CN116608759A - Measuring device and measuring method for guide vane rotation angle - Google Patents

Abstract

The application provides a measuring device for the rotation angle of a guide vane of a guide device, which comprises the following components: an active rocker arm of the guide; the fixture body is fixed on the driving rocker arm of the guider; the pointer, the pressing plate and the rotary fixing device are sequentially fixed on the clamp body through the rotary fixing device; the dial is fixed between the clamp body and the pressing plate. Through measuring device's pointer and calibrated scale integration, need not to separately assemble during the use, can directly whole install on the finish machining mating surface of the initiative rocking arm of director, reduced the detection error because of the mounting fixture brings, improved director guide vane angle measurement's credibility. Meanwhile, the dial can be rotated and adjusted by 360 degrees so as to adapt to detection of the rotation angle of the guide vane under different states.

Description

Measuring device and measuring method for guide vane rotation angle

Technical Field

The specification relates to the technical field of aeroengine assembly, in particular to a measuring device and a measuring method for a guide vane rotation angle.

Background

The adjustable guide is an important part on an aeroengine, and the accuracy of the rotation angle of the guide vane of the adjustable guide determines the performance, the energy efficiency ratio and the working reliability of the engine. This determinant depends on the manufacturing, assembly and inspection accuracy of the adjustable guide component. The improvement of the detection precision can effectively improve the assembly quality.

The adjustable guider is a key component of a new generation of self-adaptive variable cycle aero-engine, and consists of an inner and outer casing, adjustable guide vanes, a linkage ring, an actuator (actuator cylinder with a controller) and an angular displacement sensor core component. Compared with the engines of the third generation and the fourth generation, the structure of the engine has simplicity, and has no structure of adjusting a link mechanism, a pointer dial and the like. In the assembly process, the adjustable guide device does not have a mechanical structure for identifying the rotation angle of the adjustable guide blade, and the angular displacement sensor is higher in angular accuracy, but before being used, the actual angle of the adjustable guide blade needs to be input for calibration. Therefore, intervention of a special tool is needed, the actual rotation angle of the adjustable guide vane is identified through the special tool, the angular displacement sensor is calibrated, and the consistency of the rotation angles of the special tool and the adjustable guide vane is detected through the angular displacement sensor.

The general solution is to design a process pointer and a dial to detect the rotation angle of the adjustable guide vane, wherein the process pointer needs to be arranged on the rotating shaft of the adjustable guide vane, and the process dial is arranged on the mounting edge of the adjustable guide vane casing. The method for reducing the structure of the third generation engine and the fourth generation engine is adopted to identify the rotation angle of the guide vane, but the new generation engine is designed to actively discard the pointer dial, so that the process pointer and the dial are not installed at proper positions, and a large amount of angle detection errors are caused by assembly errors of the process pointer and the dial. In addition, the traditional dial is poor in precision (approximately 1 lattice of 1 degree) due to the fact that the width of a machined score line is machined, the precision of identifying the rotation angle of the adjustable guide vane is poor, and the calibration requirement of the high-precision angular displacement sensor cannot be met.

Disclosure of Invention

In view of this, the embodiments of the present disclosure provide a device and a method for measuring the rotation angle of a guide vane, so as to achieve the purpose of accurately measuring the rotation angle of the guide vane.

The embodiment of the specification provides the following technical scheme:

a device for measuring the angle of rotation of a guide vane of a guide, an active rocker fixed to the guide, comprising:

the clamp body is fixed on the driving rocker arm of the guider;

the pointer, the pressing plate and the rotary fixing device are sequentially fixed on the clamp body through the rotary fixing device;

and the dial is fixed between the clamp body and the pressing plate.

Further, the dial is connected with the clamp body through the pressing plate, and the pointer is rotatable relative to the dial.

Further, the rotation fixing device includes:

the screw passes through the pointer and the pressing plate in sequence and then is fixed on the clamp body through the nut, and the bearing is arranged at the connecting part of the pointer and the screw.

Further, the measuring device for the guide vane rotation angle of the guide vane further comprises a knurled flat head screw, and the clamp body is fixed on the driving rocker arm of the guide vane through the knurled flat head screw.

A measuring method of the turning angle of a guide vane is applied to a measuring device of the turning angle of the guide vane of a guide, and comprises the following steps:

hanging and installing the measuring device on an active rocker arm of the guider, and fixing the measuring device by using knurled flat head screws;

rotating the dial and adjusting the dial to a proper angle;

the lower hem of the pointer is stirred, after the lower hem is naturally static, an initial angle is read through the position of a zero line of the pointer relative to the dial, and the angle is taken as the initial angle;

rotating the guide vane, and reading a first rotation angle through the position of the pointer relative to the dial;

calculating a final rotation angle of the guide vane, wherein the final rotation angle is a difference value between the first rotation angle and the initial angle;

and rotating the guide vane of the guide device, repeating the first two steps, calculating a plurality of final rotation angles, and respectively inputting the final rotation angles to the angular displacement sensor.

Further, adjusting the dial to a suitable angle includes:

adjusting the guide vane to a zero position of the engine;

the zero line of the dial is adjusted to be perpendicular to the horizontal plane.

Further, the reading angle includes:

the angle includes an integer portion and a decimal portion;

reading an integer scale of the zero line position of the pointer on the dial, and setting the integer scale as an integer part of the angle;

judging the rotation direction of the pointer relative to the dial;

if the rotation direction is clockwise, reading a zero line of the pointer along the clockwise direction to be closest to the aligned line on the dial;

if the rotation direction is counterclockwise, reading the zero line of the pointer in the counterclockwise direction from the closest aligned line on the dial;

the number of scribe lines of the scribe line distance pointer of zero scribe line is multiplied by 0.1 ° and the result is set to the decimal part of the angle.

Further, taking the angle as the initial angle includes:

repeating the reading angle three times;

if the angle values read for the three times are the same, the angle values are used as initial angles;

if the angle value read in any one of the three times is different from the angle value read in the other two times, the initial angle is read again after the measuring device is checked or reinstalled.

Further, the method further comprises the following steps:

after the measurement is finished, the guide vane of the guide device is adjusted to the zero position of the engine;

rotating the dial and adjusting the dial to a proper angle, and reading the initial checking angles of the dial and the pointer;

if the initial angle is verified to be the same as the initial angle, the measurement is effective;

if the initial angle is different from the initial angle, the measurement is invalid and the measurement is repeated.

Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:

the pointer and the dial of the measuring device are integrated, and the measuring device can be directly and integrally mounted on the finish machining matching surface of the driving rocker arm of the guide device without being assembled separately when in use, so that the detection error caused by the mounting fixture is reduced, and the reliability of guide blade angle measurement of the guide device is improved. Meanwhile, the dial can be rotated and adjusted by 360 degrees so as to adapt to detection of the rotation angle of the guide vane under different states.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a measuring device according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of A-A of the measuring device of FIG. 1;

FIG. 3 is an enlarged schematic view of portion B of the measuring device of FIG. 2;

FIG. 4 is a schematic view of a measuring device according to an embodiment of the present application with the dial rotated 90 degrees;

FIG. 5 is a front view of a pointer of a measuring device according to an embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of the measuring device pointer A-A of FIG. 5;

FIG. 7 is a front view of a screw of a measuring device according to an embodiment of the present application;

FIG. 8 is a front view of a clamp body of a measuring device according to an embodiment of the present application;

FIG. 9 is a cross-sectional view of a clamp body of a measuring device according to an embodiment of the present application;

FIG. 10 is a front view of a platen of a measuring device according to an embodiment of the present application;

FIG. 11 is a schematic cross-sectional view of the platen A-A of FIG. 10;

FIG. 12 is a front view of a dial of a measuring device according to an embodiment of the present application;

FIG. 13 is a schematic cross-sectional view of the dial A-A of FIG. 12;

FIG. 14 is an exemplary graph of angle readings for a measurement method according to an embodiment of the present application.

Reference numerals illustrate: 1. a clamp body; 2. a pointer; 3. knurled flat head screws; 4. a screw; 5. a nut; 6. a bearing; 7. a dial; 8. a pressing plate; 9. an active rocker arm of the guide.

Detailed Description

Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Other advantages and effects of the present application will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present application with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

The guide consists of guide vanes, active rocker arms and other parts, the active rocker arms 9 of the guide are installed on the guide vanes through the finish machining matching surfaces, and the rotating angle of the active rocker arms is the rotating angle of the guide vanes. The measuring device of the embodiment of the application measures the rotation angle of the guide vane, and is arranged on the active rocker arm 9 of the guide.

The following describes the technical scheme provided by each embodiment of the present application with reference to the accompanying drawings.

Referring to fig. 1, 2, 3, 5, 6, 7, 8, 9, 10, 11, 12, and 13, a measuring device for a turning angle of a guide vane according to an embodiment of the present application includes: the clamp comprises a clamp body 1, a pointer 2, a knurled flat head screw 3, a dial 7, a pressing plate 8 and a rotary fixing device. Wherein the rotational fixation means comprise a screw 4, a nut 5 and a bearing 6.

The clamp body 1 is fixed on an active rocker 9 of the guide. The pointer 2 and the pressing plate 8 are sequentially fixed on the clamp body 1 through a rotary fixing device, and the dial 7 is fixed between the clamp body 1 and the pressing plate 8. The screw 4 passes through the pointer 2 and the pressing plate 8 in sequence and then is fixed on the clamp body 1 through the nut 5, and the bearing 6 is arranged at the connecting part of the pointer 2 and the screw 4. The dial 7 is connected with the clamp body 1 through a pressing plate 8. The pointer 2 is rotatable relative to the dial 7 and the dial 7 relative to the clamp body 1 by rotating the fixing device. The dial 7 can be rotated and adjusted by 360 degrees relative to the clamp body 1 (i.e. relative to the active rocker 9 of the guide) so as to adapt to the rotation angle detection of the guide vane in different states (although the rotation angle range of the guide vane is not large, the different postures of the engine require that the measuring device can detect and use in 360 degrees). The screw 4 is used for axially pressing the pointer 2, the pressing plate 8 and the clamp body 1 along the screw 4 and fixing the dial 7 and the pointer 2 at the same center.

The pointer 2 and the dial 7 of the measuring device are integrated, and the measuring device is not required to be assembled on a guide vane rotating piece or a casing stator piece separately when in use, and can be directly and integrally installed on the finish machining matching surface of the driving rocker arm 9 of the guide, so that the detection error caused by installing the measuring device of the embodiment of the application is greatly reduced, and the reliability of guide vane angle measurement is improved.

The measuring device for measuring the rotation angle of the guide vane comprises the following steps:

the measuring device of the present embodiment is mounted suspended to the active rocker 9 of the guide and secured using knurled flat head screws 3. Specifically, after the knurled flat head screw 3 of the measuring device is unscrewed, the knurled flat head screw 3 is hung and mounted on the driving rocker arm 9 of the guider, and after the measuring device is positioned by utilizing the finish machining matching surface of the driving rocker arm 9 of the guider, the knurled flat head screw 3 is used for fastening.

The dial 7 is rotated and the dial 7 is adjusted to a proper angle. Specifically, as shown in fig. 4, the angle of the adjustment dial 7 is optionally rotated according to the state of the guide to be measured.

And (3) stirring the lower hem of the pointer 2, and reading the initial angle for three times through the position of the pointer 2 relative to the dial 7 after the lower hem is naturally stationary. If the initial angle values read for three times are the same, the angle values are used as initial angles, and if any one of the three times is different from the initial angle data read for other two times, the initial angles are read again after the measuring device is checked or reinstalled.

Specifically, the pointer 2 is gently stirred to make the lower hem, and after the pointer is naturally stationary, the initial angle is read. Repeating for 3 times, comparing 3 times to obtain the same angle value, and marking as X ₀ 。

The initial angle includes an integer part and a decimal part, and an integer scale of the position of the 0 scribe line of the pointer 2 on the scale 7 is read, and is set as the integer part of the initial angle. The rotation direction of the pointer 2 relative to the dial 7 is determined. If the direction of rotation is clockwise, then the zero line of the read pointer in the clockwise direction is the closest aligned line on the scale. If the direction of rotation is counter-clockwise, then the zero line of rotation of the read pointer in the counter-clockwise direction is the closest line of rotation on the dial to the aligned line of rotation. The number of scribe lines of zero scribe lines of the scribe line distance pointer is multiplied by 0.1 ° and the result is set to the decimal part of the initial angle.

Specifically, if the zero line is clockwise from the 3 rd line aligned with (or closest to aligned with) the scale 7 line, the fractional portion of the angle is 0.1 ° times 3=0.3°. If the zero line is aligned with the second line of the scale 7 (if no exactly aligned line is selected, then the closest aligned line) then the fractional part of the angle is 0.1 ° times 2=0.2°. As shown in fig. 14, the pointer 2 rotates clockwise, and the integral value of the reading angle on the dial at the position of the pointer zero line is 10 °. The zero score line is aligned with the 3 rd score line of the dial 7 clockwise and the fractional part of the angle is 0.1 ° times 3=0.3°. To sum up, the initial angle is 10.3 °. Conversely, if rotated counterclockwise, it is checked which score line of the zero score line of the pointer 2 is aligned with the scale score line (if there is no exactly aligned score line, then the closest aligned score line is selected).

And rotating the guide vane of the guide, taking the reading angle (the reading method is the same as the direction of reading the initial angle) as a first rotating angle, and calculating the final rotating angle of the guide vane, wherein the final rotating angle is the difference value between the first rotating angle and the initial angle.

And rotating the guide vane, repeating the steps after the first rotation angle is read to obtain a plurality of final rotation angles, and respectively inputting the final rotation angles to the angular displacement sensor to finish the calibration of the angular displacement sensor.

Specifically, the angle of the guide vane after rotation is read by the measuring device according to the embodiment of the application and recorded as X ₁ ，X ₁ -X ₀ X, angle X is the guide vane rotationAnd inputting the final rotation angle into the angular displacement sensor. And repeatedly adjusting the angle of the guide vane for several times, inputting the angle into the angular displacement sensor, and completing the calibration of the angular displacement sensor.

After the measurement is finished, in order to judge whether the relative guide vane of the measuring device is displaced in the use process, verification is needed. And when the initial angle is read, the guide vane to be measured is positioned at the zero position of the engine, and after the final rotation angle calculation is completed, the guide vane to be measured is restored to the zero position of the engine (the zero position of the engine can be determined by inserting a zero position pin) and the initial angle is read again. If the initial angles obtained by the two times are X ₀ The test result is effective if the measurement device does not displace relative to the guide vane in the use process, and the test result is not X ₀ Then the measurement needs to be re-made. The verification comprises the following steps:

adjusting the guide vane to a zero position of the engine;

rotating the dial 7 and adjusting the dial 7 to a proper angle, and reading the initial checking angles of the dial 7 and the pointer 2;

if the initial angle is verified to be the same as the initial angle, the measurement is effective;

if the initial angle is different from the initial angle, judging that the measurement is invalid and re-measuring once.

The embodiment of the application has the beneficial effects that: the pointer and the dial of the measuring device are integrated, and the measuring device does not need to be assembled on the guide vane rotating piece or the casing stator piece separately when in use, can be directly and integrally installed on the finish machining matching surface of the driving rocker arm of the guide device, so that the detection error caused by the installation fixture is greatly reduced, and the reliability of guide vane angle measurement is improved; the measuring principle of the vernier caliper is used for reference, the structure of a main scale (dial) and an auxiliary scale (pointer) is adopted, and the method for reading by utilizing the difference value between the scale spacing of the dial and the scale spacing of the pointer is utilized, so that the difficult problem of low manufacturing precision of the clamp is overcome from the design concept, and the reading precision is improved; the dial can be rotated and adjusted by 360 degrees, and the rotation angles of the guide vanes of the guide device in different states can be measured.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the method embodiments described later, since they correspond to the system, the description is relatively simple, and reference should be made to the description of some of the system embodiments.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (9)

1. A measuring device for the rotation angle of the guide vane of a guide, fixed to an active rocker (9) of the guide, characterized in that it comprises:

the fixture body (1), the fixture body (1) is fixed on the initiative rocker arm (9) of the guider;

the pointer (2), the pressing plate (8) and the rotary fixing device are sequentially fixed on the clamp body (1) through the rotary fixing device;

the dial (7), the dial (7) is fixed between the clamp body (1) and the pressing plate (8).

2. The measuring device of the turning angle of the guide vane according to claim 1, characterized in that the dial (7) is connected with the clamp body (1) by means of a pressing plate (8), and the pointer (2) is rotatable relative to the dial (7).

3. The guide vane angle of rotation measurement device of claim 1, wherein the rotational fixture comprises:

screw (4), nut (5) and bearing (6), on anchor clamps body (1) are fixed in through nut (5) after screw (4) pass pointer (2) and clamp plate (8) in proper order, and bearing (6) set up the connecting portion at pointer (2) and screw (4).

4. The measuring device of the turning angle of the guide vane according to claim 1, characterized in that the measuring device of the turning angle of the guide vane further comprises a knurled flat head screw (3), and the clamp body (1) is fixed on the driving rocker arm (9) of the guide by the knurled flat head screw (3).

5. A method for measuring a turning angle of a guide vane, applied to the measuring device for a turning angle of a guide vane according to any one of claims 1 to 4, comprising:

hanging the measuring device on an active rocker arm (9) of the guide and fixing the measuring device by using a knurled flat head screw (3);

rotating the dial (7) and adjusting the dial (7) to a suitable angle;

stirring a lower hem of the pointer (2), reading an angle through the position of a zero line of the pointer (2) relative to the dial (7) after the lower hem is naturally stationary, and taking the angle as an initial angle;

rotating the guide vane, reading an angle through the position of the pointer (2) relative to the dial (7), and taking the angle as a first rotating angle;

calculating a final rotation angle of the guide vane, wherein the final rotation angle is a difference between the first rotation angle and the initial angle;

and rotating the guide vane, repeating the first two steps, calculating a plurality of final rotation angles, and respectively inputting the final rotation angles to an angular displacement sensor.

6. A method of measuring the rotation angle of a guide vane according to claim 5, characterized in that adjusting the dial (7) to a suitable angle comprises:

adjusting the guide vane to a zero position of an engine;

the zero line of the dial (7) is adjusted to be perpendicular to the horizontal plane.

7. The method of measuring a vane rotation angle according to claim 5, wherein reading the angle comprises:

the angle includes an integer portion and a decimal portion;

reading an integer scale of the position of a zero line of the pointer (2) on the dial (7), setting the integer scale as the integer part of the angle;

judging the rotation direction of the pointer (2) relative to the dial (7);

if the rotation direction is clockwise, reading a zero line of the pointer (2) in the clockwise direction to be closest to the aligned line on the dial (7);

if the rotation direction is anticlockwise, reading a zero line of the pointer (2) in the anticlockwise direction from the closest aligned line on the dial (7);

multiplying the number of scribe lines of zero scribe lines of the scribe line distance pointer (2) by 0.1 ° and setting the result to the decimal part of the angle.

8. The method for measuring a turning angle of a guide vane according to claim 5, wherein taking the angle as an initial angle comprises:

repeating reading the angle three times;

if the angle values read for three times are the same, using the angle values as initial angles;

if any one of the three times is different from the angle values read by the other two times, the measuring device is checked or reinstalled and then read again.

9. The method of measuring a vane rotation angle according to claim 5, further comprising:

after the measurement is finished, the guide vanes of the guide device are adjusted to the zero position of the engine;

rotating the dial (7) and adjusting the dial (7) to a proper angle, and reading the initial checking angles of the dial (7) and the pointer (2);

if the initial angle is the same as the initial angle, the measurement is effective;

if the initial angle is different from the initial angle, the measurement is invalid and the measurement is repeated.