An axial optical detection device

Abstract

The present invention relates to the technical field of detection equipment, and proposes an optical detection equipment for shafts, including a measurement table, which is a transparent plate and is provided with a light source at its bottom; two support seats, which are slidably arranged on the measurement table along a first direction; an industrial camera, which is slidably arranged on the measurement table along the first direction and is located above the support seats; a laser rangefinder, which is slidably arranged on the measurement table along the first direction and is located on one side of the support seats; and a computer, which is connected to both the laser rangefinder and the industrial camera. Through the above technical solution, the problems of large error and low efficiency in manual shaft detection in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and more specifically, to an optical detection equipment for shafts. Background Art

[0002] Shaft parts are extremely common and very important parts in the machinery industry; their shape error accuracy directly affects the motion performance and service life of the machinery. With the development of the machinery industry, the requirements for shaft parts are getting higher and higher, and there are more and more production enterprises engaged in the production of shafts. To avoid being eliminated in the fierce competition, the primary task is to control the product quality accuracy. When detecting parts, the traditional detection method is to conduct spot checks by using pure manual vision detection or a method combining manual vision with mechanical measuring tools and optical instruments. Manual detection often has disadvantages such as low efficiency, poor reliability, low detection accuracy, and high costs; in addition, when using industrial cameras for detection, the detection accuracy is not high, the detection data is not stable enough, it is greatly affected by external light, and the detection speed is slow. Therefore, the existing detection methods and equipment can no longer meet the needs of modern industrial development. Summary of the Invention

[0003] The present invention provides an optical detection equipment for shafts, which solves the problems of large errors and low efficiency in manual shaft detection in the prior art.

[0004] The technical solution of the present invention is as follows:

[0005] An optical detection equipment for shafts, comprising:

[0006] A measuring table, which is a transparent plate and is provided with a light source at its bottom;

[0007] Two support seats, which are slidably arranged on the measuring table along a first direction;

[0008] An industrial camera, which is slidably arranged on the measuring table along the first direction and is located above the support seats;

[0009] A laser rangefinder, which is slidably arranged on the measuring table along the first direction and is located on one side of the support seats;

[0010] A computer, which is connected to both the laser rangefinder and the industrial camera.

[0011] Furthermore, it further includes a first positioning plate, which is arranged on the measuring table and is opposite to the laser rangefinder.

[0012] Furthermore, the measuring table is provided with a first slide rail along the first direction, and a plurality of sliding seats are slidably arranged on the first slide rail, and both the support seats and the laser rangefinder are arranged on the sliding seats.

[0013] Further, there are two first slide rails, which are respectively arranged on both sides of the measuring table along the first direction. The sliding seat includes:

[0014] Two first sliders, and two first sliders are slidably arranged on the two first slide rail tracks;

[0015] A connecting arm that connects the two first sliders;

[0016] Both the support seat and the laser rangefinder are arranged on the connecting arm.

[0017] Further, a bracket is provided on the measuring table, a cross beam is provided on the bracket, a second slide rail and a scale along the first direction are provided on the cross beam, a second slider is slidably arranged on the second slide rail, and the industrial camera is arranged on the second slider.

[0018] Further, a locking mechanism is provided on the first slider. The locking mechanism includes:

[0019] Two rotating arms, which are respectively located on both sides of the first slide rail. The middle of the rotating arm is rotatably arranged on the first slider, and a friction pad and a sliding pad for contacting the first slide rail are respectively provided at both ends of the rotating arm;

[0020] A spring that provides an elastic force to make the sliding pad close to the first slide rail;

[0021] A bidirectional screw rod that is rotatably arranged on the first slider;

[0022] Nuts, including a first nut and a second nut, are both slidably arranged on the first slider, and the first nut and the second nut are respectively threadedly engaged with both ends of the bidirectional screw rod;

[0023] A push plate. Push plates are provided on both the first nut and the second nut for pushing the friction pad close to the first slide rail.

[0024] Further, it further includes a second positioning plate. The second positioning plate is slidably arranged on the measuring table, and both the first positioning plate and the second positioning plate are rotatably arranged.

[0025] Further, both the first positioning plate and the second positioning plate are rotatably arranged on the measuring table through a ratchet structure.

[0026] Further, an induction sensor is further provided on the support seat for detecting whether a shaft is placed on the support seat.

[0027] Further, it further includes an alarm lamp. The alarm lamp is connected to the computer.

[0028] The working principle and beneficial effects of the present invention are:

[0029] 1. An axial optical detection device. When performing detection, first, it is necessary to measure a standard shaft with known parameters. Place the standard shaft on the support base, collect the image of the standard shaft through an industrial camera, input it into a computer for processing to obtain the parameters required in the solution model. Then, place the shaft to be measured on two support bases, requiring the installation position to be the same as that of the standard shaft. Use the industrial camera to collect the image of the shaft to be measured, and the posture of the industrial camera should also be the same as when measuring the standard shaft. Input the obtained image into the computer for processing. According to the above parameters, obtain the diameter of the shaft to be measured through the solution model, and the length of the shaft to be measured can be measured by a laser rangefinder. It can detect the length and diameter of the shaft to be measured simultaneously, effectively improving the detection efficiency and detection accuracy. And by sliding the support base, shafts of different lengths can be placed. By sliding the positions of the industrial camera and the laser rangefinder, it can adapt to the detection of shafts of different lengths and thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0031] Figure 1 It is a schematic structural diagram of the detection device;

[0032] Figure 2 It is a front view of the detection device;

[0033] Figure 3 It is a schematic structural diagram of the locking mechanism;

[0034] In the figure: 1 measuring table, 2 support base, 3 industrial camera, 4 laser rangefinder, 5 first positioning plate, 6 first slide rail, 7 first slider, 8 connecting arm, 9 bracket, 10 cross beam, 11 second slide rail, 12 second slider, 13 rotating arm, 14 friction pad, 15 sliding pad, 16 spring, 17 bidirectional screw, 18 first nut, 19 second nut, 20 push plate, 21 second positioning plate, 22 induction sensor, 23 alarm lamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present invention.

[0036] As Figures 1 to 3 shown, this embodiment proposes

[0037] An axial optical detection device, comprising:

[0038] The measuring table 1 is a transparent plate with a light source at its bottom;

[0039] There are two supporting seats 2, which are slidably arranged on the measuring table 1 along the first direction;

[0040] The industrial camera 3 is slidably arranged on the measuring table 1 along the first direction and is located above the supporting seat 2;

[0041] The laser rangefinder 4 is slidably arranged on the measuring table 1 along the first direction and is located on one side of the supporting seat 2;

[0042] The computer is connected to both the laser rangefinder 4 and the industrial camera 3.

[0043] The first direction is the length direction after the shaft to be measured is placed on the two supporting seats 2. When performing detection, first, it is necessary to measure the known parameter standard shaft. Place the standard shaft on the supporting seat 2, collect the image of the standard shaft through the industrial camera 3, input it into the computer for processing, and obtain the parameters required in the solution model. Then place the shaft to be measured on the two supporting seats 2, requiring the installation position to be the same as that of the standard shaft. Use the industrial camera 3 to collect the image of the shaft to be measured, and the posture of the industrial camera 3 should also be the same as that when measuring the standard shaft. Input the obtained image into the computer for processing. According to the above parameters, obtain the diameter of the shaft to be measured through the solution model, and the length of the shaft to be measured can be measured by the laser rangefinder 4. The length and diameter of the shaft to be measured can be detected simultaneously, effectively improving the detection efficiency and detection accuracy. And different lengths of shafts can be placed through the sliding of the supporting seat 2, and by sliding the positions of the industrial camera 3 and the laser rangefinder 4, it is suitable for detecting shafts of different lengths and thicknesses.

[0044] It further includes a first positioning plate 5, and the first positioning plate 5 is arranged on the measuring table and is opposite to the laser rangefinder 4.

[0045] When measuring the length of the shaft, first measure the distance between it and the first positioning plate 5 through the laser rangefinder 4, then place the shaft on the supporting seat 2, one end face of the shaft contacts the first positioning plate 5, and measure the distance between it and the other end face of the shaft through the laser rangefinder 4. Calculate the length of the shaft according to the two measured distances.

[0046] There is a first slide rail 6 along the first direction on the measuring table 1. A plurality of sliding seats are slidably arranged on the first slide rail 6, and the supporting seat 2 and the laser rangefinder 4 are both arranged on the sliding seats.

[0047] There are two first slide rails 6, which are respectively arranged on both sides of the measuring table 1 along the first direction. The sliding seat includes:

[0048] There are two first sliders 7, and the two first sliders 7 are slidably arranged on the two first slide rail 6 tracks respectively;

[0049] The connecting arm 8 connects two first sliders 7;

[0050] Both the support base 2 and the laser rangefinder 4 are arranged on the connecting arm 8.

[0051] The support base 2 is arranged on the connecting arm 8 that spans the measuring table 1, reducing the area blocking the light source and reducing the impact on diameter measurement. By sliding the first slider 7, the support base 2 is driven to slide to adapt to the detection of shafts with different lengths.

[0052] A bracket 9 is provided on the measuring table 1. A cross beam 10 is provided on the bracket 9. A second slide rail 11 and a scale in the first direction are provided on the cross beam 10. A second slider 12 is slidably arranged on the second slide rail 11. The industrial camera 3 is arranged on the second slider 12.

[0053] The industrial camera 3 is slidably arranged on the second slide rail 11 of the cross beam 10 along with the second slider 12. The position of the slider can be conveniently determined through the scale, facilitating the adjustment of the position of the industrial camera 3. Multiple industrial cameras 3 can be designed and used according to the length of the shaft to be detected to ensure that the images of the entire shaft can be collected.

[0054] A locking mechanism is provided on the first slider 7. The locking mechanism includes:

[0055] Rotating arms 13, there are two of them, respectively located on both sides of the first slide rail 6. The middle part of the rotating arm 13 is rotatably arranged on the first slider 7. Friction pads 14 and sliding pads 15 for contacting the first slide rail 6 are respectively provided at both ends of the rotating arm 13;

[0056] A spring 16 provides an elastic force to make the sliding pad 15 approach the first slide rail 6;

[0057] A bidirectional screw 17 is rotatably arranged on the first slider 7;

[0058] Nuts, including a first nut 18 and a second nut 19, are both slidably arranged on the first slider 7. The first nut 18 and the second nut 19 are respectively threadedly engaged with both ends of the bidirectional screw 17;

[0059] Push plates 20 are provided on both the first nut 18 and the second nut 19, for pushing the friction pad 14 to approach the first slide rail 6.

[0060] When the first slider 7 slides on the first slide rail 6, the push plate 20 is not in contact with the rotating arm 13, and the spring 16 is in a compressed state. Under the action of the spring 16, the rotating arm 13 makes the sliding pad 15 contact with the first slide rail 6 to ensure the stability of the sliding process. When it is necessary to lock the first slider 7, rotate the bidirectional screw 17 to make the push plate 20 push the rotating arm 13, so that the friction pad 14 contacts the first slide rail 6 and is pressed tightly on the first slide rail 6 to fix the position of the slider. Using the bidirectional screw 17 can make the friction pads 14 on both sides move synchronously to ensure the stability of the force.

[0061] It further includes a second positioning plate 21, and the second positioning plate 21 is slidably arranged on the measuring table 1. Both the first positioning plate 5 and the second positioning plate 21 are rotatably arranged.

[0062] When measuring the shaft diameter, the first positioning plate 5 and the second positioning plate 21 clamp the shaft in the middle. Multiple attitude images of the shaft can be collected by rotating the shaft to improve the accuracy of shaft diameter measurement. When measuring the shaft length, subtracting the thickness of the second positioning plate 21 can obtain the shaft length. And setting the second positioning plate 21 can avoid the problem that the surface roughness of the shaft end is relatively high and the diffuse reflection situation is relatively serious, which affects the measurement accuracy.

[0063] Both the first positioning plate 5 and the second positioning plate 21 are rotatably arranged on the measuring table 1 through a ratchet structure.

[0064] Through the ratchet structure, fixation after angle adjustment can be realized to ensure that the clamping attitude is the same each time. And a dial is also arranged on the measuring table 1. The rotation angle of the rotating disk can be determined through the dial, which is convenient for adjustment.

[0065] An induction sensor 22 is also arranged on the support seat 2 for detecting whether a shaft is placed on the support seat 2.

[0066] It further includes an alarm lamp 23, and the alarm lamp 23 is connected to the computer.

[0067] According to whether the measurement result is within the allowable error range, the alarm lamp 23 lights different - colored lights for prompt, which is convenient for observation.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An axial optical detection device, characterized in that, it includes: A measurement table (1), which is a transparent plate and is provided with a light source at its bottom; Two support seats (2), which are slidably arranged on the measurement table (1) along a first direction; An industrial camera (3), which is slidably arranged on the measurement table (1) along the first direction and is located above the support seat (2); A laser rangefinder (4), which is slidably arranged on the measurement table (1) along the first direction and is located on one side of the support seat (2); A computer, which is connected to both the laser rangefinder (4) and the industrial camera (3); A first slide rail (6) along the first direction is provided on the measurement table (1), and a plurality of sliding seats are slidably arranged on the first slide rail (6). The support seat (2) and the laser rangefinder (4) are both arranged on the sliding seats; There are two first slide rails (6), which are respectively arranged on both sides of the measurement table (1) along the first direction. The sliding seat includes: Two first sliders (7), and the first sliders (7) are slidably arranged on the tracks of the two first slide rails (6); A connecting arm (8), and the connecting arm (8) connects the two first sliders (7); The support seat (2) and the laser rangefinder (4) are both arranged on the connecting arm (8); A locking mechanism is provided on the first slider (7), and the locking mechanism includes: Two rotating arms (13), which are respectively located on both sides of the first slide rail (6). The middle of the rotating arm (13) is rotatably arranged on the first slider (7), and a friction pad (14) and a sliding pad (15) for contacting the first slide rail (6) are respectively provided at both ends of the rotating arm (13); A spring (16), which provides an elastic force for making the sliding pad (15) approach the first slide rail (6); A bidirectional screw (17), which is rotatably arranged on the first slider (7); Nuts, including a first nut (18) and a second nut (19), which are both slidably arranged on the first slider (7). The first nut (18) and the second nut (19) are respectively threadedly engaged with both ends of the bidirectional screw (17); A push plate (20), and push plates (20) are provided on both the first nut (18) and the second nut (19) for pushing the friction pad (14) to approach the first slide rail (6).

2. The axial optical detection device according to claim 1, characterized in that, it further includes a first positioning plate (5), and the first positioning plate (5) is arranged on the measurement table and is opposite to the laser rangefinder (4).

3. The axial optical detection device according to claim 1, characterized in that, A bracket (9) is provided on the measurement table (1), a cross beam (10) is provided on the bracket (9), a second slide rail (11) and a scale along the first direction are provided on the cross beam (10), a second slider (12) is slidably arranged on the second slide rail (11), and the industrial camera (3) is arranged on the second slider (12).

4. The axial optical detection device according to claim 2, characterized in that, It further includes a second positioning plate (21), the second positioning plate (21) is slidably arranged on the measuring table (1), and both the first positioning plate (5) and the second positioning plate (21) are rotatably arranged.

5. The shaft optical detection device according to claim 4, characterized in that both the first positioning plate (5) and the second positioning plate (21) are rotatably arranged on the measuring table (1) through a ratchet structure.

6. The shaft optical detection device according to claim 1, characterized in that an induction sensor (22) is further arranged on the support seat (2) for detecting whether a shaft is placed on the support seat (2).

7. The shaft optical detection device according to claim 1, characterized in that it further includes an alarm lamp (23), and the alarm lamp (23) is connected to the computer.

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