Flatness detection device and flatness detection method

Abstract

This invention relates to the field of flatness testing technology, and discloses a flatness testing device and a flatness testing method. When testing the test surface of a structure under test using this flatness testing device, a passive detection component is first used in conjunction with a laser emitter and a laser receiver to perform a rough inspection of the test surface. After the rough inspection determines all secondary inspection positions, an active detection component is then used in conjunction with a laser emitter and a laser receiver to perform a fine inspection of each secondary inspection position. Compared with related technologies, this invention effectively improves both testing efficiency and testing accuracy.

Description

Technical Field

[0001] This invention relates to the field of flatness testing technology, and more particularly to a flatness testing device and a flatness testing method. Background Technology

[0002] Currently, the methods for detecting structural flatness are mainly divided into two categories: contact detection method and non-contact detection method. Although the contact detection method has high detection accuracy, it has low detection efficiency and cannot quickly screen deformed areas. Therefore, the non-contact detection method is usually used for flatness detection.

[0003] Currently, non-contact detection methods in related technologies are mainly divided into two categories. One category uses laser sensors to detect by taking points and surfaces, which has high detection accuracy but the detection efficiency still needs to be improved. The other category uses a laser emitter to emit laser light and a laser receiver to receive the laser light. The normal deformation of the structure is determined based on the normal height of the received laser light, or the flatness of the structure is determined based on whether the laser receiver can receive the laser light. However, the detection accuracy still needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a flatness detection device and a flatness detection method to solve the above-mentioned problems existing in non-contact detection methods in related technologies.

[0005] A flatness testing device includes a testing platform, a second track, a second mounting base, two first tracks, and two first mounting bases. The platform surface is used to support the structure to be tested. The two first tracks are spaced apart along a first direction and are fixedly mounted on the platform surface. Each first track extends along a second direction. The two first mounting bases are slidably connected to the two first tracks in a one-to-one correspondence. The two ends of the second track in the extension direction are fixedly connected to the two first mounting bases in a one-to-one correspondence. The second mounting bases are slidably connected to the second tracks. The flatness testing device also includes a laser detection structure, which includes: A laser emitting structure includes a laser emitter for emitting a laser beam and disposed on a first mounting base thereon; A laser receiving structure includes a laser receiver, a passive detection element, and an active detection component. The laser receiver is slidably disposed on a second mounting base along a third direction and is used to receive a laser beam emitted by a laser emitter. The first direction, the second direction, and the third direction are perpendicular to each other. The passive detection element can be selectively and detachably connected to the laser receiver. The passive detection element has a detection contact horizontal plane or a detection contact vertical line for contacting the test surface of the structure under test. The active detection component includes an active detection element and a first lifting drive element. The active detection element can be selectively and detachably connected to the laser receiver. When the active detection element is connected to the laser receiver, the fixed end of the first lifting drive element is detachably connected to the second mounting base, and the lifting end of the first lifting drive element is detachably connected to the laser receiver. The first lifting drive element is used to drive the laser receiver to move up and down along the third direction. The active detection element has a detection contact point for contacting the test surface of the structure under test.

[0006] As an alternative to the aforementioned flatness detection device, the two ends of the second track extension direction are detachably and fixedly connected to the two first mounting seats one-to-one.

[0007] As an alternative to the aforementioned flatness detection device, both ends of the second track extension direction are detachably and fixedly connected to the two first mounting seats one-to-one by the first magnetic suction components.

[0008] As an optional solution for the above-mentioned flatness detection device, one of the two first mounting seats is a first sub-mounting seat. The laser emitting structure further includes a second lifting drive component. The fixed end of the second lifting drive component is fixedly connected to the first sub-mounting seat, and the lifting end of the second lifting drive component is fixedly connected to the laser emitter. The second lifting drive component is used to drive the laser emitter to move up and down along the third direction.

[0009] As an optional solution for the aforementioned flatness detection device, the laser emitting structure further includes a guide assembly. The guide assembly includes a third track fixedly connected to the first sub-mount and extending along the third direction, and a first roller that rolls in cooperation with the third track. The first roller is rotatably connected to the lifting end of the second lifting drive member about its own central axis.

[0010] As an optional solution to the above-mentioned flatness detection device, the flatness detection device further includes a first translation drive assembly. The first translation drive assembly includes a first translation drive member fixedly connected to the first sub-mount, a gear that is pulsatorically connected to the output end of the first translation drive member, and a rack that meshes with the gear. The rack is fixedly connected to the detection platform and extends along the second direction.

[0011] As an optional solution to the above-mentioned flatness detection device, the flatness detection device further includes a second translation drive assembly, the second translation drive assembly including a second translation drive member fixedly connected to the second mounting base, and a drive wheel that is throttlely connected to the output end of the second translation drive member; The second track is provided with a first sub-track groove extending along its own extension direction, and the second translation drive is used to drive the drive wheel to roll along the first sub-track groove to move the laser receiving structure.

[0012] As an alternative to the aforementioned flatness detection device, the active detection component includes a body and an elastic deformation detection part connected to the body, wherein the elastic deformation detection part is provided with the detection contact point.

[0013] A flatness testing method is used to test the flatness of a structure under test using the aforementioned flatness testing device; the passive testing component is equipped with a detection contact water line; the flatness testing method includes: After the detection contact water line is brought into contact with the test surface of the structure to be tested, the detection contact water line is moved on the test surface, and the height offset is judged in real time whether it is within the preset offset range. The height offset is the absolute value of the height difference between the center line of the receiving optical axis of the laser receiver and the center line of the emitting optical axis of the laser emitter. If the height offset is not within the preset offset range, then the current position of the detected water contact line is designated as the secondary inspection position; After the surface to be tested is completely detected by the detection of the contact water line, the passive detection component is detached from the laser receiver; the active detection component is connected to the laser receiver, and the first lifting drive component is connected to the laser receiver and the second mounting base; For each of the secondary inspection locations, a preset number of inspection points are selected; each of the inspection points at each of the secondary inspection locations is inspected sequentially through the inspection contact points; The method for detecting a single point to be detected through the detection contact point includes: controlling the first lifting drive to bring the detection contact point into contact with the point to be detected; controlling the first lifting drive to move the detection contact point up and down until the center line of the receiving optical axis of the laser receiver coincides with the center line of the emitting optical axis of the laser emitter, and recording the lifting distance; and determining the flatness at the point to be detected based on the lifting distance.

[0014] As an alternative to the above-mentioned flatness detection method, both ends of the second track extension direction are detachably and fixedly connected to the two first mounting seats one by one by the first magnetic suction components; the laser emitter is height-adjustable along the third direction and is mounted on one of the first mounting seats. Before controlling the contact line of the detection water to make contact with the test surface of the structure under test, the following steps are also included: Determine whether the center line of the emission optical axis of the laser emitter is collinear with the center line of the receiving optical axis of the laser receiver; If the center line of the emission optical axis of the laser emitter is not collinear with the center line of the receiving optical axis of the laser receiver, then adjust the height of the laser emitter, and / or adjust the horizontal setting position of the laser emitter, and / or adjust the angle between the second track and the two first tracks until the center line of the emission optical axis of the laser emitter is collinear with the center line of the receiving optical axis of the laser receiver.

[0015] Beneficial effects: This invention provides a flatness detection device and a flatness detection method. When the flatness detection device detects the surface of the structure under test, a passive detection component is first used in conjunction with a laser emitter and a laser receiver to perform a rough inspection of the surface under test. After the rough inspection determines all secondary inspection positions, an active detection component is then used in conjunction with a laser emitter and a laser receiver to perform a fine inspection of each secondary inspection position. Compared with related technologies, this invention effectively improves both detection efficiency and detection accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the flatness detection device in an embodiment of the present invention; Figure 2 This is a schematic diagram of the first part of the flatness detection device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the second part of the flatness detection device in an embodiment of the present invention; Figure 4 This is a schematic diagram of the laser emitting structure in an embodiment of the present invention; Figure 5 This is a partial structural schematic diagram of the laser emitting structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the third part of the flatness detection device in an embodiment of the present invention; Figure 7 This is a schematic diagram of the fourth part of the flatness detection device in an embodiment of the present invention; Figure 8 This is a schematic diagram of the fifth part of the flatness detection device in an embodiment of the present invention; Figure 9This is a schematic diagram of the sixth part of the flatness detection device in an embodiment of the present invention; Figure 10 This is a schematic diagram of the seventh part of the flatness detection device in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of the second track in an embodiment of the present invention; Figure 12 This is a flowchart of the flatness detection method in an embodiment of the present invention.

[0017] In the picture: 100. The structure to be tested; 1. Testing platform; 2. Second track; 21. First sub-track slot; 22. Second sub-track slot; 23. Third sub-track slot; 3. Second mounting base; 31. Auxiliary slider; 32. Second roller; 4. First track; 5. First mounting base; 6. Laser emitting structure; 61. Laser emitter; 62. Second lifting drive component; 63. Third track; 64. First roller; 65. Second magnetic suction component; 7. Laser receiving structure; 71. Laser receiver; 72. Passive detection component; 73. Active detection component; 74. First lifting drive component; 75. Sleeve; 76. Sliding rod; 8. First magnetic chuck; 9. First translation drive assembly; 91. First translation drive component; 92. Gear; 93. Rack; 10. Second translation drive assembly; 101. Second translation drive component; 102. Drive wheel. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] This invention provides a flatness detection device, such as... Figures 1 to 3 , Figures 6 to 11 As shown, the flatness testing device includes a testing platform 1, a second track 2, a second mounting base 3, two first tracks 4, and two first mounting bases 5. The platform 1 is used to support the structure 100 to be tested. The two first tracks 4 are distributed at intervals along a first direction and are fixedly installed on the platform 1. Each first track 4 extends along a second direction. The two first mounting bases 5 are slidably connected to the two first tracks 4 in a one-to-one correspondence. The two ends of the extension direction of the second track 2 are fixedly connected to the two first mounting bases 5 in a one-to-one correspondence. The second mounting base 3 is slidably connected to the second track 2.

[0023] like Figures 1 to 10As shown, the flatness detection device also includes a laser detection structure, which comprises a laser emitting structure 6 and a laser receiving structure 7. The laser emitting structure 6 includes a laser emitter 61 for emitting a laser beam and disposed on a first mounting base 5 thereon. The laser receiving structure 7 includes a laser receiver 71, a passive detection component 72, and an active detection component. The laser receiver 71 is slidably disposed on a second mounting base 3 along a third direction and is used to receive the laser beam emitted by the laser emitter 61. The first direction, the second direction, and the third direction are perpendicular to each other. The passive detection component 72 can be selectively and detachably connected to the laser receiver 71. The passive detection component 72 is provided with a method for contacting the laser beam emitted by the laser receiver 61. The active detection component includes an active detection element 73 and a first lifting drive element 74. The active detection element 73 can be selectively and detachably connected to the laser receiver 71. When the active detection element 73 is connected to the laser receiver 71, the fixed end of the first lifting drive element 74 is detachably connected to the second mounting base 3, and the lifting end of the first lifting drive element 74 is detachably connected to the laser receiver 71. The first lifting drive element 74 is used to drive the laser receiver 71 to move up and down in a third direction. The active detection element 73 is provided with a detection contact point for contacting the surface to be tested of the structure 100.

[0024] Taking the passive detection component 72 as an example, which has a detection contact horizontal line for contacting the test surface of the structure under test 100.

[0025] When the flatness detection device detects the test surface of the structure 100 under test, the passive detection component 72 is first connected to the laser receiver 71; then the second mounting base 3 is controlled to move along the extension direction of the second track 2 and / or along the second direction, so that the detection contact water line contacts the test surface of the structure 100 under test; then the detection contact water line is controlled to move on the test surface, and the height offset is judged in real time whether it is within the preset offset range. The height offset is the absolute value of the height difference between the center line of the receiving optical axis of the laser receiver 71 and the center line of the emitting optical axis of the laser emitter 61; if the height offset is not within the preset offset range, the current position of the detection contact water line is calibrated as the secondary test position.

[0026] After the surface to be tested is inspected by detecting the straight line of contact with water, the passive detection component 72 is detached from the laser receiver 71, the active detection component 73 is connected to the laser receiver 71, and the first lifting drive component 74 is connected to the laser receiver 71 and the second mounting base 3. A preset number of test points are selected for each secondary inspection position. Then, each test point at each secondary inspection position is inspected sequentially through the detection contact point. Specifically, when inspecting a single test point through the detection contact point, the first lifting drive component 74 is first controlled to drive the detection contact point to contact the test point. Then, the first lifting drive component 74 is controlled to drive the detection contact point to rise and fall until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, and the rising and falling distance is recorded. The flatness at the test point is determined based on the rising and falling distance. Specifically, if the secondary inspection position on the surface to be tested is a protrusion, the first lifting drive 74 drives the detection contact point to descend until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, at which point the detection contact point presses against the surface to be tested along a third direction; if the secondary inspection position on the surface to be tested is a depression, the first lifting drive 74 drives the detection contact point to rise until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, at which point the detection contact point separates from the surface to be tested along a third direction.

[0027] It is understandable that when the flatness detection device detects the test surface of the structure 100, the passive detection component 72 is first used in conjunction with the laser emitter 61 and the laser receiver 71 to perform a rough inspection of the test surface. After the rough inspection determines all the secondary inspection positions, the active detection component is then used in conjunction with the laser emitter 61 and the laser receiver 71 to perform a fine inspection of each secondary inspection position.

[0028] This effectively improves both detection efficiency and detection accuracy compared to related technologies.

[0029] Specifically, the preset offset range is set according to the flatness accuracy requirements. The preset quantity is an empirical value obtained from a large number of previous experiments. The center line of the emission optical axis of the laser emitter 61 refers to the point in which the center line of the emission optical axis of the laser emitter 61 coincides with the center of gravity of the laser spot energy on any cross-section perpendicular to the propagation direction during the propagation of the laser beam.

[0030] Specifically, in this embodiment, the first lifting drive component 74 is exemplaryly configured as a cylinder. In other embodiments, the first lifting drive component 74 may also be configured as a hydraulic cylinder or an electric actuator, or other linear drive component. The number of first lifting drive components 74 is determined according to actual working conditions.

[0031] The specific structures of the laser emitter 61 and the laser receiver 71 are existing technologies and will not be described in detail here.

[0032] Optionally, such as Figures 1 to 3 , Figure 8 As shown, the two ends of the second track 2 extending in the same direction are detachably and fixedly connected to the two first mounting bases 5. This arrangement allows the detection accuracy of the flatness detection device to be further improved by adjusting the angle between the second track 2 and the two first tracks 4 before the control detection contact water line contacts the test surface of the structure under test 100. This adjustment allows the center line of the emission optical axis of the laser emitter 61 to be collinear with the center line of the receiving optical axis of the laser receiver 71.

[0033] Preferably, in this embodiment, as Figures 1 to 3 , Figure 8 As shown, both ends of the second track 2 extending in the direction of extension are detachably and fixedly connected to the two first mounting bases 5 one-to-one by the first magnetic suction element 8. This allows for fine adjustment of the angle between the second track 2 and the two first tracks 4, thereby further improving the detection accuracy of the flatness detection device; secondly, it improves the efficiency of assembling and disassembling the second track 2.

[0034] In other embodiments, a through hole can be provided on the second track 2, and an elongated hole can be provided on the first mounting base 5. The length direction of the elongated hole is parallel to the extension direction of the first track 4. The bolt passes through the through hole and the elongated hole and is connected to the nut. This also allows for fine adjustment of the included angle between the second track 2 and the two first tracks 4.

[0035] Optionally, in this embodiment, as Figures 1 to 5 As shown, one of the two first mounting bases 5 is a first sub-mounting base. The laser emitting structure 6 also includes a second lifting drive component 62. The fixed end of the second lifting drive component 62 is fixedly connected to the first sub-mounting base, and the lifting end of the second lifting drive component 62 is fixedly connected to the laser emitter 61. The second lifting drive component 62 is used to drive the laser emitter 61 to move up and down in a third direction. This allows the laser emitter 61 to be adjusted so that its emission axis centerline is collinear with the laser receiver 71's receiving axis centerline before the control detection contact line contacts the surface to be tested of the structure 100. This further improves the detection accuracy of the flatness detection device.

[0036] In this embodiment, the second lifting drive component 62 is exemplaryly configured as a cylinder. In other embodiments, the second lifting drive component 62 may also be configured as a hydraulic cylinder or an electric actuator, or other linear drive component. The number of second lifting drive components 62 is determined according to actual working conditions.

[0037] Further, optionally, in this embodiment, as Figure 4 and Figure 5As shown, the laser emitting structure 6 also includes a guiding assembly, which includes a third track 63 fixedly connected to the first sub-mount and extending along a third direction, and a first roller 64 that rolls in cooperation with the third track 63. The first roller 64 is rotatably connected to the lifting end of the second lifting drive 62 about its own central axis. This guides the laser emitter 61 to move along a third direction, improving the reliability of the flatness detection device.

[0038] Further, optionally, in this embodiment, as Figure 4 and Figure 5 As shown, an exemplary configuration uses two guide components, spaced apart along the extension direction of the first track 4, with the second lifting drive 62 located between the two guide components. Further optionally, in this embodiment, the third track 63 of the two guide components is fixedly connected to further improve the reliability of the flatness detection device.

[0039] Further, optionally, in this embodiment, as Figure 4 and Figure 5 As shown, a second magnetic chuck 65 is fixedly connected to the lifting end of the second lifting drive component 62, and the laser emitter 61 is fixedly connected to the lifting end of the second lifting drive component 62 via the second magnetic chuck 65. By adjusting the position of the laser emitter 61, the center line of the emitting optical axis of the laser emitter 61 can be adjusted to be collinear with the center line of the receiving optical axis of the laser receiver 71, thereby further improving the detection accuracy of the flatness detection device and facilitating the installation, disassembly, maintenance, and replacement of the laser emitter 61. In other embodiments, the laser emitter 61 can also be fixedly connected to the lifting end of the second lifting drive component 62 by means of plug-in, snap-fit, welding, or threaded connection.

[0040] Among them, such as Figures 1 to 3 As shown, the flatness detection device also includes a first translation drive assembly 9 and a second translation drive assembly 10. The first translation drive assembly 9 drives the laser emitting structure 6, the two first mounting bases 5, the second track 2, the second mounting base 3, the laser receiving structure 7, and the second translation drive assembly 10 to move synchronously along the extension direction of the first track 4. The second translation drive assembly 10 drives the laser receiving structure 7 to move along the extension direction of the second track 2.

[0041] Optionally, in this embodiment, as Figures 1 to 3As shown, the first translation drive assembly 9 includes a first translation drive member 91 fixedly connected to the first sub-mounting base, a gear 92 driven by the output end of the first translation drive member 91, and a rack 93 meshing with the gear 92. The rack 93 is fixedly connected to the detection platform 1 and extends along the second direction. The first translation drive member 91 drives the gear 92 and rack 93 to mesh, thereby driving the laser emitting structure 6, the two first mounting bases 5, the second track 2, the second mounting base 3, the laser receiving structure 7, and the second translation drive assembly 10 to move synchronously along the extension direction of the first track 4. In this embodiment, the first translation drive member 91 is a rotary motor.

[0042] In other embodiments, a lead screw and nut assembly can also be used as a transmission assembly to drive the gear 92 and rack 93 to mesh, thereby driving the laser emitting structure 6, the two first mounting seats 5, the second track 2, the second mounting seat 3, the laser receiving structure 7, and the second translation drive assembly 10 to move synchronously along the extension direction of the first track 4.

[0043] Optionally, in this embodiment, as Figures 6 to 11 As shown, the second translation drive assembly 10 includes a second translation drive member 101 fixedly connected to the second mounting base 3, and a drive wheel 102 pulsatorically connected to the output end of the second translation drive member 101. The second track 2 is provided with a first sub-track groove 21 extending along its own extension direction. The second translation drive member 101 is used to drive the drive wheel 102 to roll along the first sub-track groove 21 to move the laser receiving structure 7. Specifically, during the process of the second translation drive member 101 driving the drive wheel 102 to rotate around its own central axis, the drive wheel 102 drives the laser receiving structure 7 to move through the friction between itself and the inner wall of the first sub-track groove 21. The structure is simple and highly integrated.

[0044] In this embodiment, the second translation drive 101 is a rotary motor.

[0045] In other embodiments, a linear drive such as an electric actuator can be used to drive the laser receiving structure 7 to move along the extension direction of the second track 2.

[0046] Further, optionally, in this embodiment, as Figures 9 to 11 As shown, the second track 2 is further provided with a second sub-track groove 22 extending along its own extension direction, and the second mounting base 3 is fixedly connected to an auxiliary slider 31 that slides with the second sub-track groove 22. This further improves the stability and reliability of the laser receiving structure 7 moving along the extension direction of the second track 2.

[0047] Further, optionally, in this embodiment, as Figures 9 to 11As shown, there are two second sub-track slots 22, and two sets of auxiliary sliders 31 are provided. The two second sub-track slots 22 and the two sets of auxiliary sliders 31 are arranged in a one-to-one correspondence. The two second sub-track slots 22 are located on both sides of the first sub-track slot 21 along the first direction. Further optionally, in this embodiment, each set of auxiliary sliders 31 includes two auxiliary sliders 31. This is to further improve the stability and reliability of the laser receiving structure 7 moving along the extension direction of the second track 2.

[0048] Further, optionally, in this embodiment, as Figures 9 to 11 As shown, the second track 2 is also provided with a third sub-track groove 23 extending along its own extension direction. The second roller 32 is rotatably connected to the second mounting base 3 around its own central axis and rolls in the third sub-track groove 23. This further improves the stability and reliability of the laser receiving structure 7 moving along the extension direction of the second track 2.

[0049] Further, optionally, in this embodiment, as Figures 9 to 11 As shown, there are two third sub-track slots 23, and two sets of second rollers 32 are arranged around them. The two third sub-track slots 23 and the two sets of second rollers 32 are arranged in a one-to-one correspondence, and the two third sub-track slots 23 are located below the two second sub-track slots 22 in a one-to-one correspondence along the third direction. This is to further improve the stability and reliability of the laser receiving structure 7 moving along the extension direction of the second track 2.

[0050] Optionally, the active detection component 73 includes a body and an elastic deformation detection part connected to the body, the elastic deformation detection part being provided with detection contact points. This reduces the risk of the active detection component 73 damaging the surface to be tested.

[0051] In this embodiment, as Figures 8 to 10 As shown, the exemplary active monitoring component is a probe, with an elastic deformation detection section at the tip of the probe and a detection contact point. The passive detection component 72 is a roller rotatably connected to the laser receiver 71 around its own central axis. The axial direction of the roller is perpendicular to the third direction, and a detection contact horizontal line is formed when the outer circumferential surface of the roller contacts the surface being measured.

[0052] Specifically, when the passive detection element 72 is provided with a detection contact horizontal surface, the passive detection element 72 is a block structure.

[0053] Specifically, in this embodiment, as Figures 6 to 10As shown, the laser receiving structure 7 also includes a sleeve 75 and a sliding rod 76 that slide along a third direction. The sleeve 75 is fixedly connected to the second mounting base 3. One end of the sliding rod 76 along its length is fixedly connected to the laser receiver 71 via a third magnetic attraction element. The other end of the sliding rod 76 along its length is used to connect to the passive detection element 72 and the active monitoring element. This allows the laser receiver 71 to slide along a third direction on the second mounting base 3, and facilitates the installation, removal, and maintenance of the laser receiver 71.

[0054] This invention also provides a flatness detection method for detecting the flatness of a structure 100 under test using the aforementioned flatness detection device. This flatness detection method effectively improves both detection efficiency and accuracy compared to related technologies. Figures 1 to 12 As shown, taking the passive detection component 72 having a detection contact horizontal line for contacting the test surface of the structure under test 100 as an example, this flatness detection method includes: S10. Assemble the laser emitter 61 onto the lifting end of the first lifting drive component 74; assemble the second mounting base 3, the laser receiver 71, and the second translation drive component 10 as a whole onto the second track 2.

[0055] S20. Determine whether the center line of the transmitting optical axis of the laser emitter 61 and the center line of the receiving optical axis of the laser receiver 71 are collinear.

[0056] If the center line of the emission optical axis of the laser emitter 61 is not collinear with the center line of the receiving optical axis of the laser receiver 71, then proceed to step S30. If the center line of the emission optical axis of the laser emitter 61 is collinear with the center line of the receiving optical axis of the laser receiver 71, then proceed to step S40.

[0057] S30. Adjust the height of the laser emitter 61, and / or adjust the horizontal setting position of the laser emitter 61, and / or adjust the angle between the second track 2 and the two first tracks 4 until the center line of the emission optical axis of the laser emitter 61 is collinear with the center line of the receiving optical axis of the laser receiver 71. Then proceed to step S40.

[0058] Specifically, the height of the light emitter is adjusted by the second lifting drive 62. The horizontal setting position of the laser emitter 61 is adjusted by moving the magnetic position of the laser emitter 61. The angle between the second track 2 and the two first tracks 4 is adjusted by moving the magnetic position of the second track 2.

[0059] Preferably, in this embodiment, the extension direction of the first track 4 is parallel to the first direction.

[0060] Preferably, in this embodiment, when the center line of the emission optical axis of the laser emitter 61 is collinear with the center line of the receiving optical axis of the laser receiver 71, the extension direction of the second track 2 is parallel to the second direction.

[0061] S40, control the contact water line to contact the test surface of the structure under test 100.

[0062] Specifically, by controlling the first translation drive 91 and the second translation drive 101, the position of the passive detection element 72 is adjusted so that the detection contact water line of the passive detection element 72 contacts the test surface of the structure 100 under test.

[0063] S50. Control the movement of the detection contact water line on the test surface and determine in real time whether the height offset is within the preset offset range. The height offset is the absolute value of the height difference between the center line of the receiving optical axis of the laser receiver 71 and the center line of the emitting optical axis of the laser emitter 61.

[0064] For example, the passive detection component 72 can be moved from one end of the surface to be tested to the other end along the extension direction of the first track 4 by the first translation drive component 91. After the detection is completed, the passive detection component 72 can be moved along the extension direction of the second track 2 by the second translation drive component 101 to the undetected area on the detection surface. Then, the passive detection component 72 can be moved from one end of the surface to be tested to the other end along the extension direction of the first track 4 by the first translation drive component 91. The above process is repeated until the surface to be tested is completely detected.

[0065] If the height offset is not within the preset offset range, then proceed to step S60.

[0066] S60, The current position of the calibration test contact water line is the secondary test position.

[0067] S70. Determine whether the surface to be tested has been completely tested by detecting the straight line of contact with water.

[0068] If the surface to be tested is completely detected by detecting the contact line with water, proceed to step S80. If the surface to be tested is not completely detected by detecting the contact line with water, return to step S50 until the surface to be tested is completely detected by detecting the contact line with water.

[0069] S80. Disconnect the passive detection component 72 from the laser receiver 71; connect the active detection component 73 to the laser receiver 71; and connect the first lifting drive component 74 to the laser receiver 71 and the second mounting base 3.

[0070] S90. For each secondary inspection location, a preset number of inspection points are taken.

[0071] S100. The detection contact points are used to sequentially detect each detection point at each secondary detection location.

[0072] The method for detecting a single point to be tested by detecting the contact point includes: controlling the first lifting drive 74 to drive the detection contact point to contact the point to be tested; controlling the first lifting drive 74 to drive the detection contact point to rise and fall until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, and recording the lifting distance; determining the flatness at the point to be tested based on the lifting distance.

[0073] Specifically, if the secondary inspection position on the surface to be tested is a protrusion, the first lifting drive 74 drives the detection contact point to descend until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, at which point the detection contact point presses against the surface to be tested along a third direction; if the secondary inspection position on the surface to be tested is a depression, the first lifting drive 74 drives the detection contact point to rise until the center line of the receiving optical axis of the laser receiver 71 coincides with the center line of the emitting optical axis of the laser emitter 61, at which point the detection contact point separates from the surface to be tested along a third direction.

[0074] The specific method for determining the flatness of the point to be tested based on the lifting distance is existing technology and will not be elaborated here.

[0075] Therefore, the flatness detection method is used to detect the flatness of the structure under test 100, which effectively improves both detection efficiency and detection accuracy compared with related technologies.

[0076] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art should understand that the scope of disclosure involved in the present invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalent features without departing from the above-disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A flatness testing device, characterized in that, The device includes a testing platform (1), a second track (2), a second mounting base (3), two first tracks (4), and two first mounting bases (5). The platform (1) is used to support the structure to be tested (100). The two first tracks (4) are spaced apart along a first direction and are fixedly mounted on the platform (1). Each first track (4) extends along a second direction. The two first mounting bases (5) are slidably connected to the two first tracks (4) in a one-to-one correspondence. The two ends of the extension direction of the second track (2) are fixedly connected to the two first mounting bases (5) in a one-to-one correspondence. The second mounting base (3) is slidably connected to the second track (2). The flatness testing device also includes a laser testing structure, which includes: The laser emitting structure (6) includes a laser emitter (61) for emitting a laser beam and disposed on a first mounting base (5). The laser receiving structure (7) includes a laser receiver (71), a passive detection element (72), and an active detection component; the laser receiver (71) is slidably disposed on the second mounting base (3) along a third direction and is used to receive the laser beam emitted by the laser emitter (61), wherein the first direction, the second direction, and the third direction are perpendicular to each other; the passive detection element (72) can be selectively and detachably connected to the laser receiver (71), and the passive detection element (72) is provided with a detection contact horizontal plane or a detection contact vertical line for contacting the test surface of the structure under test (100); the active detection component includes an active detection element (73). The first lifting drive (74) and the active detection (73) can be selectively and detachably connected to the laser receiver (71). When the active detection (73) is connected to the laser receiver (71), the fixed end of the first lifting drive (74) is detachably connected to the second mounting base (3), and the lifting end of the first lifting drive (74) is detachably connected to the laser receiver (71). The first lifting drive (74) is used to drive the laser receiver (71) to move up and down along the third direction. The active detection (73) is provided with a detection contact point for contacting the test surface of the structure under test (100).

2. The flatness detection device according to claim 1, characterized in that, The two ends of the second track (2) in the extension direction are detachably and fixedly connected to the two first mounting seats (5) in a corresponding manner.

3. The flatness detection device according to claim 2, characterized in that, Both ends of the second track (2) in the extension direction are detachably and fixedly connected to the two first mounting seats (5) one by one by the first magnetic suction (8).

4. The flatness testing device according to any one of claims 1-3, characterized in that, One of the two first mounting bases (5) is a first sub-mounting base. The laser emitting structure (6) also includes a second lifting drive (62). The fixed end of the second lifting drive (62) is fixedly connected to the first sub-mounting base, and the lifting end of the second lifting drive (62) is fixedly connected to the laser emitter (61). The second lifting drive (62) is used to drive the laser emitter (61) to move up and down along the third direction.

5. The flatness detection device according to claim 4, characterized in that, The laser emitting structure (6) further includes a guide assembly, which includes a third track (63) fixedly connected to the first sub-mount and extending along the third direction, and a first roller (64) rollingly engaged with the third track (63). The first roller (64) is rotatably connected to the lifting end of the second lifting drive (62) about its own central axis.

6. The flatness detection device according to claim 4, characterized in that, The flatness detection device further includes a first translation drive assembly (9), which includes a first translation drive member (91) fixedly connected to the first sub-mount, a gear (92) that is pulsatorically connected to the output end of the first translation drive member (91), and a rack (93) that meshes with the gear (92). The rack (93) is fixedly connected to the detection platform (1) and extends along the second direction.

7. The flatness testing device according to any one of claims 1-3, characterized in that, The flatness detection device further includes a second translation drive assembly (10), which includes a second translation drive member (101) fixedly connected to the second mounting base (3) and a drive wheel (102) that is pulsatorically connected to the output end of the second translation drive member (101). The second track (2) is provided with a first sub-track groove (21) extending along its own extension direction. The second translation drive (101) is used to drive the drive wheel (102) to roll along the first sub-track groove (21) to drive the laser receiving structure (7) to move.

8. The flatness testing device according to any one of claims 1-3, characterized in that, The active detection component (73) includes a body and an elastic deformation detection part connected to the body, wherein the elastic deformation detection part is provided with the detection contact point.

9. A method for detecting flatness, characterized in that, The device is used to detect the flatness of the structure (100) under test using the flatness detection device according to any one of claims 1-8; the passive detection element (72) is provided with a detection line for contacting water; the flatness detection method includes: After the detection contact water line is brought into contact with the test surface of the structure to be tested (100), the detection contact water line is moved on the test surface, and the height offset is judged in real time whether it is within the preset offset range. The height offset is the absolute value of the height difference between the receiving optical axis center line of the laser receiver (71) and the emitting optical axis center line of the laser emitter (61). If the height offset is not within the preset offset range, then the current position of the detected water contact line is designated as the secondary inspection position; After the surface to be tested is detected by the detection contact water line, the passive detection component (72) is detached from the laser receiver (71); the active detection component (73) is connected to the laser receiver (71), and the first lifting drive component (74) is connected to the laser receiver (71) and the second mounting base (3). For each of the secondary inspection locations, a preset number of inspection points are selected; each of the inspection points at each of the secondary inspection locations is inspected sequentially through the inspection contact points; The method for detecting a single point to be detected through the detection contact point includes: controlling the first lifting drive (74) to drive the detection contact point to contact the point to be detected; controlling the first lifting drive (74) to drive the detection contact point to rise and fall until the center line of the receiving optical axis of the laser receiver (71) coincides with the center line of the emitting optical axis of the laser emitter (61), and recording the lifting distance; determining the flatness at the point to be detected based on the lifting distance.

10. The flatness detection method according to claim 9, characterized in that, Both ends of the second track (2) in the extension direction are detachably and fixedly connected to the two first mounting seats (5) one by one by the first magnetic suction (8); the laser emitter (61) is height-adjustable along the third direction and is mounted on one of the first mounting seats (5); Before controlling the contact line of the detection water to contact the test surface of the structure under test (100), the following steps are also included: Determine whether the center line of the emission optical axis of the laser emitter (61) and the center line of the receiving optical axis of the laser receiver (71) are collinear; If the center line of the emission optical axis of the laser emitter (61) is not collinear with the center line of the receiving optical axis of the laser receiver (71), then adjust the height of the laser emitter (61), and / or adjust the horizontal setting position of the laser emitter (61), and / or adjust the angle between the second track (2) and the two first tracks (4) until the center line of the emission optical axis of the laser emitter (61) is collinear with the center line of the receiving optical axis of the laser receiver (71).

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