A rack full-size 3D optical measuring instrument

Abstract

The application relates to the technical field of rack detection equipment, in particular to a rack full-size 3D optical measuring instrument which comprises a shock-resistant machine table, a single-laser monocular profilometer and a single-laser binocular profilometer, a three-jaw rotating disc for clamping a measured rack is connected to the table top of the shock-resistant machine table, a first linear module and a second linear module are vertically arranged on the shock-resistant machine table, a first mounting plate is horizontally arranged on a movable seat of the first linear module, the single-laser monocular profilometer and the single-laser binocular profilometer are arranged on the two sides of the first mounting plate respectively, the single-laser monocular profilometer and the single-laser binocular profilometer are electrically connected with an external computing power module, a second mounting plate is connected to a movable seat of the second linear module, a bearing seat is arranged on the second mounting plate, and a top pin for abutting against the end of the measured rack is connected in the bearing seat. The application has the effect of making the rack measuring equipment meet the requirements of efficient, accurate and comprehensive detection of the production end.

Description

Technical Field

[0001] This utility model relates to the technical field of rack testing equipment, and in particular to a rack full-size 3D optical measuring instrument. Background Technology

[0002] Currently, rack inspection mainly relies on three methods: coordinate measuring machine (CMM) point detection, gear meshing measurement, and manual measurement. However, all three methods have significant drawbacks: 1. Deficiencies of coordinate measuring machine (CMM) point detection: It mainly adopts mechanical probe contact sampling, which has low sampling density, makes it easy to ignore abnormal points, affects the accuracy of detection, and has extremely low detection efficiency. It includes equipment zeroing, program programming and point measurement, etc. It takes 20 minutes to detect a 65-tooth steering shaft. It is only suitable for laboratory sampling inspection and cannot achieve full inspection at the production end. Moreover, the equipment cost is high and the requirements for the detection environment are harsh, with strict limitations on vibration, foundation thickness, etc.

[0003] 2. Defects of meshing measurement: It mainly relies on standard meshing gears. Wear of standard gears will directly affect the detection accuracy. Moreover, contact measurement may damage the product surface. It is an indirect measurement method. It can only judge whether the tested part is qualified by the degree of meshing. It cannot obtain specific dimensional data. It is only suitable for final inspection and cannot be used as a process inspection to evaluate the quality of the preceding process.

[0004] 3. Disadvantages of manual measurement: poor repeatability, accuracy is highly correlated with the operator's skill level, significant differences in measurement data among different personnel, insufficient consistency, limited measurable data, and most of the data depends on specific fixtures and measuring tools, such as the reliance on standard cylinders for measuring the distance between bars, which limits the scope of application.

[0005] In conclusion, the three measurement methods are insufficient to meet the needs of efficient, accurate, and comprehensive testing at the production end. Utility Model Content

[0006] In order to enable rack measuring equipment to meet the needs of efficient, accurate and comprehensive testing at the production end, this application provides a rack full-size 3D optical measuring instrument.

[0007] The rack full-size 3D optical measuring instrument provided in this application adopts the following technical solution: A full-size 3D optical measuring instrument for a rack includes a vibration-resistant machine platform, a single-laser monocular profilometer, and a single-laser binocular profilometer. A three-jaw rotary disk for clamping the rack under test is connected to the surface of the vibration-resistant machine platform. A first linear module and a second linear module are vertically arranged on the vibration-resistant machine platform. A first mounting plate is horizontally arranged on the movable seat of the first linear module. The single-laser monocular profilometer and the single-laser binocular profilometer are respectively arranged on both sides of the first mounting plate. Both the single-laser monocular profilometer and the single-laser binocular profilometer are electrically connected to an external computing module. A second mounting plate is connected to the movable seat of the second linear module. A bearing seat is provided on the second mounting plate, and a pin for abutting against the end of the rack under test is connected inside the bearing seat.

[0008] Preferably, a third linear module and a fourth linear module are connected to the first mounting plate. The third linear module and the fourth linear module are symmetrically arranged along the axis of the first mounting plate. The third linear module is connected to a movable seat of a third mounting plate, and the single-laser binocular profilometer is mounted on the third mounting plate. The fourth linear module is connected to a movable seat of a fourth mounting plate, and the single-laser monocular profilometer is mounted on the fourth mounting plate.

[0009] Preferably, a protective frame is connected to the anti-vibration machine platform, a fifth linear module is vertically connected between the protective frame and the anti-vibration machine platform, a fifth mounting plate is connected to the movable seat of the fifth linear module, a sixth linear module is horizontally arranged on the fifth mounting plate, a sixth mounting plate is connected to the movable seat of the sixth linear module, a first 3D camera is connected to the sixth mounting plate, the first 3D camera is electrically connected to an external computing module, and the first 3D camera is arranged in the direction toward the rack being measured.

[0010] Preferably, a fixed frame is vertically connected to the anti-vibration machine platform, a seventh linear module is connected to the fixed frame, a seventh mounting plate is connected to the movable seat of the seventh linear module, an eighth linear module is horizontally arranged on the seventh mounting plate, an eighth mounting plate is connected to the movable seat of the eighth linear module, a second 3D camera is connected to the eighth mounting plate, the second 3D camera is electrically connected to an external computing module, and the second 3D camera is arranged in the direction toward the rack being measured.

[0011] Preferably, a guide rail is connected to the second mounting plate, the guide rail is arranged along the length direction of the second linear module, a slider is slidably arranged on the guide rail, a ninth mounting plate is connected to the slider, the bearing seat is connected to the ninth mounting plate, a first fixing block and a second fixing block are respectively connected to opposite sides of the second mounting plate, the second fixing block is locked on the guide rail, the slider is located between the first fixing block and the second fixing block, a guide rod is fixedly connected to the first fixing block, a guide block is slidably arranged on the guide rod, the guide block is connected to the ninth mounting plate, a compression spring is sleeved on the guide rod, one end of the compression spring abuts against the first fixing block, and the other end abuts against the guide block.

[0012] In summary, this application includes the following beneficial technical effects: This utility model provides a full-size 3D optical measuring instrument for racks. It uses a single-laser monocular profilometer to scan the circular surface of the rack and a single-laser binocular profilometer to scan the tooth surface. Combined with a first 3D camera and a second 3D camera, it accurately confirms the tooth surface position. Theoretically, there are an unlimited number of sampling points. The 3D modeling method closely resembles the actual shape of the measured part, enabling precise measurement of dimensional data that is difficult to obtain using conventional methods. Non-contact scanning, combined with a computing module, allows for rapid data processing, improving inspection efficiency. Furthermore, the equipment is equipped with a vibration-resistant machine platform, ensuring the stability of the inspection process. Therefore, this rack measuring equipment meets the needs of production for efficient, accurate, and comprehensive inspection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the rack full-size 3D optical measuring instrument in the embodiments of this application; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram illustrating the structure on the ninth mounting plate in the embodiments of this application.

[0014] Explanation of reference numerals in the attached drawings: 1. Anti-vibration machine platform; 11. Three-grip rotary table; 12. First linear module; 121. First mounting plate; 1211. Third linear module; 12111. Third mounting plate; 1212. Fourth linear module; 12121. Fourth mounting plate; 13. Second linear module; 131. Second mounting plate; 1311. First fixing block; 1312. Second fixing block; 14. Protective frame; 15. Fixing frame; 2. Single-laser monocular profilometer 3. Single-laser binocular profilometer; 4. Bearing housing; 41. Ejector pin; 5. Fifth linear module; 51. Fifth mounting plate; 52. Sixth linear module; 53. Sixth mounting plate; 54. First 3D camera; 6. Seventh linear module; 61. Seventh mounting plate; 62. Eighth linear module; 63. Eighth mounting plate; 65. Second 3D camera; 7. Guide rail; 71. Slider; 711. Ninth mounting plate; 8. Guide rod; 81. Guide block; 811. Compression spring. Detailed Implementation

[0015] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] This application discloses a full-size 3D optical measuring instrument for racks. (Refer to...) Figure 1 , Figure 2 and Figure 3The full-size 3D optical measuring instrument for racks includes a vibration-resistant machine platform 1, a single-laser monocular profilometer 2, and a single-laser binocular profilometer 3. A protective cover can be installed on the outside of the vibration-resistant machine platform 1. A three-jaw rotary disk for clamping the rack under test is connected to the table surface of the vibration-resistant machine platform 1. A first linear module 12 and a second linear module 13 are vertically arranged on the vibration-resistant machine platform 1. A first mounting plate 121 is horizontally arranged on the movable seat of the first linear module 12. The single-laser monocular profilometer 2 and the single-laser binocular profilometer 3 are respectively arranged on both sides of the first mounting plate 121. Both the single-laser monocular profilometer 2 and the single-laser binocular profilometer 3 are electrically connected to an external computing module. A second mounting plate 131 is connected to the movable seat of the second linear module 13. A bearing seat 4 is provided on the second mounting plate 131. A pin 41 for abutting against the end of the rack under test is connected inside the bearing seat 4.

[0018] The detection data is transmitted to the computing module and host computer in real time, supporting remote monitoring and analysis, facilitating quality traceability and anomaly investigation in the production process, and improving production management efficiency.

[0019] A third linear module 1211 and a fourth linear module 1212 are connected to the first mounting plate 121. The third linear module 1211 and the fourth linear module 1212 are symmetrically arranged along the axis of the first mounting plate 121. The third mounting plate 12111 is connected to the movable seat of the third linear module 1211. The single-laser binocular profilometer 3 is mounted on the third mounting plate 12111. The fourth mounting plate 12121 is connected to the movable seat of the fourth linear module 1212. The single-laser monocular profilometer 2 is mounted on the fourth mounting plate 12121.

[0020] A protective frame 14 is connected to the seismic test platform 1. A fifth linear module 5 is vertically connected between the protective frame 14 and the seismic test platform 1. A fifth mounting plate 51 is connected to the movable seat of the fifth linear module 5. A sixth linear module 52 is horizontally arranged on the fifth mounting plate 51. A sixth mounting plate 53 is connected to the movable seat of the sixth linear module 52. A first 3D camera 54 is connected to the sixth mounting plate 53. The first 3D camera 54 is electrically connected to an external computing module. The first 3D camera 54 is arranged in the direction toward the rack being measured.

[0021] A fixed frame 15 is vertically connected to the anti-vibration machine 1. A seventh linear module 6 is connected to the fixed frame 15. A seventh mounting plate 61 is connected to the movable seat of the seventh linear module 6. An eighth linear module 62 is horizontally arranged on the seventh mounting plate 61. An eighth mounting plate 63 is connected to the movable seat of the eighth linear module 62. A second 3D camera 65 is connected to the eighth mounting plate 63. The second 3D camera 65 is electrically connected to an external computing module. The second 3D camera 65 is arranged in the direction toward the rack being measured.

[0022] A guide rail 7 is connected to the second mounting plate 131. The guide rail 7 is set along the length of the second linear module 13. A slider 71 is slidably set on the guide rail 7. A ninth mounting plate 711 is connected to the slider 71. A bearing seat 4 is connected to the ninth mounting plate 711. A first fixing block 1311 and a second fixing block 1312 are respectively connected to opposite sides of the second mounting plate 131. The second fixing block 1312 is locked on the guide rail 7. The slider 71 is located between the first fixing block 1311 and the second fixing block 1312. A guide rod 8 is fixedly connected to the first fixing block 1311. A guide block 81 is slidably set on the guide rod 8. The guide block 81 is connected to the ninth mounting plate 711. A compression spring 811 is sleeved on the guide rod 8. One end of the compression spring 811 abuts against the first fixing block 1311, and the other end abuts against the guide block 81.

[0023] The implementation principle of the rack full-size 3D optical measuring instrument in this application embodiment is as follows: 1. Clamping and positioning: Place the rack to be tested on the three-jaw rotary table of the vibration-resistant machine 1, and start the three-jaw rotary table to clamp the rack; adjust the position of the second linear module 13 and the guide rail 7 so that the ejector pin 41 abuts against the end of the rack, and the compression spring 811 buffers to ensure stable clamping and avoid deformation.

[0024] 2. Tooth surface confirmation: Activate the fifth linear module 5 and the seventh linear module 6, adjust the position of the first 3D camera 54 and the second 3D camera 65 to align them with the toothed rack being tested, and transmit the image data acquired by the cameras to the computing module to accurately confirm the orientation and position of the tooth surface, in preparation for subsequent scanning.

[0025] 3. Scanning and Sampling: According to the detection requirements, the height of the first mounting plate 121 is adjusted by the first linear module 12, and the positions of the single-laser monocular profilometer 2 and the single-laser binocular profilometer 3 are finely adjusted by the third linear module 1211 and the fourth linear module 1212, so that the monocular profilometer is aligned with the circular surface of the rack and the binocular profilometer is aligned with the tooth surface; the first linear module 12 is started, which drives the single-laser monocular profilometer 2 and the single-laser binocular profilometer 3 to scan along the rack axis. The grating ruler sends a line trigger signal, and 3D point cloud data is collected synchronously and sent to the computing module.

[0026] 4. Data Processing and Judgment: After receiving point cloud data, the computing module completes 3D reconstruction, automatically measures the specified size parameters, and transmits the results to the host computer. The host computer program analyzes the data, judges whether it is qualified, records the test results, and supports alarm prompts for abnormal data.

[0027] 5. Test complete: After the test is completed, the three-jaw rotary table is released and the rack under test is removed. If continuous testing is required, the above steps can be repeated without resetting the equipment to zero or setting complex parameters.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A rack and pinion full-size 3D optical measuring instrument, characterized in that: The device includes a seismic testing platform (1), a single-laser monocular profilometer (2), and a single-laser binocular profilometer (3). A three-jaw rotary disk for holding the rack under test is connected to the platform of the seismic testing platform (1). A first linear module (12) and a second linear module (13) are vertically arranged on the seismic testing platform (1). A first mounting plate (121) is horizontally arranged on the movable seat of the first linear module (12). The single-laser monocular profilometer (2) and the single-laser binocular profilometer (3) are respectively arranged on both sides of the first mounting plate (121). The single-laser monocular profilometer (2) and the single-laser binocular profilometer (3) are electrically connected to an external computing module. A second mounting plate (131) is connected to the movable seat of the second linear module (13). A bearing seat (4) is provided on the second mounting plate (131). A pin (41) for abutting against the end of the rack under test is connected inside the bearing seat (4).

2. The rack and pinion full-size 3D optical measuring instrument according to claim 1, characterized in that: A third linear module (1211) and a fourth linear module (1212) are connected to the first mounting plate (121). The third linear module (1211) and the fourth linear module (1212) are symmetrically arranged along the axis of the first mounting plate (121). The third mounting plate (12111) is connected to the movable seat of the third linear module (1211). The single-laser binocular profilometer (3) is mounted on the third mounting plate (12111). The fourth mounting plate (12121) is connected to the movable seat of the fourth linear module (1212). The single-laser monocular profilometer (2) is mounted on the fourth mounting plate (12121).

3. The rack and pinion full-size 3D optical measuring instrument according to claim 1, characterized in that: A protective frame (14) is connected to the anti-vibration machine platform (1). A fifth linear module (5) is vertically connected between the protective frame (14) and the anti-vibration machine platform (1). A fifth mounting plate (51) is connected to the movable seat of the fifth linear module (5). A sixth linear module (52) is horizontally arranged on the fifth mounting plate (51). A sixth mounting plate (53) is connected to the movable seat of the sixth linear module (52). A first 3D camera (54) is connected to the sixth mounting plate (53). The first 3D camera (54) is electrically connected to an external computing module. The first 3D camera (54) is arranged in the direction toward the rack being measured.

4. The rack and pinion full-size 3D optical measuring instrument according to claim 1, characterized in that: A fixed frame (15) is vertically connected to the anti-vibration machine platform (1). A seventh linear module (6) is connected to the fixed frame (15). A seventh mounting plate (61) is connected to the movable seat of the seventh linear module (6). An eighth linear module (62) is horizontally arranged on the seventh mounting plate (61). An eighth mounting plate (63) is connected to the movable seat of the eighth linear module (62). A second 3D camera (65) is connected to the eighth mounting plate (63). The second 3D camera (65) is electrically connected to an external computing module. The second 3D camera (65) is arranged in the direction toward the rack being measured.

5. A rack-and-pinion full-size 3D optical measuring instrument according to claim 1, characterized in that: A guide rail (7) is connected to the second mounting plate (131). The guide rail (7) is arranged along the length direction of the second linear module (13). A slider (71) is slidably arranged on the guide rail (7). A ninth mounting plate (711) is connected to the slider (71). The bearing seat (4) is connected to the ninth mounting plate (711). A first fixing block (1311) and a second fixing block (1312) are respectively connected to opposite sides of the second mounting plate (131). The second fixing block (1312) is engaged with the bearing seat (4). On the guide rail (7), the slider (71) is located between the first fixed block (1311) and the second fixed block (1312). A guide rod (8) is fixedly connected to the first fixed block (1311). A guide block (81) is slidably arranged on the guide rod (8). The guide block (81) is connected to the ninth mounting plate (711). A compression spring (811) is sleeved on the guide rod (8). One end of the compression spring (811) abuts against the first fixed block (1311), and the other end abuts against the guide block (81).

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