Optical detection method for lock head profile

Abstract

The present application provides a lock head appearance optical detection method, comprising the following steps: S1, controlling the lock head to be located at a predetermined position between a detection device and a display device, adjusting the transverse surface of the locking part of the lock head to be opposite to the detection device and the display device, and completing the first appearance optical detection; S2, adjusting the longitudinal surface of the locking part of the lock head to be opposite to the detection device and the display device, and completing the second appearance optical detection; the above-mentioned appearance optical detection controls the display device surface to form a detection pattern of a predetermined size according to the distance between the locking part and the detection device and the distance between the locking part and the display device, observes the profile of the detection pattern on the display device surface through the detection device, compares the profile of the detection pattern observed by the detection device with standard data, and further judges the deviation existing in the appearance of the locking part of the lock head. The method can improve the efficiency of lock head appearance detection, and can quantitatively analyze the deviation existing in the appearance of the lock head, thereby improving the precision of appearance detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shape detection, in particular to a lock head shape optical detection method. BACKGROUND

[0002] The shape of the lock head determines the accuracy and stability of the high-speed rail carriage positioning, and the lock head profile needs to be detected during the production of the lock head.

[0003] The traditional shape detection process is manually performed by a detection sheet containing a detection gap. The lock head is fixed on the surface of the detection platform, and the detection sheet is slid relative to the lock head. The lock head that meets the shape size can pass through the detection gap, and the smooth passing of the detection sheet through the lock head means that the lock head shape meets the positioning requirements.

[0004] The traditional detection method is low in efficiency and needs to be manually slid by the detection component, which is low in detection efficiency. At the same time, the traditional shape detection method can only detect whether the lock head shape is qualified, and cannot quantitatively analyze the deviation of the lock head shape, so the accuracy of the shape detection is limited. SUMMARY

[0005] In view of the above problems, the present application provides a lock head shape optical detection method, which can improve the efficiency of lock head shape detection and quantitatively analyze the deviation of the lock head shape, thereby improving the accuracy of shape detection.

[0006] To solve the above problems, the technical scheme adopted by the present application is:

[0007] The lock head shape optical detection method comprises a base part and a locking part. The shape of the locking part is detected by using a lock head shape optical detection device. The lock head shape optical detection device comprises a display device and a detection device arranged opposite to each other. The surface of the display device can form a predetermined detection pattern. The method comprises the following steps: S1, controlling the lock head to be located at a predetermined position between the detection device and the display device, adjusting the transverse surface of the locking part of the lock head to be opposite to the detection device and the display device, and completing the first optical shape detection; S2, adjusting the longitudinal surface of the locking part of the lock head to be opposite to the detection device and the display device, and completing the second optical shape detection. The above-mentioned optical shape detection controls the display device surface to form a detection pattern of a predetermined size according to the distance between the locking part and the detection device and the distance between the locking part and the display device. The profile of the detection pattern observed by the detection device is compared with the standard data to judge the deviation of the shape of the locking part of the lock head.

[0008] By the above-mentioned manner, a new detection manner is utilized, the appearance of the locking part can be efficiently and accurately optically detected, the detection process is automatically performed, and the efficiency of the locking part appearance detection is greatly improved; meanwhile, by the optical detection manner, the sliding detection sheet is not needed, the linear size of the locking part which is too large to be detected is not caused, the quantitative detection can be realized by the method, the detection accuracy is higher, by judging the size tolerance of each position of the locking part, the data can be analyzed and summarized, and fed back to the production end, the production process is improved, and the high-quality production of the lock head is realized.

[0009] Preferably, the detection device comprises a detection assembly, further comprises a sliding joint for controlling linear movement of the detection assembly and a telescopic joint for controlling telescopic movement of the detection assembly, and the detection assembly is adjusted to a detection position according to the size of the appearance of the locking part of the lock head.

[0010] Preferably, the base part of the lock head is positioned by a clamping device, the clamping device comprises a connecting part and clamping parts located on both sides of the connecting part, and both ends of the base part are slidably inserted into the clamping parts and locked and fixed.

[0011] Preferably, a first locking assembly which can be telescoped is mounted on the inner wall of the clamping part, the lateral offset distance of the lock head is adjusted by controlling the telescopic length of the two first locking assemblies, the profile of the detection pattern on the surface of the display device is observed by the detection device again, the profile of the detection pattern observed by the detection device is compared with standard data, and whether the appearance of the locking part after lateral offset is qualified is judged.

[0012] Preferably, a second locking assembly is mounted on the inner wall of the clamping part, the second locking assembly comprises four telescopic ends arranged in a matrix, and the four telescopic ends abut against the surface of the base part after being extended.

[0013] Preferably, the deflection of the base part towards the first direction is adjusted by adjusting the telescopic ends on the front and back sides, the profile of the detection pattern on the surface of the display device is observed by the detection device again, the profile of the detection pattern observed by the detection device is compared with standard data, and whether the appearance of the locking part after deflection towards the first direction is qualified is judged.

[0014] Preferably, the deflection of the base part towards the second direction is controlled by adjusting the telescopic ends on the left and right sides, the profile of the detection pattern on the surface of the display device is observed by the detection device again, the profile of the detection pattern observed by the detection device is compared with standard data, and whether the appearance of the locking part after deflection towards the second direction is qualified is judged.

[0015] Preferably, the clamping devices are symmetrically arranged in two groups, and the detection housing is internally provided with a turnover device, the turnover device comprises two electric sliding blocks, a electric turnover shaft is rotationally connected between the two electric sliding blocks, and a deflection shaft is rotationally connected in the middle of the electric turnover shaft, and the two clamping devices are respectively installed on the two sides of the deflection shaft.

[0016] The present application has the following advantages:

[0017] Compared with the prior art, a new detection method is utilized, the appearance of the locking part can be efficiently and accurately optically detected, the detection process is fully automatic, and the efficiency of the locking part appearance detection is greatly improved; meanwhile, through the optical detection method, the sliding detection piece is not needed, the linear size of the locking part that is too large to be detected is not caused, through the method, quantitative detection can be realized, the detection accuracy is higher, through judging the dimensional tolerance of each position of the locking part, data can be analyzed and summarized, and feedback to the production end, the production process is improved, and high-quality production of the lock head is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the lock head in the prior art.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the automatic detection equipment of the present application.

[0020] Figure 3 It is a schematic diagram of the top view structure of the present application. Figure 2

[0021] Figure 4 It is a schematic diagram of the A-A sectional view structure of the present application. Figure 3

[0022] Figure 5 It is a schematic diagram of the B-B sectional view structure of the present application. Figure 3

[0023] Figure 6 It is a schematic diagram of the lock head assembly state of the present application.

[0024] Figure 7 It is a schematic diagram of the front view structure of the present application. Figure 6

[0025] Figure 8 It is a schematic diagram of the enlarged structure at C of the present application. Figure 7

[0026] ​​​​​In the figure: 100, lock head; 110, base part; 120, locking part; 200, detection housing; 300, clamping device; 310, connecting part; 320, clamping part; 321, first locking assembly; 322, second locking assembly; 400, turnover device; 410, electric sliding block; 420, electric turnover shaft; 430, deflection shaft; 500, detection device; 510, sliding joint; 520, telescopic joint; 530, detection assembly; 540, detection positioning rod; 600, display device. DETAILED DESCRIPTION

[0027] The application will be further described below in conjunction with the drawings and examples.

[0028] The train carriage and the car body are positioned and locked by the lock head, which includes the locking part and the base part. The base part cooperates with the groove of the carriage bottom to realize the positioning and locking of the carriage.

[0029] The accuracy of the shape of the base part determines the accuracy of the positioning and locking of the carriage. Therefore, in the last process of lock head production, the shape of the lock head needs to be detected to avoid deviation of the positioning position after the lock head is assembled.

[0030] The traditional shape detection process is manually performed by a detection sheet containing a detection gap. The lock head is fixed on the surface of the detection platform, and the detection sheet is slid relative to the lock head. The lock head that meets the shape size can pass through the detection gap, and the smooth passing of the detection sheet through the lock head means that the shape of the lock head meets the positioning requirements.

[0031] The traditional lock head shape detection process needs to be manually performed by artificial. The traditional detection method is relatively cumbersome, and the detection efficiency is limited. At the same time, the accuracy of the lock head outside detection is limited by the accuracy of the detection sheet and the standard degree of manual operation of the detection personnel. The accuracy of the lock head shape detection cannot reach a high level.

[0032] In order to solve the above problems, with reference to the accompanying drawings Figure 1 -Appendix Figure 8 A lock head shape automatic detection equipment, including detection housing 200, detection housing 200 inside setting has detection device 500 and display device 600, through detection device 500 and display device 600 cooperation, can pass through the optical detection mode to the shape of lock head 100 carries out high efficiency detection, the specific detection process is as follows.

[0033] First, according to the size of the lock head 100 and the position between the detection device 500, the display device 600 and the lock head 100, the detection pattern on the surface of the display device 600 is determined according to the projection relationship, and is enlarged or reduced according to the standard size of the lock head 100; the detection device 500 is located on the other side to analyze the pattern, and judge whether the outline of the detection pattern can be observed. If the detection device 500 cannot detect the outline of the detection pattern of the display device 600, it means that the size of the lock head 100 is too large and does not meet the production requirements; if the outline of the detection pattern observed by the detection device 500 is too large and exceeds the threshold value, it means that the size of the lock head 100 is too small and also does not meet the production requirements.

[0034] Through the above detection method, by using the relationship of image projection, the lock head 100 is placed between the detection device 500 and the display device 600, which can quickly detect the shape of the lock head 100 and quickly judge whether the size of the lock head 100 meets the production requirements, thereby improving the efficiency and accuracy of the detection of the lock head 100.

[0035] After the detection of the first side of the locking part 120 is completed, the whole lock head 100 is rotated by 90°, so that the second side of the locking part 120 is located between the detection device 500 and the display device 600, and the quick detection of the shape of the second side of the locking part 120 is realized. During this detection process, the image displayed by the display device 600 is adaptively adjusted.

[0036] It should be noted that the display device 600 can be a display screen, which displays two detection patterns of different colors (with large color contrast) on the surface of the display device 600, and the shape of the locking part 120 is judged by judging the blocking of the detection pattern.

[0037] Compared with the traditional mechanical detection method, the worker only needs to install the lock head 100 in the predetermined position, and the detection process is automatically performed, so that the detection efficiency is higher. At the same time, the traditional detection method can only judge whether it meets the requirements, and the detection method can realize quantitative detection. The detection pattern on the surface of the display device 600 is analyzed by the detection device 500, so that quantitative detection can be realized, the detection accuracy is higher, the size tolerance of each position of the locking part 120 is judged, the data can be analyzed and summarized, and feedback is provided to the production end, the production process is improved, and high-quality production of the lock head 100 is realized.

[0038] The detection device 500 here comprises a sliding joint 510, an extension joint 520, a detection assembly 530 and a detection positioning rod 540. The detection assembly 530 can be adjusted to different positions by cooperation of the sliding joint 510 and the extension joint 520. Different projection relationships can be formed by adjusting the position of the detection assembly 530, so as to realize efficient detection of different types of lock heads 100. Meanwhile, the position of the detection assembly 530 can be positioned by the detection positioning rod 540, so as to ensure that the detection assembly 530 and the lock head 100 are in a relatively same position for detection, and ensure the accuracy of the image detection result of the detection assembly 530. The detection positioning rod 540 here is adjusted and set according to the width size of the lock head 100.

[0039] In order to realize the rapid feeding and discharging and rotation control of the lock head 100, the detection shell 200 is further provided with a turnover device 400. The turnover device 400 comprises electric sliding blocks 410 which are in sliding connection with the inner wall of the detection shell 200 and can be linearly moved along the vertical direction under electric control. An electric turnover shaft 420 is installed between the two electric sliding blocks 410 and can rotate around the X axis. A deflection shaft 430 is rotationally connected at the center of the electric turnover shaft 420 and can rotate around the Z axis. Clamping devices 300 for limiting the lock head 100 are installed on both sides of the deflection shaft 430. By controlling the rotation of the electric turnover shaft 420, different lock heads 100 can be controlled to be located in the detection shell 200, so as to realize alternate detection. Meanwhile, the lock head 100 in the detection shell 200 can be controlled to rotate 90° by the deflection shaft 430 during detection, so that different sides of the lock head 100 are located between the detection device 500 and the display device 600, and efficient detection is realized.

[0040] The above structure design can quickly adjust the positions of two lock heads 100, so as to meet the requirement of efficient detection of the lock head 100. Meanwhile, the electric control of the lock head 100 lifting, rotation around the X axis and the manual control of the lock head 100 rotation around the Z axis can realize efficient control of the lock head 100 during detection, avoid the design of redundant structure, reduce the operation cost and meet the requirement of efficient detection of the lock head 100.

[0041] Referring to the accompanying drawings Figure 5 It should be noted that the Z axis is vertically arranged and the X axis is horizontally arranged.

[0042] Referring to the accompanying drawings Figure 7 , the accompanying drawings Figure 8Further, the clamping device 300 comprises a connecting portion 310 and clamping portions 320 located on both sides of the connecting portion 310, the clamping portions 320 on both sides are matched with the outer side of the base portion 110, and the installation of the whole lock head 100 can be completed by sliding the base portion 110 relative to the clamping portions 320.

[0043] Further, the first locking assembly 321 arranged horizontally and the second locking assembly 322 arranged vertically are installed in the clamping portion 320, the first locking assembly 321 and the second locking assembly 322 are arranged in an extendable and retractable manner, and the position of the lock head 100 can be adjusted by adjusting the extension length of the first locking assembly 321 on both sides.

[0044] The second locking assembly 322 herein comprises four matrix arranged telescopic ends, the deflection of the base portion 110 towards the first direction can be adjusted by adjusting the telescopic ends on the front and back sides, and the deflection of the base portion 110 towards the second direction can be controlled by adjusting the telescopic ends on the left and right sides.

[0045] Through the above structure design, during the detection of the lock head 100 in the detection shell 200, the deflection position of the lock head 100, especially the locking portion 120, can be adjusted in a small range, the actual installation position of the locking portion 120 after the installation of the base portion 110 deviates by a certain amount can be simulated, the installation position of the locking portion 120 can be simulated, and the shape detection under different installation conditions can be realized according to the shape detection results of the detection device 500 and the display device 600, and whether the locking portion 120 meets the installation requirements under the limit condition can be further judged.

[0046] It should be further pointed out that the second locking assembly 322 herein is located on the side close to the locking portion 120, after the lock head 100 and the clamping device 300 are turned over by 180°, the second locking assembly 322 is located at the bottom, the second locking assembly 322 is combined with the gravity of the lock head 100, and efficient adjustment can be realized; and through the design of the extendable and retractable first locking assembly 321 and the second locking assembly 322, the first locking assembly 321 and the second locking assembly 322 are controlled to be in the retracted state, the base portion 110 can be quickly slid into the predetermined position, and quick installation can be realized; and the first locking assembly 321 and the second locking assembly 322 are controlled to be extended, the surface of the base portion 110 can be abutted tightly, the stability of the whole structure of the lock head 100 during the turning over and detection process is ensured, the normal shape detection of the locking portion 120 is ensured, and the accuracy of the detection structure is further ensured.

[0047] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for optically inspecting the shape of a lock head, wherein the lock head (100) includes a base portion (110) and a locking portion (120), characterized in that, The shape of the locking part (120) is detected using a lock head shape optical inspection device, which includes a display device (600) and a detection device (500) arranged at relatively intervals. The surface of the display device (600) can form a predetermined detection pattern, and the process includes the following steps: S1. The control lock (100) is positioned at a predetermined position between the detection device (500) and the display device (600). The transverse surface of the locking part (120) of the lock (100) is adjusted to be opposite to the detection device (500) and the display device (600) to complete the first optical inspection of the shape. S2. Adjust the longitudinal surface of the locking part (120) of the lock head (100) to be opposite to the detection device (500) and the display device (600) to complete the second optical inspection of the shape; The aforementioned optical inspection of the appearance controls the formation of a predetermined size inspection pattern on the surface of the display device (600) based on the distance between the locking part (120) and the inspection device (500) and the distance between the locking part (120) and the display device (600). The outline of the inspection pattern on the surface of the display device (600) is observed by the inspection device (500). Based on the external dimensions of the lock head and the positions of the inspection device, the display device and the lock head, the inspection pattern on the surface of the display device is determined according to the projection relationship. The appearance of the locking part is judged by judging the occlusion of the inspection pattern. If the inspection device cannot detect the outline of the inspection pattern on the display device, it means that the size of the lock head is too large and does not meet the production requirements. If the outline of the detection pattern observed by the detection device is too large and exceeds the threshold, it means that the lock head size is too small and does not meet the production requirements.

2. The optical inspection method for the shape of a lock head according to claim 1, characterized in that, The detection device (500) includes a detection component (530), a sliding joint (510) for controlling the linear movement of the detection component (530), and a telescopic joint (520) for controlling the extension and retraction of the detection component (530). The detection component (530) is adjusted to the detection position according to the size of the locking part (120) of the lock head (100).

3. The optical inspection method for the shape of a lock head according to claim 1, characterized in that, The base portion (110) of the lock head (100) is positioned by a clamping device (300). The clamping device (300) includes a connecting portion (310) and clamping portions (320) located on both sides of the connecting portion (310). The two ends of the base portion (110) slide into the clamping portion (320) and lock and fix it.

4. The optical inspection method for the shape of a lock head according to claim 3, characterized in that, The inner wall of the clamping part (320) is equipped with a retractable first locking component (321). By controlling the extension length of the two first locking components (321), the lateral offset distance of the lock head (100) is adjusted. The outline of the detection pattern on the surface of the display device (600) is observed again by the detection device (500). The outline of the detection pattern observed by the detection device (500) is compared with the standard data to determine whether the shape of the locking part (120) of the lock head (100) after lateral offset is qualified.

5. The optical inspection method for the shape of a lock head according to claim 3, characterized in that, The inner wall of the clamping part (320) is equipped with a second locking assembly (322), which includes four telescopic ends arranged in a matrix. After the four telescopic ends extend out, they abut against the surface of the base part (110).

6. The optical inspection method for the shape of a lock head according to claim 5, characterized in that, By adjusting the telescopic ends on the front and rear sides, the base part (110) can be adjusted to deflect in the first direction. The outline of the detection pattern on the surface of the display device (600) is observed again by the detection device (500). The outline of the detection pattern observed by the detection device (500) is compared with the standard data to determine whether the shape of the locking part (120) of the lock head (100) after deflecting in the first direction is qualified.

7. The optical inspection method for the shape of a lock head according to claim 5, characterized in that, By adjusting the telescopic ends on the left and right sides, the base part (110) can be controlled to deflect in the second direction. The outline of the detection pattern on the surface of the display device (600) is observed again by the detection device (500). The outline of the detection pattern observed by the detection device (500) is compared with the standard data to determine whether the shape of the locking part (120) of the lock head (100) after deflecting in the second direction is qualified.

8. The optical inspection method for the shape of a lock head according to any one of claims 3-7, characterized in that, The clamping device (300) is symmetrically arranged in two sets, and also includes a detection housing (200). The detection housing (200) is also provided with a flipping device (400). The flipping device (400) includes two electric sliders (410). An electric flipping shaft (420) is rotatably connected between the two electric sliders (410). A deflection shaft (430) is rotatably connected in the middle of the electric flipping shaft (420). The two clamping devices (300) are respectively installed on both sides of the deflection shaft (430).

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