A device, apparatus and method for reducing distortion interference of thin-walled parts
By employing a double-end positioning design for thin-walled parts, the problem of inaccurate positioning caused by torsional deformation during the machining of large-sized thin-walled blade-like parts was solved, achieving an efficient and stable machining process and improving the manufacturing precision and efficiency of aero-engine parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AECC AVIATION POWER CO LTD
- Filing Date
- 2025-07-07
- Publication Date
- 2026-07-28
AI Technical Summary
In the prior art, large-sized thin-walled blade-type parts are subject to torsional deformation during processing, which causes the relative angle of the process boss reference plane to deviate, resulting in inaccurate and unstable positioning, increasing process complexity and processing cycle.
A device for reducing deformation interference of thin-walled parts is adopted. Through the combined design of a first positioning block, a first clamping block, a second positioning block, and a second clamping block, the device achieves double-end positioning of the large-end process rectangular block and the small-end process square block of the thin-walled part. The clamping force is evenly distributed in two vertical directions to counteract torsional deformation.
It effectively reduces the offset of the positioning center point of the process boss at both ends of the part deformation, improves the consistency of clamping and the accuracy of machining, avoids positioning slippage or disengagement, simplifies the operation process, and improves machining efficiency and quality.
Smart Images
Figure CN120734772B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aero-engine parts processing technology, specifically to a device, equipment, and method for reducing deformation interference of thin-walled parts. Background Technology
[0002] Aero-engines are the core power components of modern aircraft. As highly complex and precise thermodynamic machines, their technological development directly drives the progress of the aviation industry. Large-sized thin-walled blades undertake crucial functions such as energy conversion, airflow compression, and thrust generation. They are core components in high-end equipment such as aero-engines and gas turbines, and their manufacturing precision and performance directly affect the efficiency, reliability, and lifespan of the equipment. As aero-engines develop towards higher thrust-to-weight ratios, lower fuel consumption, and longer lifespans, the design complexity, material properties, and manufacturing precision requirements of blades are constantly increasing. The machining technology of thin-walled blades has become a key bottleneck restricting breakthroughs in engine performance.
[0003] Large-sized thin-walled blades, characterized by millimeter-level thin-walled structures, micrometer-level surface precision, and nanometer-level surface integrity, convert fuel chemical energy into mechanical kinetic energy under harsh conditions of extreme temperature, pressure, and speed. Their manufacturing quality directly determines the engine's aerodynamic efficiency, structural lifespan, and vibration characteristics. These parts typically feature complex three-dimensional aerodynamic surfaces, variable cross-section torsional geometry, and extremely thin walls (less than 1 mm in some areas). Furthermore, they are often made of high-strength, difficult-to-machine alloys, making them typical low-stiffness components. Therefore, the core challenge in manufacturing large-sized thin-walled blades, from forged blanks to precision finished products, is the systematic control of machining deformation. The current machining process for large, thin-walled blades used in aero-engines typically employs a multi-process route: "forging blank → rough machining → heat treatment → semi-finishing → aging → finish machining." A forging blank with a certain allowance offset from the final finished surface is usually used as the blank. To facilitate blank inspection and positioning during machining, square process bosses are pre-installed at both ends of the forging. Due to the requirements of the machining location, the process boss on the blade tip side (hereinafter referred to as the small-end process square block) is often smaller than the process boss on the tenon side (hereinafter referred to as the large-end process rectangular block). During the step-by-step machining process from the forging blank to the final finished product, heat treatment and aging are used to release cutting stress. Due to the structural characteristics of large, thin-walled parts, the part will undergo torsional deformation after the internal stress is released, causing a relative angular deviation between the reference planes of the small-end process square block and the large-end process rectangular block. Figure 1 If the fixture positioning surface cannot be completely fitted with the subsequent machining process, such as... Figure 2When the large-end rectangular process block is clamped plane-to-plane in the theoretical fixture, the two positioning planes of the small-end square process block will inevitably fail to align with the theoretical fixture. If the small-end square process block is forcibly clamped, it will inevitably cause deformation of the part and affect the positional relationship of the machined part relative to the part after machining. This results in inaccurate and unstable positioning in subsequent machining processes. During machining, the cutting force can cause positioning slippage or detachment, leading to poor consistency in part machining. To ensure the accuracy of the final precision machining positioning, it is usually necessary to correct or re-machine the positioning datum of the deformed process bosses at both ends. This not only increases the complexity of the process but also extends the machining cycle. Summary of the Invention
[0004] In view of the problem in the prior art that the relative angle between the reference plane of the process boss at both ends of the blade tenon and the blade tip is deviated due to the torsional deformation of the parts, the present invention provides a device, equipment and method for reducing the deformation interference of thin-walled parts.
[0005] To achieve the above objectives, the present invention employs the following technical solution: This invention provides a device for reducing deformation interference of thin-walled parts, comprising a base plate, a first positioning block at one end of the base plate, a first clamping block on the first positioning block, the first positioning block and the first clamping block cooperating to clamp a large-end process rectangular block of the part to be positioned, and both the first positioning block and the first clamping block are in contact with the surface of the large-end process rectangular block of the part to be positioned; a second positioning block at the other end of the base plate, a second clamping block on the second positioning block, the second positioning block and the second clamping block cooperating to clamp a small-end process square block of the blade of the part to be positioned; the second positioning block includes a first arc segment and a second arc segment connected to each other, the first arc segment and the second arc segment being tangent to one side of the small-end process square block of the blade of the part to be positioned, and the tangents being perpendicular to each other; R > L / 2, where R is the radius of the first arc segment or the second arc segment; L is the side length of the small-end process square block of the blade of the part to be positioned.
[0006] Optionally, 2L > R > L.
[0007] Optionally, a third arc segment is provided between the first arc segment and the second arc segment.
[0008] Optionally, the third arc segment has the opposite bending direction to the first and second arc segments.
[0009] Optionally, the first clamping block is hinged to the first positioning block.
[0010] Optionally, the free end of the first clamping block is connected to the first positioning block by a screw.
[0011] Optionally, it also includes a third clamping block, which is connected to the second positioning block and is used to clamp the remaining surface of the small end process square block of the blade of the part to be positioned after the second positioning block and the second clamping block cooperate to clamp it.
[0012] Optionally, both the second and third positioning blocks are connected to the second positioning block by screws.
[0013] A thin-walled parts processing equipment includes the above-mentioned device for reducing deformation interference of thin-walled parts.
[0014] A method for machining thin-walled parts using the aforementioned device for reducing deformation interference of thin-walled parts includes: The large end of the process rectangular block of the part to be positioned is aligned with the first positioning block, and the large end of the process rectangular block of the part to be positioned is pressed and positioned by the first clamping block. Place the small end process square block of the blade of the part to be positioned on the second arc segment of the second positioning block, so that both the first arc segment and the second arc segment are tangent to one side of the small end process square block of the blade of the part to be positioned. Then, cooperate with the second clamping block to clamp and position the small end process square block of the blade of the part to be positioned, thus completing the positioning of the part to be positioned. The machined parts of the positioned part are machined until all parts are machined, thus completing the machining of the thin-walled part.
[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a device for reducing deformation interference of thin-walled parts. The device achieves double-end positioning of the large-end process rectangular block and the small-end process square block of the thin-walled part through the arrangement of a first positioning block, a first clamping block, a second positioning block and a second clamping block. This effectively disperses the clamping force, reduces stress concentration caused by single-point positioning, and reduces the risk of deformation of the thin-walled part due to uneven local stress. The first arc segment and the second arc segment of the second positioning block are tangent to one side of the small-end process square block, and the tangents are perpendicular to each other. This design ensures that the clamping force is evenly distributed in two vertical directions, effectively offsetting the problem of misalignment between the part's process boss and the positioning block caused by torsional deformation due to cutting force or thermal stress. When the side length of the square block at the small end of the blade is L and the torsional deformation angle is A, mathematical calculations show that, compared to the traditional planar positioning method, the offset of the center position of the thin-walled part after positioning by this device is reduced in both the horizontal and vertical directions by (cosA-sinA)*tanA*L / 2. This effectively reduces the offset of the positioning center point of the process boss at both ends of the part's deformation, improves the consistency of part clamping, ensures the accuracy and stability of positioning in subsequent machining processes, avoids positioning slippage or disengagement caused by cutting force during machining, and eliminates the need for secondary correction or rework of the positioning datum. The device is simple to operate and highly efficient. This device provides an innovative solution for the high-precision machining of thin-walled parts in high-end equipment manufacturing, with significant technical advantages and economic benefits.
[0016] With 2L>R>L, the geometric and mechanical optimization of the second positioning block can effectively ensure stable contact between the arc segment and the process boss, avoid stress concentration, and minimize the offset of the process boss center through uniform distribution of clamping force and torsional deformation, thus ensuring the accuracy and reliability of long-term processing.
[0017] A third arc segment is provided between the first arc segment and the second arc segment. The bending direction of the third arc segment is opposite to that of the first arc segment and the second arc segment. This not only facilitates the processing transition between the first arc segment and the second arc segment and reduces the processing difficulty, but also avoids interference between the top corner of the small-end process square block and the second positioning block, thereby avoiding positioning failure or damage to the parts.
[0018] The first clamping block is hinged to the first positioning block, and the free end of the first clamping block is connected to the first positioning block by screws. In the thin-walled part deformation interference suppression device, the first clamping block and the first positioning block adopt a composite connection method combining hinge and screw connection, which realizes the flexibility of clamping force adjustment, the stability of positioning, and the convenience of maintenance.
[0019] It also includes a third clamping block, which is connected to the second positioning block and is used to clamp the remaining surface of the small end process square block of the blade part after the second positioning block and the second clamping block have cooperated to clamp it. Through the cooperation of the third clamping block, the second positioning block, and the second clamping block, the remaining surface of the small end process square block of the blade is clamped after the initial positioning is completed, realizing multi-area and multi-directional precise clamping, further ensuring the stability and accuracy of thin-walled parts processing, and significantly improving the processing quality and efficiency of thin-walled blade parts, especially suitable for the manufacturing of high-precision, high-value-added parts such as aero-engine blades.
[0020] Both the second and third positioning blocks are connected to the second positioning block by screws. The screw connection provides rigid constraints, ensuring the stability of the positioning block during the machining of the part, and is easy to disassemble and install. It can be applied to the positioning requirements of different types of blades and has low processing costs.
[0021] The present invention also provides a thin-walled parts processing equipment, including the above-mentioned device for reducing deformation interference of thin-walled parts. During the processing, the equipment can achieve good consistency and high processing accuracy due to the precise and stable clamping and positioning of the thin-walled parts. The vibration and deformation of the parts are controllable, avoiding rework or scrap due to quality problems. It solves the deformation problem in the processing of thin-walled parts, significantly improving the processing capabilities and economic benefits in high-end manufacturing fields such as aerospace and energy. It is especially suitable for high-precision, multi-variety, and small-batch production scenarios.
[0022] The present invention also provides a method for processing thin-walled parts using the above-mentioned device. The method involves placing the large-end rectangular process block of the part to be positioned against a first positioning block, and using a first clamping block to clamp and position the large-end rectangular process block of the part to be positioned. Then, the small-end rectangular process block of the blade of the part to be positioned is placed on the second arc segment of the second positioning block, such that both the first and second arc segments are tangent to one side of the small-end rectangular process block of the blade of the part to be positioned. The second clamping block is then used to clamp and position the small-end rectangular process block of the blade of the part to be positioned, thus completing the positioning of the part to be positioned. Finally, the positioned part to be positioned is processed in the processing areas until all parts are processed, thus completing the processing of the thin-walled part. This method uses multi-region collaborative positioning and clamping technology to accurately position the geometric features (such as large-end process rectangular blocks and small-end process square blocks) of thin-walled parts (such as aero-engine blades), improving the clamping and positioning accuracy of thin-walled parts. It can effectively avoid the problem of relative angular deviation between the reference planes of the process bosses at both ends of the blade tenon and blade tip caused by the torsional deformation of the parts after the release of internal stress, thereby ensuring the consistency of part processing. The method is simple, with a high part processing qualification rate and high processing efficiency. Attached Figure Description
[0023] Figure 1This diagram illustrates the relative angular deviation between the small-end process square block and the large-end process rectangular block during the machining of thin-walled parts. In the diagram, a) shows the theoretical angle between the small-end process square block and the large-end process rectangular block, and b) shows the relative torsional angle deviation between the small-end process square block and the large-end process rectangular block after deformation.
[0024] Figure 2 This is a schematic diagram illustrating the inability of the fixture positioning surface to align with the small-end process square block during subsequent machining positioning.
[0025] Figure 3 This is a schematic diagram of a device for reducing deformation interference of thin-walled parts according to the present invention.
[0026] Figure 4 This is a left view of a device for reducing deformation interference of thin-walled parts according to the present invention.
[0027] Figure 5 This is a clamping state diagram of a device for reducing deformation interference of thin-walled parts according to the present invention.
[0028] Figure 6 for Figure 5 The left view.
[0029] Figure 7 This is a flowchart of the method for processing thin-walled parts using the above-described apparatus according to the present invention.
[0030] Among them, 1-base plate, 2-first positioning block, 3-first clamping block, 4-part to be positioned, 5-second positioning block, 6-second clamping block, 7-third clamping block, 51-first arc segment, 52-second arc segment, 53-third arc segment. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.
[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0034] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0035] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0036] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.
[0037] The present invention will be further described in detail below with reference to specific embodiments. These descriptions are for explanation purposes only and are not intended to limit the scope of the invention.
[0038] The current machining process for large, thin-walled blades used in aero-engines typically employs a multi-process route: "forging blank → rough machining → heat treatment → semi-finishing → aging → finish machining." A forging blank with a certain allowance offset from the final finished surface is usually used as the blank. To facilitate blank inspection and positioning during machining, square process bosses are pre-installed at both ends of the forging. Due to the requirements of the machining location, the process boss on the blade tip side (hereinafter referred to as the small-end process square block) is often smaller than the process boss on the tenon side (hereinafter referred to as the large-end process rectangular block). During the step-by-step machining process from the forging blank to the final finished product, heat treatment and aging are used to release cutting stress. Due to the structural characteristics of large, thin-walled parts, the part will undergo torsional deformation after the internal stress is released, causing a relative angular deviation between the reference planes of the small-end process square block and the large-end process rectangular block. Figure 1; the positioning surface of the fixture cannot be completely fitted with the subsequent machining process, such as Figure 2 When the large-end rectangular process block is clamped plane-to-plane in the theoretical fixture, the two positioning planes of the small-end square process block will inevitably fail to align with the theoretical fixture. If the small-end square process block is forcibly clamped, it will inevitably cause deformation of the part and affect the positional relationship of the machined part relative to the part after machining. If the deformed process bosses at both ends are used for positioning, it will cause inaccurate and unstable positioning in subsequent machining processes. During machining, the cutting force will cause the positioning to slip or detach, resulting in poor consistency of the part machining. To ensure the accuracy of the final precision machining positioning of the part, it is usually necessary to correct or re-machine the positioning datum of the deformed process bosses at both ends, which not only increases the complexity of the process but also prolongs the machining cycle.
[0039] To address the above problems, this invention discloses a device for reducing deformation interference in thin-walled parts, see [link to relevant documentation]. Figure 3 and Figure 4 The system includes a base plate 1, one end of which is provided with a first positioning block 2. A first clamping block 3 is provided on the first positioning block 2. The first positioning block 2 and the first clamping block 3 cooperate to clamp the large end process rectangular block of the part to be positioned 4, and both the first positioning block 2 and the first clamping block 3 are in contact with the surface of the large end process rectangular block of the part to be positioned 4. Preferably, the first clamping block 3 is hinged to the first positioning block 2, and the free end of the first clamping block 3 is connected to the first positioning block 2 by screws. A second positioning block 5 is provided at the other end of the base plate 1. A second clamping block 6 and a third clamping block 7 are provided on the second positioning block 5. The second positioning block 5 and the third clamping block 7 cooperate with the second clamping block 6 to fully enclose and clamp the small-end process square block of the blade of the part to be positioned 4. The second positioning block 5 includes a first arc segment 51, a third arc segment 53 and a second arc segment 52 connected in sequence. The first arc segment 51 and the second arc segment 52 are both tangent to one side of the small-end process square block of the blade of the part to be positioned 4, and the tangents are perpendicular to each other. R > L / 2, preferably 2L > R > L, where R is the radius of the first arc segment 51 or the second arc segment 52; L is the side length of the small-end process square block of the blade of the part to be positioned 4. The third arc segment 53 has the opposite bending direction to the first arc segment 51 and the second arc segment 52. In addition to simplifying the processing of the first arc segment 51 and the second arc segment 52, it can also avoid the top corner of the small-end process square block of the blade of the part to be positioned 4, so as to avoid damage to the part. Preferably, both the second positioning block 6 and the third positioning block 7 are connected to the second positioning block 5 by screws.
[0040] See Figure 5 and Figure 6During the clamping process, the large end rectangular surface of the part to be positioned 4 is aligned with the first positioning block 2, and the large end rectangular surface of the part to be positioned 4 is pressed and positioned by the first clamping block 3. The first clamping block 3 and the first positioning block 2 are fixed. Then, the small end rectangular surface of the blade of the part to be positioned 4 is placed on the second arc segment 52 of the second positioning block 5, so that the first arc segment 51 and the second arc segment 52 are both tangent to one side of the small end rectangular surface of the blade of the part to be positioned 4. The second clamping block 6 and the third clamping block 7 are used in conjunction with the second positioning block 5 to press and position the small end rectangular surface of the blade of the part to be positioned 4, thus completing the positioning of the part to be positioned 4.
[0041] This device achieves dual-end positioning of the large-end process rectangular block and the small-end process square block of the blade for thin-walled parts, effectively dispersing the clamping force. The first arc segment 51 and the second arc segment of the second positioning block 5 are tangent to one side of the small-end process square block, and the tangents are perpendicular to each other, ensuring that the clamping force is evenly distributed in two vertical directions. This effectively counteracts torsional deformation caused by cutting force or thermal stress. When the side length of the small-end process square block is L and the torsional deformation angle is A, mathematical calculations show that, compared to traditional planar positioning methods, the center position of the thin-walled part after positioning by this device has a reduced offset in both the horizontal and vertical directions (cosA-sinA)*tanA*L / 2. This effectively reduces the offset of the positioning center point of the process bosses at both ends of the part's deformation, improves the consistency of part clamping, ensures the accuracy and stability of positioning in subsequent machining processes, and avoids positioning slippage or disengagement caused by cutting force during processing. The device is simple to operate and highly efficient.
[0042] The present invention also provides a thin-walled parts processing equipment, including the above-mentioned device for reducing deformation interference of thin-walled parts. During the processing, the equipment can achieve good consistency and high processing accuracy due to the precise and stable clamping and positioning of the thin-walled parts. The vibration and deformation of the parts are controllable, avoiding rework or scrap due to quality problems. It solves the deformation problem in the processing of thin-walled parts, significantly improving the processing capabilities and economic benefits in high-end manufacturing fields such as aerospace and energy. It is especially suitable for high-precision, multi-variety, and small-batch production scenarios.
[0043] See Figure 7 The present invention also provides a method for processing thin-walled parts using the above-described device for reducing deformation interference of thin-walled parts, comprising: S1: The large end process rectangular block of the part to be positioned 4 is aligned with the first positioning block 2, and the large end process rectangular block of the part to be positioned 4 is pressed and positioned in conjunction with the first clamping block 3. S2: Place the small end process square block of the blade of the part to be positioned 4 on the second arc segment 52 of the second positioning block 5, so that the first arc segment 51 and the second arc segment 52 are both tangent to one side of the small end process square block of the blade of the part to be positioned 4, and cooperate with the second pressing block 6 to press and position the small end process square block of the blade of the part to be positioned 4, thus completing the positioning of the part to be positioned 4. S3: Machining of the positioned parts 4 until all parts are machined, thus completing the machining of the thin-walled part.
[0044] This method uses multi-region collaborative positioning and clamping technology to accurately position the geometric features of thin-walled parts, improving the clamping and positioning accuracy of thin-walled parts. It can effectively avoid the problem of relative angular deviation between the reference planes of the process bosses at both ends of the blade tenon and blade tip caused by the torsional deformation of the parts after the release of internal stress, thereby ensuring the consistency of part processing. The method is simple, with a high part processing qualification rate and high processing efficiency.
[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the technical solution of the present invention in any way. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solution can be modified and replaced in several simple ways, and these modifications and replacements are all within the scope of protection covered by the claims.
Claims
1. A device for reducing deformation interference of thin-walled parts, characterized in that, The system includes a base plate. One end of the base plate has a first positioning block with a first clamping block. The first positioning block and the first clamping block cooperate to clamp the large-end rectangular process block of the part to be positioned, and both the first positioning block and the first clamping block are in contact with the surface of the large-end rectangular process block of the part to be positioned. The other end of the base plate has a second positioning block with a second clamping block and a third clamping block. The second positioning block and the second clamping block cooperate to clamp the small-end rectangular process block of the blade of the part to be positioned. The second positioning block includes a first arc segment and a second arc segment connected to each other. Both the first arc segment and the second arc segment are tangent to one face of the small-end rectangular process block of the blade of the part to be positioned. R > L / 2, where R is the radius of the first arc segment or the second arc segment; L is the side length of the small-end rectangular process block of the blade of the part to be positioned. The third clamping block is connected to the second positioning block and is used to clamp the remaining surface of the small end process square block of the blade of the part to be positioned after the second positioning block and the second clamping block cooperate to clamp it.
2. The device for reducing deformation interference of thin-walled parts according to claim 1, characterized in that, 2L>R>L.
3. The device for reducing deformation interference of thin-walled parts according to claim 1, characterized in that, A third arc segment is provided between the first arc segment and the second arc segment.
4. The device for reducing deformation interference of thin-walled parts according to claim 3, characterized in that, The third arc segment bends in the opposite direction to the first and second arc segments.
5. The device for reducing deformation interference of thin-walled parts according to claim 1, characterized in that, The first clamping block is hinged to the first positioning block.
6. The device for reducing deformation interference of thin-walled parts according to claim 5, characterized in that, The free end of the first clamping block is connected to the first positioning block by screws.
7. The device for reducing deformation interference of thin-walled parts according to claim 1, characterized in that, Both the second and third positioning blocks are connected to the second positioning block by screws.
8. A thin-walled parts processing equipment, characterized in that, Includes the device for reducing deformation interference of thin-walled parts as described in any one of claims 1-7.
9. A method for machining thin-walled parts using the device for reducing deformation interference of thin-walled parts according to any one of claims 1-7, characterized in that, include: The large end of the process rectangular block of the part to be positioned is aligned with the first positioning block, and the large end of the process rectangular block of the part to be positioned is pressed and positioned by the first clamping block. Place the small end process square block of the blade of the part to be positioned on the second arc segment of the second positioning block, so that the first arc segment and the second arc segment are both tangent to one face of the small end process square block of the blade of the part to be positioned. With the cooperation of the second clamping block and the third clamping block, the small end process square block of the blade of the part to be positioned is clamped and positioned to complete the positioning of the part to be positioned. The machined parts of the positioned part are machined until all parts are machined, thus completing the machining of the thin-walled part.