Propeller blade profile automatic detection device

Abstract

The invention provides a propeller blade profile automatic detection device which comprises a blade fixing support used for fixing a mounting part of a blade; the axial moving guide rail is arranged on one side of the paddle fixing support, and the length direction of the axial moving guide rail is arranged along the axial direction of the paddle; the molded surface detection assembly is movably mounted on the axial movement guide rail and is used for detecting the section molded surface of the paddle; and the position detection assembly is used for measuring the position of the molded surface detection assembly on the axial moving guide rail. According to the invention, propeller blades of different models or lengths can be adapted by changing the fixed interface of the blade fixing support, and the molded surface detection assembly is moved to different positions of the blade by axially moving the guide rail, so that molded surface data detection of the section at the position can be carried out; compared with a traditional clamping plate, the propeller blade profile measuring precision is greatly improved, operation is convenient, the structure is simple and reliable, the modularization degree is high, and the failure rate is low.

Description

Technical Field

[0001] The invention relates to the technical field of propeller blade profile testing, and in particular to an automatic propeller blade profile detection device. Background Art

[0002] The air propeller blade profile is designed to enable the blade to efficiently generate thrust and lift when rotating. Accurately measuring the profile can ensure that the actual shape of the blade meets the aerodynamic design requirements, so that the airflow flowing through the upper and lower surfaces of the blade can generate sufficient pressure difference, thereby efficiently generating thrust and lift. If there is a deviation in the profile, it will reduce the aerodynamic performance, affect the propeller's propulsion efficiency, and increase fuel consumption, just like changing the shape of an aircraft wing. In addition, in the manufacturing process, profile measurement is a key link in controlling product quality. It can test whether the manufacturing process is qualified, ensure that the profile of each blade meets the design standards, and ensure the consistency of the profile of mass-produced blades.

[0003] In the prior art, the angle of attack or the twist angle of the blade is mostly measured, but the profile data of the cross section of a certain position of the blade cannot be measured. Moreover, the structure is complex, the volume is large, and the cost is high. Summary of the invention

[0004] The object of the present invention is to provide a propeller blade profile automatic detection device, which can measure the profile data of a cross section at a certain position of the propeller, has a simple and reliable structure and a low failure rate.

[0005] The present invention provides an automatic detection device for the profile of a propeller blade, comprising: a blade fixing support, the blade fixing support is used to fix the mounting portion of the blade; an axial movable guide rail, the axial movable guide rail is arranged on one side of the blade fixing support, and the length direction is arranged along the axial direction of the blade; a profile detection component, the profile detection component is movably installed on the axial movable guide rail, and is used to detect the cross-sectional profile of the blade; and a position detection component, the position detection component is used to measure the position of the profile detection component on the axial movable guide rail.

[0006] Furthermore, the profile detection assembly includes a first slide seat sliding along the axial movable guide rail, a second slide seat is provided on the first slide seat for sliding in a direction perpendicular to the axial movable guide rail, and a blade profile distance measuring sensor is provided on the second slide seat.

[0007] Furthermore, the first slide seat includes a Y-direction movable base plate, and a Y-direction guide rail slider connected to the bottom of the Y-direction movable base plate, and the Y-direction guide rail slider is slidably mounted on the axial movable guide rail.

[0008] Furthermore, the first slide seat also includes an X-direction moving guide rail connected to the top of the Y-direction moving base plate.

[0009] Furthermore, the second slide seat includes an X-direction movable base plate, and an X-direction guide rail slider connected to the bottom of the X-direction movable base plate, and the X-direction guide rail slider is slidably mounted on the X-direction movable guide rail.

[0010] Furthermore, the profile detection assembly also includes a linear drive assembly for controlling the sliding of the second slide.

[0011] Furthermore, the linear drive assembly includes a motor fixedly connected to the Y-moving base plate, and a lead screw connected to the motor shaft. A lead screw nut is provided at the bottom of the X-moving base plate, and the lead screw nut is rotatably sleeved on the lead screw.

[0012] Furthermore, the top of the X-axis movable base plate is connected to the sensor substrate through a plurality of leveling screws, and the blade-shaped distance measuring sensor is mounted on the sensor substrate.

[0013] Furthermore, the position detection component includes a blade Y-axis position ranging sensor, which is fixed on the blade fixed support, and the profile detection component is provided with a ranging positioning circle for calibrating and measuring the Y-axis position ranging sensor.

[0014] Furthermore, a standard measuring cylinder is also included.

[0015] The technical solution of the present invention can adapt to propeller blades of different models or lengths by changing the fixing interface of the blade fixing support, and the profile detection component is moved to different positions of the blade by axially moving the guide rail, so that the profile data detection of the cross-section at that position can be performed. The measurement accuracy of the propeller blade profile is greatly increased compared to the traditional pallet, and the operation is convenient, the structure is simple and reliable, the degree of modularization is high, and the failure rate is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of a profile detection assembly of the present invention;

[0019] Figure 3 is a schematic diagram of a second slide seat of the present invention;

[0020] Figure 4 It is a schematic diagram of the Y-direction movable bottom plate of the present invention;

[0021] Figure 5 It is a schematic diagram of a linear drive assembly of the present invention;

[0022] Figure 6 It is a schematic diagram of the initial position of the blade surface detection process at a certain position of the present invention;

[0023] Figure 7 It is a schematic diagram of the middle position of the blade profile detection process at a certain position of the present invention;

[0024] Figure 8 It is a schematic diagram of the end position of the blade profile detection process at a certain position of the present invention;

[0025] Description of reference numerals:

[0026] 10-blade sample; 20-blade fixing support; 30-position detection component; 40-axial moving guide rail;

[0027] 50-surface detection component; 501-blade profile distance sensor; 502-sensor substrate; 503-leveling screw; 504-X-moving base plate; 5041-screw nut; 505-X-moving guide rail; 506-Y-moving base plate; 5061-distance measurement positioning circle; 507-Y-guide rail slider; 508-motor; 5081-screw fixing seat; 5082-screw. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Example 1

[0032] like Figure 1-Figure 8 As shown, the present invention provides an automatic detection device for the profile of a propeller blade, comprising: a blade fixing support 20, the blade fixing support 20 is used to fix the mounting portion (hub structure) of the blade; an axial movable guide rail 40, the axial movable guide rail 40 is arranged on one side of the blade fixing support 20, and the length direction is arranged along the axial direction of the blade; a profile detection component 50, the profile detection component 50 is movably installed on the axial movable guide rail 40, and is used to detect the cross-sectional profile of the blade; and a position detection component 30, the position detection component 30 is used to measure the position of the profile detection component 50 on the axial movable guide rail 40.

[0033] Specifically, the blade / blade sample 10 is used to further demonstrate and explain the invention; the blade fixing support 20 is the bearing base of the device, which is mainly used for the installation and fixation of the blade, and the fixation of the axial movable guide rail 40; the position detection assembly 30 is installed under the blade fixing support 20, and is mainly used to detect the relative position of the blade profile detection assembly 50 relative to the blade fixing support 20; the axial movable guide rail 40 is a high-precision guide rail, which is fixed to the blade fixing support 20, and is used to carry the blade profile detection assembly 50 to move left and right along the Y-axis direction of the illustrated coordinate system.

[0034] The device adopts modular design, with simple and reliable structure, high standardization of platform parts, and can use mature shelf parts. Different types of propeller blades can be measured by the device, which has wide applicability.

[0035] Example 2

[0036] The profile detection assembly 50 includes a first slide that slides along the axial movable guide rail 40, a second slide that slides perpendicularly to the direction of the axial movable guide rail 40, and a blade profile distance sensor 501 is provided on the second slide. The first slide includes a Y-direction movable base plate 506, and a Y-direction guide slider 507 connected to the bottom of the Y-direction movable base plate 506, and the Y-direction guide slider 507 is slidably mounted on the axial movable guide rail 40. The first slide also includes an X-direction movable guide rail 505 connected to the top of the Y-direction movable base plate 506. The second slide includes an X-direction movable base plate 504, and an X-direction guide slider connected to the bottom of the X-direction movable base plate 504, and the X-direction guide slider is slidably mounted on the X-direction movable guide rail 505. The profile detection assembly 50 also includes a linear drive assembly that controls the sliding of the second slide. The linear drive assembly includes a motor 508 fixedly connected to the Y-moving base plate 506, and a lead screw 5082 connected to the rotating shaft of the motor 508. A lead screw nut 5041 is provided at the bottom of the X-moving base plate 504, and the lead screw nut 5041 is rotatably sleeved on the lead screw 5082. The top of the X-moving base plate 504 is connected to the sensor substrate 502 through a plurality of leveling lead screws 503, and the blade-shaped distance sensor 501 is installed on the sensor substrate 502.

[0037] Specifically, the profile detection component 50 cooperates with two groups of adjustment components, namely the first slide and the second slide, to achieve position adjustment of the blade profile distance measurement sensor 501, thereby increasing the degree of freedom of the device and improving assembly efficiency.

[0038] Blade profile detection assembly 50 (such as Figure 2 ), including a blade profile distance sensor 501 for detecting the blade profile in the X direction, a sensor substrate 502 for fixing the blade profile distance sensor 501, and a leveling screw 503 for leveling the blade profile distance sensor 501 substrate; an X-guide rail slider and a T-type lead screw nut 5041 ( Figure 4As shown in the figure, a blade profile distance measuring sensor 501 and other components are fixed on the top of the bottom plate, and the X-direction movable bottom plate 504 can realize the translation of the blade profile distance measuring sensor 501 along the X direction; a Y-direction guide rail slider 507 is fixed below the Y-direction movable bottom plate 506, and the bottom plate can realize left and right translation on the axial movable guide rail 40 along the Y direction of the illustrated coordinate system; a motor 508 driven in the X direction is fixed to the side of the Y-direction movable bottom plate 506, and a lead screw 5082 is installed on the output shaft of the motor 508, and both ends of the lead screw 5082 are fixed by a lead screw fixing seat 5081, and a T-type lead screw 5082 passes through a T-type lead screw nut 5041, and the motor 508 rotates at a set speed to drive the T-type lead screw 5082 to rotate, acting on the T-type lead screw nut 5041, thereby realizing the left and right translation of the X-direction movable bottom plate 504 along the X direction of the illustrated coordinate system, and when the motor 508 rotates at a uniform speed, uniform measurement of the blade profile can be achieved. The various mechanisms cooperate with each other to achieve the purpose of measuring the propeller blade profile.

[0039] Example 3

[0040] The position detection assembly 30 includes a blade Y-axis position distance measuring sensor, which is fixed on the blade fixing support 20. The profile detection assembly 50 is provided with a distance measuring positioning circle 5061 for calibrating and measuring the Y-axis position distance measuring sensor.

[0041] Specifically, the blade Y-direction position distance sensor is a laser distance sensor. The laser distance sensor and the guide rail are both high-precision shelf products to ensure the measurement accuracy of the device. The measurement frequency of the laser distance sensor and the speed of the motor 508 cooperate with each other to obtain the best measurement result. The side of the bottom plate is provided with a distance positioning circle 5061, which is used for calibration and measurement of the blade +Y direction position distance sensor.

[0042] Example 4

[0043] Also included are standard measuring cylinders.

[0044] Specifically, the standard measuring cylinder is used to detect the precision and measurement accuracy of the device; in addition, by measuring multiple cross sections of the blade, the torsion angle of the blade can also be measured, and this function will not be described in detail here.

[0045] How to use this device:

[0046] (1) Selection and positioning of a section at a certain position of the blade: First, determine the section of the blade to be inspected, for example, inspect the blade profile at a position 200 mm from the blade tip. At this time, move the blade profile inspection component 50 along the axial moving guide rail 40 until the position inspection component 30 displays a value of 200 and stops moving.

[0047] (2) Measurement of the cross-sectional profile of a blade at a certain position: The second is the measurement of the cross-sectional profile of a blade at a certain position (such as Figure 6 ,7 , 8), adjust the X-direction drive motor 508 to the initial position, start the measurement, the motor 508 rotates at a constant speed, and the blade profile ranging sensor 501 collects distances until the entire blade profile is measured. Finally, the test results are sorted out and compared with the standard spline curve to give the test results. In addition, the required spline curve can be obtained by controlling the rotation speed of the motor 508.

[0048] Therefore, the device measures the profile curves of different cross-sections of the propeller blades and compares them with the standard cross-section spline curves to screen qualified blades, thereby improving the profile consistency of the propeller blades.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A propeller blade profile automatic detection device, characterized in that: include: A blade fixing support, the blade fixing support is used to fix the mounting portion of the blade; An axial movable guide rail, which is arranged on one side of the blade fixing support and has a length direction along the axial direction of the blade; A profile detection component, the profile detection component is movably mounted on the axial movable guide rail and is used to detect the cross-sectional profile of the blade; A position detection component is used to determine the position of the profile detection component on the axial movable guide rail.

2. The propeller blade profile automatic detection device according to claim 1, characterized in that: The profile detection assembly comprises a first slide seat sliding along the axial movable guide rail, a second slide seat is provided on the first slide seat for sliding in a direction perpendicular to the axial movable guide rail, and a blade profile distance measuring sensor is provided on the second slide seat.

3. The propeller blade profile automatic detection device according to claim 2, characterized in that: The first slide seat comprises a Y-direction movable base plate, and a Y-direction guide rail slider connected to the bottom of the Y-direction movable base plate, and the Y-direction guide rail slider is slidably mounted on the axial movable guide rail.

4. The propeller blade profile automatic detection device according to claim 3, characterized in that: The first slide seat also includes an X-direction moving guide rail connected to the top of the Y-direction moving base plate.

5. The propeller blade profile automatic detection device according to claim 4, characterized in that: The second slide seat includes an X-direction movable base plate and an X-direction guide rail slider connected to the bottom of the X-direction movable base plate, and the X-direction guide rail slider is slidably mounted on the X-direction movable guide rail.

6. The propeller blade profile automatic detection device according to claim 5, characterized in that: The profile detection assembly also includes a linear drive assembly for controlling the sliding of the second slide.

7. The propeller blade profile automatic detection device according to claim 6, characterized in that: The linear drive assembly includes a motor fixedly connected to the Y-moving base plate, and a lead screw connected to the motor shaft. A lead screw nut is provided at the bottom of the X-moving base plate, and the lead screw nut is rotatably sleeved on the lead screw.

8. The propeller blade profile automatic detection device according to claim 5, characterized in that: The top of the X-axis movable bottom plate is connected to the sensor substrate through a plurality of leveling screw rods, and the blade-shaped distance measuring sensor is mounted on the sensor substrate.

9. The automatic detection device for propeller blade profile according to claim 1, characterized in that: The position detection assembly includes a blade Y-axis position ranging sensor, which is fixed on the blade fixed support. The profile detection assembly is provided with a ranging positioning circle for calibrating and measuring the Y-axis position ranging sensor.

10. The propeller blade profile automatic detection device according to claim 1, characterized in that: Also included are standard measuring cylinders.

Images