Intraoral scanner calibration device

Abstract

The embodiment of the invention provides an intraoral scanner calibration device, which relates to the technical field of calibration and comprises a shell, a driving mechanism, a calibration mechanism, a first detection module and a second detection module, the housing is provided with an assembling hole used for positioning a device to be calibrated. The driving mechanism is installed on the machine shell, connected to the calibration mechanism and used for driving the calibration mechanism to rotate around the preset axis and get close to or away from the assembly hole in the extending direction of the preset axis. The first detection module and the second detection module are both installed on the machine shell and arranged on the preset axis at intervals. The first detection module and the second detection module are both used for obtaining the position of the calibration mechanism. The calibration device can realize automatic calibration, is time-saving and labor-saving, is convenient to control the moving distance, is flexible to operate and control, and is high in accuracy of a calibration result.

Description

Technical Field

[0001] The present invention relates to the field of calibration technology, and in particular to an intraoral scanner calibration device. Background Art

[0002] Intraoral scanners capture multiple optical images of the target object by scanning, and use the acquired data to create 3D model data for the target object. Intraoral scanners may cause accuracy and color errors when acquiring image data during the manufacturing or use process. Therefore, in order for the intraoral scanner to obtain accurate 3D model data, it is generally necessary to regularly check and calibrate the intraoral scanner.

[0003] The inventors found in their research that the prior art intraoral scanner calibration device has at least the following disadvantages:

[0004] Currently, intraoral scanners are mostly calibrated using manually adjusted calibration devices. Each time the calibration device is moved for data collection, multiple movements are required to collect complete data, which is inefficient and has poor usability. Manual adjustment may also cause calibration deviations and difficulty in accurate calibration. At the same time, the position of the manual adjustment movement cannot be determined, which can easily cause the movement distance to be too large, reducing the calibration accuracy. Summary of the invention

[0005] The objects of the present invention include, for example, providing an intraoral scanner calibration device that can realize automatic calibration, save time and labor, facilitate control of moving distance, flexible operation, and high accuracy of calibration results.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides an intraoral scanner calibration device, comprising:

[0008] A housing, a driving mechanism, a calibration mechanism, a first detection module and a second detection module; the housing is provided with an assembly hole for positioning the device to be calibrated; the driving mechanism is installed on the housing, and the driving mechanism is connected to the calibration mechanism, and is used to drive the calibration mechanism to rotate around a preset axis and approach or move away from the assembly hole along the extension direction of the preset axis; the first detection module and the second detection module are both installed on the housing and arranged at intervals on the preset axis, and the first detection module and the second detection module are both used to obtain the position of the calibration mechanism.

[0009] In an optional embodiment, the driving mechanism includes a motor, a transmission sleeve, a transmission shaft and a threaded sleeve, the motor is mounted on the housing, the transmission sleeve is connected to the output shaft of the motor; the transmission shaft is connected to the transmission sleeve, the transmission shaft and the transmission sleeve are slidably matched in the extension direction of the preset axis, and the two are relatively fixed in the circumferential direction of the preset axis; the threaded sleeve is mounted on the housing, and the transmission shaft is threaded in the threaded sleeve; the transmission shaft is connected to the calibration mechanism.

[0010] Based on the above scheme, after the motor is started, it drives the transmission sleeve to rotate, the transmission sleeve drives the transmission shaft to rotate, and the transmission shaft drives the calibration mechanism to rotate. Since the transmission shaft is threadedly connected to the threaded sleeve, the transmission shaft can move linearly along the preset axis while rotating, thereby driving the calibration mechanism to move linearly. In this way, the calibration mechanism can be moved closer to or away from the assembly hole while rotating. When the device to be calibrated, such as an intraoral scanner, is installed at the assembly hole, the calibration mechanism can calibrate the intraoral scanner.

[0011] In an optional embodiment, the transmission sleeve is provided with a connected sliding hole and a guide hole, the axis of the sliding hole is consistent with the extension direction of the preset axis; a guide pin is provided on the transmission shaft, and the transmission shaft and the sliding hole are slidably matched in the extension direction of the preset axis; the guide pin and the guide hole are slidably matched in the extension direction of the preset axis, and the guide pin and the guide hole are relatively fixed in the circumferential direction of the sliding hole.

[0012] Based on the above scheme, the sliding hole guides the transmission shaft to slide relative to the transmission sleeve, and the position of the transmission shaft is accurate, which is convenient for positioning and installation. In addition, since the guide pin is installed in the guide hole, the guide pin and the guide hole can be slidably matched, and the guide pin will not rotate relative to the guide hole. In this way, the transmission shaft can only slide relative to the transmission sleeve, but will not rotate relative to the transmission sleeve. When the transmission shaft slides, it relies on the cooperation of the guide pin and the guide hole to play a guiding role, and the sliding of the transmission shaft is stable and reliable.

[0013] In an optional embodiment, the driving mechanism also includes a mounting base, which includes a first side plate, a bottom plate and a second side plate that are connected, the first side plate and the second side plate are located on the same side of the bottom plate and are arranged at intervals in the extension direction of the preset axis; a first positioning hole is provided on the first side plate, and one end of the transmission sleeve can be rotatably installed in the first positioning hole; a second positioning hole is provided on the second side plate, and the other end of the transmission sleeve can be rotatably installed in the second positioning hole; the threaded sleeve is fixed in the second positioning hole; and the mounting base is connected to the casing.

[0014] Based on the above scheme, the drive mechanism is integrated into a modular structure, and components such as the motor, transmission sleeve, transmission shaft and threaded sleeve are all integrated on the mounting base. The drive mechanism can assemble multiple components outside the casing without being affected by the limited space inside the casing. The relative positions of multiple components are easy to adjust, which improves the accuracy of the installation position. Moreover, the entire drive mechanism can be disassembled and assembled together, and the disassembly and assembly steps of the drive mechanism are simple and easy to operate.

[0015] In an optional embodiment, at least one of the first detection module and the second detection module is configured as an infrared sensor.

[0016] Based on the above solution, the first detection module and the second detection module have simple structures and work stably and reliably.

[0017] In an optional embodiment, the calibration mechanism includes a fixed seat, a calibration plate and a reflective plate, the fixed seat is connected to the driving mechanism, the calibration plate is connected to the fixed seat and is arranged at an acute angle or an obtuse angle relative to a preset axis; the reflective plate is installed on the fixed seat, and the reflective plate is used to reflect infrared rays emitted by the transmitting end of the infrared sensor to the receiving end of the infrared sensor.

[0018] Based on the above scheme, during the movement of the calibration mechanism, the transmitting end of the infrared sensor can emit infrared rays. When the calibration mechanism moves to the position of the infrared sensor, the reflector blocks the infrared rays and reflects the infrared rays to the receiving end of the infrared sensor. The infrared sensor transmits the feedback information to the processor, and uses the processor to control the operating status of the motor with sensitive control.

[0019] In an optional embodiment, the intraoral scanner calibration device further includes a carrier, the first detection module and the second detection module are both mounted on the carrier, and the carrier is connected to the housing.

[0020] Based on the above scheme, the first detection module and the second detection module are both installed on the supporting frame. The positions of the first detection module and the second detection module can be adjusted on the supporting frame, and then the supporting frame is connected to the casing, so as to achieve the coordination between the first detection module and the second detection module and the casing, which is convenient for installation.

[0021] In an optional embodiment, at least one of the first detection module and the second detection module is slidably matched with the carrier in the extension direction of the preset axis.

[0022] Based on the above solution, by adjusting the position of the first detection module or the second detection module, the distance between the two can be adjusted, so that the movement range of the calibration mechanism can be adjusted to meet the calibration requirements of different scenarios.

[0023] In an optional embodiment, an adjustment channel is provided on the carrier; an adjustment screw is rotatably mounted on the outer shell of the first detection module or the outer shell of the second detection module, and a clamping nut is externally threaded on the adjusting screw; the adjusting screw is passed through the adjustment channel, and the adjusting screw and the adjusting channel are slidably matched in the extension direction of a preset axis; the clamping nut cooperates with the outer shell to clamp the carrier to limit the sliding of the adjusting screw relative to the adjustment channel.

[0024] Based on the above scheme, when it is necessary to adjust the position of the first detection module or the second detection module, the clamping nut is loosened, and the clamping nut and the housing do not clamp the bearing component. At this time, the adjusting screw can slide along the preset axis in the adjusting hole, thereby adjusting the position. The adjusting screw is limited by the adjusting hole and can only slide on the preset axis. The adjustment operation is convenient and reliable. After the adjustment is completed, the clamping nut is rotated in the opposite direction so that the clamping nut and the housing cooperate to clamp the bearing component, and the adjusting screw cannot slide relative to the adjusting hole, thereby realizing the locking of the first detection module or the second detection module relative to the bearing component.

[0025] In an optional embodiment, the adjustment channel is configured as an adjustment groove, and a notch of the adjustment groove is located on a side surface of the carrier in an extension direction of a preset axis.

[0026] Based on the above solution, since the notch of the adjusting groove is located at the side of the bearing component, the housing can be inserted into the adjusting groove from the notch, which is convenient for operation.

[0027] The beneficial effects of the embodiments of the present invention include, for example:

[0028] In summary, the intraoral scanner calibration device provided in this embodiment can drive the calibration mechanism to be close to or away from the intraoral scanner through the driving mechanism, so as to perform calibration operations on the intraoral scanner through the calibration mechanism. Since the driving mechanism can automatically drive the calibration mechanism to move, the automated calibration operation is realized, which saves time and effort, is highly efficient, reduces the degree of human participation, reduces errors, and can improve the accuracy of the calibration results. At the same time, during calibration, the first detection module is located on one side of the principle assembly hole of the second detection module as an example for explanation, that is, the first detection module is farther away from the assembly hole than the second detection module. The initial position of the calibration mechanism is determined by the first detection module. As the calibration mechanism performs the calibration operation, the calibration mechanism gradually approaches the second detection module. When the second detection module obtains the position of the calibration mechanism, it indicates that the calibration mechanism completes the calibration operation. At this time, the driving mechanism stops the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of an intraoral scanner calibration device according to an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a carrier according to an embodiment of the present application;

[0032] Figure 3 It is a schematic diagram of the coordination of the carrier, the first detection module and the second detection module in an embodiment of the present application.

[0033] icon:

[0034] 100-housing; 101-assembly hole; 200-driving mechanism; 210-motor; 220-transmission sleeve; 221-sliding hole; 222-guide hole; 230-transmission shaft; 240-threaded sleeve; 250-mounting seat; 251-first side plate; 252-bottom plate; 253-second side plate; 254-first positioning hole; 255-second positioning hole; 300-calibration mechanism; 310-fixed seat; 320-calibration plate; 330-reflection plate; 400-first detection module; 500-second detection module; 600-carrying member; 610-adjustment channel; 700-adjustment screw; 800-clamping nut. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0041] In the prior art, when calibrating the intraoral scanner, the calibration plate 320 is generally manually operated to move relative to the intraoral scanner, which is labor-intensive and inefficient. During manual operation, due to operator experience or misoperation, the calibration result may have large errors and poor accuracy.

[0042] In view of this, the designer provides an intraoral scanner calibration device that can realize automatic calibration with high efficiency, less manual intervention, small error and high accuracy of calibration results.

[0043] Please combine Figure 1 In this embodiment, the intraoral scanner calibration device includes a housing 100, a driving mechanism 200, a calibration mechanism 300, a first detection module 400 and a second detection module 500; the housing 100 is provided with an assembly hole 101 for positioning the device to be calibrated; the driving mechanism 200 is installed on the housing 100, and the driving mechanism 200 is connected to the calibration mechanism 300, and is used to drive the calibration mechanism 300 to rotate around a preset axis and approach or move away from the assembly hole 101 along the extension direction of the preset axis. The first detection module 400 and the second detection module 500 are both installed on the housing 100 and arranged at intervals on the preset axis, and the first detection module 400 and the second detection module 500 are both used to obtain the position of the calibration mechanism 300.

[0044] As described above, the intraoral scanner calibration device provided in this embodiment is used as follows:

[0045] The inner mouth scanner is installed at the assembly hole 101, and the driving mechanism 200 is started, so that it drives the calibration mechanism 300 to move to the position where the first detection module 400 is located, so as to achieve the reset of the calibration mechanism 300. That is, when the calibration mechanism 300 moves under the drive of the driving mechanism 200, when the calibration mechanism 300 moves to the position detected by the first detection module 400, the first detection module 400 transmits the information to the processor, and the processor is connected to the driving mechanism 200 for communication. At this time, the driving mechanism 200 is stopped, indicating that the calibration mechanism 300 is reset. Then, when the calibration operation is required, the driving mechanism 200 is started, so that it drives the calibration mechanism 300 to approach the assembly hole 101. When the calibration mechanism 300 moves to the position detected by the second detection module 500, it indicates that the calibration mechanism 300 completes the calibration operation, and the processor controls the driving mechanism 200 to stop running, so as to prevent the calibration mechanism 300 from continuing to approach the assembly hole 101 and colliding with the inner mouth scanner, thereby improving safety. During calibration, the calibration mechanism 300 is driven to move by the driving mechanism 200, which has a high degree of automation, saves time and effort, is highly efficient, reduces the degree of human participation, reduces errors, and can improve the accuracy of the calibration results.

[0046] The following embodiments illustrate the detailed structure of the intraoral scanner calibration device provided in the present application by way of examples.

[0047] Please combine Figure 1 In this embodiment, the driving mechanism 200 optionally includes a motor 210, a transmission sleeve 220, a transmission shaft 230, a threaded sleeve 240 and a mounting seat 250. The motor 210 is mounted on the mounting seat 250, and the mounting seat 250 is mounted on the housing 100. The transmission sleeve 220 is connected to the output shaft of the motor 210; the transmission shaft 230 is connected to the transmission sleeve 220, and the transmission shaft 230 and the transmission sleeve 220 are slidably matched in the extension direction of the preset axis, and the two are relatively fixed in the circumferential direction of the preset axis; the threaded sleeve 240 is mounted on the housing 100, and the transmission shaft 230 is screwed into the threaded sleeve 240; the transmission shaft 230 is connected to the calibration mechanism 300.

[0048] By integrating the motor 210, the transmission sleeve 220, the transmission shaft 230 and the threaded sleeve 240 on the mounting seat 250, the drive mechanism 200 is integrated into a modular structure. The drive mechanism 200 can assemble multiple components outside the housing 100 without being affected by the limited space inside the housing 100. The relative positions of the multiple components are easy to adjust, which improves the accuracy of the installation position. In addition, the entire drive mechanism 200 can be disassembled and assembled together, and the disassembly and assembly steps of the drive mechanism 200 are simple and easy to operate. It should be understood that the housing 100 can be a split structure and can be disassembled to facilitate the installation of the drive mechanism 200 in the housing 100 or removal from the housing 100.

[0049] During operation, after the motor 210 is started, it drives the transmission sleeve 220 to rotate, the transmission sleeve 220 drives the transmission shaft 230 to rotate, and the transmission shaft 230 drives the calibration mechanism 300 to rotate. Since the transmission shaft 230 is threadedly connected to the threaded sleeve 240, the transmission shaft 230 can move linearly along a preset axis while rotating, thereby driving the calibration mechanism 300 to move linearly. In this way, the calibration mechanism 300 can rotate while approaching or moving away from the assembly hole 101. When the device to be calibrated, such as an intraoral scanner, is installed at the assembly hole 101, the calibration mechanism 300 can calibrate the intraoral scanner.

[0050] Optionally, the transmission sleeve 220 is provided with a communicating sliding hole 221 and a guide hole 222, wherein the sliding hole 221 is a cylindrical hole, and the axis of the sliding hole 221 is parallel to the preset axis. The guide hole 222 is a bar hole, and the number of the guide holes 222 is two and they are arranged symmetrically, and the length direction of each guide hole 222 extends in the extension direction of the preset axis. A guide pin is provided on the transmission shaft 230, and the guide pin is a cylindrical pin, and the guide pin penetrates the transmission shaft 230 along the radial direction of the transmission shaft 230, and the guide pin is arranged perpendicular to the transmission shaft 230. The transmission shaft 230 is inserted into the sliding hole 221, and the transmission shaft 230 and the sliding hole 221 are slidably matched in the extension direction of the preset axis. The two ends of the guide pin are respectively inserted into the two guide holes 222, and the guide pin and the guide hole 222 are slidably matched in the extension direction of the preset axis, and the guide pin and the guide hole 222 are relatively fixed in the circumferential direction of the sliding hole 221.

[0051] With such a design, the sliding hole 221 guides the transmission shaft 230 to slide relative to the transmission sleeve 220, and the position of the transmission shaft 230 is accurate, which is convenient for positioning and installation. In addition, since the guide pin is installed in the guide hole 222, the guide pin and the guide hole 222 can be slidably matched, and the guide pin will not rotate relative to the guide hole 222. In this way, the transmission shaft 230 can only slide relative to the transmission sleeve 220, but will not rotate relative to the transmission sleeve 220. When the transmission shaft 230 slides, it relies on the cooperation of the guide pin and the guide hole 222 to play a guiding role, and the sliding of the transmission shaft 230 is stable and reliable.

[0052] Optionally, the mounting seat 250 includes a first side plate 251, a bottom plate 252, and a second side plate 253 connected to each other. The first side plate 251 and the second side plate 253 are located on the same side of the bottom plate 252 and are arranged at intervals in the extension direction of the preset axis. The mounting seat 250 is generally a U-shaped seat. A first positioning hole 254 is provided on the first side plate 251, and one end of the transmission sleeve 220 is rotatably mounted in the first positioning hole 254. A second positioning hole 255 is provided on the second side plate 253, and the other end of the transmission sleeve 220 is rotatably mounted in the second positioning hole 255. The threaded sleeve 240 is fixed in the second positioning hole. The bottom plate 252 can be fixedly connected to the housing 100 by bolts and other structural members.

[0053] In this embodiment, optionally, at least one of the first detection module 400 and the second detection module 500 is set as an infrared sensor. For example, in this embodiment, the first detection module 400 and the second detection module 500 can both be set as infrared sensors. The first detection module 400 and the second detection module 500 have a simple structure and work stably and reliably.

[0054] Please combine Figure 2-Figure 3 In this embodiment, optionally, the intraoral scanner calibration device further includes a carrier 600, on which the first detection module 400 and the second detection module 500 are both mounted, and the carrier 600 can be connected to the housing 100 by means of structural members such as screws. The first detection module 400 and the second detection module 500 are both mounted on the carrier, and the positions of the first detection module 400 and the second detection module 500 can be adjusted on the carrier 600, and then the carrier 600 is connected to the housing 100, so that the first detection module 400 and the second detection module 500 can be matched with the housing 100, and the installation is convenient.

[0055] Optionally, at least one of the first detection module 400 and the second detection module 500 is slidably matched with the carrier 600 in the extension direction of the preset axis. For example, in the present embodiment, the first detection module 400 and the second detection module 500 are both slidably matched with the carrier 600. For ease of description, in the present embodiment, the matching structure of the first detection module 400 and the carrier 600 is used as an example. It should be understood that by adjusting the position of the first detection module 400 or the second detection module 500, the distance between the two can be adjusted, so that the range of motion of the calibration mechanism 300 can be adjusted to meet the calibration requirements of different scenes.

[0056] Optionally, the bearing member 600 is configured as a plate-like structure, and an adjustment channel 610 is provided on the bearing member 600. After the bearing member 600 is installed on the housing 100, the adjustment channel 610 extends in the extension direction of the preset axis. An adjustment screw 700 is rotatably mounted on the outer shell of the first detection module 400, and a clamping nut 800 is externally threaded on the adjustment screw 700. The adjustment screw 700 is inserted into the adjustment channel 610, and the adjustment screw 700 and the adjustment channel 610 are slidably matched in the extension direction of the preset axis. The clamping nut 800 cooperates with the outer shell to clamp the bearing member 600 to limit the sliding of the adjustment screw 700 relative to the adjustment channel 610.

[0057] It should be understood that when the position of the first detection module 400 needs to be adjusted, the clamping nut 800 is loosened, and the clamping nut 800 and the housing do not clamp the bearing member 600. At this time, the adjusting screw 700 can slide along the preset axis in the adjustment hole to adjust the position. The adjusting screw 700 is limited by the adjustment hole and can only slide on the preset axis. The adjustment operation is convenient and reliable. After the adjustment is completed, the clamping nut 800 is rotated in the opposite direction so that the clamping nut 800 and the housing cooperate to clamp the bearing member 600, and the adjusting screw 700 cannot slide relative to the adjustment hole, thereby achieving the locking of the first detection module 400 or the second detection module 500 relative to the bearing member 600.

[0058] Further, the adjustment channel 610 is configured as an adjustment slot, the notch of which is located on the side of the carrier 600 in the extension direction of the preset axis. Since the notch of the adjustment slot is located on the side of the carrier 600, the housing can be inserted into the adjustment slot from the notch, which is convenient for operation.

[0059] In addition, the notch of the adjusting groove may be a tapered opening, which has the function of guiding the housing to enter the adjusting groove.

[0060] It should be noted that in order to realize the installation of the first detection module 400 and the second detection module 500, two adjustment channels 610 can be set on the carrier 600, and the notches of the two adjustment channels 610 are set back to back. An adjustment screw 700 can also be set on the outer shell of the second detection module 500. The connection between the second detection module 500 and the carrier 600 is realized by the cooperation of the adjustment screw 700 and the clamping nut 800.

[0061] In this embodiment, optionally, the calibration mechanism 300 includes a fixed seat 310, a calibration plate 320 and a reflective plate 330. The fixed seat 310 is connected to the driving mechanism 200. Specifically, the fixed seat 310 can be sleeved outside the transmission shaft 230 and fixed by bolts and other structural parts. The calibration plate 320 is connected to the fixed seat 310 and is set at an acute angle or an obtuse angle relative to the preset axis. The reflective plate 330 is installed on the fixed seat 310, and the reflective plate 330 is used to reflect the infrared rays emitted by the transmitting end of the infrared sensor to the receiving end of the infrared sensor.

[0062] It should be understood that during the movement of the calibration mechanism 300, the transmitting end of the infrared sensor can emit infrared rays. When the calibration mechanism 300 moves to the position of the infrared sensor, the reflective plate 330 blocks the infrared rays and reflects the infrared rays to the receiving end of the infrared sensor. The infrared sensor transmits the feedback information to the processor, and the processor is used to control the operating status of the motor 210 with high sensitivity.

[0063] In addition, the reflective plate 330 may be directly integrated on the fixing base 310 , and may be a partial structure of the fixing base 310 .

[0064] The intraoral scanner calibration device provided in this embodiment drives the calibration mechanism 300 to reciprocate linearly through the driving mechanism 200, thereby performing the calibration operation, which has high automation, high efficiency and high accuracy. In addition, the driving mechanism 200 is integrated into a module, which is convenient for disassembly and assembly, and the installation position is highly accurate. The first detection module 400 and the second detection module 500 are integrated together, which is convenient for disassembly and assembly, and the position adjustment of the two is convenient.

[0065] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An intraoral scanner calibration device, characterized in that: include: A housing (100), a driving mechanism (200), a calibration mechanism (300), a first detection module (400) and a second detection module (500); the housing (100) is provided with an assembly hole (101) for positioning a device to be calibrated; the driving mechanism (200) is mounted on the housing (100), and the driving mechanism (200) is connected to the calibration mechanism (300) and is used to drive the calibration mechanism (300) to rotate around a preset axis and approach or move away from the assembly hole (101) along the extension direction of the preset axis; the first detection module (400) and the second detection module (500) are both mounted on the housing (100) and are arranged at intervals on the preset axis, and the first detection module (400) and the second detection module (500) are both used to obtain the position of the calibration mechanism (300).

2. The intraoral scanner calibration device according to claim 1, characterized in that: The driving mechanism (200) comprises a motor (210), a transmission sleeve (220), a transmission shaft (230) and a threaded sleeve (240); the motor (210) is mounted on the housing (100); the transmission sleeve (220) is connected to the output shaft of the motor (210); the transmission shaft (230) is connected to the transmission sleeve (220); the transmission shaft (230) and the transmission sleeve (220) are slidably matched in the extension direction of a preset axis, and the two are relatively fixed in the circumferential direction of the preset axis; the threaded sleeve (240) is mounted on the housing (100); the transmission shaft (230) is threadedly connected in the threaded sleeve (240); and the transmission shaft (230) is connected to the calibration mechanism (300).

3. The intraoral scanner calibration device according to claim 2, characterized in that: The transmission sleeve (220) is provided with a connected sliding hole (221) and a guide hole (222), and the axis of the sliding hole (221) is consistent with the extension direction of the preset axis; the transmission shaft (230) is provided with a guide pin, and the transmission shaft (230) and the sliding hole (221) are slidably matched in the extension direction of the preset axis; the guide pin and the guide hole (222) are slidably matched in the extension direction of the preset axis, and the guide pin and the guide hole (222) are relatively fixed in the circumferential direction of the sliding hole (221).

4. The intraoral scanner calibration device according to claim 2, characterized in that: The driving mechanism (200) further comprises a mounting seat (250), wherein the mounting seat (250) comprises a first side plate (251), a bottom plate (252) and a second side plate (253) which are connected to each other, wherein the first side plate (251) and the second side plate (253) are located on the same side of the bottom plate (252) and are arranged at intervals in the extension direction of a preset axis; a first positioning hole (254) is provided on the first side plate (251), and one end of the transmission sleeve (220) is rotatably mounted in the first positioning hole (254); a second positioning hole (255) is provided on the second side plate (253), and the other end of the transmission sleeve (220) is rotatably mounted in the second positioning hole (255); the threaded sleeve (240) is fixed in the second positioning hole; and the mounting seat (250) is connected to the housing (100).

5. The intraoral scanner calibration device according to claim 1, characterized in that: At least one of the first detection module (400) and the second detection module (500) is configured as an infrared sensor.

6. The intraoral scanner calibration device according to claim 5, characterized in that: The calibration mechanism (300) comprises a fixing seat (310), a calibration plate (320) and a reflection plate (330); the fixing seat (310) is connected to the driving mechanism (200); the calibration plate (320) is connected to the fixing seat (310) and is arranged at an acute angle or an obtuse angle relative to a preset axis; the reflection plate (330) is mounted on the fixing seat (310); the reflection plate (330) is used to reflect infrared rays emitted by a transmitting end of the infrared sensor to a receiving end of the infrared sensor.

7. The intraoral scanner calibration device according to claim 1, characterized in that: The intraoral scanner calibration device further comprises a carrier (600), the first detection module (400) and the second detection module (500) are both mounted on the carrier (600), and the carrier (600) is connected to the housing (100).

8. The intraoral scanner calibration device according to claim 7, characterized in that: At least one of the first detection module (400) and the second detection module (500) is slidably matched with the carrier (600) in the extension direction of the preset axis.

9. The intraoral scanner calibration device according to claim 8, characterized in that: The bearing member (600) is provided with an adjustment channel (610); an adjustment screw (700) is rotatably mounted on the outer shell of the first detection module (400) or the outer shell of the second detection module (500), and a clamping nut (800) is externally threaded on the adjustment screw (700); the adjustment screw (700) is inserted into the adjustment channel (610), and the adjustment screw (700) and the adjustment channel (610) are slidably matched in the extension direction of the preset axis; The clamping nut (800) cooperates with the housing to clamp the bearing member (600) to limit the sliding of the adjusting screw (700) relative to the adjusting channel (610).

10. The intraoral scanner calibration device according to claim 9, characterized in that: The adjustment channel (610) is configured as an adjustment groove, and a notch of the adjustment groove is located on a side surface of the carrier (600) in an extension direction of a preset axis.

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