Accuracy detection device

Abstract

The utility model discloses an embodiment of precision detection device, set up in the profiling groove of bearing part with lens module, and utilize the drive end of first measured motor to move bearing part. Motor controller is used for controlling the drive end of first measured motor. When bearing part moves from first position to second position, utilize first detection part to detect the lens module of second position, can detect the actual position coordinate of lens module. Thus, utilize the actual position coordinate of lens module and the position coordinate of second position of motor controller output compare, and then obtain the moving offset. Through the size of this moving offset, can know the moving precision of first measured motor in the moving process. Help operating personnel to change or repair in time to first measured motor, to improve the production quality of product.

Description

Technical Field

[0001] This utility model relates to the field of automation technology, and in particular to a precision detection device. Background Technology

[0002] During the assembly process of lens modules, the operational accuracy of the assembly equipment has a significant impact on the assembly of the lens modules. Over prolonged use, the operational accuracy of the assembly equipment may decrease. If these accuracy issues are not detected in time, the products may fail to meet process requirements. Therefore, how to monitor the operational accuracy of the assembly equipment becomes a problem that needs to be solved. Utility Model Content

[0003] In view of this, this utility model embodiment provides a precision detection device, which uses a motor controller to control a first motor under test to move from a first position to a second position, so that the position of the lens module at the second position can be detected by a first detection unit. This helps to monitor the operating precision of the first motor under test, allowing operators to replace or repair it in a timely manner.

[0004] The accuracy detection device of this utility model embodiment includes: The pose detection component includes a first detection unit; The motor controller is communicatively connected to the first motor under test; and The carrier has a contoured groove for setting the lens module. The drive end of the first tested motor can operably drive the carrier to move, and the carrier has a first position and a second position in the moving direction. The motor controller controls the drive end of the first tested motor to move from the first position to the second position, and the first detection unit detects the position of the lens module in the contour groove located at the second position.

[0005] Furthermore, the first position and the second position are at the same height; The first detection unit is a vision sensor, located above and facing the contour groove, and is used to detect the position of the lens of the lens module in the horizontal direction.

[0006] Furthermore, a bottom window is provided at the bottom of the contour groove, and the bottom window penetrates through the supporting part; The pose detection component further includes a second detection unit, which is a visual sensor; In the second position, the second detection unit is located below the contour groove and facing the bottom window, and the second detection unit is used to detect the position of the lens mount of the lens module in the horizontal direction.

[0007] Furthermore, the pose detection component also includes: The third detection unit is used to detect the rotation angle of the lens mount of the lens module along the first axis and the rotation angle along the second axis, wherein the first axis and the second axis are in a horizontal state and perpendicular to each other.

[0008] Furthermore, the supporting part also has a third rotation direction along the first axis and a fourth rotation direction along the second axis in the moving direction; The motor controller controls the drive end of the first motor under test to rotate by a predetermined angle along the third rotation direction and / or the fourth rotation direction, and the third detection unit detects the rotation angle of the lens mount in the contour groove.

[0009] Furthermore, the third detection unit is an autocollimator.

[0010] Furthermore, the pose detection component also includes: The fourth detection unit is used to detect the distance change of the lens mount of the lens module along the third axis, wherein the third axis is perpendicular to the horizontal direction.

[0011] Furthermore, the supporting part also has a fifth position and a sixth position in the moving direction, and the fifth position and the sixth position are located above the fourth detection part; The motor controller controls the drive end of the first motor under test to move from the fifth position to the sixth position, and the fourth detection unit detects the distance between the sixth position and the fifth position.

[0012] Furthermore, the fourth detection unit is a laser rangefinder sensor.

[0013] Furthermore, the accuracy detection device also includes a pickup head; The motor controller is communicatively connected to the second motor under test; The drive end of the second tested motor drives the pickup head to pick up the lens and place it on the lens mount.

[0014] The precision testing device of this utility model sets the lens module in the contour groove of the support unit, and moves the support unit using the drive end of the first tested motor. A motor controller controls the drive end of the first tested motor. When the support unit moves from a first position to a second position, the first detection unit detects the lens module at the second position, enabling the detection of the actual position coordinates of the lens module. By comparing the actual position coordinates of the lens module with the position coordinates of the second position output by the motor controller, the movement offset is obtained. The magnitude of this movement offset indicates the movement precision of the first tested motor during the movement process. This helps operators to replace or repair the first tested motor in a timely manner, thereby improving product manufacturing quality. Attached Figure Description

[0015] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the structure of the precision detection device according to an embodiment of the present invention; Figure 2 This is a circuit diagram of the precision detection device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the support portion according to an embodiment of the present utility model; Figure 4 This is an exploded view of the pose detection component according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the working state of the accuracy detection device in some embodiments of the present invention; Figure 6 This is a schematic diagram of the working state of the accuracy detection device according to an embodiment of the present invention in some other embodiments; Figure 7 This is a schematic diagram of the working state of the accuracy detection device in some other embodiments of the present invention.

[0016] Explanation of reference numerals in the attached figures: 1- Pose detection component; 11-First Inspection Department; 12-Second Inspection Department; 13-Third Inspection Department; 14-Fourth Inspection Department; 2-Motor controller; 3-Bearing component; 31-Contouring groove; 32-Bottom window; 41 - First position; 42 - Second position; 43 - Third rotation direction; 44 - Fourth rotation direction; 45 - Fifth position; 46 - Sixth position; 5-Pick-up head; 61 - First axis; 62 - Second axis; 63 - Third axis; 7-processor; A - First motor under test; B - Second motor under test; C-lens module; C1 - Lens; C2 - Lens mount. Detailed Implementation

[0017] The present invention will now be described based on embodiments, but it is not limited to these embodiments. In the following detailed description of the present invention, certain specific details are described in detail. Those skilled in the art will fully understand the present invention even without these details. To avoid obscuring the essence of the present invention, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0018] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0019] Unless the context explicitly requires it, words such as "including" or "contains" throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0020] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Figure 1 This is a schematic diagram of the accuracy detection device in this embodiment. Figure 2 This is a circuit diagram of the accuracy detection device in this embodiment.

[0023] In some implementations, such as Figure 1 and Figure 2As shown, the accuracy detection device in this embodiment includes a pose detection component 1, a motor controller 2, a support unit 3, a pickup head 5, and a processor 7. The support unit 3 is disposed on the first motor under test A, and the pickup head 5 is disposed on the second motor under test B. The pose detection component 1 includes a first detection unit 11, a second detection unit 12, a third detection unit 13, and a fourth detection unit 14. Further referring to… Figure 2 As shown, the processor 7 is communicatively connected to the motor controller 2 and the pose detection assembly 1 (first detection unit 11, second detection unit 12, third detection unit 13, and fourth detection unit 14). The processor 7 controls the movement of the first tested motor A and the second tested motor B through the motor controller 2.

[0024] Figure 3 This is a schematic diagram of the structure of the support part 3 in this embodiment. Figure 4 This is an exploded view of the pose detection component 1 in this embodiment. Figure 5 This is a schematic diagram of the working state of the accuracy detection device in some implementations of this embodiment.

[0025] Further reference Figures 3-5 As shown, the support portion 3 has a contoured groove 31 for mounting the lens module C. This contoured groove 31 faces upwards; that is, it is a groove formed by recessing downwards from the surface of the support portion 3. The drive end of the first tested motor A operably drives the support portion 3 to move, and the support portion 3 has a first position 41 and a second position 42 in the direction of movement (e.g., ...). Figure 5 (As shown). When the motor controller 2 is configured to control the drive end of the first tested motor A to move from the first position 41 to the second position 42, the first detection unit 11 is used to detect the position of the lens module C in the contour groove 31 located at the second position 42.

[0026] In one optional implementation, the processor 7 sends a drive signal to the motor controller 2. For example, in the XYZ three-dimensional coordinate system, the coordinates of the first position 41 are (0, 0, 0), the coordinates of the second position 42 are (0, 1, 0), and the step frequency of the first tested motor A is 0.1 mm. The first tested motor A drives the lens module C in the carrier 3 to move to the first position 41 first. Then, during the movement from the first position 41 to the second position 42, the first tested motor A moves 10 steps. In this configuration, the first detection unit 11 detects the coordinates of the lens module C at the second position 42, mainly detecting the value of the Y-axis coordinate. For example, the first detection unit 11 detects the coordinates of the lens module C at the second position 42 as (0, 0.9997, 0). Thus, the processor 7 compares the detection data from the first detection unit 11 with the drive parameters of the motor controller 2 for the first tested motor A, and obtains a difference of 0.0003 mm in the Y-axis. This difference represents the displacement of the first tested motor A along the Y-axis. Therefore, this displacement indicates the movement accuracy of the first tested motor A, or the first tested motor A and the transmission components it drives. Especially during prolonged use of processing equipment, operators can promptly replace the first tested motor A and the transmission components if the movement accuracy is substandard, thus avoiding any impact on production quality.

[0027] In summary, the accuracy detection device in this embodiment places the lens module C within the contour groove 31 of the support unit 3, and moves the support unit 3 using the drive end of the first tested motor A. The motor controller 2 controls the drive end of the first tested motor A. When the support unit 3 moves from the first position 41 to the second position 42, the first detection unit 11 detects the lens module C at the second position 42, detecting the actual position coordinates of the lens module C. Therefore, by comparing the actual position coordinates of the lens module C with the position coordinates of the second position 42 output by the motor controller 2, the movement offset is obtained. The magnitude of this movement offset indicates the movement accuracy of the first tested motor A during the movement process. This helps operators to replace or repair the first tested motor A in a timely manner, thereby improving product manufacturing quality.

[0028] In some implementations, such as Figure 5 As shown, the first position 41 and the second position 42 are at the same height. The first detection unit 11 is, for example, a vision sensor. The first detection unit 11 is located above and facing the contour groove 31. The first detection unit 11 is used to detect the horizontal position of the lens C1 of the lens module C. In this embodiment, the first detection unit 11 is located above the support unit 3, and can detect the position of the lens C1 of the lens module C, thereby further determining the installation accuracy of the lens C1 and the lens mount C2.

[0029] Furthermore, such as Figure 1 As shown, the accuracy detection device also includes a pickup head 5. The motor controller 2 is communicatively connected to the second motor under test B. The drive end of the second motor under test B drives the pickup head 5 to pick up the lens C1 and place it on the lens mount C2. In this embodiment, the second motor under test B is used to mount the lens C1 on the lens mount C2. During installation, the lens mount C2 is already set in the contour groove 31. Therefore, when the first detection unit 11 detects the position of the lens C1, it can indirectly detect whether the movement accuracy of the second motor under test B meets the requirements.

[0030] In some implementations, such as Figures 3-4 As shown, a bottom window 32 is provided at the bottom of the contour groove 31, and the bottom window 32 penetrates the supporting part 3. In some embodiments, such as Figure 3 As shown, the bottom window 32 has a two-stage slot, meaning that the bottom window 32 has a larger slot area on the upper side and a smaller slot area on the lower side. The pose detection assembly 1 also includes a second detection unit 12, which may be, for example, a vision sensor. At the second position 42, the second detection unit 12 is located below the contour slot 31 and facing the bottom window 32. The second detection unit 12 is used to detect the horizontal position of the lens mount C2 of the lens module C.

[0031] Optionally, the camera of the first detection unit 11 and the camera of the second detection unit 12 are on the same axis. The first detection unit 11 is used to detect the position coordinates of the lens C1, and the second detection unit 12 is used to detect the position coordinates of the lens mount C2. The processor 7 can compare the position coordinates of the lens C1 and the position coordinates of the lens mount C2. When the difference between the movement offset of the position coordinates of the lens C1 and the movement offset of the position coordinates of the lens mount C2 is greater than a predetermined value, it can be determined that the movement accuracy of the second tested motor B does not meet the requirements. This helps the operator to replace or repair the second tested motor B in a timely manner, thereby improving the production quality of the product.

[0032] Figure 6 This is a schematic diagram of the working state of the accuracy detection device in this embodiment in other embodiments.

[0033] In some implementations, such as Figure 4 and Figure 6 As shown, the pose detection component 1 also includes a third detection unit 13. The third detection unit 13 is used to detect the rotation angle of the lens mount C2 of the lens module C along the first axis 61 and the rotation angle along the second axis 62. The first axis 61 and the second axis 62 are horizontal and perpendicular to each other. In this embodiment, the third detection unit 13 can be used to detect the horizontal posture of the support part 3, preventing the contour groove 31 from tilting.

[0034] In some implementations, such as Figure 6 As shown, the support unit 3 also has a third rotation direction 43 (as shown in state I in the figure) along the first axis 61 and a fourth rotation direction 44 (as shown in state II in the figure) along the second axis 62 in the moving direction, wherein the first axis 61 is substantially orthogonal to the second axis 62. The motor controller 2 controls the drive end of the first tested motor A to rotate by a predetermined angle along the third rotation direction 43 and / or the fourth rotation direction 44, and the third detection unit 13 detects the rotation angle of the lens mount C2 in the contour groove 31.

[0035] In one optional implementation, when the first tested motor A drives the carrier 3 to rotate 10 degrees along the third rotation direction 43, the third detection unit 13 can detect the actual rotation angle in that direction (e.g., an actual rotation of 10.01 degrees). When the first tested motor A drives the carrier 3 to rotate 10 degrees along the fourth rotation direction 44, the third detection unit 13 can detect the actual rotation angle in that direction (e.g., an actual rotation of 10.02 degrees). Thus, by measuring the difference in rotation angles in each direction, the movement offset of the first tested motor A is detected. Therefore, the processor 7 can specifically determine the movement offset of the first tested motor A in different rotation directions (third rotation direction 43, fourth rotation direction 44), and then replace or repair the parts accordingly.

[0036] Furthermore, the third inspection unit 13 is an autocollimator, such as an optical autocollimator, laser autocollimator, or photoelectric autocollimator. This improves the inspection accuracy of the lens mount C2. Consequently, it helps operators to promptly replace or repair the first tested motor A, thereby improving product manufacturing quality.

[0037] Figure 7 This is a schematic diagram of the working state of the accuracy detection device in some other embodiments of this example.

[0038] In some implementations, such as Figure 7 As shown, the pose detection component 1 also includes a fourth detection unit 14. The fourth detection unit 14 is used to detect the distance change of the lens mount C2 of the lens module C along the third axis 63. The third axis 63 is perpendicular to the horizontal direction. That is, the third axis 63 is perpendicular to the first axis 61 and the second axis 62. Thus, the processor 7 can determine the amount of movement offset of the first measured motor A in the height direction.

[0039] In some implementations, such as Figure 7As shown, the support unit 3 also has a fifth position 45 and a sixth position 46 in the moving direction, and the fifth position 45 and the sixth position 46 are located above the fourth detection unit 14. The motor controller 2 controls the drive end of the first tested motor A to move from the fifth position 45 to the sixth position 46, and the fourth detection unit 14 detects the distance between the sixth position 46 and the fifth position 45.

[0040] In one optional implementation, the second detection unit 12, the third detection unit 13, and the fourth detection unit 14 are arranged sequentially. The processor 7 sends a drive signal to the motor controller 2, with the coordinates of the fifth position 45 being (0, 1, 0) and the coordinates of the sixth position 46 being (0, 1, 1). The step frequency of the first tested motor A is 0.1 mm. The first tested motor A drives the lens module C inside the carrier 3 to move to the fifth position 45 first. Then, during the process of moving from the fifth position 45 to the sixth position 46 (that is, raising the height of the carrier 3), the first tested motor A moves 10 steps. In this configuration, the fourth detection unit 14 detects the distance change of the lens mount C2. For example, the fourth detection unit 14 detects that the lens module C has moved 0.9996 mm on the Z-axis. Thus, the processor 7 compares the detection data of the fourth detection unit 14 with the drive parameters of the motor controller 2 for the first tested motor A, and obtains a difference of 0.0004 mm on the Z-axis. This difference represents the displacement of the first tested motor A along the Z-axis. Therefore, this displacement allows us to determine the movement accuracy of the first tested motor A, or the first tested motor A and its corresponding transmission components. Especially during prolonged use of the processing equipment, operators can promptly replace the first tested motor A and the transmission components if the movement accuracy is substandard, thus avoiding any impact on production quality.

[0041] Furthermore, the fourth detection unit 14 is a laser rangefinder. The emitting head of the laser rangefinder faces the lens mount C2 through the bottom window 32. Thus, in this embodiment, the use of a laser rangefinder increases the detection accuracy of the pose detection component 1 for the movement offset.

[0042] As described above, because the processor 7 can monitor the accuracy of the first detection unit 11, the second detection unit 12, the third detection unit 13, and the fourth detection unit 14 in real time, it can avoid the problem of reduced assembly accuracy due to prolonged lack of calibration after the equipment leaves the factory, thus ensuring production quality. On the other hand, by monitoring the accuracy of the first detection unit 11, the second detection unit 12, the third detection unit 13, and the fourth detection unit 14 in real time online, there is no need to stop the equipment for calibration, thus effectively improving work efficiency.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principle of this utility model should be included within the protection scope of this utility model.

Claims

1. A precision detection device, characterized in that, The accuracy detection device includes: The pose detection component (1) includes a first detection unit (11); The motor controller (2) is communicatively connected to the first motor under test (A); and The support part (3) has a contoured groove (31) for setting the lens module (C), the drive end of the first tested motor (A) can operably drive the support part (3) to move, and the support part (3) has a first position (41) and a second position (42) in the moving direction. The motor controller (2) controls the drive end of the first motor under test (A) to move from the first position (41) to the second position (42), and the first detection unit (11) detects the position of the lens module (C) in the contour groove (31) located in the second position (42).

2. The precision detection device according to claim 1, characterized in that, The first position (41) and the second position (42) are at the same height; The first detection unit (11) is a vision sensor. The first detection unit (11) is located above and facing the contour groove (31). The first detection unit (11) is used to detect the position of the lens (C1) of the lens module (C) in the horizontal direction.

3. The precision detection device according to claim 2, characterized in that, The bottom of the contour groove (31) is provided with a bottom window (32), which penetrates the supporting part (3); The pose detection component (1) further includes a second detection unit (12), which is a visual sensor; In the second position (42), the second detection unit (12) is located below the contour groove (31) and toward the bottom window (32), and the second detection unit (12) is used to detect the position of the lens mount (C2) of the lens module (C) in the horizontal direction.

4. The accuracy detection device according to claim 3, characterized in that, The pose detection component (1) further includes: The third detection unit (13) is used to detect the rotation angle of the lens mount (C2) of the lens module (C) along the first axis (61) and the rotation angle along the second axis (62), wherein the first axis (61) and the second axis (62) are in a horizontal state and perpendicular to each other.

5. The precision detection device according to claim 4, characterized in that, The bearing part (3) also has a third rotation direction (43) that rotates along the first axis (61) and a fourth rotation direction (44) that rotates along the second axis (62) in the moving direction; The motor controller (2) controls the drive end of the first motor under test (A) to rotate by a predetermined angle along the third rotation direction (43) and / or the fourth rotation direction (44), and the third detection unit (13) detects the rotation angle of the lens mount (C2) in the contour groove (31).

6. The precision detection device according to claim 5, characterized in that, The third detection unit (13) is an autocollimator.

7. The accuracy detection device according to any one of claims 1-6, characterized in that, The pose detection component (1) further includes: The fourth detection unit (14) is used to detect the distance change of the lens mount (C2) of the lens module (C) along the third axis (63), wherein the third axis (63) is perpendicular to the horizontal direction.

8. The precision detection device according to claim 7, characterized in that, The bearing part (3) also has a fifth position (45) and a sixth position (46) in the moving direction, and the fifth position (45) and the sixth position (46) are located above the fourth detection part (14); The motor controller (2) controls the drive end of the first tested motor (A) to move from the fifth position (45) to the sixth position (46), and the fourth detection unit (14) detects the distance between the sixth position (46) and the fifth position (45).

9. The precision detection device according to claim 8, characterized in that, The fourth detection unit (14) is a laser rangefinder sensor.

10. The accuracy detection device according to any one of claims 1-6, characterized in that, The accuracy detection device also includes a pickup head (5); The motor controller (2) is communicatively connected to the second motor under test (B); The drive end of the second tested motor (B) drives the pickup head (5) to pick up the lens (C1) and place it on the lens mount (C2).

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