Calibration device for optical three-dimensional scanning apparatus and method of use thereof

Abstract

The application discloses a calibration device suitable for an optical three-dimensional scanning equipment and a use method thereof, relates to the technical field of calibration of optical three-dimensional scanning equipment, and provides the following scheme, which comprises a base, a telescopic mechanism is installed on the top of the base, a driving mechanism is installed on the telescopic mechanism, a moving mechanism is installed on the driving mechanism, the moving mechanism comprises a reciprocating screw one, a one-way gear is fixed on the reciprocating screw one, a moving block one is threadedly sleeved on the reciprocating screw one, a reciprocating screw two is rotationally connected in the moving block one, a connecting rod is fixed to one end of the reciprocating screw two, and a bevel gear one is fixed to the outside of the connecting rod; the application can adjust the height, is convenient to carry, automatically calibrates and demarcates, does not need manual holding, avoids calibration and demarcation errors caused by shaking, improves calibration speed, reduces calibration difficulty, only one power source is needed to complete double-coordinate adjustment, and power cost is more saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical three-dimensional scanning device calibration, in particular to a calibration device suitable for optical three-dimensional scanning device and a method of using the same. BACKGROUND

[0002] Optical three-dimensional scanning technology is a technology that uses optical measurement technology and optical information processing technology to non-contact obtain the three-dimensional appearance and appearance data (such as color, reflectivity, etc.) of a real object. It has been widely used in many fields such as industrial automation, reverse engineering, object recognition, cultural heritage protection, quality control, medicine and virtual reality. Optical three-dimensional scanning device generally has model building and measurement functions, and is a new type of measuring instrument. Therefore, it is necessary to correctly and effectively calibrate the measurement accuracy of the device, which can ensure the reliable performance of the device. The scanner calibration needs to use a calibration plate. According to the computer prompt, the lens of the scanner is aligned with the calibration plate, and then the scanner is controlled to move to the specified position of the calibration plate for calibration according to the computer instruction. The calibration position is generally at the four corners and the center point of the calibration plate.

[0003] However, the handheld scanner needs to be manually held and operated for calibration. Therefore, the scanner will shake during calibration, resulting in a certain error in calibration. In addition, manual calibration is slow and needs to be held horizontally and moved all the time, so calibration is difficult. SUMMARY

[0004] The calibration device suitable for optical three-dimensional scanning device and the method of using the same are provided to solve the above problems in the prior art.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] The calibration device suitable for optical three-dimensional scanning device comprises a base, a telescopic mechanism installed on the top of the base, a driving mechanism installed on the telescopic mechanism, a moving mechanism installed on the driving mechanism, the moving mechanism comprising a reciprocating screw one, a one-way gear fixed on the reciprocating screw one, a moving block one threadedly sleeved on the reciprocating screw one, a reciprocating screw two rotatably connected in the moving block one, a connecting rod fixed on one end of the reciprocating screw two, a bevel gear one fixed on the outside of the connecting rod, a limiting mechanism installed on the moving mechanism, and the driving mechanism drives the moving mechanism to translate, and at the same time drives the limiting mechanism to move.

[0007] Further, the telescopic mechanism comprises an outer frame fixedly connected with the top of the base, a fastening bolt one threadedly sleeved on the right side of the outer frame, and an inner plate sleeved in the outer frame. The telescopic mechanism can adjust the height of the device and facilitate carrying.

[0008] Further, the driving mechanism comprises a motor fixedly connected with the inner plate, an output end of the motor is fixed with a rotating shaft, the rotating shaft is externally fixed with two gears and bevel gears, one side of the gear is engaged with a one-way gear, one side of the bevel gear one is engaged with the bevel gear two, and the driving mechanism is driven to rotate in different directions to drive different reciprocating screws to work, so that only one power source is needed, and power cost is saved.

[0009] Further, the moving mechanism further comprises a guide rod one fixedly connected with one side of the inner plate, the guide rod one is sleeved in the inner part of the moving block one, the left end of the reciprocating screw one is rotationally connected with the inner plate, one side of the moving block one is fixed with a guide rod two, the outer part of the reciprocating screw two is threadedly sleeved with a moving block two, the guide rod two is sleeved in the inner part of the moving block two, and the moving mechanism drives the scanner to move in two coordinates to meet the multiple positions of the calibration plate.

[0010] Further, the limiting mechanism comprises a connecting plate fixedly connected with one side of the moving block two, one side of the connecting plate is fixed with a fixed block, the top and bottom of the fixed block are fixed with limiting blocks, one side of the fixed block is provided with a groove, the top and bottom of the groove are sleeved with trapezoidal limiting blocks, the inner wall of the groove is fixed with a bolt plate, the inner part of the bolt plate is threadedly sleeved with a fastening bolt two, one end of the fastening bolt two is rotationally connected with a top block, one side of the trapezoidal limiting block is fixed with a spring plate, one side of the spring plate is fixed with a spring, one end of the spring is fixedly connected with the inner wall of the groove, and the limiting mechanism limits the scanner to avoid the situation that the scanner slides during movement.

[0011] Further, the top of the base is fixed with a calibration plate limiting frame, the calibration plate limiting frame limits the calibration plate to avoid the situation that the calibration plate moves and fails to calibrate.

[0012] Further, the outer part of the fixed block is sleeved with the scanner.

[0013] The application relates to a method for using the optical three-dimensional scanning device calibration device.

[0014] S1, first, the inner plate is pulled upwards, and the fastening bolt one is tightened to fix the inner plate.

[0015] S2, the scanner is sleeved in the outer part of the fixed block, then the fastening bolt two is rotated, the fastening bolt two pushes the top block to extrude the two trapezoidal limiting blocks, the trapezoidal limiting blocks are stretched out of the groove, and the scanner sleeved in the outer part of the fixed block is limited.

[0016] S3, start the scanner, start the motor reverse drive gear and bevel gear two rotation, gear drive unidirectional gear and reciprocating screw one, reciprocating screw one drive moving block one to the bevel gear two direction movement, bevel gear one gradually close to bevel gear two, and mesh with bevel gear two, motor rotation drive bevel gear two rotation, gear and unidirectional gear do not drive reciprocating screw one rotation, bevel gear two drive bevel gear one and reciprocating screw two rotation, reciprocating screw two rotation makes moving block two moves drive limit mechanism and scanner transverse movement, adjust the first coordinate, motor reverse again drive reciprocating screw one rotation makes moving block one drive scanner back, determine the second coordinate, if need to adjust the first coordinate again, adjust according to the above steps can, so that the scanner can be moved to the specified position, so that the scanner scans to the specified position on the calibration plate.

[0017] S4, after use, rotate fastening bolt two to remove the scanner, rotate fastening bolt one to retract the inner plate, reduce its height, facilitate carrying.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] 1, the present application by installing telescopic mechanism and drive mechanism, wherein the telescopic mechanism can adjust the height of the device, facilitate carrying, drive mechanism forward and reverse drive different reciprocating screw work, only one power source, save power cost.

[0020] 2, the present application by installing moving mechanism and limit mechanism, wherein the moving mechanism drive scanner double coordinate movement, meet the calibration of the calibration plate multiple position, limit mechanism to the scanner, avoid the situation of sliding during the movement of the scanner.

[0021] In summary, the device design novel, simple operation, the device can adjust the height, convenient to carry, automatic calibration, without manual, avoid the calibration error caused by shaking, improve the calibration speed, reduce the calibration difficulty, only one power source complete double coordinate adjustment, more saving power cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The right front view schematic diagram of the calibration device suitable for the optical three-dimensional scanning equipment is provided for the present application;

[0023] Figure 2 The right rear view schematic diagram of the calibration device suitable for the optical three-dimensional scanning equipment is provided for the present application;

[0024] Figure 3 The front view schematic diagram of the calibration device suitable for the optical three-dimensional scanning equipment is provided for the present application;

[0025] Figure 4A side view structure diagram of the calibration device suitable for the optical three-dimensional scanning equipment according to the present application is shown in the figure.

[0026] Figure 5 A right view structure diagram of the calibration device suitable for the optical three-dimensional scanning equipment according to the present application is shown in the figure.

[0027] In the figure: 1, base; 2, telescopic mechanism; 21, outer frame; 22, fastening bolt one; 23, inner plate; 3, moving mechanism; 31, reciprocating screw one; 32, one-way gear; 33, guide rod one; 34, moving block one; 35, reciprocating screw two; 36, bevel gear one; 37, guide rod two; 38, moving block two; 4, limiting mechanism; 41, connecting plate; 42, fixed block; 43, limiting block; 44, trapezoidal limiting block; 45, top block; 46, spring; 47, spring plate; 48, bolt plate; 49, fastening bolt two; 5, scanner; 6, calibration plate limiting frame; 7, driving mechanism; 71, motor; 72, gear; 73, bevel gear two. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] Embodiment 1

[0031] Reference Figures 1-3 The calibration device suitable for the optical three-dimensional scanning equipment comprises a base 1, a telescopic mechanism 2 is installed on the top of the base 1, a driving mechanism 7 is installed on the telescopic mechanism 2, a moving mechanism 3 is installed on the driving mechanism 7, the moving mechanism 3 comprises a reciprocating screw one 31, a one-way gear 32 is fixed on the reciprocating screw one 31, a moving block one 34 is threadedly sleeved on the reciprocating screw one 31, a reciprocating screw two 35 is rotatably connected in the interior of the moving block one 34, a connecting rod is fixed on one end of the reciprocating screw two 35, a bevel gear one 36 is fixed on the exterior of the connecting rod, a limiting mechanism 4 is installed on the moving mechanism 3, and the driving mechanism 7 drives the moving mechanism 3 to translate, and simultaneously drives the limiting mechanism 4 to move.

[0032] In the application, the telescopic mechanism 2 comprises an outer frame 21 fixedly connected to the top of the base 1, a fastening bolt 22 is threadedly sleeved on the right side of the outer frame 21, and an inner plate 23 is sleeved in the inner part of the outer frame 21, so that the telescopic mechanism 2 can adjust the height of the device and facilitate carrying.

[0033] In the application, the driving mechanism 7 comprises a motor 71 fixedly connected to the inner plate 23, a rotating shaft is fixed to the output end of the motor 71, a gear 72 and a bevel gear 73 are fixed to the outer part of the rotating shaft, one side of the gear 72 is engaged with the one-way gear 32, one side of the bevel gear 73 is engaged with the bevel gear 36, and the driving mechanism 7 drives different reciprocating screw rods to work in positive rotation and reverse rotation, so that only one power source is needed, and power cost is saved.

[0034] In the application, the moving mechanism 3 further comprises a guide rod 33 fixedly connected to one side of the inner plate 23, the guide rod 33 is sleeved in the inner part of a moving block 34, a reciprocating screw rod 31 is rotatably connected to the left end of the inner plate 23, the moving block 34 is fixedly provided with a guide rod 37 on one side, a reciprocating screw rod 35 is threadedly sleeved on the outer part of a moving block 38, the guide rod 37 is sleeved in the inner part of the moving block 38, and the moving mechanism 3 drives the scanner 5 to move in two coordinates, so that multiple positions of the calibration plate can be calibrated.

[0035] Embodiment 2

[0036] Reference Figures 2-5 : The embodiment provides a technical scheme based on the embodiment one, the limiting mechanism 4 comprises a connecting plate 41 fixedly connected to one side of the moving block 38, the connecting plate 41 is fixedly provided with a fixed block 42 on one side, the top and the bottom of the fixed block 42 are fixedly provided with limiting blocks 43, a recess is formed in one side of the fixed block 42, the top and the bottom of the recess are sleeved with trapezoidal limiting blocks 44, a bolt plate 48 is fixed to the inner wall of the recess, a fastening bolt 49 is threadedly sleeved in the inner part of the bolt plate 48, a top block 45 is rotatably connected to one end of the fastening bolt 49, the trapezoidal limiting blocks 44 are fixedly provided with spring plates 47 on one side, the spring plates 47 are fixedly provided with springs 46 on one side, one end of the spring 46 is fixedly connected to the inner wall of the recess, and the limiting mechanism 4 limits the scanner 5, so that the scanner 5 is prevented from sliding during movement.

[0037] In the application, the top of the base 1 is fixedly provided with a calibration plate limiting frame 6, the calibration plate limiting frame 6 limits the calibration plate, and the calibration plate is prevented from moving and failing to calibrate.

[0038] In the application, the outer part of the fixed block 42 is sleeved with the scanner 5.

[0039] The application discloses a method for calibrating an optical three-dimensional scanning device.

[0040] S1, first pull the inner plate 23 up, tighten the fastening bolt 22 to fix the inner plate 23.

[0041] S2, the scanner 5 is sleeved into the outside of the fixed block 42, then the fastening bolt two 49 is rotated, the fastening bolt two 49 pushes the top block 45 to extrude the two trapezoidal limiting blocks 44, the trapezoidal limiting blocks 44 extend out of the groove, and the scanner 5 sleeved into the outside of the fixed block 42 is limited.

[0042] S3, the scanner 5 is started, the motor 71 is reversed to drive the gear 72 and the bevel gear two 73 to rotate, the gear 72 drives the one-way gear 32 and the reciprocating screw one 31, the reciprocating screw one 31 drives the moving block one 34 to move towards the bevel gear two 73, the bevel gear one 36 gradually approaches the bevel gear two 73 and is engaged with the bevel gear two 73, the motor 71 is rotated to drive the bevel gear two 73 to rotate, the gear 72 and the one-way gear 32 do not drive the reciprocating screw one 31 to rotate, the bevel gear two 73 drives the bevel gear one 36 and the reciprocating screw two 35 to rotate, the reciprocating screw two 35 rotates to move the moving block two 38 to drive the limiting mechanism 4 and the scanner 5 to move laterally, the first coordinate is adjusted, the motor 71 is reversed to drive the reciprocating screw one 31 to rotate again, so that the moving block one 34 drives the scanner 5 to move backward, the second coordinate is determined, if the first coordinate needs to be adjusted again, the above steps can be adjusted, so that the scanner 5 can be moved to the specified position, and the scanner 5 scans the specified position on the calibration plate.

[0043] S4, after use, the fastening bolt two 49 is rotated to remove the scanner 5, and the fastening bolt one 22 is rotated to retract the inner plate 23, so that the height thereof is reduced, and the scanner 5 is convenient to carry.

[0044] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. Calibration device suitable for optical three-dimensional scanning apparatuses, comprising a base (1), characterized in that, The top of the base (1) is provided with a telescopic mechanism (2), the telescopic mechanism (2) is provided with a driving mechanism (7), the driving mechanism (7) is provided with a moving mechanism (3), the moving mechanism (3) comprises a reciprocating screw (31), the reciprocating screw (31) is fixedly provided with a one-way gear (32), the reciprocating screw (31) is threadedly sleeved with a moving block (34), the moving block (34) is internally rotatably connected with a reciprocating screw (35), one end of the reciprocating screw (35) is fixedly provided with a connecting rod, the outer portion of the connecting rod is fixedly provided with a bevel gear (36), the moving mechanism (3) is provided with a limiting mechanism (4), the driving mechanism (7) drives the moving mechanism (3) to translate, and simultaneously the driving mechanism (7) drives the limiting mechanism (4) to move; The driving mechanism (7) comprises a motor (71) fixedly connected with the inner plate (23), the output end of the motor (71) is fixedly provided with a rotating shaft, the outer portion of the rotating shaft is fixedly provided with a gear (72) and a bevel gear (73), one side of the gear (72) is engaged with the one-way gear (32), and one side of the bevel gear (36) is engaged with the bevel gear (73); The limiting mechanism (4) comprises a connecting plate (41) fixedly connected with one side of a moving block (38), one side of the connecting plate (41) is fixedly provided with a fixed block (42), the top and bottom of the fixed block (42) are fixedly provided with a limiting block (43), one side of the fixed block (42) is provided with a groove, the top and bottom of the groove are sleeved with a trapezoidal limiting block (44), the inner wall of the groove is fixedly provided with a bolt plate (48), the inner portion of the bolt plate (48) is threadedly sleeved with a fastening bolt (49), one end of the fastening bolt (49) is rotatably connected with a top block (45), one side of the trapezoidal limiting block (44) is fixedly provided with a spring plate (47), one side of the spring plate (47) is fixedly provided with a spring (46), and one end of the spring (46) is fixedly connected with the inner wall of the groove.

2. The calibration device suitable for use in an optical three-dimensional scanning apparatus according to claim 1, characterized in that, The telescopic mechanism (2) comprises an outer frame (21) fixedly connected with the top of the base (1), and the right side of the outer frame (21) is threadedly sleeved with a fastening bolt (22).

3. The calibration device suitable for use in an optical three-dimensional scanning apparatus according to claim 1, characterized in that, The moving mechanism (3) further comprises a guide rod (33) fixedly connected with one side of the inner plate (23), the guide rod (33) is sleeved in the inner portion of the moving block (34), the left end of the reciprocating screw (31) is rotatably connected with the inner plate (23), one side of the moving block (34) is fixedly provided with a guide rod (37), and the outer portion of the reciprocating screw (35) is threadedly sleeved with a moving block (38).

4. The calibration device suitable for use in an optical three-dimensional scanning apparatus according to claim 1, characterized in that, The top of the base (1) is fixedly provided with a calibration plate limiting frame (6).

5. The calibration device suitable for use in an optical three-dimensional scanning apparatus according to claim 1, characterized in that, The outer portion of the fixed block (42) is sleeved with a scanner (5).

6. A method of using a device for calibrating an optical three-dimensional scanning apparatus according to any one of claims 1-5, characterized in that, The method comprises the following steps: S1, first, the inner plate (23) is pulled up, and the fastening bolt (22) is tightened to fix the inner plate (23); S2, the scanner (5) is sleeved outside the fixed block (42), and then the second fastening bolt (49) is rotated. The second fastening bolt (49) pushes the top block (45) to extrude the two trapezoidal limiting blocks (44), the trapezoidal limiting blocks (44) extend out of the groove, and the scanner (5) sleeved outside the fixed block (42) is limited; S3, start the scanner (5), reverse the motor (71) to drive the gear (72) and the bevel gear (73) to rotate, the gear (72) drives the one-way gear (32) and the reciprocating screw (31), the reciprocating screw (31) drives the moving block (34) to move towards the bevel gear (73), the bevel gear (36) gradually approaches the bevel gear (73) and is engaged with the bevel gear (73), the motor (71) rotates in the positive direction to drive the bevel gear (73) to rotate, the gear (72) and the one-way gear (32) do not drive the reciprocating screw (31) to rotate, the bevel gear (73) drives the bevel gear (36) and the reciprocating screw (35) to rotate, the reciprocating screw (35) rotates to move the moving block (38) to drive the limiting mechanism (4) and the scanner (5) to move transversely, adjust the first coordinate, reverse the motor (71) to drive the reciprocating screw (31) to rotate again, so that the moving block (34) drives the scanner (5) to move backward, and the second coordinate is determined. If it is necessary to adjust the first coordinate again, the above steps can be adjusted. In this way, the scanner (5) can be moved to the specified position, and the scanner (5) can scan the specified position on the calibration plate; S4, after use, rotate the second fastening bolt (49) to remove the scanner (5), and rotate the first fastening bolt (22) to retract the inner plate (23) and reduce its height.

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