A device and method for detecting air film holes on blades

Abstract

The present application belongs to the technical field of detecting air film holes on blades, and specifically relates to a device for detecting air film holes on blades, including: a base; a workbench connected to the base and capable of sliding on the base along a first direction; a bracket connected to the base; a slider connected to the bracket and capable of sliding on the bracket along a second direction; a telescopic arm connected to the slider and capable of telescoping along a third direction; a zoom optical sensor connected to the telescopic arm; an optical fiber sensor connected to the telescopic arm; a probe sensor connected to the telescopic arm; a clamp having a clamping groove thereon; the clamping groove is used to clamp the tenon at the root of the blade; two clamping rods are arranged in the clamping groove and partially extend out of the clamping groove; each clamping rod is correspondingly clamped in a tenon groove of the tenon at the root of the blade; a dual-axis turntable connected to the workbench and connected to the clamp so as to drive the clamp to rotate. In addition, it relates to a method for detecting air film holes on blades, which is implemented based on the above-mentioned device for detecting air film holes on blades.

Description

Technical Field

[0001] The present application belongs to the technical field of air film hole detection on blades, and specifically relates to an air film hole detection device and method on a blade. Background Art

[0002] Air film holes are opened on the turbine blades of aircraft engines to draw out cooling air and form an air film on the surface of the blades, thereby ensuring the working life of the blades in high temperature environments.

[0003] The important parameters of the air film holes on the blades include diameter, cylindricity, position and inclination, which are also the key parameters for detecting the air film holes on the blades. Accurate measurement of the diameter, cylindricity, position and inclination of the air film holes on the blades can provide reliable support for the processing of the air film holes on the blades.

[0004] Currently, the diameter, cylindricity and position of the air film holes on the blades are measured mainly by plug gauge detection, blade standard sample detection and industrial CT detection. When there are a large number of air film holes on the blades and their axis angles are different, the above detection methods are inefficient and the accuracy is difficult to guarantee.

[0005] This application is proposed in view of the above-mentioned technical defects.

[0006] It should be noted that the disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0007] The purpose of the present application is to provide a device and method for detecting air film holes on a blade, so as to overcome or alleviate at least one aspect of the known technical defects.

[0008] The technical solution of this application is:

[0009] On the one hand, a device for detecting air film holes on a blade is provided, comprising:

[0010] Base;

[0011] A workbench connected to the base and capable of sliding on the base along a first direction;

[0012] A bracket, connected to the base;

[0013] A slider, connected to the bracket, capable of sliding on the bracket along a second direction;

[0014] A telescopic arm connected to the slider and capable of extending and retracting along a third direction;

[0015] A zoom optical sensor, attached to the telescopic arm;

[0016] A fiber optic sensor, attached to the telescopic arm;

[0017] a probe sensor, connected to the telescopic arm;

[0018] A clamp having a clamping groove thereon; the clamping groove is used to clamp the tenon at the root of the blade;

[0019] Two clamping rods are arranged in the clamping groove and partially extend out of the clamping groove; each clamping rod is correspondingly clamped in a tenon groove of the tenon at the root of the blade;

[0020] The double-axis turntable is connected to the workbench and connected to the fixture so as to be able to drive the fixture to rotate.

[0021] According to at least one embodiment of the present application, in the above-mentioned air film hole detection device on the blade, there are two telescopic arms, wherein one telescopic arm is connected to a zoom optical sensor and a fiber optic sensor; and the other telescopic arm is connected to a probe sensor.

[0022] According to at least one embodiment of the present application, in the above-mentioned device for detecting air film holes on a blade, the first direction, the second direction, and the third direction are perpendicular to each other.

[0023] According to at least one embodiment of the present application, in the above-mentioned device for detecting air film holes on a blade, a bottom of the clamping groove has a clamping gap.

[0024] According to at least one embodiment of the present application, in the above-mentioned device for detecting air film holes on a blade, the bottom cross-section of the gap is in an arc shape.

[0025] According to at least one embodiment of the present application, the above-mentioned air film hole detection device on the blade further includes:

[0026] The fastening pin is screwed on the clamp, which can tighten the two sides of the clamping groove, thereby clamping the tenon at the root of the blade.

[0027] According to at least one embodiment of the present application, in the above-mentioned device for detecting air film holes on a blade, the dual-axis turntable can drive the fixture to rotate around a first direction and a second direction.

[0028] According to at least one embodiment of the present application, the above-mentioned air film hole detection device on the blade further includes:

[0029] A display controller connected to the driving mechanism of the workbench, the slider, and the telescopic arm, so as to control the workbench to slide in the first direction, control the slider to slide in the second direction, and control the telescopic arm to extend and retract in the third direction;

[0030] The display controller is connected to the zoom optical sensor, the optical fiber sensor, and the probe sensor so as to collect and display the collected data of the zoom optical sensor, the optical fiber sensor, and the probe sensor;

[0031] The display controller is connected to the dual-axis turntable so as to be able to control the dual-axis turntable to drive the fixture to rotate.

[0032] On the other hand, a method for detecting air film holes on a blade is provided, which is implemented based on the above-mentioned air film hole detection device on a blade, and comprises:

[0033] The position of the zoom optical sensor is adjusted by sliding the workbench, sliding the slider and / or extending the telescopic arm, and two points on one end surface of the tenon at the root of the blade are collected by the zoom optical sensor, and the line where the two points are located is used as the reference line;

[0034] The fixture is driven to rotate by a dual-axis turntable, thereby driving the blade to rotate so that the reference line is parallel to the plane determined by the first direction and the second direction;

[0035] The position of the probe sensor is adjusted by sliding the workbench, sliding the slider and / or extending the telescopic arm, and three points on one end surface of the tenon at the root of the blade are collected by the probe sensor, and the plane where the three points are located is taken as the reference plane;

[0036] The reference plane is translated toward the other end surface of the blade root tenon by a set distance to obtain the XOY plane, wherein the set distance is the distance between the end surface of the blade root tenon corresponding to the reference plane and the blade design reference point;

[0037] The position of the probe sensor is adjusted by sliding the workbench, sliding the slider and / or extending the telescopic arm, and the probe sensor is used to collect three points on at least one cross section of each clamping rod, thereby fitting and obtaining the axes of the two clamping rods;

[0038] The plane where the axes of the two clamp rods are located is taken as the YOZ plane, and the symmetry line of the axes of the two clamp rods is taken as the Z axis, combined with the XOY plane, to construct the blade coordinate system;

[0039] Import the three-dimensional model of the blade into the blade coordinate system to obtain the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade in the blade coordinate system;

[0040] The fixture is driven to rotate by a dual-axis turntable, thereby driving the blade to rotate, so that the theoretical axis of the air film hole to be detected on the blade three-dimensional model in the blade coordinate system is parallel to the Z axis;

[0041] Observe with a zoom optical sensor, adjust the position of the optical fiber sensor by sliding the workbench, sliding the slider and / or extending the telescopic arm, so that the optical fiber sensor extends into the air film hole to be detected, contacts with multiple points on multiple cross sections of the air film hole to be detected, collects data with the zoom optical sensor, and then fits to obtain the coordinates of the air film hole to be detected in the blade coordinate system;

[0042] Based on the coordinates of the air film holes to be detected in the blade coordinate system, key parameters of the air film holes to be detected are calculated.

[0043] According to at least one embodiment of the present application, in the above-mentioned method for detecting film holes on a blade, key parameters of the film holes to be detected include the diameter, cylindricity, position, and inclination of the film holes to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a schematic diagram of a device for detecting air film holes on a blade provided in an embodiment of the present application;

[0045] Figure 2 It is a partial schematic diagram of a device for detecting air film holes on a blade provided in an embodiment of the present application;

[0046] Figure 3 It is a schematic diagram of measuring the air film holes on the blade by the zoom optical sensor and the optical fiber sensor provided in the embodiment of the present application;

[0047] in:

[0048] 1-base; 2-workbench; 3-bracket; 4-slider; 5-telescopic arm; 6-zoom optical sensor; 7-optical fiber sensor; 8-probe sensor; 9-clamp; 10-blade; 11-clamping rod; 12-dual-axis turntable; 13-fastening pin.

[0049] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. DETAILED DESCRIPTION

[0050] In order to make the technical solution and advantages of the present application clearer, the technical solution of the present application will be further described in detail in detail and in detail in conjunction with the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the present application, which are only used to explain the present application, not to limit the present application. It should be noted that, for the convenience of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0051] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application shall be the common meanings understood by the general technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating orientation used in the description of this application are only used to indicate the relative direction or positional relationship, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, so it cannot be understood as a limitation on this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance. The similar words "one", "one" or "the" used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the existence of at least one. The similar words "including" or "comprising" used in the description of this application mean that the elements or objects appearing in front of the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0052] In addition, it should be noted that, unless otherwise clearly specified and limited, the words "installed", "connected", "connected" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection 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, an indirect connection through an intermediate medium, or the internal connection of two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0053] The following is combined with Figures 1 to 3 This application is described in further detail.

[0054] On the one hand, a device for detecting air film holes on a blade is provided, comprising:

[0055] Base 1;

[0056] A workbench 2 is connected to the base 1 and can slide on the base 1 along a first direction;

[0057] A bracket 3 connected to the base 1;

[0058] The slider 4 is connected to the bracket 3 and can slide on the bracket 3 along the second direction;

[0059] The telescopic arm 5 is connected to the slider 4 and can be telescopic along the third direction;

[0060] A zoom optical sensor 6 connected to the telescopic arm 5;

[0061] The optical fiber sensor 7 is connected to the telescopic arm 5;

[0062] A probe sensor 8 is connected to the telescopic arm 5;

[0063] The clamp 9 has a clamping groove thereon; the clamping groove is used to clamp the tenon at the root of the blade 10;

[0064] Two clamping rods 11 are arranged in the clamping groove and partially extend out of the clamping groove; each clamping rod 11 is correspondingly clamped in a tenon groove of the tenon at the root of the blade 10;

[0065] The double-axis turntable 12 is connected to the workbench 2 and connected to the fixture 9 so as to be able to drive the fixture 9 to rotate.

[0066] The air film hole detection device on the blade disclosed in the above embodiment can be used to detect the air film holes on the blade, and the specific implementation can be as follows:

[0067] The position of the zoom optical sensor 6 is adjusted by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, and the zoom optical sensor 6 collects two points on one end surface of the tenon at the root of the blade 10, and the line where the two points are located is used as the reference line;

[0068] The fixture 9 is driven to rotate by the dual-axis turntable 12, thereby driving the blade 10 to rotate, so that the reference line is parallel to the plane determined by the first direction and the second direction. In practice, the reference line is parallel to the workbench 2 and is in a horizontal state. At this time, the end surface of the root tenon of the blade 10 corresponding to the reference line is horizontal and parallel to the workbench 2;

[0069] The position of the probe sensor 8 is adjusted by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, and the probe sensor 8 collects three points on one end surface of the tenon at the root of the blade 10, and the plane where the three points are located is taken as the reference plane;

[0070] The reference plane is translated toward the other end face of the root tenon of the blade 10 by a set distance to obtain the XOY plane, wherein the set distance is the distance between the end face of the root tenon of the blade 10 corresponding to the reference plane and the design reference point of the blade 10;

[0071] By sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, the position of the probe sensor 8 is adjusted, and the probe sensor 8 collects three points on one cross section of each clamping rod 11, or three points on multiple cross sections of each clamping rod 11, and then the axes of the two clamping rods 11 are obtained by fitting;

[0072] The plane where the axes of the two clamping rods 11 are located is taken as the YOZ plane, and the symmetry line of the axes of the two clamping rods 11 is taken as the Z axis, combined with the XOY plane, to construct a blade coordinate system;

[0073] The three-dimensional model of the blade 10 is imported into the blade coordinate system, and the three-dimensional model of the blade 10 is fitted into the blade coordinate system. The design reference point in the three-dimensional model of the blade 10 is at the zero point of the blade coordinate system, and the coordinates of each point on it are located at the corresponding position in the blade coordinate system, thereby obtaining the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade 10 in the blade coordinate system;

[0074] The fixture 9 is driven to rotate by the dual-axis turntable 12, thereby driving the blade 10 to rotate, so that the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade 10 in the blade coordinate system is parallel to the Z axis, that is, the theoretical axis of the air film hole to be detected in the three-dimensional model of the blade 10 in the blade coordinate system is parallel to the third direction;

[0075] Observe with the zoom optical sensor 6, adjust the position of the optical fiber sensor 7 by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, so that the optical fiber sensor 7 extends into the air film hole to be detected, and contacts with multiple points on multiple cross sections of the air film hole to be detected, specifically, it can contact with 8 points on each cross section of the air film hole to be detected, collect with the zoom optical sensor 6, and then fit to obtain the coordinates of the air film hole to be detected in the blade coordinate system;

[0076] Based on the coordinates of the air film holes to be detected in the blade coordinate system, key parameters of the air film holes to be detected are calculated.

[0077] The size of the air film hole on the blade 10 is extremely small, and it is difficult to accurately obtain its coordinates by ordinary means. By using the air film hole detection device on the blade disclosed in the above embodiment, a blade coordinate system can be constructed, and the three-dimensional model of the blade 10 is imported into the blade coordinate system to obtain the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade 10 in the blade coordinate system. By driving the dual-axis turntable 12, the theoretical axis of the air film hole to be detected in the three-dimensional model of the blade 10 in the blade coordinate system is made parallel to the third direction. At this time, the axis of the air film hole to be detected on the blade 10 will also be roughly parallel to the third direction. In the direction, under the observation of the zoom optical sensor 6, the zoom optical sensor 6 and the optical fiber sensor 7 can be conveniently aligned with the air film hole to be detected on the blade 10 by sliding the workbench 2 and the sliding block 4, and then the optical fiber head of the tiny optical fiber sensor 7 can be easily extended into the air film hole to be detected by extending and retracting the telescopic arm 5, and under the observation of the zoom optical sensor 6, the optical fiber of the optical fiber sensor 7 is adjusted to contact the inner wall of the air film hole to be detected, and the light source part of the optical fiber sensor 7 can be transmitted to the optical fiber head through the optical fiber rod and collected by the zoom optical sensor 6, such as Figure 3 As shown, based on this, multiple points on multiple cross sections of the air film holes to be detected can be accurately collected, and then the coordinates of the air film holes to be detected in the blade coordinate system can be fitted, and the key parameters of the air film holes to be detected can be accurately calculated.

[0078] In some optional embodiments, in the above-mentioned blade film hole detection device, there are two telescopic arms 5, wherein one telescopic arm 5 is connected to the zoom optical sensor 6 and the optical fiber sensor 7; and the other telescopic arm 5 is connected to the probe sensor 8.

[0079] In some optional embodiments, in the above-mentioned device for detecting air film holes on a blade, the first direction, the second direction, and the third direction are perpendicular to each other.

[0080] In some optional embodiments, in the above-mentioned blade film hole detection device, the bottom of the clamping groove has a clamping gap so that the side walls of the clamping groove have a greater deformation capacity and can easily clamp the tenons at the roots of blades 10 of various sizes and models.

[0081] In some optional embodiments, in the above-mentioned air film hole detection device on the blade, the bottom cross-section of the slot is arc-shaped to increase the deformation capacity between the side walls of the slot.

[0082] In some optional embodiments, the above-mentioned air film hole detection device on the blade further includes:

[0083] The fastening pin 13 is screwed on the clamp 9 to tighten the two sides of the clamping groove, thereby clamping the tenon at the root of the blade 10.

[0084] In some optional embodiments, in the above-mentioned blade film hole detection device, the dual-axis turntable 12 can drive the clamp 9 to rotate around the first direction and the second direction.

[0085] In some optional embodiments, the above-mentioned air film hole detection device on the blade further includes:

[0086] A display controller is connected to the driving mechanism of the workbench 2, the slider 4, and the telescopic arm 5, so as to control the workbench 2 to slide in the first direction, control the slider 4 to slide in the second direction, and control the telescopic arm 5 to extend and retract in the third direction;

[0087] The display controller is connected to the zoom optical sensor 6, the optical fiber sensor 7, and the probe sensor 8 so as to collect and display the collected data of the zoom optical sensor 6, the optical fiber sensor 7, and the probe sensor 8;

[0088] The display controller is connected to the dual-axis turntable 12 so as to be able to control the dual-axis turntable 12 to drive the fixture 9 to rotate.

[0089] The air film holes on the blades disclosed in the above-mentioned embodiment are used to detect the air film holes on the blades. The display controller can control the working table 2 and the slider 4 to slide, control the extension and retraction of the telescopic arm 5, control the dual-axis turntable 12 to drive the clamp 9 to rotate, and collect and display the collected data of the zoom optical sensor 6, the optical fiber sensor 7, and the probe sensor 8, and assist in the processing of the collected data.

[0090] On the other hand, a method for detecting air film holes on a blade is provided, which is implemented based on the above-mentioned air film hole detection device on a blade, and comprises:

[0091] The position of the zoom optical sensor 6 is adjusted by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, and the zoom optical sensor 6 collects two points on one end surface of the tenon at the root of the blade 10, and the line where the two points are located is used as the reference line;

[0092] The fixture 9 is driven to rotate by the dual-axis turntable 12, thereby driving the blade 10 to rotate, so that the reference line is parallel to the plane determined by the first direction and the second direction;

[0093] The position of the probe sensor 8 is adjusted by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, and the probe sensor 8 collects three points on one end surface of the tenon at the root of the blade 10, and the plane where the three points are located is taken as the reference plane;

[0094] The reference plane is translated toward the other end face of the root tenon of the blade 10 by a set distance to obtain the XOY plane, wherein the set distance is the distance between the end face of the root tenon of the blade 10 corresponding to the reference plane and the design reference point of the blade 10;

[0095] By sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, the position of the probe sensor 8 is adjusted, and the probe sensor 8 collects three points on at least one cross section of each clamping rod 11, and then the axes of the two clamping rods 11 are obtained by fitting;

[0096] The plane where the axes of the two clamping rods 11 are located is taken as the YOZ plane, and the symmetry line of the axes of the two clamping rods 11 is taken as the Z axis, combined with the XOY plane, to construct a blade coordinate system;

[0097] Import the three-dimensional model of the blade 10 into the blade coordinate system to obtain the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade 10 in the blade coordinate system;

[0098] The fixture 9 is driven to rotate by the dual-axis turntable 12, thereby driving the blade 10 to rotate, so that the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade 10 in the blade coordinate system is parallel to the Z axis;

[0099] Observe with the zoom optical sensor 6, adjust the position of the optical fiber sensor 7 by sliding the workbench 2, sliding the slider 4 and / or extending and retracting the telescopic arm 5, so that the optical fiber sensor 7 extends into the air film hole to be detected, contacts with multiple points on multiple cross sections of the air film hole to be detected, collects with the zoom optical sensor 6, and then fits to obtain the coordinates of the air film hole to be detected in the blade coordinate system;

[0100] Based on the coordinates of the air film holes to be detected in the blade coordinate system, key parameters of the air film holes to be detected are calculated;

[0101] By following the above steps, each air film hole on the blade 10 is traversed, and the detection of each air film hole on the blade 10 is completed.

[0102] In some optional embodiments, in the above-mentioned method for detecting film holes on a blade, key parameters of the film holes to be detected include the diameter, cylindricity, position and inclination of the film holes to be detected.

[0103] The method for detecting air film holes on blades disclosed in the above-mentioned embodiment is implemented based on the device for detecting air film holes on blades disclosed in the above-mentioned embodiment, and the description is relatively simple. For specific related matters, please refer to the relevant description of the part of the device for detecting air film holes on blades. Its technical effects can also refer to the technical effects of the relevant parts of the device for detecting air film holes on blades, and will not be repeated here.

[0104] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0105] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A device for detecting air film holes on a blade, characterized in that: include: Base (1); A workbench (2) connected to the base (1) and capable of sliding on the base (1) along a first direction; A bracket (3) connected to the base (1); A slider (4) connected to the bracket (3) and capable of sliding on the bracket (3) along a second direction; A telescopic arm (5) connected to the slider (4) and capable of telescoping along a third direction; A zoom optical sensor (6) connected to the telescopic arm (5); An optical fiber sensor (7) connected to the telescopic arm (5); A probe sensor (8) connected to the telescopic arm (5); A clamp (9) having a clamping groove thereon; the clamping groove is used to clamp the tenon at the root of the blade (10); Two clamping rods (11) are arranged in the clamping groove and partially extend out of the clamping groove; each clamping rod (11) is correspondingly clamped in a tenon groove of the tenon at the root of the blade (10); A double-axis turntable (12) connected to the workbench (2) and connected to the fixture (9) so as to be able to drive the fixture (9) to rotate; There are two telescopic arms (5), wherein one of the telescopic arms (5) is connected to the zoom optical sensor (6) and the optical fiber sensor (7); and the other telescopic arm (5) is connected to the probe sensor (8); The first direction, the second direction and the third direction are perpendicular to each other.

2. The device for detecting air film holes on blades according to claim 1, characterized in that: The bottom of the clamping groove is provided with a clamping gap.

3. The device for detecting air film holes on blades according to claim 2, characterized in that: The bottom cross section of the clamping gap is in an arc shape.

4. The device for detecting air film holes on blades according to claim 3, characterized in that: Also includes: A fastening pin (13) is screwed onto the clamp (9) and can tighten both sides of the clamping groove, thereby clamping the tenon at the root of the blade (10).

5. The device for detecting air film holes on blades according to claim 4, characterized in that: The dual-axis turntable (12) is capable of driving the clamp (9) to rotate around the first direction and the second direction.

6. The device for detecting air film holes on blades according to claim 5, characterized in that: Also includes: a display controller connected to the driving mechanism of the workbench (2), the slider (4), and the telescopic arm (5), so as to control the workbench (2) to slide along the first direction, control the slider (4) to slide along the second direction, and control the telescopic arm (5) to extend and retract along the third direction; The display controller is connected to the zoom optical sensor (6), the optical fiber sensor (7), and the probe sensor (8) so as to be able to collect and display the collected data of the zoom optical sensor (6), the optical fiber sensor (7), and the probe sensor (8); The display controller is connected to the dual-axis turntable (12) so as to be able to control the dual-axis turntable (12) to drive the clamp (9) to rotate.

7. A method for detecting air film holes on a blade, characterized in that: The device for detecting air film holes on a blade according to claim 6 is implemented as follows: The position of the zoom optical sensor (6) is adjusted by sliding the workbench (2), sliding the slider (4) and / or extending and retracting the telescopic arm (5), and two points on an end surface of the tenon at the root of the blade (10) are collected by the zoom optical sensor (6), and the line where the two points are located is used as a reference line; A dual-axis turntable (12) is used to drive the fixture (9) to rotate, thereby driving the blade (10) to rotate, so that the reference line is parallel to the plane determined by the first direction and the second direction; The position of the probe sensor (8) is adjusted by sliding the workbench (2), sliding the slider (4) and / or extending and retracting the telescopic arm (5), and three points on an end surface of the tenon at the root of the blade (10) are collected by the probe sensor (8), and the plane where the three points are located is used as a reference plane; The reference plane is translated by a set distance in the direction of the other end face of the root tenon of the blade (10) to obtain an XOY plane, wherein the set distance is the distance between the end face of the root tenon of the blade (10) corresponding to the reference plane and the design reference point of the blade (10); The position of the probe sensor (8) is adjusted by sliding the workbench (2), sliding the slider (4) and / or extending and retracting the telescopic arm (5), so that the probe sensor (8) collects three points on at least one cross section of each clamping rod (11), thereby fitting and obtaining the axes of the two clamping rods (11); The plane where the axes of the two clamping rods (11) are located is taken as the YOZ plane, and the symmetry line of the axes of the two clamping rods (11) is taken as the Z axis, and combined with the XOY plane, a blade coordinate system is constructed; Importing the three-dimensional model of the blade (10) into the blade coordinate system, and obtaining the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade (10) in the blade coordinate system; The fixture (9) is driven to rotate by a dual-axis turntable (12), thereby driving the blade (10) to rotate, so that the theoretical axis of the air film hole to be detected on the three-dimensional model of the blade (10) in the blade coordinate system is parallel to the Z axis; Observation is performed using a zoom optical sensor (6), and the position of the optical fiber sensor (7) is adjusted by sliding the workbench (2), sliding the slider (4) and / or extending and retracting the telescopic arm (5), so that the optical fiber sensor (7) extends into the air film hole to be detected and contacts multiple points on multiple cross sections of the air film hole to be detected, and data is collected using the zoom optical sensor (6), thereby fitting and obtaining the coordinates of the air film hole to be detected in the blade coordinate system; Based on the coordinates of the air film holes to be detected in the blade coordinate system, key parameters of the air film holes to be detected are calculated.

8. The method for detecting air film holes on a blade according to claim 7, characterized in that: The key parameters of the air film hole to be detected include the diameter, cylindricity, position and inclination of the air film hole to be detected.

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