A laser displacement sensor testing device

Abstract

This utility model discloses a laser displacement sensor testing device, comprising: a U-shaped disk, a motor fixedly installed inside the U-shaped disk, a placement tray fixedly installed on the upper surface of the motor's output shaft, a fastening ring fixedly installed inside the U-shaped disk, the fastening ring slidingly sleeved on the outer surface of the placement tray and forming a sliding groove with the U-shaped disk, and a connecting column slidingly installed in a damped manner inside the sliding groove, a hollow tube fixedly installed at one end of the outer surface of the connecting column, and a laser displacement sensor testing mechanism slidably installed on the outer surface of the hollow tube. This application, through the design of the laser displacement sensor testing mechanism, enables flexible adjustment of the detection angle, and through a combination of height adjustment and angle adjustment, allows the laser displacement sensor to complete vertical sweeping and multi-angle tilt detection. It can adapt to measurement areas of different heights and accurately scan complex shapes such as inclined surfaces and curved surfaces of the measured object, significantly improving the adaptability and comprehensiveness of the detection.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing technology, specifically a laser displacement sensor testing device. Background Technology

[0002] In the process of industrial intelligent development, accurate detection and efficient quality control are key links to ensure production efficiency and improve product quality. Laser displacement sensors, with their advantages of non-contact operation, high precision, and fast response, play a central role in scenarios such as object surface inspection, dimensional measurement, and position monitoring.

[0003] For example, the national authorized patent announcement number CN222579326U discloses a proximity sensor testing device. This proximity sensor testing device includes a substrate, a positioning stage fixedly connected to the upper surface of the substrate, a support block fixedly connected to the upper surface of the positioning stage, and a top cover plate fixedly connected to the upper surface of the support block. A clamping mechanism is provided above the positioning stage, and a drive motor is fixedly mounted on the upper surface of the top cover plate. The output end of the drive motor passes through the top cover plate and is fixedly connected to a drive wheel. This proximity sensor testing device, through the clamping mechanism, facilitates the installation and removal of proximity sensors, avoiding situations where the proximity sensor cannot be removed after installation and testing. Furthermore, the adjustment components within the clamping mechanism allow it to accommodate proximity sensors of different diameters, effectively increasing the applicability of this application.

[0004] However, the aforementioned proximity sensor testing device cannot perform multi-dimensional testing of the test object, nor can it rotate or displace the position of the measured object during the testing process. It can only fix the detection in a single direction or position, which means that it can only be adapted to test objects with simple structures and simple testing requirements. When faced with complex workpieces, it cannot meet the testing requirements at all, which will lead to a significant reduction in the practicality of the testing results. Utility Model Content

[0005] The purpose of this invention is to provide a laser displacement sensor testing device to solve the problems mentioned in the background art, such as the inability of the aforementioned sensor testing device to perform multi-dimensional detection of the tested object, the inability to realize the rotation and displacement adjustment of the measured object, and the resulting limitations in the detection scenario, incomplete data, and disconnection from actual working conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A laser displacement sensor testing device includes: a U-shaped disk, a motor fixedly installed inside the U-shaped disk, a placement tray fixedly installed on the upper surface of the output shaft of the motor, a standard test piece that can be placed on the upper surface of the placement tray, a fastening ring fixedly installed inside the U-shaped disk, the fastening ring slidingly sleeved on the outer surface of the placement tray and forming a sliding groove with the U-shaped disk, a connecting column slidingly installed in a damped manner in the sliding groove, a hollow tube fixedly installed at one end of the outer surface of the connecting column, and a laser displacement sensor testing mechanism slidably installed on the outer surface of the hollow tube.

[0008] Preferably, a fastening plate is fixedly installed at one end of the outer surface of the connecting column. The fastening plate slides against the upper surface of the fastening ring and can be threadedly fastened to the upper surface of the fastening ring by a wing bolt.

[0009] Preferably, the laser displacement sensor testing mechanism includes a four-way tube, which is damped and slidably installed on the outer surface of a hollow tube. A connecting rod is vertically inserted into the four-way tube, and a connecting plate is fixedly installed on the upper surface of the connecting rod. Connecting arms are rotatably installed at both ends of the outer surface of the connecting plate, and a concave plate is rotatably installed at the other end of the connecting arm. A laser displacement sensor can be screwed into the concave plate through a threaded groove.

[0010] Preferably, a wing bolt is threaded onto one end of the four-way pipe, and the threaded portion of the wing bolt can thread through the hollow pipe and abut against the outer surface of the connecting rod, thereby locking the position of the connecting rod that slides into the four-way pipe.

[0011] Preferably, an electric push rod is rotatably mounted on one end of the connecting plate, and the piston rod of the electric push rod is rotatably connected to one end of the lower surface of the concave plate.

[0012] Preferably, this enables the electric push rod to push and pull the concave plate through the extension and retraction of the piston rod, thereby causing the laser displacement sensor to flip up or down within the connecting arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This device, through the adjustable structure (fastening ring, sliding groove, connecting column, etc.) of multiple laser displacement sensor testing mechanisms, achieves flexible adjustment of sensor spacing and position, adapting to the testing needs of test pieces of different specifications. Combined with the combined actions of motor-driven rotation of the placement disk, up-and-down sweeping of the testing mechanism, and angle adjustment, it can complete 360° radial scanning of the test piece, layer-by-layer scanning at different heights, and multi-angle contour measurement, achieving comprehensive detection of multiple parameters such as flatness, roughness, and defects. At the same time, through dynamic performance testing design, it improves the matching degree between the test results and actual working conditions, significantly enhancing the flexibility, comprehensiveness, and accuracy of the testing.

[0015] 2. Utilizing a sliding adjustment structure with a four-way tube and connecting rod, the laser displacement sensor achieves flexible height adjustment in both the axial and vertical directions, while a wing bolt locks in place to ensure stable positioning. Combined with an angle adjustment design that uses an electric push rod to drive the concave plate to rotate, the sensor can flexibly change its detection angle. This combined design of height and angle adjustment allows the sensor to adapt to scanning requirements of measurement areas of varying heights and complex shapes such as inclined surfaces and curved surfaces, significantly improving the adaptability and accuracy of the inspection mechanism for complex-shaped measurement objects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the storage tray and fastening ring of this utility model;

[0018] Figure 3 This is a schematic diagram of the four-way pipe and connecting rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the concave plate and laser displacement sensor of this utility model.

[0020] In the diagram: 1. U-shaped disc; 101. Fastening ring; 102. Sliding groove; 103. Connecting column; 104. Fastening plate; 105. Hollow tube; 106. Storage tray; 107. Motor; 2. Laser displacement sensor testing mechanism; 201. Four-way tube; 202. Laser displacement sensor; 203. Connecting rod; 204. Connecting disc; 205. Connecting arm; 206. Electric push rod; 207. Concave plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This embodiment provides a laser displacement sensor testing device, including: a U-shaped disk 1, a motor 107 fixedly installed inside the U-shaped disk 1, a placement tray 106 fixedly installed on the upper surface of the output shaft of the motor 107, the upper surface of the placement tray 106 being capable of placing a standard test piece, a fastening ring 101 fixedly installed inside the U-shaped disk 1, the fastening ring 101 slidingly sleeved on the outer surface of the placement tray 106 and forming a sliding groove 102 between the fastening ring 101 and the U-shaped disk 1, and a connecting column 103 being damped and slidably installed in the sliding groove 102, a hollow tube 105 fixedly installed on one end of the outer surface of the connecting column 103, and a laser displacement sensor testing mechanism 2 slidably installed on the outer surface of the hollow tube 105. A fastening plate 104 is fixedly installed on one end of the outer surface of the connecting column 103, the fastening plate 104 slidingly abutting the upper surface of the fastening ring 101 and being threadedly fastened to the upper surface of the fastening ring 101 by a wing bolt.

[0023] Through the design of the fastening ring 101, sliding groove 102, connecting column 103, hollow tube 105, storage tray 106, motor 107, and laser displacement sensor testing mechanism 2, during sensor testing, the sensor can be threaded into multiple sets of laser displacement sensor testing mechanisms 2. These multiple sets of laser displacement sensor testing mechanisms 2 can then slide and adjust their spacing and position within the sliding groove 102 via the connecting column 103. Once the position is determined, the fastening plate 104, fixedly mounted on the outer surface of the connecting column 103, can be threaded onto the upper surface of the fastening ring 101 using wing bolts for position locking. Subsequently, the standard part to be tested can be placed on the surface of the storage tray 106, and the motor 107 can be started. The motor 107 drives the storage tray 106, causing the tested part to rotate accordingly. This allows the tested part to be scanned by the sensors installed in the laser displacement sensor testing mechanism 2 at different radii. During the rotation of the disk 106, the laser displacement sensor testing mechanism 2 can be activated simultaneously, driving the sensor to perform upward or downward sweeping operations. This allows the laser beam emitted by the sensor to reach the surface being measured. The reflected light is focused onto the CCD receiver by the optical system. Based on the positional offset of the reflection point on the receiver, the distance is calculated using the trigonometric geometric relationship L = xd·f, where L is the measurement distance, d is the distance between the emission point and the receiver, f is the focal length of the receiving lens, and x is the positional offset of the reflected light. Through the combination of the rotation of the disk 106, the up-and-down sweeping of the laser displacement sensor testing mechanism 2, and angle adjustment, the test piece can achieve 360° radial scanning of its entire circumference, layer-by-layer scanning at different heights, and contour measurement from multiple angles. Finally, the data processing system generates a three-dimensional topography image, completing the detection of multiple parameters such as flatness, roughness, and defects, and realizing dynamic performance testing, thereby improving the matching degree between the test results and actual working conditions.

[0024] like Figures 3-4As shown, the laser displacement sensor testing mechanism 2 includes a four-way tube 201, which is damped and slidably installed on the outer surface of the hollow tube 105. A connecting rod 203 is vertically inserted into the four-way tube 201. A connecting plate 204 is fixedly installed on the upper surface of the connecting rod 203. Connecting arms 205 are rotatably installed at both ends of the outer surface of the connecting plate 204. A concave plate 207 is rotatably installed at the other end of the connecting arm 205. A laser displacement sensor 202 can be screwed into the concave plate 207 through a threaded groove. A wing bolt is threaded onto one end of the four-way tube 201, and the threaded part of the wing bolt can thread through the hollow tube 105 and abut against the outer surface of the connecting rod 203, thereby locking the position of the connecting rod 203 slidably inserted into the four-way tube 201. An electric push rod 206 is rotatably installed on one end of the connecting plate 204. The piston rod of the electric push rod 206 is rotatably connected to one end of the lower surface of the concave plate 207. This allows the electric push rod 206 to push and pull the concave plate 207 through the extension and retraction of the piston rod, thereby causing the laser displacement sensor 202 to rotate upward or downward within the connecting arm 205.

[0025] Through the design of the four-way pipe 201, laser displacement sensor 202, connecting rod 203, connecting plate 204, connecting arm 205, electric push rod 206, and concave plate 207, when testing the laser displacement sensor 202, the laser displacement sensor 202 can be screwed into the concave plate 207. During this process, the four-way pipe 201, which is slidably mounted on the outer surface of the hollow tube 105, can slide freely along the axial direction of the hollow tube 105, thereby driving the entire laser displacement sensor testing mechanism 2 to adjust its axial position. Furthermore, the connecting rod 203 can also drive the entire laser displacement sensor testing mechanism 2 to adjust its vertical height within the four-way pipe 201. After adjustment, the wing bolt at one end of the four-way pipe 201 can be used to contact the sensor. The height is locked on the outer surface of the connecting rod 203 to ensure stable position after sliding adjustment. When the laser displacement sensor 202 scans the workpiece, the electric push rod 206 can be activated to extend and retract the piston rod, which will push and pull the concave plate 207 to rotate upward or downward with the connecting arm 205 as the fulcrum. This will drive the laser displacement sensor 202 installed in the concave plate 207 to rotate synchronously, thus realizing flexible adjustment of the detection angle. Through the combination of height adjustment and angle adjustment, the laser displacement sensor 202 can complete the vertical sweep and multi-angle tilt detection. It can adapt to the test area at different heights and accurately scan the complex shape of the workpiece such as the inclined surface and curved surface, which greatly improves the adaptability and comprehensiveness of the detection.

[0026] Based on the above technical solution, the working steps of this solution are summarized as follows: When testing the laser displacement sensor 202, the laser displacement sensor 202 can be screwed into the concave plate 207. During this process, the four-way pipe 201, which is slidably installed on the outer surface of the hollow tube 105, can slide freely along the axial direction of the hollow tube 105, thereby driving the entire laser displacement sensor testing mechanism 2 to adjust its axial position. During this process, the connecting rod 203 can also drive the entire laser displacement sensor testing mechanism 2 to adjust its vertical height within the four-way pipe 201. After adjustment, the height position can be locked by the wing bolt at one end of the four-way pipe 201 against the outer surface of the connecting rod 203, ensuring the stability of the adjusted position. Then, the standard part to be tested can be placed on the surface of the tray 106 and the motor 107 can be started. The motor 107 can drive the tray 106 and rotate the tested part accordingly, thus allowing the tested part to be rotated at different radii by the laser displacement sensor 202. During the scanning process, the electric push rod 206 can be activated simultaneously during the rotation of the tray 106 to extend and retract the piston rod. This pushes and pulls the concave plate 207, which rotates upward or downward using the connecting arm 205 as a fulcrum. This, in turn, drives the laser displacement sensor 202 installed in the concave plate 207 to perform upward or downward sweeping operations. The emitted laser beam reaches the surface being measured, and the reflected light is focused onto the CCD receiver by the optical system. Based on the position offset of the reflection point on the receiver, the distance is calculated using the trigonometric geometric relationship L = xd·f, where L is the measurement distance, d is the distance between the emission point and the receiver, f is the focal length of the receiving lens, and x is the position offset of the reflected light. Through the combination of the rotation of the tray 106, the up-and-down sweeping of the laser displacement sensor 202, and the angle adjustment, the radial scanning of the entire 360° circumference of the measured part, the layer-cutting scanning at different heights, and the contour measurement at multiple angles can be achieved. Finally, the data processing system generates a three-dimensional topography image, completing the detection of multiple parameters such as flatness, roughness, and defects, and realizing dynamic performance testing.

[0027] In summary, by flexibly adjusting the detection angle and combining height and angle adjustment, the laser displacement sensor 202 can perform vertical sweeping and multi-angle tilt detection. It can adapt to the measured area at different heights and accurately scan complex shapes such as inclined surfaces and curved surfaces of the measured parts, greatly improving the adaptability and comprehensiveness of the detection.

[0028] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser displacement sensor testing apparatus characterized by, include: A U-shaped disk (1) is provided, in which a motor (107) is fixedly installed. A storage tray (106) is fixedly installed on the upper surface of the output shaft of the motor (107). A standard test piece can be placed on the upper surface of the storage tray (106). A fastening ring (101) is fixedly installed in the U-shaped disk (1). The fastening ring (101) is slidably sleeved on the outer surface of the storage tray (106) and forms a sliding groove (102) between it and the U-shaped disk (1). A connecting column (103) is slidably installed in the sliding groove (102). A hollow tube (105) is fixedly installed on one end of the outer surface of the connecting column (103). A laser displacement sensor testing mechanism (2) is slidably installed on the outer surface of the hollow tube (105).

2. A laser displacement sensor testing device according to claim 1, wherein: A fastening plate (104) is fixedly installed on one end of the outer surface of the connecting column (103). The fastening plate (104) slides against the upper surface of the fastening ring (101) and can be fastened to the upper surface of the fastening ring (101) by means of a wing bolt thread.

3. The laser displacement sensor testing device of claim 1, wherein: The laser displacement sensor testing mechanism (2) includes a four-way tube (201), which is damped and slidably installed on the outer surface of a hollow tube (105). A connecting rod (203) is vertically inserted into the four-way tube (201). A connecting plate (204) is fixedly installed on the upper surface of the connecting rod (203). Connecting arms (205) are rotatably installed at both ends of the outer surface of the connecting plate (204). A concave plate (207) is rotatably installed at the other end of the connecting arm (205). A laser displacement sensor (202) can be screwed into the concave plate (207) through a threaded groove.

4. A laser displacement sensor testing apparatus according to claim 3, wherein: One end of the four-way tube (201) is threaded with a wing bolt, and the threaded part of the wing bolt can thread through the hollow tube (105) and abut against the outer surface of the connecting rod (203), thereby locking the position of the connecting rod (203) that slides into the four-way tube (201).

5. A laser displacement sensor testing apparatus according to claim 4, wherein: An electric push rod (206) is rotatably mounted on one end of the connecting plate (204), and the piston rod of the electric push rod (206) is rotatably connected to one end of the lower surface of the concave plate (207).

6. A laser displacement sensor testing device according to claim 5, wherein: The electric push rod (206) can push and pull the concave plate (207) by extending and retracting the piston rod, thereby causing the laser displacement sensor (202) to flip up or down within the connecting arm (205).

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