Positioning deviation compensation piece for blade roughness measurement and compensation method thereof

Abstract

The invention provides a positioning deviation compensation piece for blade roughness measurement and a compensation method thereof, the positioning deviation compensation piece comprises a tenon, a citron plate and a blade body, the citron plate is installed on the tenon, and the blade body is installed on the citron plate; the upper surface and the lower surface of the tenon are parallel, the front surface and the rear surface of the tenon are parallel, the upper surface, the lower surface and the front surface and the rear surface are correspondingly perpendicular to each other, and the two side surfaces of the tenon are in bilateral symmetry. According to the invention, the calculation and compensation of the blade surface positioning deviation are realized, the problem of inaccurate positioning position during positioning measurement is solved, and the measurement precision is improved.

Description

Technical Field

[0001] The invention relates to the field of surface roughness measurement of aircraft engine blades, and in particular to a positioning deviation compensation component for blade roughness measurement and a compensation method thereof. Background Art

[0002] As the most important core component of the engine, aircraft engine blades have complex shapes, large bending and torsion, and complex processing technology. 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] The surface quality of a blade depends on its surface morphology, and roughness is an important indicator parameter of surface morphology, which is used to characterize the microscopic geometric error of the surface. Good blade surface roughness can make the stress distribution on the blade surface more uniform, reduce stress concentration and the appearance of microcracks, and thus effectively improve the fatigue life of the blade. In addition, it can also make the blade profile smoother, which is conducive to reducing the wind resistance on the blade surface and is of great benefit to improving the aerodynamic performance and work efficiency of the blade. Therefore, it is necessary to detect and control the surface roughness of aircraft engine blades.

[0004] With the advancement of technology, optical 3D measurement technology has gradually been applied to the field of roughness measurement, expanding the measurement of roughness from 2D line measurement to 3D surface measurement. Conventional optical 3D measurement equipment is mainly used to measure simple and regular surface of parts such as planes and spheres. For irregular and complex surfaces such as blades, it is also necessary to add positioning functions to accurately measure the specified position of the blade surface.

[0005] When measuring the specified position on the blade surface, due to the influence of the fixture, clamping process, etc., there is a deviation between the actual positioning position and the theoretical movement position, which affects the measurement result.

[0006] In view of this, the inventor of the present application has designed a positioning deviation compensation component and a compensation method thereof for blade roughness measurement, in order to overcome the above-mentioned technical problems. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects in the prior art that, when positioning and measuring a specified position on the blade surface, there is a deviation between the actual positioning position and the theoretical movement position, which affects the measurement result, and to provide a positioning deviation compensation part for blade roughness measurement and a compensation method thereof.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] A positioning deviation compensating member for blade roughness measurement, characterized in that the positioning deviation compensating member comprises a tenon, a rafter and a blade body, the rafter is mounted on the tenon, and the blade body is mounted on the rafter;

[0010] The upper and lower surfaces of the tenon are parallel, the front and rear surfaces are parallel, and the upper and lower surfaces and the front and rear surfaces are perpendicular to each other, and the two side surfaces of the tenon are symmetrical.

[0011] According to an embodiment of the present invention, two side surfaces of the tenon protrude outwards respectively and have an angle of 90 degrees.

[0012] According to an embodiment of the present invention, the citron plate is a rectangular parallelepiped, and the upper and lower surfaces of the citron plate are parallel to the upper and lower surfaces of the tenon, and the front and rear surfaces of the citron plate are parallel to the front and rear surfaces of the tenon.

[0013] According to an embodiment of the present invention, the blade body extends from a cross section in a direction perpendicular to the upper and lower surfaces of the tenon.

[0014] According to one embodiment of the present invention, the cross section includes a convex surface, a concave surface, a leading edge and a trailing edge that surround each other, the leading edge is parallel to the front surface of the citron plate, and the trailing edge is parallel to the rear surface of the citron plate.

[0015] According to an embodiment of the present invention, the convex surface and the concave surface are two cylindrical surfaces.

[0016] According to an embodiment of the present invention, the tenon, the rafter and the blade body are made of wear-resistant metal material.

[0017] The present invention also provides a positioning deviation compensation method for blade roughness measurement, which is characterized in that the positioning deviation compensation method adopts the positioning deviation compensation member for blade measurement as described above, and the positioning deviation compensation method comprises: selecting an edge point on the top surface of the blade body as a compensation reference point, positioning to the compensation reference point, taking the position of the compensation reference point in the field of view as the initial position A, and recording the grating values ​​in the X and Y directions at this time;

[0018] Manually move the compensation reference point in the X and Y directions to make it reach the center position B of the field of view, and record the grating values ​​in the X and Y directions at this time; use the difference between the center position B and the initial position A in the X and Y directions as the compensation values ​​in the X and Y directions, respectively, and input them into the compensation algorithm to automatically complete the compensation correction operation.

[0019] The positive and progressive effects of the present invention are:

[0020] The positioning deviation compensating member and compensation method for blade roughness measurement of the present invention realize the calculation and compensation of the positioning deviation of the blade surface, solve the problem of inaccurate positioning position in positioning measurement, and improve the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 It is a schematic structural diagram of the positioning deviation compensation component used for blade roughness measurement of the present invention.

[0023] Figure 2 It is a top view of the positioning deviation compensating member for blade roughness measurement according to the present invention.

[0024] Figure 3 It is a principle diagram of the positioning deviation compensation method for blade roughness measurement according to the present invention.

[0025] [Reference Signs]

[0026] Tenon 10

[0027] Citron 20

[0028] Leaf body 30

[0029] Upper and lower surfaces 11

[0030] Front and rear surfaces 12

[0031] Two side surfaces 13

[0032] Upper and lower surfaces 21

[0033] Front and rear surfaces 22

[0034] Convex 31

[0035] Concave 32

[0036] Leading edge 33

[0037] Trailing edge 34

[0038] Edge Point 40 DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are shown in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0041] Furthermore, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the present invention specification 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 document.

[0042] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0043] like Figure 1 and Figure 2 As shown, the present invention discloses a positioning deviation compensation component for blade roughness measurement, which includes a tenon 10, a rafter 20 and a blade body 30, wherein the rafter 20 is mounted on the tenon 10, and the blade body 30 is mounted on the rafter 20. The upper and lower surfaces 11 of the tenon 10 are parallel, and the front and rear surfaces 12 are parallel, and the upper and lower surfaces 11 and the front and rear surfaces 12 are perpendicular to each other. In addition, the two side surfaces 13 of the tenon 10 are left-right symmetrical.

[0044] Preferably, the two side surfaces 13 of the tenon 10 protrude outwards respectively and have an angle of 90 degrees.

[0045] Preferably, the rafter 20 is configured as a cuboid, and the upper and lower surfaces 21 of the rafter 20 are parallel to the upper and lower surfaces 11 of the tenon 10 , and the front and rear surfaces 22 of the rafter 20 are parallel to the front and rear surfaces of the tenon 10 .

[0046] Further preferably, the blade body 30 extends from a cross section in a direction perpendicular to the upper and lower surfaces of the tenon 10 .

[0047] The cross section includes a convex surface 31, a concave surface 32, a leading edge 33 and a trailing edge 34 that surround each other. The leading edge 33 is parallel to the front surface of the rafter 20 at a distance L1. The trailing edge 34 is parallel to the rear surface of the rafter 20 at a distance L2.

[0048] In addition, the convex surface 31 and the concave surface 32 are preferably two cylindrical surfaces. The tenon 10, the rafter plate 20 and the blade body 30 are made of wear-resistant metal materials.

[0049] The present invention also provides a positioning deviation compensation method for blade roughness measurement, which adopts the positioning deviation compensation part for blade measurement as described above. The positioning deviation compensation method includes: selecting an edge point 40 on the top surface of the blade body as a compensation reference point, positioning to the compensation reference point, taking the position of the compensation reference point in the field of view as the initial position A, and recording the grating values ​​in the X and Y directions at this time.

[0050] Manually move the X and Y directions to make the compensation reference point reach the center position B of the field of view, and record the grating values ​​in the X and Y directions at this time. The difference between the center position B and the initial position A in the X and Y directions is used as the compensation value in the X and Y directions, respectively, and input into the compensation algorithm to automatically complete the compensation correction operation.

[0051] The present invention is a positioning deviation compensation method for blade roughness measurement. A compensation part and a compensation method for positioning deviation are designed based on the blade shape. The deviation amount to be compensated is calculated through edge points on the compensation part, and the deviation compensation is achieved through a compensation algorithm.

[0052] In summary, the positioning deviation compensation component and compensation method for blade roughness measurement of the present invention realize the calculation and compensation of the positioning deviation of the blade surface, solve the problem of inaccurate positioning position during positioning measurement, and improve the measurement accuracy.

[0053] 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.

[0054] 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.

[0055] Similarly, it should be noted that in order to simplify the description disclosed in this application and thus help understand one or more embodiments of the invention, in the foregoing description of the embodiments of the present application, multiple features are sometimes merged 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 the implementation are less than all the features of the single implementation disclosed above. In some implementations, numbers are used to describe the number of components and attributes. It should be understood that such numbers used to describe the implementations are modified in some examples using the modifiers "approximately", "approximately" or "substantially".

[0056] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art 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 principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A positioning deviation compensation component for blade roughness measurement, characterized in that: The positioning deviation compensation component includes a tenon, a rafter and a blade body, wherein the rafter is mounted on the tenon, and the blade body is mounted on the rafter; The upper and lower surfaces of the tenon are parallel, the front and rear surfaces are parallel, and the upper and lower surfaces and the front and rear surfaces are perpendicular to each other, and the two side surfaces of the tenon are symmetrical.

2. The positioning deviation compensation member for blade measurement according to claim 1, characterized in that: The two side surfaces of the tenon protrude outwards respectively and have an angle of 90 degrees.

3. The positioning deviation compensator for blade measurement according to claim 1, characterized in that: The citron plate is a rectangular parallelepiped, and the upper and lower surfaces of the citron plate are parallel to the upper and lower surfaces of the tenon, and the front and rear surfaces of the citron plate are parallel to the front and rear surfaces of the tenon.

4. The positioning deviation compensator for blade measurement according to claim 1, characterized in that: The blade body extends from a cross section in a direction perpendicular to the upper and lower surfaces of the tenon.

5. The positioning deviation compensating member for blade measurement according to claim 4, characterized in that: The cross section includes a convex surface, a concave surface, a leading edge and a trailing edge that surround each other. The leading edge is parallel to the front surface of the citron plate, and the trailing edge is parallel to the front surface of the citron plate.

6. The positioning deviation compensating member for blade measurement according to claim 5, characterized in that: The convex surface and the concave surface are two cylindrical surfaces.

7. The positioning deviation compensating member for blade measurement according to claim 4, characterized in that: The tenon, the rafter plate and the blade body are made of wear-resistant metal material.

8. A positioning deviation compensation method for blade roughness measurement, characterized in that: The positioning deviation compensation method adopts the positioning deviation compensation member for blade measurement according to any one of claims 1 to 7, and the positioning deviation compensation method comprises: selecting an edge point on the top surface of the blade body as a compensation reference point, positioning to the compensation reference point, taking the position of the compensation reference point in the field of view as the initial position A, and recording the grating values ​​in the X and Y directions at this time; Manually move the compensation reference point in the X and Y directions to make it reach the center position B of the field of view, and record the grating values ​​in the X and Y directions at this time; use the difference between the center position B and the initial position A in the X and Y directions as the compensation values ​​in the X and Y directions, respectively, and input them into the compensation algorithm to automatically complete the compensation correction operation.

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