled part deformation control and shaping device in the present invention from the second angle;

[0035] Figure 3 It is a sectional view of the thin-walled part deformation control and shaping device in the present invention;

[0036] Figure 4 It is a schematic structural diagram of the lower bottom plate in the present invention;

[0037] Figure 5 It is a schematic structural diagram of the upper cover plate in the present invention;

[0038] Figure 6 It is a front view of the thin-walled part deformation control and shaping device in the present invention;

[0039] Figure 7 It is a sectional view of the thin-walled part deformation control and shaping device in the present invention;

[0040] Figure 8 It is a schematic structural diagram of the superalloy thin-walled part in the present invention from the first angle;

[0041] Figure 9 It is a front view of the superalloy thin-walled part in the present invention;

[0042] Figure 10 This is a cross-sectional view of the superalloy thin-walled part in the present invention.

[0043] Among them, 10 is the superalloy thin-walled part; 101 is the inner cylinder; 102 is the outer cylinder; 1021 is the outer cylinder part; 1022 is the annular part; 103 is the annular top plate; 104 is the first conical part; 105 is the second conical part; 106 is the intermediate cylinder; 107 is the third conical part; 1 is the lower bottom plate; 11 is the inner cylinder support part; 12 is the outer cylinder support part; 121 is the first support part; 122 is the second support part; 14 is the installation groove; 15 is the support platform; 2 is the central connecting shaft; 3 is the upper pressing part; 4 is the upper cover plate; 41 is the avoidance groove; 42 is the welding avoidance hole; 43 is the positioning part; 40 is the positioning groove; 5 is the fastening connecting piece; 6 is the first fastening nut; 7 is the second fastening nut. Detailed implementation manners

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0046] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0048] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0050] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent 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 a limitation of the present invention.

[0051] As Figures 1 - 7 shown, in this embodiment, a device for controlling and correcting the deformation of a thin-walled part is provided. The device for controlling and correcting the deformation of the thin-walled part includes a lower base plate 1, a central connecting shaft 2, an upper pressing member 3, an upper cover plate 4, and a fastening connecting member 5.

[0052] Among them, an inner cylinder support portion 11 and an outer cylinder support portion 12 are provided on the upper surface of the lower base plate 1 protruding upward. The outer cylinder support portion 12 is disposed around the outer periphery of the inner cylinder support portion 11.

[0053] The lower end of the first part is sleeved on the inner cylinder support portion 11, and the inner cylinder support portion 11 is used for supporting and positioning the first part. The lower end of the second part is sleeved on the outer cylinder support portion 12, and the outer cylinder support portion 12 is used for supporting and positioning the second part. The second part is sleeved around the outer periphery of the first part.

[0054] The lower end surface of the first part abuts against the surface where the inner cylinder support portion 11 is located, and the lower end surface of the second part abuts against the surface where the outer cylinder support portion 12 is located.

[0055] One end of the central connecting shaft 2 is connected to the center of the inner cylinder support portion 11, and the other end of the central connecting shaft 2 is connected to the upper pressing member 3.

[0056] The upper pressing member 3 can move axially along the central axis of the central connecting shaft 2 to press against the first part.

[0057] Specifically, the upper pressing member 3 can directly or indirectly press against the top surface of the first part, or when the first part includes a reduced-diameter portion where the size of the upper end is larger than that of the lower end, the upper pressing member 3 presses against the reduced-diameter portion of the first part.

[0058] After the upper pressing member 3 is fastened, the upper pressing member 3 and the inner cylinder support portion 11 can fix the first part located therebetween.

[0059] The fastening connecting member 5 is disposed outside the outer cylinder support portion 12. One end of the fastening connecting member 5 is connected to the lower bottom plate 1, and the other end is connected to the upper cover plate 4. The fastening connecting member 5 is used to fix the second part located between the upper cover plate 4 and the outer cylinder support portion 12.

[0060] Specifically, the size of the inner cylinder support portion 11 is matched with the size of the lower end of the first part, and the size of the outer cylinder support portion 12 is matched with the size of the lower end of the second part, ensuring that after the first part is sleeved on the inner cylinder support portion 11, it contacts the side wall of the inner cylinder support portion 11, and after the second part is sleeved on the outer cylinder support portion 12, it contacts the side wall of the outer cylinder support portion 12.

[0061] Adjust the relative height of the surface against which the lower end surface of the first part presses and the surface against which the lower end surface of the second part presses, thereby adjusting the relative position of the first part and the second part along the central connecting shaft 2.

[0062] The above-mentioned inner cylinder support portion 11 is used to support and position the first part, and the outer cylinder support portion 12 is used to support and position the second part. Specifically, after the first part is sleeved on the inner cylinder support portion 11, the inner cylinder support portion 11 supports the first part. At the same time, since the inner side wall of the first part contacts the side wall of the inner cylinder support portion 11, the inner cylinder support portion 11 also positions the first part. Similarly, the outer cylinder support portion 12 supports and positions the second part.

[0063] In this embodiment, the thin-walled part deformation control and straightening device positions and fixes the first part through the upper pressing member 3 and the inner cylinder support portion 11, positions and fixes the second part through the upper cover plate 4 and the outer cylinder support portion 12, and ensures the relative position of the first part and the second part through the relative position of the inner cylinder support portion 11 and the outer cylinder support portion 12.

[0064] Since the lower end surface of the first part presses against the surface where the inner cylinder support portion 11 is located, and the lower end surface of the second part presses against the surface where the outer cylinder support portion 12 is located, therefore, by using the relative height of the surface where the inner cylinder support portion 11 is located and the surface where the outer cylinder support portion 12 is located along the central connecting shaft 2, the relative position of the first part and the second part along the central axis of the central connecting shaft 2 is adjusted.

[0065] After assembling the first part and the second part, weld the first part and the second part. After welding, disassemble the tooling, remove the welded first part and the second part. Axial deformation may occur between the first part and the second part due to reasons such as springback and welding stress concentration. If the axial deformation does not meet the requirements, the relative height of the surface where the inner cylinder support part 11 is located and the surface where the outer cylinder support part 12 is located along the central connecting shaft 2 in the axial direction can be readjusted, so as to reinstall and clamp the welded first part and the second part, use this tooling to shape the welded first part and the second part, and then remove the welded parts again, so that the central axial deformation of the two meets the requirements, thereby reducing the scrap rate of the parts.

[0066] Therefore, this tooling can solve the problems of bending and twisting deformation generated during the welding process of thin-walled parts, and can shape some parts with small axial deformation after welding. After shaping, they are still qualified products, reducing the scrap rate of the products. In addition, the structure of this tooling is simple, and ordinary workers can operate this tooling with ordinary equipment. It can achieve positioning and control of the central axial deformation of parts without professional personnel adjustment, greatly reducing the production cost.

[0067] Specifically, the first part in this embodiment includes an inner cylinder 101, and the second part includes an outer cylinder 102 and an annular top plate 103. Specifically, the outer cylinder 102 and the annular top plate 103 are separately arranged in this embodiment. After they are installed on this tooling, they are welded. The inner peripheral end face of the above-mentioned annular top plate 103 abuts against the upper end face of the inner cylinder 101.

[0068] In other embodiments, the outer peripheral end face of the annular top plate 103 abuts against the upper end face of the outer cylinder 102, and the two are welded. Or, the outer cylinder 102 is sleeved on the annular top plate 103, and the outer peripheral end face of the annular top plate 103 is welded to the inner side wall of the outer cylinder 102.

[0069] Preferably, a positioning groove 40 is provided on the lower bottom surface of the upper cover plate 4, and the tops of the annular top plate 103 and the outer cylinder 102 are located in the positioning groove 40. The positioning groove 40 is used to position the upper cover plate 4 and the outer cylinder 102.

[0070] In this embodiment, the structural shape of the positioning groove 40 matches the structural shape of the annular top plate 103.

[0071] Preferably, an avoidance groove 41 is provided on the outer periphery of the upper cover plate 4. This avoidance groove 41 provides a welding space for the outer cylinder 102 and the annular top plate 103, and the upper cover plate and the outer cylinder 102 are spot-welded through the provided avoidance groove 41.

[0072] Specifically, the avoidance grooves 41 are evenly distributed along the outer periphery of the upper cover plate 4, ensuring that the welding positions of the outer cylinder 102 and the annular top plate 103 are evenly arranged in the circumferential direction, further reducing the stress concentration after welding and reducing the generation of axial deformation.

[0073] Preferably, the avoidance groove 41 is an arc-shaped groove.

[0074] Preferably, a welding avoidance hole 42 is provided at the center of the upper cover plate 4. The welding avoidance hole 42 is used for welding the annular top plate 103 and the inner cylinder 101. The welding avoidance hole 42 is used to weld the inner cylinder 101 and the annular top plate 103, and the two are spot welded or locally welded.

[0075] A positioning portion 43 is provided on the inner circumference of the welding avoidance hole 42. A positioning portion 43 is provided on the inner circumference of the avoidance hole. The positioning portion 43 extends downward from the bottom of the positioning groove 40. The outer peripheral side wall of the positioning portion 43 abuts against the inner side wall of the annular top plate 103 and the upper end of the inner cylinder 101 at the same time. The positioning portion 43 is used to position the annular top plate 103 and the upper end of the inner cylinder 101.

[0076] Specifically, the positioning portion 43 extends from the inner circumference of the welding avoidance hole 42 to the center of the upper cover plate 4 and at the same time extends downward along the bottom of the avoidance groove 41.

[0077] Preferably, the positioning portions 43 are uniformly arranged along the inner circumference of the welding avoidance hole 42, and adjacent two groups of positioning portions 43 are arranged at intervals of a preset radian. This setting ensures that the welding positions of the inner cylinder 101 and the annular top plate 103 are evenly arranged in the circumferential direction, further reducing the stress concentration after welding and further reducing the axial deformation generated after welding.

[0078] Figures 8 - 10 As shown, the superalloy thin-walled part 10 in this embodiment is used for an aeroengine combustion chamber. The superalloy thin-walled part 10 includes the above-mentioned inner cylinder 101, outer cylinder 102 and annular top plate 103. The outer cylinder 102 is sleeved on the inner cylinder 101. The annular top plate 103 is horizontally arranged. The annular top plate 103 is circular. Arc portions are provided at both the inner peripheral edge and the outer peripheral edge of the annular top plate 103. The arc portion on the inner circumference of the annular top plate 103 is connected to the top end of the inner cylinder 101, and the arc portion on the outer circumference of the annular top plate 103 is connected to the top end of the outer cylinder 102.

[0079] After the arc portion on the inner circumference of the annular top plate 103 of the superalloy thin-walled part 10 is welded to the inner cylinder 101, and after the arc portion on the outer circumference of the annular top plate 103 is welded to the outer cylinder 102, the surface deformation accuracy requirements of the part are high, and there are many welding positions among the three, and a large amount of heat is generated during the welding process. The material thickness of the part is 0.5 mm, the welding method adopted by the part is butt welding, and the profile accuracy of the part is 0.1 mm.

[0080] In this embodiment, as Figures 1 - 10As shown in the figure, the inner cylinder support portion 11 and the outer cylinder support portion 12 in this embodiment are integrally provided with the lower bottom plate 1. Separately processing and then assembling the inner cylinder support portion 11, the outer cylinder support portion 12 and the lower bottom plate 1 is likely to affect the relative position accuracy between the inner cylinder support portion 11 and the outer cylinder support portion 12.

[0081] The lower end surface of the inner cylinder 101 abuts against the surface where the inner cylinder support portion 11 is located. The lower end of the inner cylinder 101 is sleeved on the inner cylinder support portion 11, and the inner side wall of the lower end of the inner cylinder 101 contacts the side wall of the outer cylinder support portion 12. The lower end surface of the outer cylinder 102 abuts against the surface where the outer cylinder support portion 12 is located. The inner side wall of the lower end of the outer cylinder 102 contacts the side wall of the outer cylinder support portion 12.

[0082] The lower end of the inner cylinder 101 is positioned by the inner cylinder support portion 11, and the lower end of the outer cylinder 102 is positioned by the outer cylinder support portion 12. The relative positions of the inner cylinder 101 and the outer cylinder 102 are ensured by the relative positions of the inner cylinder support portion 11 and the outer cylinder support portion 12.

[0083] One end of the central connecting shaft 2 is connected to the lower bottom plate 1, the upper pressing member 3 is connected to the central connecting shaft 2, and the upper pressing member 3 can move axially along the center of the central connecting shaft 2 and press against the inner cylinder 101.

[0084] One end of the fastening connecting member 5 is connected to the upper cover plate 4, and the other end is connected to the lower bottom plate 1. The upper cover plate 4 can be pressed on the upper surface of the annular top plate 103. The fastening connecting member 5 is used to fasten the upper cover plate 4 and the lower bottom plate 1, so as to fix the annular top plate 103 and the outer cylinder 102 located between the upper cover plate 4 and the lower bottom plate 1. The fastening connecting member 5 can adjust the fastening force of the upper cover plate 4 and the lower bottom plate 1 on the annular top plate 103 and the inner cylinder 101, as well as the annular top plate 103 and the outer cylinder 102.

[0085] In this embodiment, the inner cylinder 101 is sleeved on the inner cylinder support portion 11, the inner side wall of the lower end of the inner cylinder 101 contacts the side wall of the inner cylinder support portion 11. The lower end of the inner cylinder 101 is supported by the inner cylinder support portion 11, the lower end surface of the inner cylinder 101 abuts against the surface where the inner cylinder support portion 11 is located. The upper pressing member 3 can move axially along the center of the central connecting shaft 2 to press against the inner cylinder 101 and is fixed to the central connecting shaft 2. The inner cylinder 101 is fixed by the upper pressing member 3 and the lower bottom plate 1.

[0086] Meanwhile, the outer cylinder 102 is sleeved on the outer cylinder support portion 12. The inner side wall of the lower end of the outer cylinder 102 contacts the side wall of the outer cylinder support portion 12. The lower end of the outer cylinder 102 is supported by the outer cylinder support portion 12. The upper cover plate 4 presses against the upper surface of the annular top plate 103. The upper cover plate 4 presses the annular top plate 103 tightly. The annular top plate 103 presses against the inner cylinder 101 and the outer cylinder 102 at the same time. By pressing the annular top plate 103 downward with the upper cover plate 4, the lower end surface of the outer cylinder 102 presses against the surface where the outer cylinder support portion 12 is located, and the axial position of the outer cylinder 102 is in place. The lower end surface of the inner cylinder 101 presses against the surface where the inner cylinder support portion 11 is located, and the axial position of the inner cylinder 101 is in place. After that, the fastening connecting piece 5 fixes the upper cover plate 4 and the lower bottom plate 1, thereby fixing the annular top plate 103, the outer cylinder 102, and the inner cylinder 101.

[0087] In addition, the positioning portion 43 positions the upper end of the inner cylinder 101 and the annular top plate 103 at the same time, further ensuring the relative position between the two.

[0088] Preferably, the upper pressing member 3 can pass through the welding avoidance hole 42 and move along the central axis of the central connecting shaft 2, so as to facilitate the upper pressing member 3 to press against the inner cylinder 101.

[0089] In this embodiment, when the central axes of the inner cylinder 101 and the outer cylinder 102 are not coaxial, the inner cylinder support portion 11 is used to support and position the inner cylinder 101, and the outer cylinder support portion 12 is used to support and position the outer cylinder 102, which can ensure the relative position of the central axes of the inner cylinder 101 and the outer cylinder 102.

[0090] Preferably, the inner cylinder support portion 11 and the outer cylinder support portion 12 are coaxially arranged to position the inner cylinder 101 and the outer cylinder 102 coaxially, which can ensure the coaxiality of the inner cylinder 101 and the outer cylinder 102.

[0091] Further preferably, in this embodiment, the inner cylinder support portion 11 is circular, the outer cylinder support portion 12 is annular, and the inner cylinder support portion 11 and the outer cylinder support portion 12 are coaxially arranged along the axis of the central connecting shaft 2.

[0092] In this embodiment, the thin-walled part deformation control and straightening device can position and fix the inner cylinder 101 and the outer cylinder 102, ensure the relative position and the axial position of the inner cylinder 101 and the outer cylinder 102, and solve the problems of the relative position and axial deformation of the inner cylinder 101 and the outer cylinder 102 after welding.

[0093] In addition, when the axial deformation of the welded superalloy thin-walled part 10 exceeds the predetermined required value, the welded part is reinstalled into the thin-walled part deformation control and straightening device. By adjusting the relative height of the plane where the inner cylinder support part 11 is located and the plane where the outer cylinder support part 12 is located along the central axis of the central connecting shaft 2, at the same time, by tightening the fastening connector 5, the distance between the upper cover plate 4 and the lower bottom plate 1 is adjusted, that is, the fastening force between the inner cylinder 101 and the annular top plate 103, and between the outer cylinder 102 and the annular top plate 103 is adjusted, so that the lower end surface of the inner cylinder 101 of the superalloy thin-walled part 10 contacts the plane where the inner cylinder support part 11 is located, and the lower end surface of the outer cylinder 102 contacts the plane where the outer cylinder support part 12 is located. That is, the straightening force of the welded part is adjusted by the fastening connector 5, and then by flame straightening and / or maintaining for a predetermined time, the part is taken off. The thin-walled part deformation control and straightening device can straighten some parts with small axial deformation after welding, and the parts are still qualified products after straightening, reducing the rejection rate of the products.

[0094] In this embodiment, the superalloy thin-walled part 10 is a circular rotating body. Both the inner cylinder 101 and the outer cylinder 102 are circular rotating bodies.

[0095] Specifically, in this embodiment, the lower end of the inner cylinder 101 protrudes from the lower end of the outer cylinder 102. An installation groove 14 is formed on the lower bottom plate 1, and the installation groove 14 is arranged between the inner cylinder support part 11 and the outer cylinder support part 12. The inner cylinder support part 11 is coaxially arranged with the installation groove 14. The lower end of the inner cylinder 101 is sleeved on the inner cylinder support part 11, and the lower end surface of the inner cylinder 101 abuts against the bottom of the installation groove 14. Further specifically, the installation groove 14 in this embodiment is an annular groove.

[0096] In this embodiment, the inner cylinder 101 includes an intermediate cylinder body 106, a first tapered part 104 connected to the lower end of the intermediate cylinder body 106, and a second tapered part 105 connected to the upper end of the intermediate cylinder body 106. The first tapered part 104 gradually expands outward along the axial direction of the intermediate cylinder body 106 downward, and the second tapered part 105 gradually expands outward along the axial direction of the intermediate cylinder body 106 upward.

[0097] The inner cylinder support part 11 is a first conical frustum, and the inner side wall of the first tapered part 104 contacts the outer side wall of the first conical frustum. The upper pressing part 3 is inserted into the second tapered part 105 and abuts against the inner surface of the second tapered part 105. Specifically, the upper pressing part 3 is a second conical frustum, and the inner side wall of the second tapered part 105 contacts the outer side wall of the second conical frustum.

[0098] In this embodiment, the outer cylinder 102 includes an outer cylinder member 1021 and an annular member 1022. The lower end of the outer cylinder member 1021 is a third tapered portion 107 that tapers inward. The annular member 1022 is sleeved on the lower end of the outer cylinder member 1021, and the upper end of the annular member 1022 is welded to the outer wall of the outer cylinder member 1021. The lower end surface of the annular member 1022 protrudes from the lower end surface of the third tapered portion 107.

[0099] Preferably, the outer cylinder support portion 12 includes a first support portion 121 and a second support portion 122 that are sequentially arranged in a ring shape. One of the first support portion 121 and the second support portion 122 is used to support and position the outer cylinder member 1021, and the other is used to support and position the annular member 1022.

[0100] More preferably, the first support portion 121 is arranged in a ring shape on the outer periphery of the inner cylinder support portion 1, and the second support portion 122 is arranged in a ring shape on the outer periphery of the first support portion 121.

[0101] In this embodiment, the lower end of the outer cylinder member 1021 is sleeved on the first support portion 121, and the inner side wall of the lower end of the outer cylinder member 1021 is in contact with the side wall of the first support portion 121. The lower end surface of the outer cylinder member 1021 abuts against the surface where the first support portion 121 is located, that is, the lower end surface of the outer cylinder member 1021 abuts against the upper surface of the second support portion 122. The outer cylinder member 1021 is fixed by the upper cover plate 4 and the first support portion 122.

[0102] The lower end of the annular member 1022 is sleeved on the second support portion 122, and the inner side wall of the lower end of the annular member 1022 is in contact with the side wall of the second support portion 122. The lower end surface of the annular member 1022 abuts against the surface where the second support portion 122 is located, and the annular member 1022 is fixed by the upper cover plate 4 and the second support portion 122.

[0103] In this embodiment, the lower end surface of the annular member 1022 protrudes from the lower end surface of the outer cylinder member 1021. Correspondingly, the height of the first support portion 121 is less than the height of the second support portion 122.

[0104] In this embodiment, both the first support portion 121 and the second support portion 122 are circular rings.

[0105] Preferably, a support platform 15 is provided on the lower bottom plate 1. The support platform 15 is arranged in a ring shape on the outer periphery of the second support portion 122, and the second support portion 122 is located on the upper surface of the support platform 15. In this embodiment, the lower end surface of the annular member 1022 abuts against the upper surface of the support platform 15. Since the precision requirement for the surface in contact with the lower end surface of the annular member 1022 is high, the support platform 15 is provided to support the lower end surface of the outer cylinder member 1021. At the same time, the axial precision after the installation of the outer cylinder member 1021 is further ensured, and there will be no large axial deformation after welding, avoiding unqualified parts.

[0106] Preferably, there are multiple fastening connectors 5, which are arranged outside the external support part 12 and are evenly distributed along the outer circumference of the external support part 12. Specifically, there are eight groups of screw rods, and the eight groups of screw rods are evenly distributed along the circumferential direction of the upper cover plate 4.

[0107] Further preferably, the fastening connector 5 includes a screw head, a screw part, and a threaded part. The screw head is connected to one end of the screw part, the threaded part is arranged at the other end of the screw part. The screw part passes through the upper cover plate 4, the screw head presses against the upper cover plate 4, and the threaded part is threadedly connected to the lower bottom plate 1. After the outer cylinder 102 is installed, by screwing the screw rod, the lower end surface of the outer cylinder part 1021 is in contact with the surface where the first support part 121 is located, and the lower end surface of the annular part 1022 is in contact with the surface where the second support part 122 is located, so as to ensure that there will be no axial deformation between the inner cylinder 101 and the outer cylinder 102 after welding.

[0108] In other embodiments, one end of the screw rod passes through the lower bottom plate 1, and the other end is threadedly connected to the upper cover plate 4. After the outer cylinder 102 is installed, by screwing the screw rod, the lower end surface of the outer cylinder part 1021 is adjusted to be in contact with the surface where the first support part 121 is located, and the lower end surface of the annular part 1022 is in contact with the surface where the second support part 122 is located.

[0109] Preferably, the thin-walled part deformation control and straightening device further includes a first fastening nut 6. The first fastening nut 6 is threadedly connected to the central connecting shaft 2 and can press against the upper surface of the upper pressing part 3. The upper pressing part 3 is fastened by the first fastening nut 6. In other embodiments, the upper pressing part 3 is threadedly connected to the central connecting shaft 2. In this embodiment, a limiting part is provided on the central connecting shaft 2 to limit the limit position of the upper pressing part 3 moving downward along the central axis of the central connecting shaft 2.

[0110] Preferably, the thin-walled part deformation control and straightening device further includes a second fastening nut 7. The lower end of the central connecting shaft 2 is threadedly connected to the lower bottom plate 1. The second fastening nut 7 is threadedly connected to the central connecting shaft 2 and can press against the upper surface of the inner cylinder support part 11. The second fastening nut 7 locks the central connecting shaft 2.

[0111] Preferably, the materials of the upper cover plate 4 and the upper pressing part 3 are both copper, which ensures the structural strength of the upper cover plate 4 and the upper pressing part 3 and is convenient for fixing the outer cylinder 102, the inner cylinder 101, and the annular top plate 103. At the same time, during welding, it can ensure rapid heat dissipation, thereby reducing thermal deformation during the welding process.

[0112] Preferably, the material of the lower bottom plate 1 is 45 steel, which reduces the production cost while ensuring the structural strength.

[0113] The working process of the thin-walled part deformation control and straightening device in this embodiment is as follows:

[0114] The lower end of the inner cylinder 101 is sleeved on the inner cylinder support portion 11, and the lower end surface of the inner cylinder 101 abuts against the surface where the inner cylinder support portion 11 is located. An upper pressing member 3 is connected to the central connecting shaft 2. After the upper pressing member 3 abuts against the inner surface of the inner cylinder 101, the upper pressing member 3 is fixed to ensure that the lower end surface of the inner cylinder 101 is in full contact with the surface where the inner cylinder support portion 11 is located.

[0115] Since the outer cylinder member 1021 and the annular member 1022 are welded to form the outer cylinder 102, when the outer cylinder 102 is installed in the device, the outer cylinder member 1021 is sleeved on the first support portion 121, and the lower end surface of the outer cylinder member 1021 abuts against the surface where the first support portion 121 is located. The annular member 1022 is sleeved on the second support portion 122, and the lower end surface of the annular member 1022 abuts against the surface where the second support portion 122 is located. The annular top plate 103 is placed on the inner cylinder 101 and the outer cylinder 102, and the upper cover plate 4 is installed to make the upper cover plate 4 and the annular top plate 103 in full contact. The tightness of the fastening connecting member 5 and the lower bottom plate 1 is adjusted, so as to adjust the gap between the outer cylinder member 1021 and the surface where the first support portion 121 is located, and the gap between the annular member 1022 and the surface where the second support portion 122 is located, so that the lower end surface of the outer cylinder member 1021 is in full contact with the surface where the first support portion 121 is located, and at the same time, the lower end surface of the annular member 1022 is in full contact with the surface where the second support portion 122 is located.

[0116] After the installation is completed, the weld between the inner cylinder 101 and the annular top plate 103 is spot-welded, and the weld between the outer cylinder member 1021 and the annular top plate 103 is spot-welded. After the parts are welded, the tooling is disassembled, the parts are removed, and the welds between the outer cylinder member 1021 and the annular top plate 103, and between the inner cylinder 101 and the annular top plate 103 are fully welded.

[0117] After the parts are cooled, check whether the central axial deformation of the parts is qualified. Since the welded parts will have stress concentration and springback problems, the welded parts may have unqualified axial deformation. If the central axial deformation of the parts exceeds the predetermined value, the parts are reinstalled on the lower bottom plate 1, and the relative positions between the surface where the lower end surface of the inner cylinder 101 is located and the surface where the lower end surface of the outer cylinder 102 is located are adjusted. Specifically, different lower bottom plates 1 can be replaced, or gaskets can be added on the surface where the lower end surface of the inner cylinder 101 is located or on the surface outside the lower end surface of the outer cylinder 102. After the adjustment is completed, the welded parts are repositioned and fixed, and the tightness of the fastening connecting member 5 is adjusted until the welded parts are in full contact with the lower bottom plate 1, that is, the fastening force of the welded parts is adjusted. At the same time, the parts can also be corrected by flame heating and / or maintaining the parts for a predetermined time and then removing the parts.

[0118] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A thin-walled parts deformation control and shape correction device, characterized in that: It comprises a lower base plate (1), a central connecting shaft (2), an upper pressing member (3), an upper cover plate (4) and a fastening connecting member (5); The upper surface of the lower base plate (1) is protruding upwards and is provided with an inner cylinder support portion (11) and an outer cylinder support portion (12), wherein the outer cylinder support portion (12) is arranged around the outer periphery of the inner cylinder support portion (11); The lower end of the first part is sleeved on the inner tube support part (11), and the inner tube support part (11) is used to support and position the first part; the lower end of the second part is sleeved on the outer tube support part (12), and the outer tube support part (12) is used to support and position the second part, and the second part is sleeved on the outer periphery of the first part; The lower end surface of the first part is pressed against the surface where the inner tube support portion (11) is located, and the lower end surface of the second part is pressed against the surface where the outer tube support portion (12) is located; One end of the central connecting shaft (2) is connected to the center of the inner cylinder support portion (11), and the other end is connected to the upper pressing member (3); The upper pressing member (3) is capable of moving along the central axis of the central connecting shaft (2) to press against the first part; The fastening connector (5) is arranged on the outside of the outer cylinder support portion (12), one end of the fastening connector (5) is connected to the lower base plate (1), and the other end is connected to the upper cover plate (4), and the fastening connector (5) is used to fix the second part located between the upper cover plate (4) and the outer cylinder support portion (12).

2. The thin-walled parts deformation control and shape correction device according to claim 1 is characterized in that: The second part comprises an outer cylinder (102) and an annular top plate (103); a positioning groove (40) is provided on the lower bottom surface of the upper cover plate (4); and the top ends of the annular top plate (103) and the outer cylinder (102) are located in the positioning groove (40); The positioning groove (40) is used to position the upper cover plate (4) and the outer cylinder (102).

3. The thin-walled parts deformation control and shape correction device according to claim 2 is characterized in that: An escape groove (41) is provided on the outer periphery of the upper cover plate (4), and the escape groove (41) provides a welding space for the outer cylinder (102) and the annular top plate (103).

4. The thin-walled parts deformation control and shape correction device according to claim 2, characterized in that: The first part comprises an inner cylinder (101), and the inner circumferential end surface of the annular top plate (103) is pressed against the upper end surface of the inner cylinder (101); A welding avoidance hole (42) is provided at the center of the upper cover plate (4), and the welding avoidance hole (42) is used for welding the annular top plate (103) and the inner cylinder (101); the upper pressing member (3) can pass through the welding avoidance hole (42) and move along the central axial direction of the central connecting shaft (2); A positioning portion (43) is provided on the inner periphery of the welding avoidance hole (42), and the positioning portion (43) extends downward from the bottom of the positioning groove (40), and the outer peripheral side wall of the positioning portion (43) is pressed against the inner side wall of the upper end of the annular top plate (103) and the inner side wall of the inner cylinder (101) at the same time.

5. The thin-walled parts deformation control and shape correction device according to claim 1, characterized in that: The inner tube support part (11) is circular, the outer tube support part (12) is annular, and the inner tube support part (11) and the outer tube support part (12) are coaxially arranged along the axis of the central connecting shaft.

6. The thin-walled parts deformation control and shape correction device according to claim 4, characterized in that: The lower base plate (1) is provided with a mounting groove (14), and the mounting groove (14) is arranged between the inner tube support portion (11) and the outer tube support portion (12).

7. The thin-walled parts deformation control and shape correction device according to claim 1, characterized in that: A support platform (15) is also provided on the lower base plate (1), and the support platform (15) is arranged around the outer cylinder support portion (12).

8. The thin-walled parts deformation control and shape correction device according to claim 4, characterized in that: The outer cylinder (102) comprises an outer cylinder member (1021) and an annular member (1022); the lower end of the outer cylinder member (1021) is a third conical portion (107) closing inwardly; the annular member (1022) is sleeved on the lower end of the outer cylinder member (1021); the upper end of the annular member (1022) is welded to the outer wall of the outer cylinder member (1021); and the lower end surface of the annular member (1022) protrudes from the lower end surface of the third conical portion (107); The outer cylinder support portion (12) comprises a first support portion (121) and a second support portion (122) which are arranged in sequence in an annular manner, wherein the first support portion (121) is used to support and position the outer cylinder member (1021), and the second support portion (122) is used to support and position the annular member (1022).

9. The thin-walled parts deformation control and shape correction device according to any one of claims 1 to 8, characterized in that: The fastening connectors (5) include a plurality of fastening connectors (5), which are arranged on the outside of the outer cylinder support portion (12) and are evenly distributed along the outer circumference of the outer cylinder support portion (12).

10. The thin-walled parts deformation control and shape correction device according to any one of claims 1 to 8, characterized in that: The fastening connector (5) comprises a screw head, a screw portion and a threaded portion, wherein the screw head is connected to one end of the screw portion, and the threaded portion is arranged at the other end of the screw portion, the screw portion passes through the upper cover plate (4), the screw head is pressed against the upper cover plate (4), and the threaded portion is threadedly connected to the lower base plate (1).

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