High-pressure turbine multi-cascade blade body trailing edge gauge

Abstract

The utility model relates to mechanical manufacturing detection technical field especially relates to the detection tool of the rear edge of the blade body of aeroengine high pressure turbine multi-leaf blade, including lower mould and upper mould, the upper mould is installed on the lower mould, install positioning component on the lower mould, positioning component first positioning module, screw rod, positioning plate, second positioning module, quick pressure clamp, zero module, the lower mould is opened with the chute, first positioning module fixed connection in the chute, positioning plate sliding connection in the chute, the utility model discloses through first positioning module, screw rod, quick pressure clamp will be accurately positioned between three positioning modules to the blade, this kind of positioning mode has discarded the positioning process of complicated and tedious traditional three -coordinate measuring machine, not only simple and quick operation, but also can adapt to the blade detection demand of different specifications, has improved the detection efficiency, has reduced the equipment cost and the requirement to the professional skill of operating personnel simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing testing technology, and in particular to the inspection tool for the trailing edge of the multi-stage blade of a high-pressure turbine in aero-engines. Background Technology

[0002] Multi-stage blades are an important component of key equipment such as aero-engines, and their manufacturing precision requirements are extremely high. The trailing edge dimension of the blade is an important dimension of this type of part, and its dimensional accuracy has a direct impact on the airflow. Currently, the measurement of the trailing edge dimension of such complex parts is usually carried out using a coordinate measuring machine.

[0003] The existing three-coordinate measuring machine used for the trailing edge inspection of multi-stage blades of high-pressure turbines for aero-engines is cumbersome and time-consuming, which cannot meet the needs of full inspection or large-scale rapid inspection of parts on the production site, becoming a bottleneck in the production process. At the same time, the three-coordinate measuring machine is expensive and requires high professional skills from the operators, which increases production costs. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology. The existing high-pressure turbine multi-stage blade trailing edge inspection tool uses coordinate measuring machine, which is cumbersome and time-consuming, and cannot meet the needs of full inspection or large-scale rapid inspection of parts on the production site, becoming a bottleneck in the production process. At the same time, the coordinate measuring machine is expensive and requires high professional skills from the operators, which increases the production cost. Therefore, the proposed high-pressure turbine multi-stage blade trailing edge inspection tool is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A blade trailing edge inspection tool for multi-stage high-pressure turbine blades of aero-engines includes a lower mold and an upper mold, wherein the upper mold is mounted on the lower mold; The lower mold is equipped with positioning components, which include a first positioning module, a screw, a positioning plate, a second positioning module, a quick clamp, and a zero-point module. The lower mold has a sliding groove, the first positioning module is fixedly connected in the sliding groove, the positioning plate is slidably connected in the sliding groove, the screw is threadedly connected to the first positioning module, the second positioning module is fixedly connected to the lower mold, and multiple positioning bosses are fixedly connected to the second positioning module. The quick clamp is installed on the second positioning module, a third positioning module is fixedly connected to the lower mold, and the zero-point module is fixedly connected to the lower mold.

[0006] Preferably, a reference boss is fixedly connected to the third positioning module, and a zeroing hole is opened on the zeroing module, with a measuring instrument slidably connected in the zeroing hole.

[0007] Preferably, a handle is fixedly connected to the upper mold, and two rotating modules are fixedly connected to the lower mold, with two rotating shafts rotatably connected to the rotating modules.

[0008] Preferably, the upper mold is fixedly connected to the rotating shaft, and the lower mold has multiple measuring holes.

[0009] Preferably, the upper mold has two support rods fixedly connected to it, and the lower mold has fastening screw holes.

[0010] Preferably, the upper mold is threaded with a fastening bolt, and the fastening bolt is threadedly connected to the fastening bolt hole.

[0011] Preferably, the upper mold has two guide rods fixedly connected to it, and the lower mold has two guide modules fixedly connected to it.

[0012] Preferably, a guide sleeve is installed inside the guide module, and the guide rod is slidably connected inside the guide sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. The blade is precisely positioned between the three positioning modules through the first positioning module, screw, and quick clamp. This positioning method eliminates the cumbersome and complicated positioning process of the traditional coordinate measuring machine. It is not only easy and quick to operate, but also adaptable to the inspection needs of blades of different specifications, which greatly improves the inspection efficiency, while reducing equipment costs and the professional skills required of operators, thus reducing production costs. 2. Through the cooperation of parts such as guide rods, guide sleeves, and guide modules, the upper and lower molds are ensured to maintain precise alignment during the mold closing process, achieving precise connection and stable fit. The connection between the upper and lower molds is further reinforced by fastening bolts to avoid adverse effects on measurement data due to fluctuations in the performance of the inspection fixture itself or changes in the external environment. 3. Through the combined action of components such as the zero-point module, measuring gauge, and measuring hole, the relevant dimensions of the trailing edge of the blade can be accurately measured to obtain accurate quantitative data. The entire inspection process is efficient and precise, effectively solving the problems of cumbersome and time-consuming inspection processes in existing technologies, which cannot meet the needs of full inspection or large-scale rapid inspection on the production site. At the same time, it can quickly determine whether the parts are qualified based on the readings. For unqualified parts, they can be reshaped and then the inspection tool can be used again to check the reshaped results until the dimensions are qualified. Attached Figure Description

[0014] Figure 1 This is a front structural schematic diagram of the aero-engine high-pressure turbine multi-stage blade trailing edge inspection tool proposed in this utility model; Figure 2 This is a schematic diagram of the upper mold structure of the aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture proposed in this utility model; Figure 3 This is a schematic diagram of the lower mold structure of the aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture proposed in this utility model; Figure 4 This is a schematic diagram of the second positioning module of the aero-engine high-pressure turbine multi-stage blade trailing edge inspection tool proposed in this utility model; Figure 5 This is a schematic diagram of the first positioning module of the aero-engine high-pressure turbine multi-stage blade trailing edge inspection tool proposed in this utility model.

[0015] In the diagram: 1 Lower mold, 2 Upper mold, 3 First positioning module, 4 Screw, 5 Positioning plate, 6 Second positioning module, 7 Positioning boss, 8 Quick clamp, 9 Third positioning module, 10 Reference boss, 11 Zero point module, 12 Zeroing hole, 13 Rotation module, 14 Rotating shaft, 15 Measuring hole, 16 Guide rod, 17 Guide module, 18 Guide sleeve, 19 Support rod, 20 Fastening bolt, 21 Handle, 22 Measuring gauge. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" 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 utility model product is in use, they are only for the convenience of describing this utility model 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, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Reference Figure 1The aero-engine high-pressure turbine multi-stage blade trailing edge inspection tool includes a lower mold 1 and an upper mold 2. The upper mold 2 is installed on the lower mold 1. Two support rods 19 are fixedly connected to the upper mold 2. The front end of the support rods 19 is provided with a soft pad. The support rods 19 can prevent the upper mold 2 from contacting the ground when it is opened, thus preventing the accuracy of the upper mold 2 from being affected.

[0020] Reference Figure 3-5 The lower mold 1 is equipped with positioning components, including a first positioning module 3, a screw 4, a positioning plate 5, a second positioning module 6, a quick clamp 8, and a zero-point module 11. A sliding groove is formed on the lower mold 1. The first positioning module 3 is fixedly connected to the sliding groove, and the second positioning module 6 is fixedly connected to the lower mold 1. A third positioning module 9 is fixedly connected to the lower mold 1. The zero-point module 11 is fixedly connected to the lower mold 1, and a reference boss 10 is fixedly connected to the third positioning module 9. A zeroing hole 12 is formed on the zeroing hole 12, and a measuring gauge 22 is slidably connected within the zeroing hole 12. The measuring gauge 22, as a widely used device in existing technology, is commonly used in various engineering and scientific research fields to obtain accurate quantitative data. The blade is installed between the three positioning modules, such as... Figure 4 As shown, multiple positioning bosses 7 are fixedly connected to the second positioning module 6. The positioning bosses 7 and the reference bosses 10 can completely fit with the reference holes of the blade. The quick clamp 8 is installed on the second positioning module 6. The quick clamp 8 belongs to the existing technology solution that is mature and widely adopted in the field of clamping technology. Its design structure and working principle have been clearly specified and described in detail in relevant industry standards and technical documents. This technology, with its efficient and stable clamping performance, convenient operation and reliable safety guarantee mechanism, has been widely verified and used in actual production and assembly processes, fully demonstrating its practicality and advancement at the current stage of technological development. Figure 5 As shown, the positioning plate 5 is slidably connected in the groove, and the screw 4 is threadedly connected to the first positioning module 3. Rotating the screw 4 can push the positioning plate 5 to slide in the groove, thereby locking one end of the blade between the second positioning modules 6. This allows the positioning component to adapt to blades of different specifications. After the blade is initially positioned, the quick clamp 8 of the second positioning module 6 is pulled to fix the other end of the blade, thus fixing the blade between the three positioning modules. The positioning and fixing steps can be completed simply and quickly without the need for a coordinate measuring machine.

[0021] Reference Figure 3 Two rotating modules 13 are fixedly connected to the lower mold 1. Fastening screw holes are provided on the lower mold 1. Two guide modules 17 are fixedly connected to the lower mold 1. Guide sleeves 18 are installed inside the guide modules 17. The guide sleeves 18 are made of rubber material.

[0022] Reference Figure 2The upper mold 2 is threaded with a fastening bolt 20, which is threaded into a fastening screw hole. When the upper mold 2 and the lower mold are precisely aligned, the fastening bolt 20 is rotated. During the rotation, the fastening bolt 20 is gradually screwed into the pre-made fastening screw hole, ensuring a tight thread fit between the bolt and the screw hole, ultimately achieving a firm connection. Two rotating shafts 14 are rotatably connected to the rotating module 13. The upper mold 2 is fixedly connected to the rotating shaft 14. The lower mold 1 has multiple measuring holes 15. Two guide rods 16 are fixedly connected to the upper mold 2. The guide rods 16 are slidably connected in the guide sleeve 18. The guide rods 16 have precisely machined dimensions and surface finish, and can be inserted into the guide sleeve 18 without deviation, thereby ensuring that the upper mold 2 and the lower mold 1 always maintain precise alignment during the mold closing process, achieving a precise connection and stable fit. A handle 21 is fixedly connected to the upper mold 2, which facilitates pulling the upper mold 2.

[0023] First, rotate the fastening bolt 20 to separate the upper mold 2 from the lower mold 1. Then, rotate the upper mold 2 using the handle 21 to expose the positioning space on the lower mold 1. Place the measuring instrument 22 into the zeroing hole 12 on the zero point module 11 to calibrate and zero the measuring instrument 22. Place the blade on the lower mold 1 and rotate the screw 4 to move the positioning plate 5 until the reference hole on the blade is completely aligned with the positioning boss 7 and the reference boss 10. At this point, the blade is initially positioned. Then, pull the quick clamp 8 to secure the other end of the blade with its stable and efficient clamping performance, so that the blade is accurately positioned between the three positioning modules. This positioning method eliminates the cumbersome and complicated positioning process of traditional coordinate measuring machines. It is not only simple and quick to operate, but also adaptable to the inspection needs of blades of different specifications, greatly improving the inspection efficiency.

[0024] After the blade positioning is completed, the upper mold 2 is smoothly and accurately closed onto the lower mold 1 through the precise cooperation of the guide rod 16 and the guide sleeve 18. This ensures that the upper mold 2 and the lower mold 1 maintain precise alignment throughout the mold closing process, achieving a precise connection and stable fit. Then, the fastening bolt 20 is rotated to ensure a tight threaded connection with the fastening screw hole on the lower mold 1, further reinforcing the connection between the upper mold 2 and the lower mold 1. To ensure the accuracy and consistency of the measurement results, it is essential to strictly guarantee the good stability and reliability of the inspection fixture during the testing process, avoiding adverse effects on the measurement data due to fluctuations in the fixture's own performance or changes in the external environment. After the sound, the measuring gauge 22 can slide within multiple measuring holes 15 to accurately measure the relevant dimensions of the trailing edge of the blade, obtaining accurate quantitative data. The entire inspection process is efficient and precise, effectively solving the problems of cumbersome and time-consuming inspection processes in existing technologies, which cannot meet the needs of full inspection or large-scale rapid inspection on the production site. At the same time, it reduces equipment costs and the professional skills required of operators, thereby reducing production costs. It can also quickly determine whether a part is qualified based on the reading. For unqualified parts, they can be reshaped, and then the inspection tool can be used again to check the reshaped results until the dimensions are qualified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", "fixing", etc., should be interpreted broadly.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An inspection fixture for the trailing edge of a multi-stage high-pressure turbine blade for aero-engines, characterized in that... It includes a lower mold (1) and an upper mold (2), wherein the upper mold (2) is mounted on the lower mold (1); The lower mold (1) is equipped with positioning components, which include a first positioning module (3), a screw (4), a positioning plate (5), a second positioning module (6), a quick clamp (8), and a zero-point module (11). The lower mold (1) has a sliding groove. The first positioning module (3) is fixedly connected in the sliding groove. The positioning plate (5) is slidably connected in the sliding groove. The screw (4) is threadedly connected to the first positioning module (3). The second positioning module (6) is fixedly connected to the lower mold (1). Multiple positioning bosses (7) are fixedly connected to the second positioning module (6). The quick clamp (8) is installed on the second positioning module (6). A third positioning module (9) is fixedly connected to the lower mold (1). The zero-point module (11) is fixedly connected to the lower mold (1).

2. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 1, characterized in that... The third positioning module (9) is fixedly connected to a reference boss (10), and the zero point module (11) is provided with a zeroing hole (12). A measuring instrument (22) is slidably connected in the zeroing hole (12).

3. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 1, characterized in that, The upper mold (2) is fixedly connected to a handle (21), and the lower mold (1) is fixedly connected to two rotating modules (13), and the rotating modules (13) are rotatably connected to two rotating shafts (14).

4. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 3, characterized in that, The upper mold (2) is fixedly connected to the rotating shaft (14), and the lower mold (1) has multiple measuring holes (15).

5. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 1, characterized in that, The upper mold (2) is fixedly connected to two support rods (19), and the lower mold (1) is provided with fastening screw holes.

6. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 5, characterized in that, The upper mold (2) is threaded with a fastening bolt (20), and the fastening bolt (20) is threadedly connected to the fastening screw hole.

7. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 1, characterized in that, The upper mold (2) is fixedly connected to two guide rods (16), and the lower mold (1) is fixedly connected to two guide modules (17).

8. The aero-engine high-pressure turbine multi-stage blade trailing edge inspection fixture according to claim 7, characterized in that, The guide module (17) is equipped with a guide sleeve (18), and the guide rod (16) is slidably connected inside the guide sleeve (18).

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