CN113405465A - Engine blade tenon root width measuring device and measuring method - Google Patents
Engine blade tenon root width measuring device and measuring method Download PDFInfo
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- CN113405465A CN113405465A CN202110669696.7A CN202110669696A CN113405465A CN 113405465 A CN113405465 A CN 113405465A CN 202110669696 A CN202110669696 A CN 202110669696A CN 113405465 A CN113405465 A CN 113405465A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 39
- 239000004579 marble Substances 0.000 claims description 10
- 230000002452 interceptive effect Effects 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000009466 transformation Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/003—Measuring of motor parts
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Abstract
The invention provides a device and a method for measuring the width of a tenon root of an engine blade. According to the invention, high-precision measurement data of the width of the blade tenon root of the engine can be obtained at one time through the two non-contact sensors, the blade is not contacted under the condition of not replacing a clamp and a measuring head, a large amount of outline dimension data can be obtained at the same time, the width of the blade tenon root can be effectively measured in a nondestructive, precise and efficient manner, and the measurement efficiency is high compared with that of a three-coordinate measuring machine.
Description
Technical Field
The invention belongs to the technical field of high-precision complex part measurement, and relates to a device and a corresponding method for measuring the width of a tenon root of an engine blade.
Background
The blade is a key component of the aircraft engine, and the processing and manufacturing quality of the blade seriously influences the overall quality of the whole aircraft engine. With the stricter requirements on the aero-engine, the precision of the blade tenon root is continuously improved. The geometric accuracy and consistency of the assembly of the blade disc and the tenon root have a crucial influence on the dynamic performance of the engine.
The standard sample plate comparison method is to correspondingly design a standard sample plate according to the size of a machined part, and compare the blade tenon root through the standard sample plate so as to determine whether the blade tenon root is qualified. A conventional three-coordinate measuring machine adopts a contact probe to perform trigger measurement, measures a special point position of a blade tenon root through the three-coordinate measuring machine, and processes and analyzes data obtained through measurement so as to obtain a size parameter of the blade tenon root. In actual measurement, the processed standard template has a deviation, so that the accuracy of a detection result by adopting a standard template method is low, and meanwhile, when a standard template part is used, the precision of the part can be influenced due to abrasion, dust and the like, so that the detection result has a larger deviation; when the three-coordinate measuring method is used for measurement, the number of points acquired in each measurement is limited, so that the tenon root position of one blade cannot be detected and evaluated in all directions, and detection omission is caused. The measurement result can not reflect the real situation well, and meanwhile, the three-coordinate measurement has the defects of low measurement efficiency, complicated measurement steps and the like.
Disclosure of Invention
The invention aims to design a measuring device aiming at engine blade tenon root width measurement based on double non-contact sensors and a corresponding measuring method thereof, which can obtain high-precision measuring data of the engine blade tenon root width at one time and realize nondestructive, precise and efficient measurement of the blade tenon root width.
The invention provides a device and a method for measuring the width of a tenon root of an engine blade.
The technical scheme provided by the invention is as follows:
firstly, a device and a method for measuring the width of the engine blade tenon root are provided, wherein the measuring device is provided with two non-contact sensors, and high-precision measuring data of the engine blade tenon root can be obtained at one time. The measuring device comprises a cabinet type measuring device (1), a console interactive interface (2), a marble base platform (3), a sensor positioning platform (4), a clamp (5), an engine blade (6), a Z-axis screw (7), a non-contact laser sensor (8), a vertical lifting platform (9), a horizontal moving platform (10), a Y-axis screw (11), a data acquisition device (12) and a calibration ball (13).
A sensor positioning table (4) and a horizontal moving table (10) on the device are fixed on a marble base platform (3), wherein two non-contact laser sensors (8) are fixed on the two sensor positioning tables (4).
The engine blade (6) is clamped on the clamp (5), the blade can be fixed in the clamp (5) through the t-shaped handle, and in order to ensure the measurement accuracy, the central axis of the clamp (5) is coaxial with the central axis of the table top of the vertical lifting platform (9). The fixture is fixed on a vertical lifting platform (9), the vertical lifting platform is fixed on a horizontal moving platform, and the vertical lifting platform can move in the horizontal direction through a Y-axis lead screw (11), so that an engine blade can move in the Y-axis direction; the vertical lifting platform can move in the vertical direction through the Z-axis lead screw (7), so that the blade can move in the Z-axis direction. Therefore, the non-contact sensor (8) can acquire the data of the blade tenon root width. A data acquisition device (12) is arranged in a cabinet below the cabinet type measuring equipment (1) for acquiring and storing data. And the left side of the control console is hung with an interactive interface (2), so that the measurement result can be displayed in real time.
The invention also provides a method for measuring the width of the engine blade tenon root based on the device, which comprises the following steps:
step S1: equipment installation and sensor positioning
And connecting the console interactive interface (2) with a data acquisition device (12) and a non-contact sensor (8). The sensor positioning table (4) is fixed on the marble base platform (3), and the position of the sensor positioning table (4) is adjusted, so that the distance from the center of the horizontal movement platform (10) to the two sides of the sensor positioning table (4) is equal. The non-contact sensor (8) is mounted on the sensor positioning platform such that the two sensor emission beams must be coaxial. The engine blade (6) is clamped and positioned through the clamp (5), and is fixed through the t-shaped handle, and the clamp (5) is fixed with the vertical lifting platform (9) through a screw; the engine blade (6) can be controlled to move in the vertical direction and the horizontal direction by adjusting the vertical lifting platform and the horizontal moving platform, so that the data of the width (6) of the tenon root of the engine blade can be acquired. At the same time, the measurement data acquired by the non-contact sensor (8) can be displayed in the interface (2).
Step S2, calibrating the measuring device
After the equipment is installed and the position of the non-contact laser sensor (8) is fixed, the engine blade (6) is taken down, the calibration ball is placed (13) and fixed on the clamp (5), the horizontal movement platform (10) and the vertical lifting platform (9) are adjusted to the centers of the two non-contact sensors, measurement software is started, the surface data of the calibration ball (13) are measured, after measurement data are obtained, the data are spliced according to the known size of the calibration ball (13), and a point cloud data splicing coordinate transformation matrix is obtained.
Step S3: engine blade tang width measurement
After the installation and debugging of the measuring device are finished, the calibration ball (13) is taken down, the engine blade (6) is fixed on the clamp of the measuring device, the measuring system is initialized, the horizontal moving platform (10) is moved to a measuring area, the non-contact laser sensor (8) is opened, the vertical lifting platform (9) is moved to a position to be measured, and then the horizontal moving platform is moved to enable the non-contact sensor (8) to acquire the complete surface dimension data of the blade tenon root width.
Step S4: engine blade tenon root width measurement data mosaic
Combining a coordinate transformation matrix obtained by splicing standard ball point cloud data obtained in the calibration step of the measuring device, splicing the measured data of the blade tenon root width through the coordinate transformation matrix to obtain measured data of the blade tenon root width surface, and processing the data to obtain size data of the blade tenon root width.
The invention has the beneficial effects that:
1. in the measuring process, the two non-contact sensors are used for measuring, so that measuring errors caused by repeated clamping and moving of the engine blade are avoided, and measuring data of the width of the engine blade tenon root can be efficiently obtained. And the measurement can be completed only by moving two shafts, the structure is simple, and the operation is simple and convenient.
2. The device has the advantages of wide measurement range, reliable performance and high automation degree, and the laser sensor in the device can acquire the point cloud data of the width surface of the blade tenon root and can also acquire other measurement data of the blade and the like.
3. The measuring efficiency is high, and the device is at the measurement process, and contactless blade can acquire a large amount of profile dimension data simultaneously, compares in three-coordinate measuring machine and has high measuring efficiency, effectively realizes carrying out harmless, accurate, efficient measurement to blade tenon root width.
4. Multiple sensors are operated simultaneously on one PC using one hub without any additional hardware.
Drawings
FIG. 1 is a schematic view of the overall structure of the measuring device in this patent
The system comprises a cabinet type measuring device 1, a console interactive interface 2, a marble base platform 3, a sensor positioning platform 4, a clamp 5, an engine blade 6, a vertical lifting platform 7, a non-contact laser sensor 8, a Z-axis screw rod 9, a horizontal moving platform 10, a Y-axis screw rod 11 and a data acquisition device 12.
FIG. 2 is a schematic view of a partial structure of the measuring device
FIG. 3 is a diagram of a calibration sphere model
Wherein, 13, calibration ball
FIG. 4 is a schematic view of the engine blade tenon root width measurement principle
FIG. 5 is a schematic diagram of a dual non-contact sensor measurement data split
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 5.
The invention provides a blade tenon root width measuring device (shown in figures 1-3) based on a double-sensor engine, which comprises a cabinet type measuring device (1), a console interactive interface (2), a marble base platform (3), a sensor positioning platform (4), a clamp (5), an engine blade (6), a Z-axis lead screw (7), a non-contact laser sensor (8), a vertical lifting platform (9), a horizontal moving platform (10), a Y-axis lead screw (11), a data acquisition device (12) and a calibration ball (13).
Wherein the sensor positioning table (4) and the horizontal motion table (10) are fixed on the marble base platform (3), and the two non-contact laser sensors (8) are fixed on the two sensor positioning tables (4).
The engine blade (6) is clamped on the clamp (5), the blade can be fixed in the clamp (5) through the t-shaped handle, and in order to guarantee the measurement accuracy, the central axis of the clamp (5) is coaxial with the central axis of the table top of the vertical lifting platform (9). The clamp is fixed on a vertical lifting platform (9), the vertical lifting platform is fixed on a horizontal moving platform, and the vertical lifting platform can move in the horizontal direction through a Y-axis lead screw (11); the vertical lifting platform can move in the vertical direction through a Z-axis lead screw (7). Therefore, the non-contact sensor (8) can acquire the data of the blade tenon root width.
Wherein, a data acquisition device (12) is arranged in the cabinet below the cabinet type measuring equipment (1) for data acquisition and storage. And the left side of the control console is hung with an interactive interface (2), so that the measurement result can be displayed in real time.
The engine blade tenon root width measurement method comprises the following steps:
step S1: equipment installation and sensor positioning
The console interface (2) is connected to a data acquisition device (12) and a non-contact sensor (8) as shown in fig. 1. The sensor positioning table (4) is fixed on the marble base platform (3), and the position of the sensor positioning table (4) is adjusted, so that the distance from the center of the horizontal movement platform (10) to the two sides of the sensor positioning table (4) is equal. The non-contact sensor (8) is mounted on the sensor positioning platform such that the two sensor emission beams must be coaxial. The engine blade (6) is clamped and positioned through the clamp (5), and is fixed through the t-shaped handle, and the clamp (5) is fixed with the vertical lifting platform (9) through a screw; the engine blade (6) can be controlled to move in the vertical direction and the horizontal direction by adjusting the vertical lifting platform and the horizontal moving platform, so that the data of the width (6) of the tenon root of the engine blade can be acquired. At the same time, the measurement data acquired by the non-contact sensor (8) can be displayed in the interface (2).
Step S2, calibrating the measuring device
After the equipment is installed and the position of the non-contact laser sensor (8) is fixed, the engine blade (6) is taken down, a calibration ball is placed (13) (shown in figure 3) and fixed on a clamp (5), a horizontal movement platform (10) and a vertical lifting platform (7) are adjusted to the centers of the two non-contact sensors, measurement software is started, surface data of the calibration ball (13) are measured, after measurement data are obtained, the data are spliced according to the known size of the calibration ball (13), and a point cloud data splicing coordinate transformation matrix is obtained.
Step S3: engine blade dovetail measurement
After the installation and debugging of the measuring device are finished, the calibration ball (13) is taken down, the engine blade (6) is fixed on the clamp through the handle, the measuring system is initialized, the horizontal moving platform (10) is moved to a measuring area, the non-contact laser sensor (8) is opened, the vertical lifting platform (9) is moved to a position to be measured, and then the horizontal moving platform is moved to enable the non-contact sensor (8) to acquire the complete surface size data of the blade tenon root width. The measurement principle is shown in fig. 4.
Step S4: engine blade tenon root width measurement data mosaic
Combining a coordinate transformation matrix obtained by splicing standard ball point cloud data obtained in the calibration step of the measuring device, splicing the measured data of the blade tenon root width through the coordinate transformation matrix to obtain measured data of the blade tenon root width surface, and processing the data to obtain size data of the blade tenon root width. The engine blade tenon root width measurement data splicing principle is shown in FIG. 5.
Claims (5)
1. The utility model provides an engine blade tenon root width measuring device which characterized in that: the measuring device comprises a cabinet type measuring device (1), a console interactive interface (2), a marble base platform (3), a sensor positioning platform (4), a clamp (5), an engine blade (6), a Z-axis screw (7), a non-contact laser sensor (8), a vertical lifting platform (9), a horizontal moving platform (10), a Y-axis screw (11), a data acquisition device (12) and a calibration ball (13).
2. The engine blade dovetail width measuring device of claim 1, wherein: the sensor positioning table (4) and the horizontal moving table (10) are fixed on the marble base platform (3), and the two non-contact laser sensors (8) are fixed on the two sensor positioning tables (4).
3. The engine blade dovetail width measuring device of claim 1, wherein: the engine blade (6) is clamped on the clamp (5), the blade can be fixed in the clamp (5) through the t-shaped handle, and in order to ensure the measurement accuracy, the central axis of the clamp (5) is coaxial with the central axis of the table top of the vertical lifting platform (9). The clamp is fixed on a vertical lifting platform (9), the vertical lifting platform is fixed on a horizontal moving platform, and the vertical lifting platform can move in the horizontal direction through a Y-axis lead screw (11); the vertical lifting platform can move in the vertical direction through a Z-axis lead screw (7). Therefore, the non-contact sensor (8) can acquire the data of the blade tenon root width.
4. The engine blade dovetail width measuring device of claim 1, wherein: a data acquisition device (12) is arranged in a cabinet below the cabinet type measuring equipment (1) for acquiring and storing data. And the left side of the control console is hung with an interactive interface (2), so that the measurement result can be displayed in real time.
5. The invention also provides a measuring method of the engine blade tenon root width measuring device according to any one of claims 1 to 4, which comprises the following steps:
(a) equipment installation and sensor positioning: and connecting the console interactive interface (2) with a data acquisition device (12) and a non-contact sensor (8). The sensor positioning table (4) is fixed on the marble base platform (3), and the position of the sensor positioning table (4) is adjusted, so that the distance from the center of the horizontal movement platform (10) to the two sides of the sensor positioning table (4) is equal. The non-contact sensor (8) is mounted on the sensor positioning platform such that the two sensor emission beams must be coaxial. The engine blade (6) is clamped and positioned by the clamp (5) and is fixed by the t-shaped handle. The clamp (5) is fixed with the vertical lifting platform (9) through a screw, and the engine blade (6) can be controlled to move in the vertical direction and the horizontal direction by adjusting the vertical lifting platform and the horizontal moving platform, so that the data of the engine blade tenon root width (6) can be acquired. At the same time, the measurement data acquired by the non-contact sensor (8) can be displayed in the interface (2).
(b) Calibrating a measuring device: after the equipment is installed and the position of the non-contact laser sensor (8) is fixed, the engine blade (6) is taken down, the calibration ball is placed (13) and fixed on the clamp (5), the horizontal movement platform (10) and the vertical lifting platform (9) are adjusted to the centers of the two non-contact sensors, measurement software is started, the surface data of the calibration ball (13) are measured, after measurement data are obtained, the data are spliced according to the known size of the calibration ball (13), and a point cloud data splicing coordinate transformation matrix is obtained.
(c) Measuring the width of a tenon root of the engine blade: after the installation and debugging of the measuring device are finished, the calibration ball (13) is taken down, the engine blade (6) is fixed on the clamp through the handle, the measuring system is initialized, the horizontal moving platform (10) is moved to a measuring area, the non-contact laser sensor (8) is opened, the vertical lifting platform (9) is moved to a position to be measured, and then the horizontal moving platform is moved to enable the non-contact sensor (8) to acquire the complete surface size data of the blade tenon root width.
(d) Splicing the measured data of the tenon root width of the engine blade: combining a coordinate transformation matrix obtained by splicing standard ball point cloud data obtained in the calibration step of the measuring device, splicing the measured data of the blade tenon root width through the coordinate transformation matrix to obtain measured data of the blade tenon root width surface, and processing the data to obtain size data of the blade tenon root width.
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| CN202110669696.7A CN113405465A (en) | 2021-06-17 | 2021-06-17 | Engine blade tenon root width measuring device and measuring method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118111350A (en) * | 2024-01-23 | 2024-05-31 | 哈尔滨工业大学 | Aero-engine blade profile measurement device and method based on structured light bidirectional synchronous scanning |
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