Detection tool for linear displacement sensor

Abstract

The utility model discloses a detection tool for a linear displacement sensor, which comprises a base, a guide rail, the linear displacement sensor and a standard displacement measuring device, the guide rail is arranged on the base, a sliding platform capable of sliding back and forth is arranged on the guide rail, and the standard displacement measuring device is arranged on the sliding platform. The standard displacement measuring device is used for measuring the actual displacement of the sliding platform, and the linear displacement sensor is arranged on one side of the sliding platform. Through the arrangement of the detection tool structure, the precision, linearity, repeatability and other performances of the linear displacement sensor can be rapidly and accurately detected.

Description

Technical Field

[0001] This utility model belongs to the field of sensor detection technology, specifically relating to a detection fixture for a linear displacement sensor. Background Technology

[0002] Linear displacement sensor testing fixtures refer to the tools and equipment used to inspect the quality of linear displacement sensors. During the manufacturing process, they ensure that the product meets design requirements and specifications, verifies its quality and performance, and ensures that the product reaches the expected standards. Linear displacement sensors are widely used in industrial automation, mechanical equipment, precision measurement, and other fields, and their accuracy directly affects the control precision and measurement results of the system. Currently, the testing of linear displacement sensors largely relies on general-purpose testing equipment, which suffers from problems such as complex operation, low testing efficiency, and high cost. Furthermore, existing testing equipment often cannot meet the testing needs of sensors of different specifications, exhibiting poor versatility.

[0003] Therefore, this study investigates and improves the existing structure and its shortcomings, and provides a detection fixture for a linear displacement sensor in order to achieve a more practical purpose. Utility Model Content

[0004] In view of at least one problem in the prior art, one objective of this utility model is to provide a detection fixture that is simple in structure, easy to operate, has high detection accuracy, and is applicable to linear displacement sensors of various specifications, so as to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A testing fixture for a linear displacement sensor includes a base, a guide rail, a linear displacement sensor, and a standard displacement measuring device. The base is provided with a guide rail, and the guide rail is provided with a sliding platform that can slide back and forth. The standard displacement measuring device is installed on the sliding platform and is used to measure the actual displacement of the sliding platform. The linear displacement sensor is located on one side of the sliding platform.

[0007] Preferably, the base is provided with a rotatable drive shaft, which is used to drive the sliding platform to move linearly. The drive shaft is set in the guide rail and is provided with a drive thread. The sliding platform is provided with a drive hole for the drive shaft to pass through, and the drive hole is provided with a thread groove that matches the drive thread.

[0008] Preferably, the base is provided with a drive mechanism for driving the drive shaft to rotate.

[0009] Preferably, the drive hole is provided with symmetrically distributed and semi-circular drive arc plates, the threaded groove is provided on the inner wall of the drive arc plate, the inner wall of the drive hole is provided with a hydraulic rod fixedly connected to it, the hydraulic rod is fixedly connected to the drive arc plate, and the guide rail is also provided with a reset spring for driving the sliding platform to return to its initial position.

[0010] Preferably, the linear displacement sensor is equipped with a displacement display for displaying displacement values.

[0011] Preferably, the standard displacement measuring device is one of a high-precision grating ruler, a laser displacement sensor, or a capacitive displacement sensor.

[0012] Compared with the prior art, the present invention has the following technical effects:

[0013] The detection fixture for the linear displacement sensor of this invention, through the setting of the above-mentioned detection fixture structure, can quickly and accurately detect the performance of the linear displacement sensor, such as accuracy, linearity, and repeatability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure provided in Embodiment 1 of this utility model.

[0016] Figure 2 This is a schematic diagram of the main structure provided in Embodiment 2 of this utility model.

[0017] Figure 3 This is a schematic diagram of the connection structure between the driving arc plate and the sliding platform provided in Embodiment 2 of this utility model.

[0018] The following are the labels in the diagram: 1. Base; 2. Drive shaft; 3. Drive mechanism; 4. Standard displacement measuring device; 5. Linear displacement sensor; 6. Guide rail; 7. Digital displacement display; 8. Sliding platform; 81. Drive hole; 82. Drive arc plate; 83. Hydraulic rod; 9. Return spring. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0020] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Example 1, please refer to Figure 1 A testing fixture for a linear displacement sensor includes a base 1, a guide rail 6, a linear displacement sensor 5, and a standard displacement measuring device 4. The base 1 is provided with the guide rail 6, and the guide rail 6 is provided with a sliding platform 8 that can slide back and forth. The standard displacement measuring device 4 is installed on the sliding platform 8 and is used to measure the actual displacement of the sliding platform 8 as a benchmark for testing. The linear displacement sensor 5 is located on one side of the sliding platform 8.

[0023] In this embodiment, the base 1 is provided with a rotatable drive shaft 2, which is used to drive the sliding platform 8 to move linearly. The drive shaft 2 is set in the guide rail 6 and is provided with a drive thread. The sliding platform 8 is provided with a drive hole 81 for the drive shaft 2 to pass through, and the drive hole 81 is provided with a thread groove that matches the drive thread.

[0024] In this embodiment, the base 1 is provided with a drive mechanism 3 for driving the drive shaft 2 to rotate. The drive mechanism 3 includes a stepper motor, a servo motor or a manually adjustable screw, for precisely controlling the displacement of the sliding mechanism.

[0025] In this embodiment, the linear displacement sensor 5 is equipped with a displacement display 7 for displaying displacement values. The displacement reading of the linear displacement sensor 5 can be displayed through the displacement display 7; by comparing the reading of the displacement display 7 with the reference value, the accuracy, linearity, repeatability, and other performance characteristics of the linear displacement sensor 5 can be quickly and accurately detected.

[0026] In this embodiment, the standard displacement measuring device 4 is one of a high-precision grating ruler, a laser displacement sensor, or a capacitive displacement sensor.

[0027] In this embodiment, the base 1 is provided with a fixing mechanism for mounting and fixing the linear displacement sensor 5. The fixing mechanism can adopt any existing fixing method, such as threaded extrusion fixing, which is prior art, so this application will not describe it in detail.

[0028] Example 2 is the same as Example 1, so the details will not be described again. The difference from Example 1 is: Please refer to... Figure 2 and Figure 3 In this embodiment, the drive hole 81 is provided with symmetrically distributed and semi-circular drive arc plates 82, the threaded groove is provided on the inner wall of the drive arc plate 82, the inner wall of the drive hole 81 is provided with a fixedly connected hydraulic rod 83, the hydraulic rod 83 is connected and fixed to the drive arc plate 82, and the guide rail 6 is also provided with a reset spring 9 for driving the sliding platform 8 to return to the initial position.

[0029] In this embodiment, when the sliding platform 8 moves to the set position and completes the detection, it is only necessary to control the threaded groove and thread in the drive arc plate 82 to separate through the hydraulic rod 83. At this time, the sliding platform 8 is no longer restricted. Under the action of the return spring 9, the sliding platform 8 can quickly return to the initial position, so that the second detection can be performed quickly. This design can change the original method of conveying by rotating the drive shaft 2. Compared with the method of conveying by rotating the drive shaft 2, the sliding platform 8 can return to the initial position more quickly, thus improving efficiency.

[0030] Furthermore, during the process of the sliding platform 8 returning to its initial position, due to inertia, the sliding platform 8 will compress the return spring 9 to contract, so that the threaded groove is located at one end of the drive thread. In this way, the return spring 9 can keep the drive arc plate 82 pressed against the drive thread, so that the drive thread can connect with the threaded groove more quickly under the rotation of the drive shaft 2.

[0031] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

Claims

1. A detection fixture for a linear displacement sensor, characterized in that: The device includes a base, a guide rail, a linear displacement sensor, and a standard displacement measuring device. The base is equipped with a guide rail, and the guide rail has a sliding platform that can slide back and forth. The standard displacement measuring device is installed on the sliding platform and is used to measure the actual displacement of the sliding platform. The linear displacement sensor is located on one side of the sliding platform.

2. The detection fixture for the linear displacement sensor according to claim 1, characterized in that: The base is provided with a rotatable drive shaft, which is used to drive the sliding platform to move linearly. The drive shaft is set in the guide rail and has a drive thread. The sliding platform is provided with a drive hole for the drive shaft to pass through, and the drive hole has a thread groove that matches the drive thread.

3. The detection fixture for the linear displacement sensor according to claim 2, characterized in that: The base is equipped with a drive mechanism for rotating the drive shaft.

4. The detection fixture for the linear displacement sensor according to claim 2, characterized in that: The drive hole is provided with symmetrically distributed, semi-circular drive arc plates. The threaded groove is provided on the inner wall of the drive arc plate. The inner wall of the drive hole is provided with a hydraulic rod that is fixedly connected to the drive arc plate. The hydraulic rod is fixedly connected to the drive arc plate. The guide rail is also provided with a reset spring for driving the sliding platform to return to its initial position.

5. The detection fixture for the linear displacement sensor according to claim 1, characterized in that: The linear displacement sensor is equipped with a displacement display for displaying displacement values.

6. The detection fixture for the linear displacement sensor according to claim 1, characterized in that: The standard displacement measuring device is one of the following: a high-precision grating ruler, a laser displacement sensor, or a capacitive displacement sensor.

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