Linear displacement sensor performance test tool

Abstract

The invention provides a linear displacement sensor performance testing tool. The linear displacement sensor performance testing tool comprises a base, a sample carrying table, a linear driving assembly, a clamping jaw assembly and a grating measuring assembly. The sample carrying table, the linear driving assembly and the grating measuring assembly are all installed on the base. During testing, the linear displacement sensor is arranged on the sample carrying table, so that the stability of the linear displacement sensor in the testing process is ensured. The linear driving assembly comprises a sliding table, and the sliding table can move in the working linear direction of the line displacement sensor. The clamping jaw assembly is installed on the sliding table, and the clamping jaw assembly can be connected to the movable measuring end of the linear displacement sensor in a clamping mode. Along with the movement of the sliding table, the clamping jaw assembly synchronously drives the movable measuring end of the linear displacement sensor to move on the body of the linear displacement sensor. By comparing a measurement value of the grating measurement assembly with a numerical value read from the linear displacement sensor, key performance parameters such as accuracy, linearity and repeatability of the linear displacement sensor can be evaluated, and data support is provided for subsequent troubleshooting and sensor calibration.

Description

Technical Field

[0001] The present application belongs to the technical field of sensor testing, and more specifically, to a linear displacement sensor performance testing tool. Background Art

[0002] In the rapid development of modern industry and technology, linear displacement sensors are indispensable key components in automatic control systems. The accuracy and stability of their performance indicators are directly related to the operating efficiency and safety of the entire system. In order to ensure the accuracy and reliability of linear displacement sensors during use, it is particularly important to test their actual performance. Therefore, a special tooling is needed to test the performance of linear displacement sensors. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a linear displacement sensor performance test tool to solve the technical problem of performing performance testing on linear displacement sensors in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] Provided is a linear displacement sensor performance test fixture, including:

[0006] Pedestal;

[0007] A sample loading platform is connected to the base, and a linear displacement sensor is placed on the sample loading platform;

[0008] A linear drive assembly is mounted on the base, wherein the linear drive assembly includes a slide, and the slide can move along the working straight line direction of the linear displacement sensor;

[0009] A clamping jaw assembly is mounted on the slide, and the clamping jaw assembly can be clamped and connected to the active measuring end of the linear displacement sensor; when the slide moves, the clamping jaw assembly drives the active measuring end of the linear displacement sensor to move on the body of the linear displacement sensor;

[0010] The grating measurement component is connected to the base and is used to measure the displacement of the slide.

[0011] As a further improvement of the above technical solution:

[0012] Optionally, the sample carrier has a mounting groove, the linear displacement sensor is placed in the mounting groove, one end of the mounting groove has an opening, and a safety valve assembly is provided at the opening.

[0013] Optionally, the safety valve assembly includes a valve body and an elastic valve core, the valve body is connected to the base, the elastic valve core is slidably connected to the valve body and elastically presses against the linear displacement sensor on the mounting groove.

[0014] Optionally, the linear drive assembly further includes a slide rail and a drive mechanism, the slide rail is connected to the base, the slide table is slidably connected to the slide rail, and the drive mechanism is drive-connected to the slide table.

[0015] Optionally, the driving mechanism includes a driving screw, a driven nut and a screw seat arranged in pairs, the screw seats arranged in pairs are all connected to the base and are respectively connected to the two ends of the driving screw, the driving screw is rotatably connected to the screw seat, the driven nut is connected to the slide, and is sleeved on the driving screw and threadedly connected to the driving screw.

[0016] Optionally, the clamp assembly includes a shell, a fixed claw flap, a movable claw flap and a handle, the shell is connected to the slide, the fixed claw flap is connected to the shell, the movable claw flap is movably connected to the shell, and the handle is drivingly connected to the movable claw flap to drive the movable claw flap closer to or away from the fixed claw flap.

[0017] Optionally, the grating measurement component includes a grating scale and a grating reading head, the grating scale is connected to the base, the grating reading head is connected to the slide, and the grating reading head is slidably connected to the grating scale.

[0018] Optionally, the sample carrier is located on one side of the moving direction of the slide, and the grating assembly is located on the other side of the moving direction of the slide.

[0019] Optionally, the linear displacement sensor performance testing tool includes a voltage source, and the voltage source is electrically connected to the linear displacement sensor.

[0020] Optionally, the linear displacement sensor performance testing tool further includes a voltmeter, and the voltmeter is electrically connected to the linear displacement sensor.

[0021] The beneficial effects of the linear displacement sensor performance test tool provided by the present application are:

[0022] The linear displacement sensor performance test tool provided in the present application includes a base, a sample stage, a linear drive component, a clamping jaw component and a grating measurement component. Among them, the sample stage, the linear drive component and the grating measurement component are all installed on the base. During the test, the linear displacement sensor is placed on the sample stage to ensure the stability of the linear displacement sensor during the test. The linear drive component specifically includes a slide, which can move along the working straight line direction of the linear displacement sensor. The clamping jaw component is installed on the slide, and the clamping jaw component can be clamped and connected to the active measuring end of the linear displacement sensor. As the slide moves, the clamping jaw component synchronously drives the active measuring end of the linear displacement sensor to move on its body, simulating the measurement action in actual work. The grating measurement component can convert the displacement of the slide into an electrical signal. By comparing the measured value of the grating measurement component with the value read on the linear displacement sensor, the key performance parameters such as accuracy, linearity and repeatability of the linear displacement sensor can be evaluated, and data support is also provided for subsequent troubleshooting and sensor calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the linear displacement sensor performance test tooling provided in this application;

[0025] Figure 2 A schematic diagram of the top view of the linear displacement sensor performance test tooling provided in this application;

[0026] Figure 3 A schematic diagram of a partially enlarged structure of a linear displacement sensor performance test fixture provided in this application;

[0027] Figure 4 A schematic diagram of the three-dimensional structure of the clamping jaw assembly provided in this application;

[0028] Figure 5 A schematic diagram of the three-dimensional structure of the sample loading platform and safety valve assembly provided for this application.

[0029] Among them, the reference numerals in the figure are:

[0030] 1. Base;

[0031] 2. Sample loading platform; 21. Mounting slot;

[0032] 3. Linear displacement sensor;

[0033] 4. Linear drive assembly; 41. Slide; 42. Slide rail; 43. Driving mechanism; 431. Driving screw; 432. Driven nut; 433. Screw seat;

[0034] 5. Clamping jaw assembly; 51. Housing; 52. Fixed claw flap; 53. Movable claw flap; 54. Handle;

[0035] 6. Grating measurement component; 61. Grating scale; 62. Grating reading head;

[0036] 7. Safety valve assembly; 71. Valve body; 72. Elastic valve core. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of the present invention.

[0043] In the following description, suffixes such as "module", "component", "assembly" or "unit" are used only to facilitate the description of the present invention and have no specific meanings. Therefore, they can be used in combination.

[0044] The present invention will be further described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0045] To test the performance of the linear displacement sensor, Figure 1 and Figure 2 As shown, the present application provides a linear displacement sensor performance test tool, including a base 1, a sample stage 2, a linear drive assembly 4, a clamping jaw assembly 5 and a grating measurement assembly 6. Among them, the sample stage 2, the linear drive assembly 4 and the grating measurement assembly 6 are all installed on the base 1. During the test, the linear displacement sensor 3 is placed on the sample stage 2 to ensure the stability of the linear displacement sensor 3 during the test. The linear drive assembly 4 specifically includes a slide 41, and the slide 41 can move along the working straight line direction of the linear displacement sensor 3. The clamping jaw assembly 5 is installed on the slide 41, and the clamping jaw assembly 5 can be clamped and connected to the active measuring end of the linear displacement sensor 3. As the slide 41 moves, the clamping jaw assembly 5 synchronously drives the active measuring end of the linear displacement sensor 3 to displace on its body, simulating the measurement action in actual work. The grating measurement component 6 can convert the displacement of the slide 41 into an electrical signal. By comparing the measurement value of the grating measurement component 6 with the value read on the linear displacement sensor 3, the key performance parameters of the linear displacement sensor 3, such as accuracy, linearity and repeatability, can be evaluated, and data support is also provided for subsequent troubleshooting and sensor calibration.

[0046] like Figure 1 and Figure 5As shown, in a specific embodiment of the present application, a mounting groove 21 is provided on the sample carrier 2, and the linear displacement sensor 3 is placed in the mounting groove 21, and the mounting groove 21 limits the linear displacement sensor 3. One end of the mounting groove 21 has an opening, and a safety valve assembly 7 is provided at the opening. The linear displacement sensor 3 is fixed on the sample carrier 2 by the cooperation of the safety valve assembly 7 and the mounting groove 21, and the safety valve assembly 7 can also protect the linear displacement sensor 3. When the active measuring end of the linear displacement sensor 3 reaches its predetermined limit position when performing a measurement task, if the clamping jaw assembly 5 continues to try to drive the active measuring end to move further due to misoperation or external factors, the safety valve assembly 7 can absorb and offset the additional displacement from the clamping jaw assembly 5 through its deformation mechanism, thereby avoiding direct mechanical impact and potential damage to the linear displacement sensor 3, which not only protects the structure of the sensor from damage, but also ensures the continuous and stable operation of the entire measurement system, thereby extending the service life of the equipment.

[0047] like Figure 1 and Figure 5 As shown, in a specific embodiment of the present application, the safety valve assembly 7 includes a valve body 71 and an elastic valve core 72. Among them, the valve body 71 serves as the support and positioning basis of the entire assembly, and is connected to the base 1. The elastic valve core 72 is slidably connected to the valve body 71, and is elastically pressed against the linear displacement sensor 3 on the mounting groove 21. Under normal working conditions, when the force of the linear displacement sensor 3 acting on the elastic valve core 72 does not exceed the preset safety threshold, the elastic valve core 72 maintains its extended state and is firmly pressed against the linear displacement sensor 3. Once the jaw assembly 5 pushes the active measuring end of the linear displacement sensor 3 beyond the limit position, causing the force acting on the elastic valve core 72 to exceed the safety threshold, the elastic valve core 72 automatically retracts into the valve body 71, thereby effectively blocking the pressure from continuing to rise and protecting the linear displacement sensor 3 from rigid damage.

[0048] like Figure 1 and Figure 3 As shown, in a specific embodiment of the present application, the linear drive assembly 4 also includes a slide rail 42 and a drive mechanism 43. The slide rail 42 is connected to the base 1, the slide 41 is slidably connected to the slide rail 42, and the drive mechanism 43 is used to drive the slide 41 to reciprocate linearly on the slide rail 42. The drive mechanism 43 can specifically adopt a motor, hydraulic / cylinder or other drive methods, and the specific selection depends on the needs of the actual application scenario to ensure that the linear drive assembly 4 can meet different working conditions and performance requirements.

[0049] like Figure 1 and Figure 3As shown, in a specific embodiment of the present application, the driving mechanism 43 includes a driving screw 431, a driven nut 432 and a screw seat 433 arranged in pairs. The screw seats 433 arranged in pairs are all connected to the base 1, and are respectively connected to the two ends of the driving screw 431 to fix and support the driving screw 431. The driving screw 431 is rotatably connected to the screw seat 433, ensuring the rotational freedom of the driving screw 431. The driven nut 432 is connected to the slide 41, and is sleeved on the driving screw 431, and is threadedly connected to the driving screw 431. When the driving screw 431 rotates under the action of an external force, the driven nut 432 converts the rotational motion into a linear motion through the interaction between the threads, thereby driving the slide 41 to slide smoothly along a preset trajectory.

[0050] like Figure 1 and Figure 4 As shown, in a specific embodiment of the present application, the clamping jaw assembly 5 includes a housing 51, a fixed claw flap 52, a movable claw flap 53 and a handle 54. The housing 51 is connected to the slide 41, and the slide 41 drives the housing 51 to move along a preset path. The fixed claw flap 52 is connected to the housing 51, and the movable claw flap 53 is movably connected to the housing 51. The handle 54 is drivingly connected to the movable claw flap 53 to drive the movable claw flap 53 to move closer to or away from the fixed claw flap 52, thereby clamping or releasing the movable measuring end of the linear displacement sensor 3.

[0051] like Figure 1 and Figure 2 As shown, in a specific embodiment of the present application, the grating measurement assembly 6 includes a grating scale 61 and a grating reading head 62. The grating scale 61 is connected to the base 1, and the grating reading head 62 is connected to the slide 41. The grating reading head 62 is slidably connected to the grating scale 61. The grating reading head 62 can read the grating pattern on the grating scale 61 in real time and convert it into an electrical signal for processing, thereby realizing the conversion from physical displacement to digital signal.

[0052] like Figure 1 and Figure 2 As shown, in a specific embodiment of the present application, the sample stage 2 is located on one side of the moving direction of the slide 41, and the grating assembly is located on the other side of the moving direction of the slide 41, thereby reducing the length of the space required for the slide 41 in the main moving direction and avoiding stability problems that may be caused by an overly long structure. By placing the sample stage 2 and the grating assembly on both sides of the slide 41, the overall size of the device is effectively reduced, the structural rigidity of the slide 41 is improved, and the flexural deformation caused by long-distance movement is reduced.

[0053] In a specific embodiment of the present application, the linear displacement sensor performance test tool includes a voltage source (not shown), which is electrically connected to the linear displacement sensor 3. The voltage source is used to provide a continuous and stable voltage during the test process to meet the basic conditions for the normal operation of the linear displacement sensor 3.

[0054] In a specific embodiment of the present application, the linear displacement sensor performance test tool further includes a voltmeter (not shown), which is electrically connected to the linear displacement sensor 3. As the displacement of the active measuring end of the linear displacement sensor 3 changes, the electrical signal output by the linear displacement sensor 3 fluctuates. The voltmeter can capture and record the changes in the electrical signal of the linear displacement sensor 3 when it is working, so as to analyze its performance parameters.

[0055] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A linear displacement sensor performance test tool, characterized in that: include: Base (1); A sample carrier (2) is connected to the base (1), and a linear displacement sensor (3) is placed on the sample carrier (2); A linear drive assembly (4) is mounted on the base (1), wherein the linear drive assembly (4) comprises a slide table (41), and the slide table (41) can move along the working linear direction of the linear displacement sensor (3); a clamping jaw assembly (5) mounted on the slide table (41), the clamping jaw assembly (5) being clampably connected to the movable measuring end of the linear displacement sensor (3); when the slide table (41) moves, the clamping jaw assembly (5) drives the movable measuring end of the linear displacement sensor (3) to move on the body of the linear displacement sensor (3); A grating measurement component (6) is connected to the base (1) and is used to measure the displacement of the slide table (41).

2. The linear displacement sensor performance testing tool as claimed in claim 1, characterized in that: The sample carrier (2) is provided with a mounting groove (21), the linear displacement sensor (3) is placed in the mounting groove (21), one end of the mounting groove (21) is open, and a safety valve assembly (7) is provided at the open end.

3. The linear displacement sensor performance testing tool as claimed in claim 2, characterized in that: The safety valve assembly (7) comprises a valve body (71) and an elastic valve core (72); the valve body (71) is connected to the base (1); the elastic valve core (72) is slidably connected to the valve body (71) and elastically presses against the linear displacement sensor (3) on the mounting groove (21).

4. The linear displacement sensor performance testing tool as claimed in any one of claims 1 to 3, characterized in that: The linear drive assembly (4) further comprises a slide rail (42) and a drive mechanism (43); the slide rail (42) is connected to the base (1); the slide table (41) is slidably connected to the slide rail (42); and the drive mechanism (43) is drive-connected to the slide table (41).

5. The linear displacement sensor performance testing tool as claimed in claim 4, characterized in that: The driving mechanism (43) comprises a driving screw (431), a driven nut (432) and a screw seat (433) arranged in pairs. The screw seats (433) arranged in pairs are both connected to the base (1) and are respectively connected to the two ends of the driving screw (431). The driving screw (431) is rotatably connected to the screw seat (433). The driven nut (432) is connected to the slide (41), sleeved on the driving screw (431), and threadedly connected to the driving screw (431).

6. The linear displacement sensor performance testing tool as claimed in any one of claims 1 to 3, characterized in that: The clamping jaw assembly (5) includes a shell (51), a fixed claw flap (52), a movable claw flap (53) and a handle (54); the shell (51) is connected to the slide table (41); the fixed claw flap (52) is connected to the shell (51); the movable claw flap (53) is movably connected to the shell (51); and the handle (54) is drivingly connected to the movable claw flap (53) to drive the movable claw flap (53) to move closer to or farther from the fixed claw flap (52).

7. The linear displacement sensor performance testing tool as claimed in any one of claims 1 to 3, characterized in that: The grating measurement component (6) comprises a grating scale (61) and a grating reading head (62), wherein the grating scale (61) is connected to the base (1), and the grating reading head (62) is connected to the slide table (41), and the grating reading head (62) is slidably connected to the grating scale (61).

8. The linear displacement sensor performance testing tool as claimed in any one of claims 1 to 3, characterized in that: The sample carrier (2) is located on one side of the moving direction of the slide (41), and the grating component is located on the other side of the moving direction of the slide (41).

9. The linear displacement sensor performance testing tool as claimed in any one of claims 1 to 3, characterized in that: It comprises a voltage source, and the voltage source is electrically connected to the linear displacement sensor (3).

10. The linear displacement sensor performance testing tool as claimed in claim 9, characterized in that: It also comprises a voltmeter, which is electrically connected to the linear displacement sensor (3).

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