Clamping and positioning device for blade surface quality measurement

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By designing a clamping positioning device for measuring the surface quality of the aircraft engine, the problem of difficulty in positioning the designated position of the blade surface in the prior art is solved, and the accurate positioning of the blade and the reduction of measurement errors are achieved.

CN222521064UActive Publication Date: 2025-02-25AECC COMML AIRCRAFT ENGINE CO LTD

View PDF 0 Cites 0 Cited by

Patent Information

Application Number: CN202421133884.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-22
Publication Date: 2025-02-25
Estimated Expiration: 2034-05-22

AI Technical Summary

Technical Problem

The prior art is difficult to accurately locate the designated position of the surface of the aircraft engine blade, resulting in the occurrence of measurement position deviation and measurement error.

Method used

Design a clamping positioning device, including a base plate, a side plate, a screw, a moving assembly and a rotating component, through the relative movement of the screw and a moving assembly, the blades are clamped between the moving assembly, and the measurement device is established between the blades. Coordinate system mapping relationship.

Benefits of technology

The clamping and fixing of the blades and accurate positioning of the specified surface positions are achieved, which avoids the measurement error introduced by the measurement position deviation and improves the measurement accuracy.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN222521064U_ABST

Patent Text Reader

Abstract

The utility model provides a clamping and positioning device for measuring the surface quality of a blade. The clamping and positioning device comprises a bottom plate; the left side plate and the right side plate are installed on the bottom plate and located on the left side and the right side of the bottom plate respectively. The front cover plate and the rear cover plate are connected between the left side plate and the right side plate respectively and located on the front side and the rear side of the bottom plate. One end part of the screw rod is connected with the left side plate, and the other end part of the screw rod is connected with the right side plate; the at least two moving assemblies are in threaded connection with the screw rod; the rotating part is arranged on the left side plate or the right side plate and is connected with the screw rod; the rotating component is screwed to drive the screw rod to rotate, so that the moving assemblies move oppositely, and the blade is clamped and positioned between the moving assemblies. According to the utility model, the blade is fixed based on the shape design of the blade, and the coordinate system mapping relation between the measuring equipment and the blade is established, so that the specified position of the blade is positioned by the measuring equipment.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of surface quality measurement of aero-engine blades, in particular to a clamping and positioning device for measuring the surface quality of blades. Background Art

[0002] In the field of aero-engines, aero-engine blades, as the most important core components of the engine, have complex shapes, large bending and torsion, and complex processing techniques. The quality of their surface processing directly affects the operating safety and efficiency of the engine, and to a large extent determines the performance of the engine.

[0003] Good blade surface quality can make the stress distribution on the blade surface more uniform, reduce stress concentration and the occurrence of microcracks, thereby effectively improving the fatigue life of the blade. It can also make the blade surface smoother, which is beneficial to reducing the wind resistance on the blade surface and greatly beneficial to improving the aerodynamic performance and work efficiency of the blade. Therefore, it is necessary to detect and control the surface quality of aircraft engine blades.

[0004] With the advancement of technology, optical three-dimensional measurement technology has gradually been applied to the field of surface micro-morphology measurement, expanding the measurement of surface micro-morphology from two-dimensional line measurement to three-dimensional surface measurement.

[0005] However, conventional optical 3D measuring equipment is mainly used to measure simple regular parts such as planes and spheres, and can only be roughly positioned manually or electrically. However, for irregular and complex surfaces such as blades, the roughness at different positions will be different, and the requirements for the measurement position are higher. Conventional measuring equipment is difficult to accurately locate the specified position on the blade surface.

[0006] In view of this, the inventor of the present application has designed a clamping and positioning device for blade surface quality measurement in order to overcome the above technical problems. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the defect that conventional measuring equipment in the prior art is difficult to accurately locate the designated position on the blade surface, and to provide a clamping and positioning device for measuring the surface quality of the blade.

[0008] The utility model solves the above technical problems through the following technical solutions:

[0009] A clamping and positioning device for measuring blade surface quality, characterized in that the clamping and positioning device comprises:

[0010] Base plate;

[0011] A left side plate and a right side plate are mounted on the bottom plate, and are located on the left and right sides of the bottom plate respectively;

[0012] A front cover plate and a rear cover plate, respectively connected between the left side plate and the right side plate, and located at the front and rear sides of the bottom plate;

[0013] A screw rod, one end of which is connected to the left side plate, and the other end of which is connected to the right side plate;

[0014] at least two moving components, wherein the moving components are threadedly connected to the screw;

[0015] A rotating component, the rotating component is mounted on the left plate or the right plate and connected to the screw rod;

[0016] The rotating component is screwed to drive the screw rod to rotate, so that the moving components move toward each other, and the blades are clamped and positioned between the moving components.

[0017] According to an embodiment of the utility model, threads are arranged at both ends of the screw rod.

[0018] According to an embodiment of the utility model, the rotating component is a hand wheel.

[0019] According to an embodiment of the utility model, each of the moving components includes a rotating nut and a moving block, the rotating nut is passed through the screw rod and cooperates with the thread of the screw rod;

[0020] The moving block is connected to the rotating nut so that the moving block moves together with the rotating nut.

[0021] According to an embodiment of the utility model, a groove is provided on the outer side surface of the moving block, and the rotating nut is installed in the groove.

[0022] According to an embodiment of the utility model, each of the moving components further includes a guide, which is connected to the lower end of the moving block and is used to control the moving direction of the moving block.

[0023] According to an embodiment of the utility model, each of the moving components further includes a clamping block, which is connected to the upper end of the moving block so that the clamping block moves together with the moving block to fix the left and right positions of the blades.

[0024] According to an embodiment of the utility model, each of the moving components further includes a blocking block, which is connected to the clamping block and is used to fix the forward and backward positions of the blades.

[0025] According to an embodiment of the utility model, the inner surface of the clamping block is completely fitted with the tenon surface of the tenon of the blade.

[0026] According to an embodiment of the utility model, the inner surface of the blocking block is completely in contact with the front working surface of the tenon of the blade.

[0027] The positive and progressive effects of the utility model are:

[0028] The utility model discloses a clamping and positioning device for measuring the surface quality of a blade. The blade is fixed based on the blade shape design, and a coordinate system mapping relationship between the measuring device and the blade is established to realize the positioning of the measuring device on the specified position of the blade.

[0029] The clamping and positioning device realizes the clamping and fixing of the blade and the positioning of the designated position on the blade surface, thereby avoiding the measurement error introduced by the deviation of the measurement position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals always represent the same features, wherein:

[0031] Figure 1 It is a stereoscopic diagram of the clamping and positioning device for blade surface quality measurement according to the utility model.

[0032] Figure 2 It is a front view of the clamping and positioning device for blade surface quality measurement of the utility model.

[0033] Figure 3 It is a rear view of the clamping and positioning device for blade surface quality measurement of the utility model.

[0034] Figure 4 It is a bottom view of the clamping and positioning device for blade surface quality measurement of the utility model.

[0035] Figure 5 It is a top view of the clamping and positioning device for blade surface quality measurement of the utility model.

[0036] [Reference Signs]

[0037] Bottom plate 10

[0038] Left side panel 20

[0039] Right side panel 30

[0040] Front cover 40

[0041] Rear cover 50

[0042] Screw 60

[0043] Rotating member 70

[0044] Thread 61

[0045] Move block 80

[0046] Groove 81

[0047] Left-hand rotation nut 82

[0048] Right rotation nut 83

[0049] Guide 84

[0050] Clamp 85

[0051] Blade 100

[0052] Block 86 DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0054] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.Where possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0055] In addition, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the specification of the present invention may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0056] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings contained in each term.

[0057] like Figures 1 to 5 As shown, the utility model discloses a clamping and positioning device for blade surface quality measurement, which includes: a base plate 10, a left side plate 20, a right side plate 30, a front cover plate 40, a rear cover plate 50, a screw 60, at least two moving components and a rotating component 70. The left side plate 20 and the right side plate 30 are mounted on the base plate 10 and are respectively located on the left and right sides of the base plate 10. The front cover plate 40 and the rear cover plate 50 are respectively connected between the left side plate 20 and the right side plate 30, and are located on the front and rear sides of the base plate 10.

[0058] One end of the screw rod 60 is connected to the left side plate 20, and the other end is connected to the right side plate 30. The moving assembly is threadedly connected to the screw rod 60. The rotating component 70 is installed on the left side plate 20 or the right side plate 30 and is connected to the screw rod 60. In this way, by twisting the rotating component 70, the screw rod 60 is driven to rotate (for example, the screw rod 60 is driven to rotate clockwise and counterclockwise), so that the moving assemblies move toward each other, thereby clamping and positioning the blade between the moving assemblies. The rotating component 70 here can preferably be a hand wheel.

[0059] Preferably, threads 61 are provided at both ends of the screw rod 60 .

[0060] Further preferably, each of the moving components includes a rotating nut and a moving block 80, and the rotating nut is passed through the screw rod 60 and matched with the thread 61 of the screw rod 60. The moving block 80 is connected to the rotating nut so that the moving block 80 moves with the rotating nut.

[0061] In particular, the moving block 80 can be arranged in a vertically placed "concave" shape. For example, a groove 81 is provided on the outer side of the moving block 80, and the rotating nut is installed in the groove 81.

[0062] The rotating nut in this embodiment includes a left-rotating nut 82 and a right-rotating nut 83, which are connected to the screw rod 60 and respectively cooperate with the threads 61 at both ends of the screw rod 60. The two moving blocks 80 are respectively connected to the left-rotating nut 82 and the right-rotating nut 83, and can move with the corresponding left-rotating nut 82 and the right-rotating nut 83.

[0063] Preferably, each of the moving components further includes a guide 84 , which is connected to the lower end of the moving block 80 to control the moving direction of the moving block 80 .

[0064] Preferably, each of the moving components further comprises a clamping block 85, which is connected to the upper end of the moving block 80, so that the clamping block 85 moves with the moving block 80, and is used to fix the left-right position of the blade.

[0065] Among them, in this embodiment, the inner surface shape of the clamp block 85 is preferably designed according to the tenon shape of the blade 100, so that after the blade 100 is clamped, the inner surface of the clamp block 85 can completely fit with the tenon tooth surface of the tenon of the blade 100.

[0066] Further preferably, each of the moving components further comprises a blocking block 86, which is connected to the clamping block 85 and is used to fix the forward and backward positions of the blades.

[0067] Among them, in this embodiment, the inner surface shape of the blocking block 86 is preferably designed according to the tenon shape of the blade 100, so that after the blade 100 is clamped, the inner surface of the blocking block 86 can be completely fitted with the front working surface of the tenon of the blade 100.

[0068] According to the above structural description, the clamping and positioning device for blade surface quality measurement of the utility model has the following working principle and use process:

[0069] The hand wheel (i.e., rotating component 70) is turned clockwise to drive the screw rod 60 to rotate, drive the left-rotating nut 82 and the right-rotating nut 83 to rotate, drive the moving blocks 80 to move toward each other at the same time, and then drive the clamping blocks 85 to move toward each other at the same time. The distance between the clamping blocks 85 is shortened, and the tenon part of the blade 100 is placed into the gap between the clamping blocks 85, and the hand wheel (i.e., rotating component 70) is continued to be turned clockwise.

[0070] At the same time, the position of the blade 100 is adjusted so that the front working surface of the tenon fits with the inner surface of the blocking block 86, and the hand wheel (i.e., the rotating component 70) is tightened until the tenon of the blade 100 is clamped. Similarly, by turning the hand wheel (i.e., the rotating component 70) counterclockwise, the clamping block 85 can be loosened and the blade 100 can be taken out.

[0071] The inner surface of the clamping block 85 is completely fitted with the tenon and mortise surface of the blade 100, the inner surface of the blocking block 86 is completely fitted with the tenon front working surface of the blade 100, and the blade coordinate system is consistent with the coordinate system of the clamping and positioning device.

[0072] At the same time, the clamping and positioning device is connected to the measuring device through the base plate 10, and the clamping and positioning device is in the measuring device coordinate system. The blade coordinate system and the measuring device coordinate system establish a mapping relationship through the clamping and positioning device, thereby realizing the positioning of the measuring device on the specified position of the blade surface.

[0073] In summary, the clamping and positioning device for blade surface quality measurement of the utility model fixes the blade based on the blade shape design, and establishes a coordinate system mapping relationship between the measuring device and the blade, so as to realize the positioning of the measuring device on the specified position of the blade.

[0074] The clamping and positioning device realizes the clamping and fixing of the blade and the positioning of the designated position on the blade surface, thereby avoiding the measurement error introduced by the deviation of the measurement position.

[0075] For those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary implementation of the present application.

[0076] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0077] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus facilitate the understanding of one or more embodiments of the invention, in the foregoing description of the embodiments of this application, multiple features are sometimes grouped into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those mentioned in the claims. In fact, the features of an embodiment are less than all the features of a single embodiment disclosed above.

[0078] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A clamping and positioning device for blade surface quality measurement, characterized in that: The clamping and positioning device comprises: Base plate; A left side plate and a right side plate are mounted on the bottom plate, and are located on the left and right sides of the bottom plate respectively; A front cover plate and a rear cover plate, respectively connected between the left side plate and the right side plate, and located at the front and rear sides of the bottom plate; A screw rod, one end of which is connected to the left side plate, and the other end of which is connected to the right side plate; at least two moving components, wherein the moving components are threadedly connected to the screw; A rotating component, the rotating component is mounted on the left plate or the right plate and connected to the screw rod; The rotating component is screwed to drive the screw rod to rotate, so that the moving components move toward each other, and the blades are clamped and positioned between the moving components.

2. The clamping and positioning device for blade surface quality measurement according to claim 1, characterized in that: Both ends of the screw rod are provided with threads.

3. The clamping and positioning device for blade surface quality measurement according to claim 1, characterized in that: The rotating component is a hand wheel.

4. The clamping and positioning device for blade surface quality measurement according to claim 2, characterized in that: Each of the moving components includes a rotating nut and a moving block, wherein the rotating nut is passed through the screw rod and cooperates with the thread of the screw rod; The moving block is connected to the rotating nut so that the moving block moves together with the rotating nut.

5. The clamping and positioning device for blade surface quality measurement according to claim 4, characterized in that: A groove is provided on the outer side surface of the moving block, and the rotating nut is installed in the groove.

6. The clamping and positioning device for blade surface quality measurement according to claim 4, characterized in that: Each of the moving components also includes a guide, which is connected to the lower end of the moving block and is used to control the moving direction of the moving block.

7. The clamping and positioning device for blade surface quality measurement according to claim 4, characterized in that: Each of the moving components further comprises a clamping block, which is connected to the upper end of the moving block so that the clamping block moves together with the moving block and is used to fix the left-right position of the blade.

8. The clamping and positioning device for blade surface quality measurement according to claim 7, characterized in that: Each of the moving components also includes a blocking block, which is connected to the clamping block and is used to fix the front-to-back position of the blade.

9. The clamping and positioning device for blade surface quality measurement according to claim 7, characterized in that: The inner surface of the clamping block is completely fitted with the tenon tooth surface of the tenon of the blade.

10. The clamping and positioning device for blade surface quality measurement according to claim 8, characterized in that: The inner surface of the blocking block is completely in contact with the front working surface of the tenon of the blade.