Three-way displacement mechanism

Abstract

The utility model discloses a three-way displacement mechanism, which relates to the technical field of precision measurement and comprises a data acquisition system and a fixing block. The fixing block is made of metal materials, a through groove is formed in the fixing block, and three connectors are connected to the fixing block. According to the utility model, the linear transformer differential sensor is combined with the laser vibration meter to accurately monitor and collect the position and vibration data of each part of the engine in the test process, simultaneously measure the displacement along the X axis, the Y axis and the Z axis, and transmit the measured data to the data acquisition system; during testing, the driving motor drives the gear to operate, the coordinate axis is adjusted, the gear drives the teeth on the X axis, the Y axis and the Z axis, so that the X axis, the Y axis and the Z axis move towards the negative coordinate axis through the through grooves, parts of various shapes and sizes are arranged in the engine, and the adjustable coordinate axis enables the testing device to adapt to different requirements of the parts.

Description

Technical Field

[0001] The utility model relates to the technical field of precision measurement, in particular to a three-way displacement mechanism. Background Art

[0002] In aircraft engine testing, a three-axis displacement mechanism is usually used to accurately measure the displacement of engine components in the Y, Z, and X axes, as well as the runout during high-speed rotation. It can measure the displacement along the Y, Z, and X axes. The sensor is usually inductive, capacitive, or laser, with high precision and high-frequency response. When used, standard operating procedures for measurement accuracy and reliability should be ensured, which may include periodic calibration and the use of standard test samples. By accurately measuring the displacement in different axes and the runout of high-speed rotating components, the operating status of the engine can be analyzed, potential problems can be identified, and improvement measures can be proposed;

[0003] The existing data collection devices for Y, Z, X axis coordinates and high-speed rotation runout in aircraft engine tests usually require the comprehensive use of a variety of precision measurement technologies and instruments. Generally, laser displacement sensors are used to measure the distance change and displacement components on the Y, Z, and X axes. Vibrometers can be used to measure the vibration of each axis. Laser rangefinders can measure the tiny displacement and runout of the shaft during high-speed rotation based on the principle of laser reflection.

[0004] The shortcomings of the above scheme are: although the above scheme can measure the axial coordinates and high-speed rotational runout of the engine, the above measurement needs to be measured in steps, which is cumbersome and will prolong the entire measurement process. Each measurement requires resetting and calibrating the equipment, and the coordinate axis is generally fixed and cannot be adjusted, which may lead to inaccurate measurements, equipment positioning errors or deviations during the measurement process that cannot be corrected by adjusting the coordinate axis. Utility Model Content

[0005] The purpose of the utility model is to provide a three-way displacement mechanism to solve the technical problems in the prior art that the above-mentioned measurement needs to be measured in steps, which is relatively cumbersome, and the coordinate axis is generally fixed and cannot be adjusted, which may lead to inaccurate measurement.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A three-way displacement mechanism, including a data acquisition system and a fixed block;

[0008] The fixed block is made of metal material, a through slot is provided on the fixed block, three connectors are connected to the fixed block, a support block is connected between the connector and the fixed block, a measuring axis is detachably connected to the connector, the measuring axis includes an X-axis, a Y-axis and a Z-axis, the X-axis, the Y-axis and the Z-axis are provided with a sensing mechanism, and the X-axis, the Y-axis and the Z-axis are provided with a rotation runout measuring instrument;

[0009] The X-axis, Y-axis and Z-axis are all connected to an installation box, a drive motor is arranged inside the installation box, a gear is connected to the drive end of the drive motor, the X-axis, Y-axis and Z-axis are all provided with teeth meshing with the gear, two connecting blocks are connected to the installation box, a slide groove is arranged inside the connecting block, the X-axis, Y-axis and Z-axis can slide in the connecting block, a bidirectional screw is connected between the two X-axes, an adjusting nut is connected to the bidirectional screw, a magnetic suction cup is connected to the end of the bidirectional screw, and the end of the magnetic suction cup away from the bidirectional screw is connected to the fixed block.

[0010] As a further solution of the utility model: the sensing mechanism is a linear transformer differential sensor.

[0011] As a further solution of the utility model: the vibration measuring instrument is a laser vibrometer.

[0012] As a further solution of the utility model: the induction mechanism and the rotation runout measuring instrument are connected to the data acquisition system via optical fiber.

[0013] As a further solution of the utility model: measurement scale lines are provided on the X-axis, Y-axis and Z-axis.

[0014] As a further solution of the utility model: the X-axis, the Y-axis and the Z-axis are all connected with a protection box.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model uses a linear transformer differential sensor in combination with a laser vibrometer to accurately monitor and collect the position and vibration data of various engine components during the test process, and simultaneously measures the displacement along the X-axis, Y-axis and Z-axis, and transmits the measured data to a data acquisition system; during the test, the gears are driven by a driving motor to adjust the coordinate axis, and the gears drive the teeth on the X-axis, Y-axis and Z-axis, so that the X-axis, Y-axis and Z-axis move toward the negative coordinate axis through the through slot. There are components of various shapes and sizes in the engine, and the adjustable coordinate axis enables the test device to adapt to the different needs of these components.

[0017] 2. The utility model can splice and clamp the coordinate axes for measurement. The two X axes are parallelly connected, a bidirectional screw is placed between the two X axes, and the bidirectional screw is connected to the fixed block through a magnetic chuck, so that the two bidirectional screws adjust the distance between the two X axes, so that the workpiece can be clamped and measured between the two X axes. The parallel axes can ensure the consistency of the measuring force and the stable clamping of the workpiece, thereby reducing the error that may occur in the measurement, and effectively preventing the workpiece from moving or rotating during the measurement process, thereby ensuring the repeatability and reliability of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection structure of the X-axis and the Z-axis in the utility model;

[0021] Figure 3 This is a cross-sectional view of the connection structure between the installation box and the protection box in the utility model;

[0022] Figure 4 It is a schematic diagram of the connection structure of two X axes in the utility model.

[0023] In the figure: 1. fixing block; 2. X-axis; 3. Y-axis; 4. Z-axis; 5. connector; 6. support block; 7. connecting block; 8. teeth; 9. protection box; 10. installation box; 11. gear; 12. bidirectional screw; 13. adjusting nut; 14. magnetic suction cup; 15. through slot. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-Figure 4As shown, the three-way displacement mechanism includes a data acquisition system and a fixed block 1, the fixed block 1 is made of metal material, a through slot 15 is provided on the fixed block 1, three connectors 5 are connected to the fixed block 1, a support block 6 is connected between the connector 5 and the fixed block 1, and a measuring axis is detachably connected to the connector 5, the measuring axis includes an X-axis 2, a Y-axis 3 and a Z-axis 4, the X-axis 2, the Y-axis 3 and the Z-axis 4 are each provided with a sensing mechanism, the sensing mechanism is a linear transformer differential sensor, the X-axis 2, the Y-axis 3 and the Z-axis 4 are provided with a rotational runout measuring instrument, the runout measuring instrument is a laser vibrometer, the sensing mechanism and the rotational runout measuring instrument are connected to the data acquisition system by an optical fiber, the linear transformer differential sensor is used to measure the axial linear displacement of the X-axis 2, the Y-axis 3 and the Z-axis 4, the laser vibrometer is used for side-view high-speed rotation runout measurement, and the collected data is transmitted to the data acquisition system; the X-axis 2, the Y-axis 3 and the Z-axis 4 are each provided with a measuring scale line;

[0026] The X-axis 2, Y-axis 3 and Z-axis 4 are all connected to an installation box 10, a driving motor is arranged inside the installation box 10, a gear 11 is connected to the driving end of the driving motor, a protective box 9 is connected to the X-axis 2, Y-axis 3 and Z-axis 4, teeth 8 meshing with the gear 11 are arranged on the X-axis 2, Y-axis 3 and Z-axis 4, two connecting blocks 7 are connected to the installation box 10, a slide groove is arranged inside the connecting block 7, the X-axis 2, Y-axis 3 and Z-axis 4 can slide in the connecting block 7, the X-axis 2, Y-axis 3 and Z-axis 4 can be detachably arranged, a bidirectional screw 12 is connected between the two X-axes 2, an adjusting nut 13 is connected to the bidirectional screw 12, a magnetic suction cup 14 is connected to the end of the bidirectional screw 12, and the end of the magnetic suction cup 14 away from the bidirectional screw 12 is connected to the fixed block 1.

[0027] The working principle of the utility model is as follows: through the linear transformer differential sensor, combined with the laser vibrometer, the position and vibration data of each engine component during the test process are accurately monitored and collected, and the displacement along the X-axis 2, the Y-axis 3 and the Z-axis 4 is measured at the same time. The linear transformer differential sensor can provide continuous displacement data, and the laser vibrometer can measure the high-speed rotation runout measurement. When the engine rotates, its axial and radial runout and vibration level are measured in real time, and the measured data is transmitted to the data acquisition system; during the test, the gear 11 is driven by the drive motor to operate, and the coordinate axis is adjusted. The gear 11 drives the teeth 8 on the X-axis 2, the Y-axis 3 and the Z-axis 4, so that the X-axis 2, the Y-axis 3 and the Z-axis 4 move toward the negative coordinate axis through the through slot 15. The ability to accurately adjust the coordinate axis helps to improve the accuracy of the data during the test, especially in situations where component movement may cause potential errors. There are components of various shapes and sizes in the engine. The adjustable coordinate axis enables the test device to adapt to the different needs of these components to ensure the effectiveness of the test. By adjusting the coordinate axis to adapt to different test conditions and needs, the error caused by inappropriate measurement position or angle can be reduced; the device can also splice and clamp the coordinate axis for measurement, parallelly dock the two X-axes 2, place the bidirectional screw 12 between the two X-axes 2, and then connect the bidirectional screw 12 to the fixed block 1 through the magnetic chuck 14, so that the two bidirectional screws 12 adjust the distance between the two X-axes 2, so that the workpiece can be clamped and measured between the two X-axes 2, and the parallel axis can ensure the consistency of the measuring force and the stable clamping of the workpiece, thereby reducing the error that may occur in the measurement, and effectively preventing the workpiece from moving or rotating during the measurement process, thereby ensuring the repeatability and reliability of the measurement.

[0028] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A three-dimensional displacement mechanism, comprising a data acquisition system and a fixed block (1); characterized in that: The fixed block (1) is made of a metal material, a through slot (15) is provided on the fixed block (1), three connectors (5) are connected to the fixed block (1), a support block (6) is connected between the connector (5) and the fixed block (1), a measuring axis is detachably connected to the connector (5), the measuring axis comprises an X-axis (2), a Y-axis (3) and a Z-axis (4), a sensing mechanism is provided inside the X-axis (2), the Y-axis (3) and the Z-axis (4), and a rotation runout measuring instrument is provided on the X-axis (2), the Y-axis (3) and the Z-axis (4); The X-axis (2), the Y-axis (3) and the Z-axis (4) are all connected to an installation box (10), a driving motor is provided inside the installation box (10), a driving end of the driving motor is connected to a gear (11), the X-axis (2), the Y-axis (3) and the Z-axis (4) are all provided with teeth (8) meshing with the gear (11), the installation box (10) is connected to two connecting blocks (7), a sliding groove is provided inside the connecting block (7), the X-axis (2), the Y-axis (3) and the Z-axis (4) can slide in the connecting block (7), a bidirectional screw (12) is connected between the two X-axes (2), an adjusting nut (13) is connected to the bidirectional screw (12), a magnetic chuck (14) is connected to the end of the bidirectional screw (12), and the end of the magnetic chuck (14) away from the bidirectional screw (12) is connected to the fixed block (1).

2. The three-way displacement mechanism according to claim 1, characterized in that: The sensing mechanism is a linear transformer differential sensor.

3. The three-way displacement mechanism according to claim 1, characterized in that: The vibration measuring instrument is a laser vibrometer.

4. The three-way displacement mechanism according to claim 1, characterized in that: The induction mechanism and the rotation runout measuring instrument are connected to the data acquisition system via optical fiber.

5. The three-way displacement mechanism according to claim 1, characterized in that: The X-axis (2), the Y-axis (3) and the Z-axis (4) are all provided with measuring scale lines.

6. The three-way displacement mechanism according to claim 1, characterized in that: The X-axis (2), the Y-axis (3) and the Z-axis (4) are all connected with a protection box (9).

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