Conical surface detection device
By combining a beam splitter and a reflector with a photodetector, the problems of insufficient accuracy and complex operation in traditional cone surface detection are solved, achieving automated and accurate cone surface detection.
Patent Information
- Application Number
- CN202423257827.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional methods for detecting conical surfaces suffer from insufficient accuracy and complex operation, especially since the sensor cannot fully fit the conical surface, leading to errors and complicated operations requiring manual intervention.
By using a beam splitter and a reflector in conjunction with a first photodetector and a second photodetector, the light emitted by the laser emitter is split into two parallel beams to illuminate the conical surface. The intensity of the laser reflected from the conical surface is detected by the photodetector, thus achieving automated detection.
It improves the accuracy of cone surface inspection, reduces errors caused by human intervention, simplifies the operation process, and achieves efficient cone surface inspection.
Smart Images
Figure CN223925712U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of conical surface detection technology, specifically a conical surface detection device. Background Technology
[0002] In fields such as machinery manufacturing, aerospace, and automotive manufacturing, cones are common mechanical parts, and the smoothness of their conical surfaces has a significant impact on product quality and performance. Traditional measurement methods involve placing an instrument sensor in contact with the conical surface to record minute undulations and calculate the roughness value. However, improper sensor installation can lead to insufficient accuracy due to incomplete contact with the conical surface, and the need for the sensor to move up or down with the curvature of the conical surface complicates the operation. Utility Model Content
[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a conical surface detection device using a beam splitter and a reflective mirror in conjunction with a first photodetector and a second photodetector. This device can split the light emitted by a laser emitter into two parallel laser beams that illuminate the conical surface to be detected. The roughness of the conical surface is then determined by detecting the intensity of the laser reflected from the conical surface using the first and second photodetectors. Throughout the process, the worker only needs to install the conical surface to be detected; no worker intervention is required during the detection process. This eliminates errors caused by human intervention and thus solves the problem of improving the accuracy of conical surface detection and eliminating complex operations.
[0004] To achieve the above objectives, this application provides the following technical solution:
[0005] A conical surface detection device includes a bracket, a laser emitter, and a display screen. A beam-splitting mirror and a reflective mirror are disposed on one side of the laser emitter on the bracket. The beam-splitting mirror and the reflective mirror are parallel to each other and are located between the reflective mirror and the laser emitter. The angle between the beam-splitting mirror and the light emitted by the laser emitter is 45 degrees. The light emitted by the laser emitter can pass through the beam-splitting mirror to the reflective mirror. A first photodetector and a second photodetector are disposed on one side of the bracket formed by the beam-splitting mirror and the reflective mirror. The detection ends of the first photodetector and the second photodetector face each other, and a predetermined gap exists between the first and second photodetectors. The light emitted by the laser emitter, reflected by the beam-splitting mirror and the reflective mirror, passes through the gap formed between the first and second photodetectors. The detection planes of the first and second photodetectors are parallel to the light emitted by the laser emitter and reflected by the beam-splitting mirror and the reflective mirror. A rotating gripper is provided on the side of the bracket facing away from the beam splitter in the gap between the first and second photodetectors. The rotation axis of the rotating gripper is parallel to the light emitted by the laser emitter and reflected by the beam splitter and the reflector. The bracket is provided with a moving mechanism for adjusting the distance between the beam splitter and the reflector. The execution end of the moving mechanism is connected to the beam splitter and the reflector respectively. The bracket is provided with a first linear drive mechanism and a second linear drive mechanism that cooperate with the moving mechanism. The execution end of the first linear drive mechanism is fixedly connected to the first photodetector, and the execution end of the second linear drive mechanism is fixedly connected to the second photodetector. The paths along which the first and second linear drive mechanisms move the first and second photodetectors are both parallel to the light emitted by the laser emitter and reflected by the beam splitter and the reflector. Both the first and second photodetectors are signal-connected to a PLC system, and the output of the PLC system is signal-connected to the display screen.
[0006] Preferably, the connecting line segment between the first photodetector and the second photodetector is perpendicular to the light emitted by the laser emitter and reflected by the beam splitter and the reflector.
[0007] Preferably, the first linear drive mechanism is a first cylinder, and the first photodetector is fixedly mounted on the free end of the piston rod of the first cylinder; the second linear drive mechanism is a second cylinder, and the second photodetector is fixedly mounted on the free end of the piston rod of the second cylinder.
[0008] Preferably, the rotating gripper includes a rotating mechanism and a gripper body. The rotating mechanism is fixedly mounted on the bracket. The rotating axis of the rotating mechanism is parallel to the light emitted by the laser emitter and reflected by the beam splitter and the reflector. The gripper body is fixedly mounted at the free end of the rotating axis.
[0009] Preferably, the gripper body is a finger cylinder.
[0010] Preferably, the rotating mechanism is a first servo motor, and the output shaft of the first servo motor is fixedly connected to the end of the finger cylinder facing away from the finger. The output shaft of the first servo motor is the rotating shaft of the rotating mechanism.
[0011] Preferably, the moving mechanism includes a second servo motor, a gear, a first rack, and a second rack. The gear is rotatably mounted on the bracket, and the axis of the gear is perpendicular to the light emitted by the laser emitter. The first rack and the second rack are slidably mounted on the bracket, parallel to the light emitted by the laser emitter. The two ends of the first rack mesh with the gear on one side of the gear, and the two ends of the second rack mesh with the gear on the other side of the gear. One end of the first rack is fixedly connected to the sidewall of the beam splitter via a fixing rod, and one end of the second rack is fixedly connected to the sidewall of the reflector.
[0012] Preferably, the end face of the gear is perpendicular to the light emitted by the laser emitter and reflected by the beam splitter and the reflector. The bracket is provided with a first groove that is slidably connected to the first rack and a second groove that is slidably connected to the second rack. The first groove and the second groove are parallel. The second groove is between the first groove and the beam splitter. The side of the second rack facing away from the gear is directly fixed to the side wall of the reflector. The end of the first rack facing the laser emitter is fixedly connected to the fixing rod. The projection of the fixing rod on the plane where the end face of the gear is located is L-shaped. The free end of the horizontal part of the L-shape away from the vertical part is fixedly connected to the end of the first rack facing the laser emitter. The free end of the vertical part of the L-shape facing away from the first rack is fixedly connected to the reflector. The length of the horizontal part of the L-shape is greater than the outer diameter of the gear.
[0013] Compared with the prior art, the beneficial effects of this application are:
[0014] This application employs a beam splitter and a reflective mirror in conjunction with a first photodetector and a second photodetector to design a conical surface detection device. This device can split the light emitted by a laser emitter into two parallel laser beams that illuminate the conical surface to be detected. The roughness of the conical surface is then determined by detecting the intensity of the laser reflected from the conical surface using the first and second photodetectors. Throughout the process, the worker only needs to install the conical surface to be detected; no worker intervention is required during the detection process. This eliminates errors caused by human intervention, thereby solving the problem of how to improve the accuracy of conical surface detection and eliminate complex operations. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this application;
[0016] Figure 2 This is a cross-sectional view after the display screen has been removed in this application;
[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0018] Figure 4 for Figure 3 The structural diagram on the left;
[0019] Figure 5 A diagram showing the relationship between the moving mechanism and the beam splitter and reflector.
[0020] Figure 6 This is a schematic diagram of this application.
[0021] The components are as follows: 1. Support; 2. Laser emitter; 3. Beam splitter; 4. Reflector; 5. First photodetector; 6. Second photodetector; 7. First cylinder; 8. Second cylinder; 9. Finger cylinder; 10. First servo motor; 11. Second servo motor; 12. Display screen; 13. Gear; 14. First rack; 15. Second rack; 16. First groove; 17. Second groove; 18. Fixing rod; 19. The cone being measured. Detailed Implementation
[0022] join Figures 1-4A conical surface detection device includes a bracket 1, a laser emitter 2, and a display screen 19. A beam-splitting mirror 3 and a reflective mirror 4 are provided on one side of the laser emitter 2 on the bracket 1. The beam-splitting mirror 3 and the reflective mirror 4 are parallel to each other. The beam-splitting mirror 3 is located between the reflective mirror 4 and the laser emitter 2. The angle between the beam-splitting mirror 3 and the light emitted by the laser emitter 2 is 45 degrees. The light emitted by the laser emitter 2 can pass through the beam-splitting mirror 3 and onto the reflective mirror 4. The bracket 1 is equipped with the beam-splitting mirror 3 and the reflective mirror 4. A first photodetector 5 and a second photodetector 6 are provided on one side. The detection ends of the first photodetector 5 and the second photodetector 6 face each other. A preset gap exists between the first photodetector 5 and the second photodetector 6. The light emitted by the laser emitter 2, after being reflected by the beam splitter 3 and the reflector 4, passes through the gap formed between the first photodetector 5 and the second photodetector 6. The light-detecting planes of the first photodetector 5 and the second photodetector 6 are parallel to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. The bracket 1 has a rotating gripper on the side facing away from the beam splitter 3, located in the gap between the first photodetector 5 and the second photodetector 6. The rotation axis of the rotating gripper is parallel to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. The bracket has a moving mechanism for adjusting the distance between the beam splitter 3 and the reflector. The execution end of the moving mechanism is connected to the beam splitter 3 and the reflector, respectively. The bracket 1 has a first linear drive mechanism and a second linear drive mechanism that cooperate with the moving mechanism. The execution end of the first linear drive mechanism is fixedly connected to the first photodetector 5, and the execution end of the second linear drive mechanism is fixedly connected to the second photodetector 6. The paths along which the first linear drive mechanism moves the first photodetector 5 and the second linear drive mechanism moves the second photodetector 6 are both parallel to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. The first photodetector 5 and the second photodetector 6 are both signal-connected to a PLC system. The output of the PLC system is signal-connected to the display screen 19.
[0023] In this embodiment, during use, the cone 19 to be measured is placed on the rotating jaws, with the smaller end of the cone 19 facing the beam splitter 3. The axis of the cone 19 lies between the light emitted by the laser emitter 2 and reflected by the beam splitter 3, and the light emitted by the laser emitter 2 and reflected by the reflective mirror 4. For ease of description, the light rays are represented by letters below:
[0024] like Figure 6As shown: The light emitted by laser emitter 2 is: light ray a;
[0025] The light emitted by laser emitter 2 and reflected by the beam splitter 3 is light ray b;
[0026] The light emitted by laser emitter 2 and reflected by the reflective mirror 4 is light ray c;
[0027] The light ray reflected from the surface of the measured cone 19 into the first photodetector 5 is ray d;
[0028] The light reflected from the surface of the measured cone 19 into the second photodetector 6 is light ray e.
[0029] The principle is that after the light a emitted by the laser emitter 2 shines on the beam splitter 3, part of it is reflected by the beam splitter 3 to form light b; the other part passes through the beam splitter 3 and shines on the reflector 4 to form light c. After light c and light b shine on the cone surface of the cone 19 being measured, they are reflected into the second photodetector 6 and the first photodetector 7, respectively. During operation, the distance between the beam splitter 3 and the reflector 4 is adjusted via a moving mechanism, allowing light rays c and b to illuminate different positions on the conical surface of the cone 19 being measured. Simultaneously, the second photodetector 6 and the first photodetector 7 also adjust to receive light rays e and d. The PLC system then displays the intensity of light rays e and d based on the feedback from the second and first photodetectors 6 and 7, thus determining whether the conical surface of the cone 19 is smooth. The result is displayed on the screen 12. If the intensity of light rays e and d is strong, the surface is smooth; the intensity of light rays e and d reflected from rough areas on the conical surface of the cone 19 will be weak. Therefore, if the intensity of the light received by the second and first photodetectors 6 and 7 is weak, it indicates that the location on the conical surface of the cone 19 reflecting light rays e and d is rough (either with protrusions or depressions). Simultaneously, the rotating jaws cause the cone 19 to rotate, thus illuminating all positions on the conical surface of the cone 19 being measured.
[0030] As a preferred embodiment, the connecting line segment between the first photodetector 5 and the second photodetector 6 is perpendicular to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. That is, the connecting line segment between the first photodetector 5 and the second photodetector 6 is perpendicular to light rays b and c. This allows light rays b and c to simultaneously detect the same position on the same cross-section of the cone surface of the measured cone 19, with light ray b detecting one half of the cone surface and light ray c detecting the other half, thus enabling faster detection.
[0031] In a preferred embodiment, the first linear drive mechanism is a first cylinder 7, with the first photodetector 5 fixedly mounted on the free end of the piston rod of the first cylinder 7; the second linear drive mechanism is a second cylinder 8, with the second photodetector 6 fixedly mounted on the free end of the piston rod of the second cylinder 8. With this configuration, the first photodetector 5 and the second photodetector 6 are respectively driven by the first cylinder 7 and the second cylinder 8 to move in coordination.
[0032] In a preferred embodiment, the rotating gripper includes a rotating mechanism and a gripper body. The rotating mechanism is fixedly mounted on the bracket 1. The rotation axis of the rotating mechanism is parallel to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. The gripper body is fixedly mounted at the free end of the rotating axis.
[0033] As a preferred embodiment, the gripper body is a finger cylinder 9. The cone 19 to be measured is held by the fingers of the finger cylinder 9.
[0034] In a preferred embodiment, the rotation mechanism is a first servo motor 10, the output shaft of which is fixedly connected to the end of the finger cylinder 9 facing away from the finger. The output shaft of the first servo motor 10 serves as the rotation shaft of the rotation mechanism. With this configuration, the rotation of the gripper body is controlled by the rotation of the first servo motor 10, thereby controlling the rotation of the measured cone 19.
[0035] In a preferred embodiment, the moving mechanism includes a second servo motor 11, a gear 13, a first rack 14, and a second rack 15. The gear 13 is rotatably mounted on the support 1, and the axis of the gear 13 is perpendicular to the light emitted by the laser emitter 2. The first rack 14 and the second rack 15 are slidably mounted on the support 1, parallel to the light emitted by the laser emitter 2. The two ends of the first rack 14 mesh with the gear 13 on one side, and the two ends of the second rack 15 mesh with the gear 13 on the other side. One end of the first rack 14 is fixedly connected to the side wall of the beam splitter 3 via a fixing rod 18, and one end of the second rack 15 is fixedly connected to the side wall of the reflector 4.
[0036] With this setup, since a gear 13 is used in conjunction with the first rack 14 and the second rack 15, the first rack 14 and the second rack 15 move synchronously and oppositely under the drive of the gear 13. Therefore, when adjusting the distance between the beam splitter 3 and the reflector 4, no matter how it is adjusted, the axis of the measured cone 19 can be guaranteed to be at the midpoint between light rays b and c.
[0037] In a preferred embodiment, the end face of the gear is perpendicular to the light emitted by the laser emitter 2 and reflected by the beam splitter 3 and the reflector 4. The bracket 1 is provided with a first groove 16 slidably connected to the first rack 14 and a second groove 17 slidably connected to the second rack 15. The first groove 16 and the second groove 17 are parallel. The second groove 17 is located between the first groove 16 and the beam splitter 3. The side of the second rack 15 facing away from the gear 13 is directly fixed to the side wall of the reflector 4. The end of the first rack 14 facing the laser emitter 2 is fixedly connected to the fixing rod 18. The projection of the fixing rod 18 on the plane where the end face of the gear 13 is located is L-shaped. The free end of the horizontal part of the L-shape away from the vertical part is fixedly connected to the end of the first rack 14 facing the laser emitter 2. The free end of the vertical part of the L-shape facing away from the first rack 14 is fixedly connected to the reflector 4. The length of the horizontal part of the L-shape is greater than the outer diameter of the gear 13. With this configuration, the first slide groove 16 and the second slide groove 17 respectively restrict the first rack 14 and the second rack 15, preventing the first rack 14 and the second rack 15 from swinging during the drive of the gear 13; the L-shaped fixing rod 18 is designed to ensure that the meshing between the gear 13 and the first rack 14 is not affected while it can be fixedly connected to the beam splitter 3.
Claims
1. A cone surface detection device, characterized in that, The system includes a bracket (1), a laser emitter (2), and a display screen (19). A beam splitter (3) and a reflector (4) are provided on one side of the laser emitter (2) on the bracket (1). The beam splitter (3) and the reflector (4) are parallel to each other. The beam splitter (3) is located between the reflector (4) and the laser emitter (2). The angle between the beam splitter (3) and the light emitted by the laser emitter (2) is 45 degrees. The light emitted by the laser emitter (2) can pass through the beam splitter (3) to the reflector (4). The bracket (1) has a beam splitter (3) and a reflector (4) on it. (4) One side of the assembly is provided with a first photodetector (5) and a second photodetector (6). The detection end of the first photodetector (5) and the detection end of the second photodetector (6) face each other. A preset gap is formed between the first photodetector (5) and the second photodetector (6). The light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4) both pass through the gap formed between the first photodetector (5) and the second photodetector (6). The light-detecting plane of the first photodetector (5) and the light-detecting plane of the second photodetector (6) are both parallel to the light emitted by the laser emitter (2) and reflected by the second photodetector (6). The beam splitter (3) and the reflector (4) reflect the light. The bracket (1) has a rotating gripper on the side facing away from the beam splitter (3) in the gap between the first photodetector (5) and the second photodetector (6). The rotation axis of the rotating gripper is parallel to the light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4). The bracket has a moving mechanism for adjusting the distance between the beam splitter and the reflector. The execution end of the moving mechanism is connected to the beam splitter and the reflector respectively. The bracket (1) has a first linear drive mechanism and a second linear drive mechanism that cooperate with the moving mechanism. The actuator of the first linear drive mechanism is fixedly connected to the first photodetector (5), and the actuator of the second linear drive mechanism is fixedly connected to the second photodetector (6). The path of the first linear drive mechanism driving the first photodetector (5) to move and the path of the second linear drive mechanism driving the second photodetector (6) to move are both parallel to the light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4). The first photodetector (5) and the second photodetector (6) are both signal connected to the PLC system, and the output of the PLC system is signal connected to the display screen (19).
2. The conical surface detection device according to claim 1, characterized in that, The connecting line segment between the first photodetector (5) and the second photodetector (6) is perpendicular to the light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4).
3. The conical surface detection device according to claim 1, characterized in that, The first linear drive mechanism is a first cylinder (7), and the first photodetector (5) is fixedly installed at the free end of the piston rod of the first cylinder (7). The second linear drive mechanism is a second cylinder (8), and the second photodetector (6) is fixedly installed at the free end of the piston rod of the second cylinder (8).
4. The conical surface detection device according to claim 1, characterized in that, The rotating gripper includes a rotating mechanism and a gripper body. The rotating mechanism is fixedly mounted on the bracket (1). The rotating axis of the rotating mechanism is parallel to the light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4). The gripper body is fixedly mounted at the free end of the rotating axis.
5. The conical surface detection device according to claim 4, characterized in that, The gripper body is a finger cylinder (9).
6. The conical surface detection device according to claim 5, characterized in that, The rotating mechanism is a first servo motor (10), the output shaft of the first servo motor (10) is fixedly connected to the end of the finger cylinder (9) facing away from the finger, and the output shaft of the first servo motor (10) is the rotating shaft of the rotating mechanism.
7. The conical surface detection device according to claim 4, characterized in that, The moving mechanism includes a second servo motor (11), a gear (13), a first rack (14), and a second rack (15). The gear (13) is rotatably mounted on the bracket (1). The axis of the gear (13) is perpendicular to the light emitted by the laser emitter (2). The first rack (14) and the second rack (15) are slidably mounted on the bracket (1) and are parallel to the light emitted by the laser emitter (2). The two ends of the first rack (14) mesh with the gear (13) on one side of the gear (13), and the two ends of the second rack (15) mesh with the gear (13) on the other side of the gear (13). One end of the first rack (14) is fixedly connected to the side wall of the beam splitter (3) by a fixing rod (18), and one end of the second rack (15) is fixedly connected to the side wall of the reflector (4).
8. The conical surface detection device according to claim 7, characterized in that, The end face of the gear is perpendicular to the light emitted by the laser emitter (2) and reflected by the beam splitter (3) and the reflector (4). The bracket (1) is provided with a first groove (16) slidably connected to the first rack (14) and a second groove (17) slidably connected to the second rack (15). The first groove (16) and the second groove (17) are parallel. The second groove (17) is located between the first groove (16) and the beam splitter (3). The side of the second rack (15) facing away from the gear (13) is directly fixed to the reflector (4). The first rack (14) is fixedly connected to the fixed rod (18) at one end facing the laser emitter (2). The projection of the fixed rod (18) on the plane where the end face of the gear (13) is located is L-shaped. The free end of the horizontal part of the L-shape away from the vertical part is fixedly connected to the end of the first rack (14) facing the laser emitter (2). The free end of the vertical part of the L-shape away from the first rack (14) is fixedly connected to the reflector (4). The length of the horizontal part of the L-shape is greater than the outer diameter of the gear (13).