High-precision rocket body valve diaphragm morphology detection system and method
By designing a high-precision arrow body shutter diaphragm morphology detection system, the coordinated work of the support unit, vibration damping unit, workbench, rotary movement unit and linear movement unit is used to achieve efficient and stable detection of all areas of the diaphragm, solving the problem of poor diaphragm mark morphology detection in the prior art.
Patent Information
- Application Number
- CN202411824815.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-05-02
AI Technical Summary
The prior art lacks high-precision diaphragm morphology detection methods, resulting in the incisive morphology of the arrow shutter diaphragm that cannot be effectively detected, affecting the consistency of product performance and batch production efficiency.
A high-precision arc-body shutter diaphragm morphology detection system is designed, including a support unit, a vibration-absorbing unit, a workbench, a rotary motion unit and a linear motion unit. Through the coordinated work of these units, efficient and stable detection of all areas of the diaphragm is achieved.
It realizes efficient and stable detection of all areas of the diaphragm, covers diaphragms of different specifications and sizes, solves the problem of diaphragm mark measurement, and ensures the stable and reliable performance of the detection device.
Smart Images
Figure CN119915204A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of diaphragm shape detection, and in particular relates to a high-precision arrow body valve diaphragm shape detection system and method. Background Art
[0002] As a key component of the rocket body valve, the diaphragm’s notch morphology is directly and closely related to the valve performance, and has an intrinsic connection with the valve sealing, opening and closing pressure and other performance parameters, and forms a comprehensive influencing mechanism on the valve performance parameters. However, there is no relevant testing equipment in the production process, and its external characteristics are mainly detected manually. The notch morphology characteristics cannot be detected or measured, and it is impossible to quantify the internal connection laws and action mechanisms. As a result, during the development stage, it can only be achieved through iterative design, contour correction based on experience, and continuous testing to achieve development and finalization. In the batch production stage, the batch production quality can only be evaluated through sampling destructive tests, which affects the batch production efficiency and the consistency evaluation of product performance. Manual sampling inspection has problems such as low efficiency and high error rate. Summary of the invention
[0003] In order to solve the above problems existing in the prior art, the object of the present invention is to provide a high-precision arrow body valve diaphragm morphology detection system and method, which can efficiently and stably detect all areas of the diaphragm.
[0004] The technical solution adopted by the present invention is:
[0005] A high-precision arrow body valve diaphragm morphology detection system comprises a support unit, a vibration reduction unit is installed on the support unit, a workbench is installed on the vibration reduction unit, a rotary motion unit is installed on the workbench, and a diaphragm to be tested is placed on the rotary motion unit; a linear motion unit is also installed on the workbench, an output end of the linear motion unit is connected to a height fine-tuning unit, and a measuring unit for measuring the diaphragm to be tested is installed on the height fine-tuning unit.
[0006] During normal operation, the linear motion unit is driven to move the measuring unit to the specified diameter of the diaphragm to be measured and stop; the height fine-tuning unit is adjusted according to the type and size of the diaphragm to be measured. When the measurement can clearly complete the focusing process of the diaphragm to be measured, the rotary motion unit is driven to complete the morphology detection of different circumferential positions at the same diameter of the diaphragm to be measured. After the morphology detection of different circumferential positions at the same diameter of the diaphragm to be measured is completed, the linear motion unit is driven to move to the next diameter position specified by the diaphragm to be measured, and the height fine-tuning unit is adjusted to detect the next position; until all positions at different radial positions of the diaphragm to be measured are completely detected.
[0007] The diaphragm to be tested is mounted on the measuring reference. The measuring unit scans the measuring reference surface and the entire three-dimensional shape of the diaphragm to be tested, and calculates the distance from the upper surface of the diaphragm to the reference based on the upper surface of the measuring reference to obtain the diaphragm thickness value.
[0008] In view of the fact that there is no specific detection method for diaphragm products before, the present invention provides an automatic detection device for the diaphragm to be tested, which solves the problem of measuring the notch of the diaphragm of the arrow body valve. In order to ensure the stable and reliable performance of the developed detection device, the device calibration technology is also studied. The present invention can cover the detection of diaphragms of different specifications and sizes. The present invention can perform full detection on all areas of the diaphragm efficiently and stably.
[0009] As a preferred solution of the present invention, the support unit is a leg support frame placed on the ground, and the vibration reduction unit is installed on the leg support frame.
[0010] As a preferred solution of the present invention, the vibration reduction unit is an air-floating vibration reduction device fastened between the support unit and the workbench. Before the device is operated, the diaphragm to be tested is placed on the diaphragm detection fixture, and the four air-floating vibration reduction devices under the workbench are ventilated. After ventilation, the workbench is in a vibration isolation state under the action of the air-floating vibration reduction devices.
[0011] As a preferred solution of the present invention, the rotary motion unit comprises an electric rotary table fastened to the workbench, a diaphragm detection fixture is installed on the electric rotary table, and the diaphragm to be tested is placed on the diaphragm detection fixture through clearance fit.
[0012] As a preferred solution of the present invention, the linear motion unit includes a column fastened to a workbench, a transverse bracket is fixed to the column, a magnetic levitation linear displacement module stator is installed in the transverse bracket, a magnetic levitation linear displacement module mover is arranged in the magnetic levitation linear displacement module stator, an adapter is fastened to the magnetic levitation linear displacement module mover, and a height fine-tuning unit is installed on the adapter. The linear motion unit is driven, and under the action of magnetic force between the magnetic levitation linear displacement module stator and the magnetic levitation linear displacement module mover, the magnetic levitation linear displacement module mover drives the adapter and the measuring unit to move linearly, so that the linear position of the measuring unit is accurately adjusted.
[0013] As a preferred solution of the present invention, the adapter is sleeved on a transverse bracket. When the adapter moves with the magnetic floating linear displacement module mover, the transverse bracket guides the adapter.
[0014] As a preferred solution of the present invention, the height fine-tuning unit comprises a manual high-precision displacement stage fastened to the adapter, and the measuring unit is mounted on the manual high-precision displacement stage. By adjusting the height fine-tuning unit, the height of the measuring unit can be precisely adjusted.
[0015] As a preferred solution of the present invention, the measuring unit is a CCD industrial camera fastened to the height fine-tuning unit.
[0016] A high-precision method for detecting the shape of a rocket valve diaphragm comprises the following steps:
[0017] S1: Place the diaphragm to be tested on the rotary motion unit and start the vibration reduction unit under the workbench; drive the rotary motion unit to rotate the diaphragm to be tested to the initial position; drive the linear motion unit and adjust the height fine-tuning unit to move the measuring unit to the specified initial position;
[0018] S2: During normal operation, the linear motion unit is driven to move the measuring unit to the specified diameter of the diaphragm to be measured and stop; the height fine-tuning unit is adjusted according to the type and size of the diaphragm to be measured; when the measurement can clearly complete the focusing process of the diaphragm to be measured, the rotary motion unit is driven to complete the morphology detection of the diaphragm to be measured at different circumferential positions at the same diameter;
[0019] S3: After the topography detection of different circumferential positions at the same diameter of the diaphragm to be tested is completed, the linear motion unit is driven to move to the next specified diameter position of the diaphragm to be tested, and the height fine-tuning unit is adjusted to detect the next position; until all positions at different radial positions of the diaphragm to be tested are completely detected.
[0020] As a preferred solution of the present invention, in step S2, when the morphology of the membrane to be tested at different circumferential positions at the same diameter is detected, the specific steps are:
[0021] S21: The measuring unit generates an array beam, which is amplified and focused by a special optical coupler and an optical lens, and then spectrally dispersed and projected onto the surface of the film to be measured. Each light spot forms a continuous monochromatic light focus on the optical axis, and the distance from each monochromatic light focus to the film to be measured is different. When the workpiece to be measured is at a certain position within the measuring range, only light of a certain wavelength is focused there, and the distance information is converted into the wavelength information, and the measured distance is obtained through spectral measurement.
[0022] S22: The rotary motion unit drives the diaphragm to be measured to rotate, and for the next position, the measured distance is obtained by spectrum measurement; until all positions of the same diameter are tested.
[0023] The beneficial effects of the present invention are:
[0024] In view of the fact that there is no specific detection method for diaphragm products before, the present invention provides an automatic detection device for the diaphragm to be tested, which solves the problem of measuring the notch of the diaphragm of the arrow body valve. In order to ensure the stable and reliable performance of the developed detection device, the device calibration technology is also studied. The present invention can cover the detection of diaphragms of different specifications and sizes. The present invention can perform full detection on all areas of the diaphragm efficiently and stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the structure of the present invention;
[0026] Figure 2It is a partial structural diagram of the present invention;
[0027] Figure 3 This is a diagram of diaphragm thickness measurement.
[0028] In the figure: 1-leg support frame; 2-air floating shock absorber; 3-workbench; 4-electric rotating table; 5-diaphragm detection tooling; 6-column; 7-magnetic levitation linear displacement module stator; 8-manual high-precision displacement stage; 9-CCD industrial camera; 10-diaphragm to be tested; 11-magnetic levitation linear displacement module mover; 12-adapter. DETAILED DESCRIPTION
[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.
[0031] like Figure 1 and Figure 2 As shown, the high-precision arrow body valve diaphragm morphology detection system of this embodiment includes a supporting unit, a vibration reduction unit is installed on the supporting unit, a workbench 3 is installed on the vibration reduction unit, a rotational motion unit is installed on the workbench 3, and the diaphragm 10 to be tested is placed on the rotational motion unit; a linear motion unit is also installed on the workbench 3, the output end of the linear motion unit is connected to a height fine-tuning unit, and a measuring unit for measuring the diaphragm 10 to be tested is installed on the height fine-tuning unit.
[0032] In view of the fact that there is no specific detection method for diaphragm products before, the present invention provides an automatic detection device for the diaphragm 10 to be tested, solving the problem of measuring the notch of the arrow body valve diaphragm. In order to ensure the stable and reliable performance of the developed detection device, the device calibration technology is also studied. The present invention can cover the detection of diaphragms of different specifications and sizes. The present invention can perform full detection on all areas of the diaphragm efficiently and stably.
[0033] The support unit is a leg support frame 1 placed on the ground, and the vibration reduction unit is installed on the leg support frame 1 .
[0034] The vibration reduction unit is an air-floating vibration reducer 2 fastened between the support unit and the workbench 3. Before the device works, after the diaphragm 10 to be tested is placed on the diaphragm detection fixture 5, the four air-floating vibration reducers 2 under the workbench 3 are ventilated. After ventilation, the workbench 3 is in a vibration isolation state under the action of the air-floating vibration reducer 2.
[0035] The rotary motion unit comprises an electric rotary table 4 fastened on the workbench 3 , a diaphragm detection fixture 5 is installed on the electric rotary table 4 , and the diaphragm 10 to be tested is placed on the diaphragm detection fixture 5 through clearance fit.
[0036] Specifically, the linear motion unit includes a column 6 fastened to the workbench 3, a transverse bracket is fixed to the column 6, a magnetic levitation linear displacement module stator 7 is installed in the transverse bracket, a magnetic levitation linear displacement module mover 11 is arranged in the magnetic levitation linear displacement module stator 7, an adapter 12 is fastened to the magnetic levitation linear displacement module mover 11, and the height fine-tuning unit is installed on the adapter 12. When the linear motion unit is driven, under the action of the magnetic force between the magnetic levitation linear displacement module stator 7 and the magnetic levitation linear displacement module mover 11, the magnetic levitation linear displacement module mover 11 drives the adapter 12 and the measuring unit to move linearly, so that the linear position of the measuring unit is accurately adjusted.
[0037] Furthermore, the adapter 12 is sleeved on the transverse bracket. When the adapter moves with the magnetic levitation linear displacement module mover 11, the transverse bracket guides the adapter 12.
[0038] The height fine-tuning unit comprises a manual high-precision displacement stage 8 fastened to the adapter 12, and the measuring unit is mounted on the manual high-precision displacement stage 8. By adjusting the height fine-tuning unit, the height of the measuring unit can be precisely adjusted.
[0039] The measuring unit is a CCD industrial camera 9 fastened on the height fine-tuning unit.
[0040] The high-precision arrow body valve diaphragm morphology detection method of this embodiment includes the following steps:
[0041] S1: Before the device works, place the diaphragm 10 to be tested on the diaphragm detection fixture 5, and ventilate the four air-floating shock absorbers 2 under the workbench 3. After ventilation, the table surface is in a vibration isolation state under the action of the air-floating shock absorbers 2. Drive the electric rotating table 4 to rotate the diaphragm 10 to the initial position. Drive the linear motion unit to move the magnetic levitation linear displacement module mover 11 to the specified initial position. Manually adjust the manual high-precision displacement table 8 to the specified scale position to complete the initial state adjustment of the device.
[0042] S2: During normal operation, the linear motion unit is driven to move the magnetic floating linear displacement module mover 11 to the specified diameter of the diaphragm 10 to be tested and stop. The manual high-precision displacement stage 8 is fine-tuned according to the type and size of the diaphragm 10 to be tested. When the CCD industrial camera 9 can clearly complete the focusing process of the diaphragm 10 to be tested, the electric rotating stage 4 is driven to complete the morphology detection of the diaphragm 10 to be tested at different circumferential positions at the same diameter.
[0043] S3: After the morphology detection of different circumferential positions at the same diameter of the diaphragm 10 to be tested is completed, the linear displacement module mover is driven to move to the next specified diameter position of the diaphragm 10 to be tested, and the manual high-precision displacement stage 8 is adjusted to detect the next position. Under this working principle, all positions at different radial positions of the diaphragm 10 to be tested can be fully detected.
[0044] In step S2, when the morphology of the diaphragm 10 to be tested at different circumferential positions at the same diameter is detected, the specific steps are as follows:
[0045] S21: The data collection of the film score profile is based on multi-wavelength array scanning measurement technology. The scanning system of the measuring unit generates an array light beam. Through a special optical coupler and an optical lens, the light beam is amplified and focused, and then spectrally dispersed and projected onto the surface of the workpiece to be measured. Each light spot forms a continuous monochromatic light focus on the optical axis, and the distance from each monochromatic light focus to the object to be measured is different. When the workpiece to be measured is at a certain position within the measurement range, only a certain wavelength of light is focused there, and the distance information is converted into the wavelength information, and the measured distance is obtained through spectral measurement;
[0046] S22: The data collection of the membrane scratch profile is based on the structural characteristics of the membrane scratch and adopts a rotating scanning method. The width of the profile collection line is greater than 2mm, and the collection line is composed of a 4μm pitch multi-wavelength array. The single collection array profile depth measurement range exceeds 1000μm, and the single line profile of the profile collection device covers 2000μm (width) × 1000μm (height), realizing radial rotation and rapid scanning and collection along the scratch profile.
[0047] The principle of diaphragm thickness calculation is as follows Figure 3 As shown, the diaphragm is mounted on the measuring reference. The scanning sensor scans the measuring reference surface and the entire three-dimensional shape of the diaphragm, and takes the upper surface of the measuring reference as the reference to calculate the distance D from the upper surface of the diaphragm to the reference, and obtains the diaphragm thickness value H.
[0048] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.
Claims
1. A high-precision rocket valve diaphragm morphology detection system, characterized by: The invention comprises a support unit, a vibration reduction unit is installed on the support unit, a workbench (3) is installed on the vibration reduction unit, a rotary motion unit is installed on the workbench (3), and a diaphragm (10) to be tested is placed on the rotary motion unit; a linear motion unit is also installed on the workbench (3), an output end of the linear motion unit is connected to a height fine-tuning unit, and a measuring unit for measuring the diaphragm (10) to be tested is installed on the height fine-tuning unit.
2. A high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The support unit is a leg support frame (1) placed on the ground, and the vibration reduction unit is installed on the leg support frame (1).
3. A high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The vibration reduction unit is an air-floating vibration reduction device (2) fastened between the support unit and the workbench (3).
4. A high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The rotary motion unit comprises an electric rotary table (4) fastened to a workbench (3), a diaphragm detection tool (5) being installed on the electric rotary table (4), and a diaphragm (10) to be tested is placed on the diaphragm detection tool (5) through clearance fit.
5. The high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The linear motion unit comprises a column (6) fastened to a workbench (3), a transverse bracket being fixed to the column (6), a magnetic levitation linear displacement module stator (7) being installed in the transverse bracket, a magnetic levitation linear displacement module mover (11) being arranged in the magnetic levitation linear displacement module stator (7), an adapter (12) being fastened to the magnetic levitation linear displacement module mover (11), and a height fine-tuning unit being installed on the adapter (12).
6. A high-precision rocket valve diaphragm shape detection system according to claim 5, characterized in that: The adapter (12) is sleeved on the transverse bracket.
7. The high-precision rocket valve diaphragm shape detection system according to claim 5, characterized in that: The height fine-tuning unit comprises a manual high-precision displacement stage (8) fastened to an adapter (12), and the measuring unit is mounted on the manual high-precision displacement stage (8).
8. The high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The measuring unit is a CCD industrial camera (9) fastened on the height fine-tuning unit.
9. A high-precision rocket valve diaphragm shape detection method, using the high-precision rocket valve diaphragm shape detection system according to claim 1, characterized in that: The following steps are involved: S1: placing the diaphragm (10) to be tested on the rotary motion unit and starting the vibration reduction unit under the workbench (3); Drive the rotary motion unit to rotate the diaphragm to be tested to the initial position; drive the linear motion unit and adjust the height fine-tuning unit to move the measuring unit to the specified initial position; S2: During normal operation, the linear motion unit is driven to move the measuring unit to a specified diameter of the diaphragm (10) to be measured and stop moving; the height fine-tuning unit is adjusted according to the type and size of the diaphragm (10) to be measured; when the measurement can clearly complete the focusing process of the diaphragm (10) to be measured, the rotary motion unit is driven to complete the morphology detection of the diaphragm (10) to be measured at different circumferential positions at the same diameter; S3: After the morphology detection of different circumferential positions at the same diameter of the diaphragm (10) to be tested is completed, the linear motion unit is driven to move to the next specified diameter position of the diaphragm (10) to be tested, and the height fine-tuning unit is adjusted to perform detection of the next position; until all positions at different radial positions of the diaphragm (10) to be tested are completely detected.
10. A high-precision arrow body valve diaphragm morphology detection method according to claim 9, characterized in that: In step S2, when the morphology of the membrane (10) to be tested at different circumferential positions at the same diameter is detected, the specific steps are as follows: S21: The measuring unit generates an array light beam, which is amplified and focused by a special optical coupler and an optical lens, and then spectrally dispersed and projected onto the surface of the film (10) to be measured; each light spot forms a continuous monochromatic light focus on the optical axis, and the distance from each monochromatic light focus to the film (10) to be measured is different; when the workpiece to be measured is at a certain position within the measuring range, only light of a certain wavelength is focused at that position, and the distance information is converted into the wavelength information, and the measured distance is obtained through spectral measurement; S22: The rotary motion unit drives the diaphragm (10) to be tested to rotate, and for the next position, the measured distance is obtained through spectrum measurement; until all positions of the same diameter are tested.