Tool and method for measuring weight distance of composite material fan blade

Abstract

The invention provides a tool and method for measuring the weight distance of a composite material fan blade, and the tool comprises a tool mortise, a plurality of Archimedes screw jacks and a top plate, the Archimedes screw jacks are respectively installed at the upper part and the lower part of the tool mortise, the top plate is installed on the installation surface in the tool mortise, and the Archimedes screw jacks are connected with the tool mortise. The bottoms of the composite material fan blades are connected into the tool mortises; and the jacking force corresponding to the centrifugal load of the blade is applied to the bottom of the composite material fan blade through the Archimedes screw jack, and the working face of the blade is jacked against the mounting face in the tool mortise. According to the invention, the Archimedes screw jack is installed in the composite material blade weight distance measuring tool, and the jacking force corresponding to the centrifugal load of the blade is applied to the bottom of the composite material fan blade, so that the working surface of the blade is tightly jacked with the mounting surface of the mortise of the tool; the problem that the measurement result is unstable due to the fact that the composite material fan blade weight distance measurement blade is unstable is solved.

Description

Technical Field

[0001] The invention relates to the field of aeroengine design, and in particular to a tool and a measuring method for measuring the weight distance of a composite material fan blade. Background Art

[0002] The use of composite fan blades in civil high bypass ratio aircraft engines has achieved industry-recognized technical and commercial success. Composite materials have the advantages of high specific strength and specific stiffness, excellent corrosion resistance, fatigue resistance, and strong designability. The use of composite fan blades can achieve overall weight reduction of aircraft engine structures, significantly improve their fuel efficiency, and enhance the economy and market competitiveness of aircraft engines.

[0003] Due to its manufacturing characteristics, the blade weight distance of composite fan blades fluctuates more and has poorer stability than metal blades. The accurate measurement of its weight distance is related to the formulation of the acceptance standard of composite fan blades and the dynamic balance of the entire engine, and is a necessary prerequisite for giving full play to the advantages of composite fan blades.

[0004] In view of this, the inventor of the present application has designed a tool and a measuring method for measuring the weight distance of a composite fan blade in order to overcome the above-mentioned technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of poor installation stability and low weight distance measurement accuracy of composite fan blades in the prior art, and to provide a tool and measurement method for measuring the weight distance of composite fan blades.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A tool for measuring the weight distance of a composite material fan blade, characterized in that the tool comprises a tool mortise, a plurality of Archimedes screw jacks and a top plate, wherein the Archimedes screw jacks are respectively mounted on the upper and lower parts of the tool mortise, the top plate is mounted on a mounting surface in the tool mortise, and the bottom of the composite material fan blade is connected to the tool mortise;

[0008] The Archimedean screw jack is used to apply a tightening force corresponding to the centrifugal load of the blade to the bottom of the composite fan blade, so that the working surface of the blade and the mounting surface in the tooling groove are tightened.

[0009] According to one embodiment of the present invention, the Archimedean screw jack corresponds to the tooling mortise and tenon groove up and down.

[0010] According to an embodiment of the present invention, baffles are respectively installed on both sides of the tooling mortise and tenon.

[0011] According to one embodiment of the present invention, one end of the tooling groove is provided with an opening for connecting the composite fan blade, and the other end is a closed end, and the Archimedes screw jack is installed at the other end of the tooling groove.

[0012] The present invention also provides a method for measuring the weight distance of a composite material fan blade, which is characterized in that the measuring method comprises the following steps:

[0013] S 1 , install the tooling mortise and tenon to the weight distance measuring instrument;

[0014] S 2 , installing the composite material fan blade into the tooling mortise and tenon groove;

[0015] S 3 , by adjusting the Archimedes screw jack, the tightening force corresponding to the centrifugal load of the blade is applied to the bottom of the composite fan blade, and the working surface of the blade is tightened against the installation surface in the tooling groove.

[0016] According to one embodiment of the present invention, the step S 2 Included:

[0017] S 21 , install the lateral baffle on the air inlet side of the blade;

[0018] S 22 , stably installing the composite material fan blade into the tooling mortise and tenon groove;

[0019] S 23 , adjust the Archimedes screw jack, adjust the top plate to the bottom of the composite fan blade, apply a tightening force equal to the centrifugal force of the fan blade, and push the composite fan blade until the working surface of the blade tenon is in full contact with the mounting surface of the tooling tenon groove, and the blade is stable.

[0020] According to one embodiment of the present invention, the step S 2 Also included: S 24 , install the blade trailing edge side baffle.

[0021] According to one embodiment of the present invention, the step S 1 The weight of the composite fan blade is 叶片 Calculated as follows:

[0022] Ф 叶片 =Ф 测 +m 叶片 (R 扇盘 -R 工装 )

[0023] Among them, Ф 测is the blade weight distance measured by the tooling, R 扇盘 is the engine fan disk mass center, R 工装 is the center of mass of the tooling.

[0024] The positive and progressive effects of the present invention are:

[0025] The present invention discloses a tool and a measuring method for measuring the weight distance of a composite fan blade. An Archimedean screw jack is installed inside the composite fan blade weight distance measuring tool, a tightening force corresponding to the blade centrifugal load is applied to the bottom of the composite fan blade, and the blade working surface is tightened against the tool mortise and tenon mounting surface, thereby solving the problem of unstable measurement results caused by unstable blades in the composite fan blade weight distance measuring tool.

[0026] The present invention directly installs the tooling on the weight distance tester, and the tooling itself does not perform equivalence on the blade center of mass. The problem of the tooling equivalent tenon groove being too long is solved through the weight distance calculation conversion formula. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 The figure is a side view of the tooling for measuring the weight distance of a composite material fan blade according to the present invention.

[0029] Figure 2 The figure is a top view of the tooling for measuring the weight distance of a composite material fan blade according to the present invention.

[0030] [Reference Signs]

[0031] Tooling mortise and tenon 10

[0032] Archimedes Screw Jack 20

[0033] Top plate 30

[0034] Composite fan blade 40

[0035] Mounting surface 11

[0036] Baffle 50

[0037] Opening 12 DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Figure 1 The figure is a side view of the tooling for measuring the weight distance of a composite material fan blade according to the present invention. Figure 2 The figure is a top view of the tooling for measuring the weight distance of a composite material fan blade according to the present invention.

[0043] The present invention discloses a tool for measuring the weight distance of a composite fan blade, which includes a tool mortise and tenon 10, a plurality of Archimedes screw jacks 20 and a top plate 30. The Archimedes screw jacks 20 are respectively installed at the upper and lower parts of the tool mortise and tenon 10, the top plate 30 is installed on the mounting surface 11 in the tool mortise and tenon 10, and the bottom of the composite fan blade 40 is connected to the tool mortise and tenon 10. The Archimedes screw jack 20 applies the tightening force corresponding to the centrifugal load of the blade to the bottom of the composite fan blade 40, and tightens the working surface of the blade to the mounting surface 11 in the tool mortise and tenon 10.

[0044] Preferably, the Archimedean screw jack 20 corresponds to the tooling mortise and tenon 10 up and down.

[0045] In addition, more preferably, baffles 50 are respectively installed on both sides of the tooling groove 10.

[0046] Furthermore, an opening 12 is provided at one end of the tooling mortise and tenon 10 for connecting the composite fan blade 40 , and the other end is a closed end. The Archimedean screw jack 20 is installed at the other end of the tooling mortise and tenon 10 .

[0047] According to the above structural description, the present invention also provides a method for measuring the weight distance of a composite fan blade, which comprises the following steps:

[0048] Step S 1 , install the tooling mortise and tenon to the weight distance measuring instrument.

[0049] Preferably, the step S 1 The weight of the composite fan blade is叶片 Calculated as follows:

[0050] Ф 叶片 =Ф 测 +m 叶片 (R 扇盘 -R 工装 )

[0051] Among them, Ф 测 is the blade weight distance measured by the tooling, R 扇盘 is the engine fan disk mass center, R 工装 is the center of mass of the tooling, m 叶片 The mass of the blade.

[0052] Step S 2 , install the composite fan blade into the tooling groove.

[0053] The step S 2 Included:

[0054] Step S 21 , install the side baffle on the air inlet side of the blade.

[0055] Step S 22 , smoothly install the composite fan blade into the tooling groove.

[0056] Step S 23 , adjust the Archimedes screw jack, adjust the top plate to the bottom of the composite fan blade, apply a tightening force equal to the centrifugal force of the fan blade, and push the composite fan blade until the working surface of the blade tenon is in full contact with the mounting surface of the tooling tenon groove, and the blade is stable.

[0057] Further preferably, the step S 2 Also included: S 24 , install the blade trailing edge side baffle.

[0058] Step S 3 , by adjusting the Archimedes screw jack, the tightening force corresponding to the centrifugal load of the blade is applied to the bottom of the composite fan blade, and the working surface of the blade is tightened against the installation surface in the tooling groove.

[0059] The invention discloses a tooling for measuring the weight distance of a composite fan blade. An Archimedean screw jack is installed inside the tooling, and a tightening force equal to the centrifugal force of the composite fan blade is applied to the bottom of the blade to tighten the composite fan blade to the tooling mortise and tenon groove, thereby solving the problem of blade installation stability.

[0060] The tooling for measuring the weight distance of a composite material fan blade is directly installed on a weight distance tester. The tooling itself does not perform equivalence on the blade center of mass. The weight distance calculation conversion formula is used to solve the problem of the tooling equivalent tenon groove being too long.

[0061] The invention is a tool for measuring the weight distance of composite fan blades, which solves the problem of blade installation stability in the weight distance measurement of composite fan blades and solves the problem of excessive length of the equivalent tenon groove of the tool for measuring the weight distance of composite fan blades.

[0062] In summary, the present invention is a tool and a measuring method for measuring the weight distance of a composite fan blade. By installing an Archimedes screw jack inside the composite blade weight distance measuring tool, a tightening force corresponding to the blade centrifugal load is applied to the bottom of the composite fan blade, and the blade working surface is tightened against the tooling mortise and tenon mounting surface, thereby solving the problem of unstable measurement results caused by unstable blades in the composite fan blade weight distance measurement.

[0063] The present invention directly installs the tooling on the weight distance tester, and the tooling itself does not perform equivalence on the blade center of mass. The problem of the tooling equivalent tenon groove being too long is solved through the weight distance calculation conversion formula.

[0064] 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.

[0065] 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.

[0066] 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 tool for measuring the weight distance of composite fan blades, characterized in that: The tooling comprises a tooling mortise, a plurality of Archimedes screw jacks and a top plate, wherein the Archimedes screw jacks are respectively mounted on the upper and lower parts of the tooling mortise, the top plate is mounted on a mounting surface in the tooling mortise, and the bottom of the composite material fan blade is connected to the tooling mortise; The Archimedean screw jack is used to apply a tightening force corresponding to the centrifugal load of the blade to the bottom of the composite fan blade, so that the working surface of the blade and the mounting surface in the tooling groove are tightened.

2. The tooling for measuring the weight distance of composite fan blades according to claim 1, characterized in that: The Archimedean screw jack corresponds to the tooling mortise and tenon groove up and down.

3. The tooling for measuring the weight distance of composite material fan blades according to claim 1, characterized in that: Baffles are respectively installed on both sides of the tooling mortise and tenon.

4. The tooling for measuring the weight distance of composite material fan blades according to claim 1, characterized in that: One end of the tooling mortise and tenon is provided with an opening for connecting a composite material fan blade, and the other end is a closed end, and the Archimedes screw jack is installed at the other end of the tooling mortise and tenon.

5. A method for measuring the weight distance of a composite fan blade, characterized in that: The measuring method comprises the following steps: S1. Install the tooling mortise and tenon to the weight distance measuring instrument; S2, installing the composite fan blade into the tooling groove; S3. By adjusting the Archimedean screw jack, the tightening force corresponding to the centrifugal load of the blade is applied to the bottom of the composite fan blade, and the working surface of the blade is tightened against the installation surface in the tooling groove.

6. The method for measuring the weight distance of a composite material fan blade according to claim 5, characterized in that: The step S2 includes: S 21 , install the lateral baffle on the air inlet side of the blade; S 22 , stably installing the composite material fan blade into the tooling mortise and tenon groove; S 23 , adjust the Archimedes screw jack, adjust the top plate to the bottom of the composite fan blade, apply a tightening force equal to the centrifugal force of the fan blade, and push the composite fan blade until the working surface of the blade tenon is in full contact with the mounting surface of the tooling tenon groove, and the blade is stable.

7. The method for measuring the weight distance of a composite material fan blade according to claim 5, characterized in that: The step S2 also includes: 24 , install the blade trailing edge side baffle.

8. The method for measuring the weight distance of a composite material fan blade according to claim 5, characterized in that: The weight of the composite fan blade in step S1 is Φ 叶片 Calculated as follows: F 叶片 =F 测 +m 叶片 (R 扇盘 -R 工装 ) Among them, Ф 测 is the blade weight distance measured by the tooling, R 扇盘 is the center of mass of the engine fan disk, R 工装 is the center of mass of the tooling.

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