Position sensor detection tool

Abstract

The invention relates to the technical field of sensor detection equipment, in particular to a position sensor detection tool which comprises a base, a bottom plate, a rocker arm, targets, mounting plates and an angle plate, the bottom plate is mounted on the base, the rocker arm is hinged to a floor, the targets are arranged on the two sides of the middle of the rocker arm, the mounting plates are arranged on the bottom plate and located on the two sides of the rocker arm, and the angle plate is arranged on the mounting plates. The mounting plate is provided with a mounting hole used for mounting a position sensor, the projection of the target on the vertical plane passes through the position of the mounting hole when the target rotates along with the rocker arm, the angle plate is mounted on the side, away from the bottom plate, of the base, and the angle plate is provided with angle scales corresponding to the end, away from a hinge point, of the rocker arm. The integrated operation of completing installation and detection through one-time clamping is achieved, and the problems of low operation efficiency, secondary positioning errors and the like caused by dispersed installation and detection procedures are solved.

Description

Technical Field

[0001] This invention relates to the field of sensor detection equipment technology, and in particular to a position sensor detection fixture. Background Technology

[0002] In aerospace manufacturing and other fields, position sensors and proximity switches are core detection components, and their assembly accuracy and performance stability directly determine the operational reliability of end-user equipment. These sensors are characterized by their small size, high accuracy requirements, and large-scale production needs. The assembly and performance testing processes are highly dependent on specialized tooling. To ensure the accuracy of position sensor testing, and considering the future development direction of position sensor product lines, it is crucial to design and manufacture testing fixtures suitable for the process debugging and performance testing of similar products within the position sensor series. Existing position sensor tooling suffers from problems such as low positioning accuracy, insufficient stability, and poor consistency. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides a position sensor detection fixture.

[0004] This invention discloses the following technical solution: a position sensor detection fixture, comprising a base, a base plate, a rocker arm, a target, a mounting plate, and an angle plate. The base plate is mounted on the base, the rocker arm is hinged to the floor, and targets are provided on both sides of the middle position of the rocker arm. The base plate is provided with mounting plates located on both sides of the rocker arm, and the mounting plates are provided with mounting holes for mounting position sensors. When the rocker arm rotates, the projection of the target on the vertical plane passes through the position of the mounting holes. The angle plate is mounted on the side of the base away from the base plate, and the angle plate is provided with angle scales corresponding to the end of the rocker arm away from the hinge point.

[0005] Furthermore, the base, bottom plate, and mounting plate are all made of high-hardness aluminum alloy, specifically 2A12-T4 material, with surface treatment of chromic acid anodizing. This ensures dimensional stability, high tensile strength, and prevents warping and deformation under stress.

[0006] Furthermore, the rocker arm is made of 2A14-T6 material and has a surface treatment of chromic acid anodizing.

[0007] Furthermore, the target is made of 0Cr15NiCu4Nb material, heat-treated to HRC30-37, with high hardness and a smooth surface, making it resistant to deformation.

[0008] Furthermore, the rocker arm is equipped with a pointer pointing to an angle scale.

[0009] Furthermore, the angle scale value ranges from 0 to 30°, and the scale accuracy is 0.5°.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: Improved accuracy: The angle is read by the cooperation of the rocker arm and the angle plate, with an accuracy of 0.5°, which greatly meets the accuracy assembly requirements of the technical documents; Efficiency Improvement: Enables integrated operation of "one-time clamping, installation + testing", solving problems such as low operation efficiency and secondary positioning error caused by the separation of installation and testing processes. Adapts to mass production, realizes rapid positioning and installation of sensors, and improves assembly accuracy and calibration efficiency.

[0011] High stability: The high-hardness aluminum alloy base and mounting plate have strong anti-interference ability in vibration environment, ensuring data reliability; High convenience: It can simulate actual motion trajectory, simplify the trajectory modeling, and process simplified tooling, which greatly improves convenience. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation of the position sensor of the present invention.

[0013] In the diagram: 1. Base plate; 2. Rocker arm; 3. Target; 4. Mounting plate; 5. Angle plate; 6. Position sensor; 7. Pointer; 8. Angle scale 601. Detailed Implementation

[0014] like Figures 1 to 2 As shown, a position sensor detection fixture includes a base 1, a base plate 2, a rocker arm 3, a target 4, a mounting plate 5, and an angle plate 6. The base plate 2 is mounted on the base 1. The rocker arm 3 is hinged to the floor. Targets 4 are provided on both sides of the middle position of the rocker arm 3. The mounting plate 5 is provided on the base plate 2 on both sides of the rocker arm 3. The mounting plate 5 has mounting holes for mounting position sensors 7. When the target 4 rotates with the rocker arm 3, its projection on the vertical plane passes through the position of the mounting holes. The angle plate 6 is mounted on the side of the base 1 away from the base plate 2. The angle plate 6 has an angle scale 601 corresponding to the end of the rocker arm 3 away from the hinge point. The rocker arm 3 has a pointer 8 pointing to the angle scale 601. The angle scale 601 has a value range of 0 to 30° and a scale accuracy of 0.5°.

[0015] The base 1, base plate 2, and mounting plate 5 are all made of high-hardness aluminum alloy, specifically 2A12-T4 material, with a chromate anodizing surface treatment. This allows for repeated aging treatments to eliminate residual stress, resulting in dimensional stability, high tensile strength, and resistance to warping and deformation under load. The rocker arm 3 is made of 2A14-T6 material with a chromate anodizing surface treatment. The target 4 is made of 0Cr15NiCu4Nb material, heat-treated to HRC30-37, exhibiting high hardness and a smooth surface, making it resistant to deformation.

[0016] Working principle: When rocker arm 3 is fully extended, pointer 8 points to 0°, and position sensor 7 and target 4 are kept at zero position. The angle α between target 4 and sensor axis X is adjusted by rocker arm 3. Figure 2 As shown, when α increases, the projected area of ​​the sensing end face of position sensor 7 and the end face of metal target 4 decreases, the magnetic reluctance of the magnetic circuit increases, and the inductance of the coil inside the probe decreases. Position sensor 7 is connected to the detection circuit, which identifies the position state of target 4 by detecting changes in inductance and indicates the position state of target 4 with discrete switching signals.

[0017] In use, position sensor 7 is installed at the mounting hole of mounting plate 5. By rotating the nut on position sensor 7, the distance between position sensor 7 and target 4 is adjusted to 2 + 0.20 mm. Tighten the nut on position sensor 7 to fix position sensor 7 on the fixture. The detection circuit is connected to a regulated power supply. By adjusting the rotation angle of rocker arm 3, the output level of position sensor 7 and target 4 is tested in the near and far states. The detection performance of position sensor 7 is judged based on the output level. Mounting plates 5 are provided on both the left and right sides of rocker arm 3, allowing position sensor 7 to be installed and calibrated simultaneously.

[0018] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A position sensor detection fixture, characterized in that: The device includes a base (1), a base plate (2), a rocker arm (3), a target (4), a mounting plate (5), and an angle plate (6). The base plate (2) is mounted on the base (1). The rocker arm (3) is hinged to the floor. Targets (4) are provided on both sides of the middle position of the rocker arm (3). The mounting plate (5) is located on both sides of the rocker arm (3) on the base plate (2). The mounting plate (5) has mounting holes for mounting position sensors (7). When the target (4) rotates with the rocker arm (3), its projection on the vertical plane passes through the mounting holes. The angle plate (6) is mounted on the side of the base (1) away from the base plate (2). Angle scales (601) are provided on the angle plate (6) and correspond to the end of the rocker arm (3) away from the hinge point.

2. The position sensor detection fixture according to claim 1, characterized in that: The base (1), bottom plate (2) and mounting plate (5) are all made of high-hardness aluminum alloy, specifically 2A12-T4 material, with surface treatment: chromic acid anodizing. The rocker arm (3) is made of 2A14-T6 material and has a surface treatment of chromic acid anodizing.

3. The position sensor detection fixture according to claim 1, characterized in that: The target (4) is made of 0Cr15NiCu4Nb material and heat-treated to HRC30-37.

4. The position sensor detection fixture according to claim 1, characterized in that: The rocker arm (3) is equipped with a pointer (8) pointing to an angle scale (601).

5. The position sensor detection fixture according to claim 1, characterized in that: The angle scale (601) value ranges from 0 to 30°, and the scale accuracy is 0.5°.

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