A lower hook groove machining tool for an aero-engine sealing groove

Abstract

The utility model relates to an aero -engine sealing groove's lower hook groove processing tool, including the handle and the detachable connection cutter body, one end of cutter body is equipped with cutting edge and forms the cutting groove of 69-72 degrees of opening angle, and the handle corresponding end is equipped with the installation position and the fixed sheet to fix the cutter body, and the cutter body cutting groove is set up opposite the handle. The two sides of cutter body are respectively arranged in first, second mounting surface, and the two mounting surfaces are provided with the V-shaped clamping groove of inclined type, the bottom arc surface radius 2mm, the opening width 9.6mm. The first, second datum plane are equipped with the both ends of cutter body, and the first datum plane is clamped to the angle 116-117 of cutting edge outside surface, and the cutter body is inclined to install and the second datum plane is clamped to the angle 3 of handle bottom surface, and the cutter body is fixed in the installation position of handle mounting portion through bolt and fixed sheet, and the installation position is equipped with fastening hole, and the both ends of cutter body are equipped with cutting edge, and the both sides edge of cutting edge is clamped to the angle 5-6. The tool can improve the installation stability, the processing adaptability and the cutting precision.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine component processing technology, and in particular to a tool for machining the lower hook groove of an aero-engine sealing groove. Background Technology

[0002] In the field of aero-engine manufacturing, the sealing groove is a key structure that ensures the airtightness and operational stability of the engine, and the machining accuracy of its lower groove directly affects the overall performance of the engine. As the requirements for sealing performance and reliability of aero-engines continue to increase, more stringent standards have been set for the machining quality of the lower groove of the sealing groove. As the core machining tool, the performance adaptability, installation stability and cutting accuracy of the machining tool have become key factors determining the machining effect.

[0003] Existing cutting tools used for machining the lower hook groove of sealing slots in aero-engines have significant shortcomings. On the one hand, some tools adopt an integrated design of the tool holder and tool body. When the tool body is partially worn or damaged, the entire tool needs to be replaced, which not only increases the cost of use but also affects machining efficiency due to the cumbersome replacement process. Furthermore, the integrated structure makes it difficult to flexibly adjust to the specific dimensions of the lower hook groove, resulting in poor machining adaptability. On the other hand, although some tools adopt a split design, the connection structure between the tool body and the tool holder lacks a stable fixing mechanism. During high-speed cutting, the tool body is prone to displacement, leading to insufficient installation stability and consequently causing machining errors.

[0004] Meanwhile, the cutting structure design of existing cutting tools fails to adequately adapt to the machining requirements of the lower hook groove. For example, key parameters such as the cutting groove opening angle and cutting edge angle are not optimized for the forming characteristics of the lower hook groove. This easily leads to problems such as excessive cutting resistance and poor chip removal during the cutting process, which not only reduces cutting efficiency but also easily causes the lower hook groove to have excessive surface roughness and fail to meet dimensional accuracy standards, making it difficult to meet the high-precision machining requirements of the lower hook groove of the sealing groove in aero-engines. In addition, the clamping structure design of some cutting tools is unreasonable and cannot provide stable clamping force for the tool body, further aggravating vibration during the machining process, affecting cutting accuracy, and causing the machined lower hook groove to fail to meet the stringent standards of engine assembly, posing a potential hazard to the safe operation of aero-engines.

[0005] Therefore, there is an urgent need for a machining tool for the lower groove of the sealing groove in aero-engines that can solve the problems of poor machining adaptability, insufficient installation stability and low cutting accuracy of existing cutting tools, so as to meet the high-precision machining needs of the sealing groove in the aero-engine manufacturing field. Utility Model Content

[0006] In view of this, the present invention provides a tool for machining the lower hook groove of an aero-engine sealing groove, in order to solve the technical problem that the existing tools for machining the lower hook groove of an aero-engine sealing groove are insufficient in terms of machining adaptability, installation stability and cutting accuracy, and cannot meet the specific machining requirements of the lower hook groove of the sealing groove.

[0007] This utility model embodiment provides a tool for machining the lower groove of an aero-engine sealing groove, including: a tool holder, and a tool body detachably connected to one end of the tool holder;

[0008] One end of the blade is provided with a cutting edge, and a cutting groove is formed between the cutting edge and the blade body, and the opening angle of the cutting groove is set to 69-72°; the handle is provided with a mounting position at the end where the blade body is located, and a fixing piece for fixing the blade body to the mounting position, and the cutting groove of the blade body is arranged opposite to the handle.

[0009] Preferably, the two sides of the blade body are respectively disposed on the first mounting surface and the second mounting surface;

[0010] The first mounting surface and the second mounting surface are respectively provided with a first clamping groove and a second clamping groove; the first clamping groove and the second clamping groove are respectively inclined to the first mounting surface and the second mounting surface.

[0011] Both the first clamping groove and the second clamping groove are configured as V-shaped grooves.

[0012] Preferably, the opening of the V-groove is set at a 120° angle, and the bottom of the V-groove is set as an arc surface with a radius of 2mm.

[0013] Preferably, the two ends of the blade body are respectively set as a first reference surface and a second reference surface;

[0014] The outer surface of the cutting edge is set at an angle of 116-117° with the first reference plane.

[0015] Preferably, the blade body is installed at an angle to the mounting position, and the second reference plane has an angle of 3° with the ground of the blade handle.

[0016] Preferably, the blade body is mounted at the installation position by a fixing plate, and the fixing plate and the blade body are fixed by bolts.

[0017] Preferably, the opening width of the first clamping groove and the second clamping groove is set to 9.6 mm.

[0018] Preferably, each end of the blade body is provided with a cutting edge.

[0019] Preferably, the handle includes a handle and a mounting portion disposed at one end of the handle, the mounting position being disposed on one side of the mounting portion, and the mounting position having a fastening hole for fixing the bolt.

[0020] Preferably, the included angle between the two sides of the cutting edge is set at 5-6°.

[0021] The tool for machining the lower hook groove of the sealing groove of an aero-engine provided by this utility model has the following beneficial effects:

[0022] This cutting tool for machining the lower hook groove of the sealing groove in aero-engines features a detachable connection between the tool holder and the tool body, secured by a fixing plate and bolts, improving installation stability and reducing maintenance costs. Precise parameters such as a cutting groove opening of 69-72° and a cutting edge angle of 5-6°, along with a 3° tool body tilt, are adapted for machining the lower hook groove to improve accuracy. A 120° opening V-shaped clamping groove (2mm bottom arc radius, 9.6mm opening width) enhances clamping stability, and cutting edges at both ends of the tool body extend its service life. This effectively solves the problems of insufficient compatibility, stability, and accuracy of existing cutting tools, enabling specialized machining of the lower hook groove of the sealing groove. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of this utility model.

[0024] Figure 1 This is a schematic diagram of the structure of a tool for machining the lower hook groove of an aero-engine sealing groove;

[0025] Figure 2 This is a schematic diagram of the other side of a tool used for machining the lower hook groove of an aero-engine sealing groove;

[0026] Figure 3 This is a schematic diagram of the mounting structure of a tool for machining the lower hook groove of an aero-engine sealing groove;

[0027] Figure 4 This is a schematic diagram of the mounting structure on the other side of a tool used for machining the lower hook groove of an aero-engine sealing groove.

[0028] Parts and component numbers in the diagram:

[0029] 100-Tool holder, 110-Handle, 120-Mounting part, 121-Fasting hole, 122-Mounting position, 123-Bolt, 124-Fixing plate;

[0030] 200-Tool body, 211-Cutting edge, 212-Cutting groove, 221-First mounting surface, 222-Second mounting surface, 223-First clamping groove, 224-Second clamping groove, 225-First reference surface, 226-Second reference surface. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application 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 this utility model. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Unless otherwise specified, embodiments of the present invention and the various features thereof can be combined with each other, all within the protection scope of the present invention.

[0032] Example 1

[0033] Please see Figure 1This utility model provides a cutting tool for machining the lower hook groove of an aero-engine sealing groove. In the field of aero-engine manufacturing, the machining quality of the lower hook groove of the sealing groove is directly related to the airtightness and operational reliability of the engine, placing extremely high demands on the performance of the machining tool. Existing tools used for machining the lower hook groove of aero-engine sealing grooves generally suffer from poor machining adaptability, insufficient installation stability, and low cutting accuracy: some tools adopt an integrated structure of tool holder 100 and tool body 200, which not only cannot be flexibly adjusted according to the specific dimensions of the lower hook groove, but also requires replacement of the entire tool after partial damage, increasing usage costs and reducing machining efficiency; even with a separate design, the connection and fixing structure between the tool body 200 and tool holder 100 lacks stability, and the tool body 200 is prone to offset during high-speed cutting, leading to increased machining errors.

[0034] Furthermore, the cutting structure parameters of existing cutting tools are not adapted to the machining requirements of the lower hook groove. For example, key parameters such as the opening angle of the cutting groove 212 and the included angle of the cutting edge 211 are poorly designed, which easily generates large cutting resistance during the cutting process, leading to problems such as poor chip removal and excessive surface roughness. This makes it difficult to meet the high-precision machining standards of the lower hook groove for sealing grooves in aero-engines. At the same time, the clamping structure of some cutting tools has not been optimized for stable clamping of the tool body 200, and cannot provide sufficient clamping force. The vibration during machining further aggravates the deviation in cutting accuracy, making it difficult for the machined lower hook groove to meet the engine assembly requirements, thus posing a hidden danger to the safe operation of aero-engines.

[0035] Please see Figure 1 and Figure 3 In this embodiment, a tool for machining the lower groove of an aero-engine sealing groove is provided. The tool includes a tool holder 100 and a tool body 200 detachably connected to one end of the tool holder 100. One end of the tool body 200 is provided with a cutting edge 211, and a cutting groove 212 is formed between the cutting edge 211 and the tool body 200. The opening angle of the cutting groove 212 is set to 69-72°. The tool holder 100 is provided with a mounting position 122 at the end where the tool body 200 is located, and a fixing piece 124 for fixing the tool body 200 to the mounting position 122. The cutting groove 212 of the tool body 200 is arranged opposite to the tool holder 100.

[0036] When machining the lower hook groove of the sealing groove of the aircraft engine, the tool is first clamped on the spindle of the machining equipment by the tool holder 100 to ensure that the tool holder 100 is firmly connected to the equipment. Then, according to the machining position and size requirements of the lower hook groove, the equipment parameters are adjusted so that the tool body 200 faces the area to be machined. Since the cutting groove 212 of the tool body 200 is set opposite to the tool holder 100, the cutting edge 211 can be directly aligned with the machining starting position of the lower hook groove of the sealing groove.

[0037] During the machining process, the equipment drives the tool holder 100 to rotate the tool body 200. The cutting edge 211 at one end of the tool body 200 contacts the workpiece, removing excess material through the cutting action. At the same time, the cutting groove 212 formed between the cutting edge 211 and the tool body 200, with an opening angle of 69-72°, can promptly accommodate and discharge the chips generated during the cutting process, preventing chip accumulation from affecting machining accuracy. If it is necessary to replace the tool body 200 or adjust its position during machining, the fixing piece 124 used to fix the tool body 200 can be loosened, and the tool body 200 can be removed from the mounting position 122 of the tool holder 100. After replacement or adjustment, the tool body 200 can be re-fixed in the mounting position 122 by the fixing piece 124, and machining can continue.

[0038] Specifically, the opening angle of the cutting groove 212 is set to 69-72°, which can meet the chip removal requirements of the lower groove machining, reduce the friction of chips on the cutting edge 211 and the workpiece machining surface, reduce machining errors, and at the same time, the tool holder 100 fixes the tool body 200 in the installation position 122 through the fixing plate 124 to prevent the tool body 200 from shifting during machining, and further ensure the machining accuracy of the lower groove.

[0039] Improve processing flexibility and efficiency: The tool body 200 and the tool holder 100 are detachably connected. When the tool body 200 is worn or damaged, or when it is necessary to replace the tool body 200 with a suitable tool body for different specifications of grooves, there is no need to replace the entire tool. Only the fixing piece 124 needs to be removed to replace the tool body 200, which shortens the tool replacement time, reduces downtime costs, and improves processing efficiency.

[0040] Reduced operating costs: The detachable blade body 200 design makes tool maintenance more convenient. Only the worn blade body 200 needs to be replaced or repaired, without discarding the intact tool holder 100, which greatly reduces the overall use and maintenance costs of the tool. At the same time, the fixing plate 124 firmly fixes the blade body 200, which can also reduce tool wear caused by the loosening of the blade body 200 and extend the tool's service life.

[0041] Please see further. Figure 2 and Figure 4 The blade body 200 is respectively disposed on the first mounting surface 221 and the second mounting surface 222 on both sides;

[0042] The first mounting surface 221 and the second mounting surface 222 are respectively provided with a first clamping groove 223 and a second clamping groove 224; the first clamping groove 223 and the second clamping groove 224 are respectively inclined to the first mounting surface 221 and the second mounting surface 222; the first clamping groove 223 and the second clamping groove 224 are both set as V-shaped grooves.

[0043] Specifically, the tool body 200 is provided on the first mounting surface 221 and the second mounting surface 222 on both sides, forming a two-way support structure, which can prevent the tool body 200 from shifting or shaking due to unilateral force during processing; at the same time, the first clamping groove 223 and the second clamping groove 224 on the first mounting surface 221 and the second mounting surface 222 can further limit the tool body 200. Combined with the structural characteristics of the V-groove (the centering effect of the V-groove on the workpiece), the tool body 200 can be stably clamped in the mounting position 122, reducing the vibration of the tool body 200 during high-speed cutting and ensuring processing accuracy.

[0044] When the first clamping groove 223 and the second clamping groove 224 are inclined to the first mounting surface 221 and the second mounting surface 222, they can match the inclined mounting structure of the tool body 200, ensuring that the tool body 200 is precisely fixed at a preset angle. This allows the cutting edge 211 to be accurately aligned with the machining position of the lower hook groove of the aero-engine sealing groove, meeting the machining requirements of the specific angle of the lower hook groove. The V-groove structure design allows the clamping force to be applied more evenly to both sides of the tool body 200, avoiding excessive local force that could cause deformation of the tool body 200. At the same time, the inclined clamping grooves allow the direction of the clamping force to form a reasonable angle with the direction of the force on the tool body 200 during cutting, further enhancing the anti-displacement capability of the tool body 200 during the cutting process, reducing machining errors, and improving the machining quality of the lower hook groove.

[0045] Furthermore, the V-groove opening is set at a 120° angle, and the bottom of the V-groove is set as an arc surface with a radius of 2mm. The 120° angle of the V-groove opening provides ample space for the tool body 200 to fit against both sides, ensuring close contact between the tool body 200 and the inner wall of the clamping groove. It also utilizes the self-centering characteristic of the V-shaped structure to precisely position the tool body 200, preventing lateral displacement due to vibration or force during machining. This ensures the overall installation stability of the tool and meets the stringent requirements for tool positioning accuracy in machining the lower hook groove of the sealing groove in aero-engines.

[0046] The V-groove bottom features a 2mm radius arc design, replacing the traditional sharp groove bottom structure. This effectively disperses the concentrated clamping force on the groove bottom during tool body 200 installation and cutting, preventing cracks or deformation due to excessive stress. It also reduces wear on the contact area between the tool body 200 and the clamping groove, extending the service life of both the V-groove and the tool body 200, and lowering tool maintenance costs. Furthermore, the 120° opening angle provides ample operating space for tool body 200 installation and removal. Combined with the 2mm arc radius for smooth corners, it prevents the tool body 200 from colliding with the groove bottom during installation, allowing operators to quickly align the tool body 200 with the clamping groove, shortening tool change and adjustment time, and ensuring the continuity of the machining process.

[0047] Furthermore, the two ends of the blade body 200 are respectively set as a first reference surface 225 and a second reference surface 226; the outer side of the cutting edge 211 is set at an angle of 116-117° with the first reference surface 225.

[0048] Furthermore, the tool body 200 is installed at an angle to the mounting position 122, and the angle between the second reference surface 226 and the ground of the tool holder 100 is 3°. The tool body 200 has a first reference surface 225 and a second reference surface 226 at both ends, providing a clear reference for the angular positioning of the cutting edge 211. Setting the angle between the outer surface of the cutting edge 211 and the first reference surface 225 to 116-117° allows the cutting edge 211 to contact the workpiece at a preset angle, precisely matching the specific inclined surface machining requirements of the sealing groove in an aero-engine, and avoiding insufficient machining surface accuracy due to cutting angle deviation.

[0049] Furthermore, the tool body 200 is installed at an angle to the mounting position 122, and the angle between the second reference plane 226 and the ground of the tool holder 100 is set to 3°. This, combined with the spatial structure characteristics of the lower groove, allows the tool body 200 to be in the optimal machining posture, ensuring that the cutting edge 211 can penetrate deep into the target machining area of ​​the lower groove. At the same time, it avoids interference between the tool body 200 and other parts of the workpiece, improving the smoothness and safety of the machining operation.

[0050] The setting of the first reference surface 225 and the second reference surface 226 provides a unified precision reference for tool manufacturing and installation. The fixed angle parameters of 116-117° and 3° can ensure that the cutting posture and processing effect of each tool are consistent, reducing the processing error caused by individual tool differences. At the same time, the stable angle design can also reduce the impact of vibration on accuracy during cutting, and ensure the stability of the groove size and surface quality during batch processing.

[0051] Furthermore, the blade body 200 is positioned at the mounting position 122 by a fixing plate 124, and the fixing plate 124 and the blade body 200 are fixed by bolts 123.

[0052] Furthermore, the handle 100 includes a handle 110 and a mounting portion 120 disposed at one end of the handle 110. The mounting position 122 is disposed on one side of the mounting portion 120, and the mounting position 122 is provided with a fastening hole 121 for fixing the bolt 123.

[0053] The tool body 200 is fixed to the mounting position 122 by the cooperation of the fixing plate 124 and the bolt 123. The bolt 123 can be inserted into the fastening hole 121 of the mounting position 122 to form a rigid connection, which prevents the tool body 200 from loosening or shifting during high-speed cutting. At the same time, the mounting part 120 of the tool holder 100 provides a stable structural support for the mounting position 122, so that the fixing force of the fixing plate 124 and the bolt 123 can be evenly transmitted to the tool body 200, reducing the impact of machining vibration on the attitude of the tool body 200, thereby ensuring the machining accuracy of the lower hook groove of the sealing groove of the aero-engine.

[0054] In this embodiment, a detachable fixing structure of fixing plate 124 and bolt 123 is adopted. When the tool body 200 is worn or needs to be replaced, only the bolt 123 needs to be removed and the fixing plate 124 needs to be removed to replace the tool body 200, without the need to replace the entire tool holder 100. Moreover, the installation position 122 is set on one side of the installation part 120, which provides sufficient operating space for the installation and removal of bolt 123, shortens the tool maintenance and replacement time, and reduces the tool usage cost.

[0055] Optimizing the stress on the tool structure and extending its service life: The structural design of the mounting part 120 makes the mounting position 122 and the handle 110 of the tool holder 100 form a reasonable force transmission path. When the bolt 123 is fixed through the fastening hole 121, the clamping force of the fixing plate 124 can be distributed to the mounting part 120, avoiding excessive local stress on the tool holder 100 and deformation. At the same time, the precise fit between the bolt 123 and the fastening hole 121 can reduce the wear of the fixing part and extend the service life of the tool holder 100 and the fixing part.

[0056] Furthermore, the opening width of the first clamping groove 223 and the second clamping groove 224 is set to 9.6 mm. Furthermore, the included angle between the two sides of the cutting edge 211 is set to 5-6°.

[0057] The opening width of the first clamping groove 223 and the second clamping groove 224 is set at 9.6mm to precisely match the thickness of both sides of the tool body 200, ensuring that the tool body 200 can be tightly embedded in the clamping groove. This avoids the problem of the tool body 200 shaking due to excessive groove width or the inability to install smoothly due to insufficient groove width. At the same time, in conjunction with the V-groove structure, it can further enhance the clamping force on the tool body 200 and reduce the displacement of the tool body 200 during the machining process, providing a stable foundation for the precise machining of the hook groove of the sealing groove of the aero-engine.

[0058] The included angle between the two sides of the cutting edge 211 is set to 5-6°. This angle design can reduce the contact area between the cutting edge 211 and the workpiece, reduce cutting resistance, make the cutting process smoother, and reduce the extrusion deformation of the workpiece material. At the same time, a reasonable included angle can keep the cutting edge 211 sharp and strong, extend the service life of the cutting edge 211, and avoid the problem that the cutting edge 211 is easy to break due to the angle being too large, or the cutting efficiency is low due to the angle being too small. This ensures that the surface roughness and dimensional accuracy of the grooved surface meet the requirements.

[0059] Furthermore, each end of the blade body 200 is provided with a cutting edge 211.

[0060] Specifically, the tool body 200 is equipped with cutting edges 211 at both ends. When one cutting edge 211 becomes unusable due to wear or breakage, there is no need to replace the entire tool body 200. Instead, the tool body 200 can be disassembled and flipped over to continue machining using the other intact cutting edge 211. This significantly extends the actual service life of the tool body 200, reduces the frequency of tool body 200 replacement, and lowers the overall procurement and maintenance costs of the tool.

[0061] The design of the double cutting edge 211 also avoids the interruption of processing due to the damage of a single cutting edge 211. There is no need to wait for a new tool body 200 to be replaced. Processing can be quickly resumed simply by flipping the tool body 200, which shortens the equipment downtime for adjustment. Especially in the batch processing scenario of grooving the sealing groove of aero-engine, it can effectively ensure the continuity of the processing flow and improve the overall production efficiency.

[0062] During manufacturing, the cutting edges 211 at both ends of the same tool body 200 can maintain the same angle, size and other parameters (such as the included angle between the two sides of the cutting edge 211 is 5-6°, and the included angle between the outer side of the cutting edge 211 and the first reference surface 225 is 116-117°). After being flipped and used, it can still ensure that the cutting posture and machining accuracy meet the requirements, avoid individual differences that may occur due to the replacement of different tool bodies 200, and ensure the consistency of the size and surface quality of the hook groove during batch processing.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tool for machining the lower groove of an aero-engine sealing groove, characterized in that, include: Handle And a blade body that is detachably connected to one end of the handle; One end of the blade is provided with a cutting edge, and a cutting groove is formed between the cutting edge and the blade body, and the opening angle of the cutting groove is set to 69-72°. The handle has an installation position at one end where the blade body is located, and a fixing piece for fixing the blade body to the installation position. The cutting groove of the blade body is arranged opposite to the handle.

2. The tool for machining the lower groove of an aero-engine sealing groove according to claim 1, characterized in that, The two sides of the blade body are respectively disposed on the first mounting surface and the second mounting surface; The first mounting surface and the second mounting surface are respectively provided with a first clamping groove and a second clamping groove; the first clamping groove and the second clamping groove are respectively inclined to the first mounting surface and the second mounting surface. Both the first clamping groove and the second clamping groove are configured as V-shaped grooves.

3. The tool for machining the lower groove of an aero-engine sealing groove according to claim 2, characterized in that, The opening of the V-groove is set at a 120° angle, and the bottom of the V-groove is set as an arc surface with a radius of 2mm.

4. The tool for machining the lower groove of an aero-engine sealing groove according to claim 1, characterized in that, The two ends of the blade body are respectively set as the first reference surface and the second reference surface; The outer surface of the cutting edge is set at an angle of 116-117° with the first reference plane.

5. The tool for machining the lower groove of an aero-engine sealing groove according to claim 4, characterized in that, The blade body is installed at an angle to the mounting position, and the second reference plane has an angle of 3° with the ground of the blade handle.

6. The tool for machining the lower groove of an aero-engine sealing groove according to claim 1, characterized in that, The blade body is mounted at the installation position via a fixing plate, and the fixing plate and the blade body are fixed together by bolts.

7. The tool for machining the lower groove of an aero-engine sealing groove according to claim 2, characterized in that, The opening width of the first clamping groove and the second clamping groove is set to 9.6 mm.

8. The tool for machining the lower groove of an aero-engine sealing groove according to claim 1, characterized in that, Each of the two ends of the blade body is provided with a cutting edge.

9. A tool for machining the lower groove of an aero-engine sealing groove according to claim 6, characterized in that, The handle includes a handle and a mounting portion disposed at one end of the handle. The mounting position is disposed on one side of the mounting portion, and the mounting position is provided with a fastening hole for fixing the bolt.

10. The tool for machining the lower groove of an aero-engine sealing groove according to claim 1, characterized in that, The included angle between the two sides of the cutting edge is set at 5-6°.

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