A type correcting tool for repairing a deformed thin-walled part
By designing a support frame and hydraulic straightening jacks, the problem of local deformation during the casting of thin-walled parts was solved, achieving precise positioning and efficient straightening, adapting to complex curved surfaces, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGFA EXCELLENT MATERIALS (ZHENJIANG) TITANIUM ALLOY PRECISION FORMING CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, thin-walled parts are prone to local deformation during the casting process due to external impact and temperature gradient changes. Traditional straightening methods are difficult to control the accuracy, have poor adaptability to complex curved surfaces, and existing mechanical equipment is expensive and lacks dedicated support structures.
A calibration fixture comprising a support frame, an adjustable support assembly, and a hydraulic calibration jack was designed. Utilizing the adaptability of the positioning plate to the outer contour of the thin-walled component's wing and the properties of the flexible material, the adjustable support assembly achieves precise positioning and uniform support, while the hydraulic calibration jack applies precise calibration force to achieve accurate correction of the thin-walled component.
It achieves precise positioning and uniform support for thin-walled parts, improves the quality and efficiency of shaping, avoids secondary deformation, and adapts to the needs of deformation correction of different degrees.
Smart Images
Figure CN224574400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerospace technology, specifically a calibration fixture for repairing deformed thin-walled parts by welding. Background Technology
[0002] Currently, thin-walled parts are prone to localized deformation during the casting process due to external impacts, temperature gradient changes, and other factors, affecting their aerodynamic performance and assembly accuracy. Traditional straightening methods mainly rely on manual hammering, which presents the following challenges: the straightening accuracy is difficult to control, and secondary deformation is easily caused; for thin-walled parts with complex curved surfaces, traditional tooling has poor adaptability and cannot achieve uniform force distribution. Although some mechanical straightening equipment exists in the existing technology, it is complex in structure, expensive, and lacks a dedicated support structure for the streamlined curved surfaces of thin-walled parts. Therefore, there is an urgent need for a dedicated tooling to improve the quality and efficiency of straightening. Utility Model Content
[0003] The purpose of this invention is to provide a calibration fixture for repairing deformed thin-walled parts by welding, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a straightening fixture for repairing deformed thin-walled parts by welding, comprising a support frame, the support frame being composed of an upper support plate, a middle support plate and a lower support plate, the upper support plate and the lower support plate being uniformly and symmetrically provided with a plurality of through holes, the through holes being provided with adjustable support components, a positioning plate being provided between the adjustable support components located on the upper support plate and the adjustable support components located on the lower support plate, a hydraulic straightening jack being fixedly provided on the lower surface of the upper support plate, and a conforming block being fixedly provided at the output end of the hydraulic straightening jack.
[0005] Preferably, the adjustable support assembly includes a support rod, a stabilizing hexagonal nut is fixedly provided at the bottom end of the support rod, a circular positioning ball is fixedly provided at the section of the support rod away from the stabilizing hexagonal nut, and a force adjustment nut and a tension nut are threadedly connected to the support rod.
[0006] Preferably, the shape of the positioning plate is adapted to the outer contour of the wing of the thin-walled component, and it is made of flexible material.
[0007] Preferably, the conforming block has a mating surface that matches the theoretical contour of the area to be shaped at the wing of the thin-walled component.
[0008] Compared with the prior art, the beneficial effects of this utility model are: preliminary positioning is achieved through the positioning components preset by the positioning plate; by utilizing the adaptability of the positioning plate to the outer contour of the thin-walled part's wing and the characteristics of the flexible material, the positioning plate and the wing of the thin-walled part are tightly fitted to complete the workpiece positioning and fixing; by applying uniform support force to the inner wall of the thin-walled part through the tooling, the deformation of the part is accurately corrected, thus solving the problem of shape deviation caused by external force or temperature changes in the thin-walled part. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0010] Figure 2 This is a schematic diagram of the adjustable support component structure of this utility model.
[0011] In the diagram: 1. Support frame; 2. Upper support plate; 3. Lower support plate; 4. Through hole; 5. Adjustable support assembly; 51. Support rod; 52. Circular positioning ball; 53. Stabilizing hexagonal nut; 54. Tension nut; 55. Force adjustment nut; 6. Positioning plate; 7. Hydraulic alignment jack; 8. Conformal block. Detailed Implementation
[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0013] Please refer to 1-2. One embodiment of this utility model is provided: a straightening fixture for repairing deformed thin-walled parts by welding, including a support frame 1. The support frame 1 is composed of an upper support plate 2, a middle support plate, and a lower support plate 3. The upper support plate 2 and the lower support plate 3 are evenly and symmetrically provided with a plurality of through holes 4. Adjustable support components 5 are provided on the through holes 4. A positioning plate 6 is provided between the adjustable support components 5 located on the upper support plate 2 and the adjustable support components 5 located on the lower support plate 3. A hydraulic straightening jack 7 is fixedly provided on the lower surface of the upper support plate 2. A conforming block 8 is fixedly provided at the output end of the hydraulic straightening jack 7. The thin-walled part to be straightened is placed on the positioning plate 6, and the initial positioning is achieved by the adjustable support components 5 preset on the positioning plate 6. By utilizing the adaptability of the positioning plate 6 to the outer contour of the wing of the thin-walled part and the flexible material properties, the positioning plate 6 is made to fit tightly with the wing of the thin-walled part, thus completing the workpiece positioning and fixing.
[0014] Based on the actual deformation detection data at the wings of the thin-walled part, adjust the spatial position of the adjustable support component 5 so that the adjustable support component 5 adapts to the current shape and size of the thin-walled part, ensuring that the calibration benchmark is compatible with the workpiece state.
[0015] The adjustable support assembly 5 includes a support rod 51. A stabilizing hexagonal nut 53 is fixedly provided at the bottom end of the support rod 51. A circular positioning ball 52 is fixedly provided at the section of the support rod 51 away from the stabilizing hexagonal nut 53. A force-adjusting nut 55 and a tension nut 54 are threadedly connected to the support rod 51. The support rod 51 is adjusted to move towards the positioning plate 6 by adjusting the force-adjusting nut 55 and the tension nut 54. The positioning plate 6 and the thin-walled component wing are fixed by the circular positioning ball 52.
[0016] The positioning plate 6 is made of flexible material and its shape is adapted to the outer contour of the thin-walled part's wing. This design can ensure a tight fit with the thin-walled part's wing without damaging the surface of the thin-walled part, thus ensuring the stability of the positioning reference. Several adjustable support components 5 are used to fix the positioning plate 6 at the four corners to achieve precise positioning of the thin-walled part's wing, providing a reliable reference for subsequent calibration operations.
[0017] The conforming block 8 has a mating surface that matches the theoretical contour of the area to be shaped at the wing of the thin-walled part. The device is equipped with a hydraulic jack 7 as a driving component. The extension and retraction stroke of the force-applying column can be precisely controlled by the hydraulic jack 7, and the magnitude and direction of the shaped force can be quantitatively controlled. Based on the above structure, the conforming block 8 is driven by the hydraulic jack 7 to apply a preset pressure to the wing of the thin-walled part, which can achieve adaptive shaped shaping of the wing of the thin-walled part with different deformation amounts and meet the correction needs of different degrees of deformation.
[0018] Working principle: The thin-walled part to be shaped is placed on the positioning plate 6, and the initial positioning is achieved by the adjustable support component 5 preset on the positioning plate 6; by utilizing the adaptability of the positioning plate 6 to the outer contour of the wing of the thin-walled part and the flexible material properties, the positioning plate 6 is made to fit tightly with the wing of the thin-walled part, thus completing the positioning and fixing of the workpiece.
[0019] Based on the actual deformation detection data at the wings of the thin-walled part, adjust the spatial position of the adjustable support component 5 so that the adjustable support component 5 adapts to the current shape and size of the thin-walled part, ensuring that the calibration benchmark is compatible with the workpiece state.
[0020] The area to be shaped at the wing of the thin-walled part is heated by an external heating device; the hydraulic jack 7 drives the conforming block 8 device to apply a preset shaped force to the part to be shaped; based on the real-time monitoring of the deformation recovery data of the thin-walled part, the output pressure of the jack is dynamically adjusted to gradually correct the wing of the thin-walled part to the preset accuracy requirements.
[0021] Maintain the set pressure for 5-10 minutes until the material stress is released, then gradually depressurize and remove the tooling.
Claims
1. A sizing tool for repair welding of a deformed thin-walled part, comprising a support frame (1), characterized in that: The support frame (1) is composed of an upper support plate (2), a middle support plate and a lower support plate (3). The upper support plate (2) and the lower support plate (3) are evenly and symmetrically provided with a plurality of through holes (4). An adjustable support component (5) is provided on the through hole (4). A positioning plate (6) is provided between the adjustable support component (5) on the upper support plate (2) and the adjustable support component (5) on the lower support plate (3). A hydraulic straightening jack (7) is fixedly provided on the lower surface of the upper support plate (2). A conformal block (8) is fixedly provided at the output end of the hydraulic straightening jack (7).
2. The type correcting tool for repair welding of a deformed thin-walled part according to claim 1, characterized in that: The adjustable support assembly (5) includes a support rod (51), a stabilizing hexagonal nut (53) is fixedly provided at the bottom end of the support rod (51), a circular positioning ball (52) is fixedly provided at the section of the support rod (51) away from the stabilizing hexagonal nut (53), and a force adjustment nut (55) and a tension nut (54) are threadedly connected to the support rod (51).
3. The type correcting tool for repair welding of a deformed thin-walled part according to claim 1, characterized in that: The shape of the positioning plate (6) is adapted to the outer contour of the wing of the thin-walled part, and it is made of flexible material.
4. The type correcting tool for repair welding of a deformed thin-walled part according to claim 1, characterized in that: The conformal block (8) has a mating surface that is consistent with the theoretical contour of the area to be shaped at the wing of the thin-walled part.