CN113116293B - Oral cavity scanning device and optical plane calibration device - Google Patents
Oral cavity scanning device and optical plane calibration device Download PDFInfo
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- CN113116293B CN113116293B CN201911409913.8A CN201911409913A CN113116293B CN 113116293 B CN113116293 B CN 113116293B CN 201911409913 A CN201911409913 A CN 201911409913A CN 113116293 B CN113116293 B CN 113116293B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
- A61B2560/0228—Operational features of calibration, e.g. protocols for calibrating sensors using calibration standards
- A61B2560/0233—Optical standards
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C2204/00—Features not otherwise provided for
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Abstract
The invention discloses an oral cavity scanning device and a calibration device of an optical plane. The calibration platform is provided with a bearing part and an abutting part fixedly connected with the bearing part. The moving device is arranged on the base and comprises a slope ring and a step ring. The abutting part can move in the first direction through the combined action of the slope ring and the step ring, so that the height of the calibration platform is adjusted to calibrate or correct the optical plane of the target object. The invention can solve the problems of high precision requirement and high cost of the calibration device in the prior art for related instruments.
Description
Technical Field
The invention relates to the technical field of optical plane calibration, in particular to an oral cavity scanning device and an optical plane calibration device.
Background
In practical application, each oral scanner needs to be matched with a calibration instrument when being shipped, and the instrument has the function of moving an image correction pattern with the size of 12 x 12mm to a plurality of positions in the range of 10mm before and after the orientation plane of the oral scanner for system correction.
The prior art has the problem that the image calibration pattern is mounted on the head of a linear stepping motor, and the linear stepping motor controls the image calibration pattern to move back and forth, but the design has the following problems: since the accuracy of the moving distance and the perpendicularity of the image correction pattern plane with respect to the optical axis are both dependent on the precision and the cost of the stepping motor, the accuracy of the industrial or instrument-grade motor for this instrument is high, the cost is low, and the deterioration after the use of high-order numbers is less grasped.
Disclosure of Invention
Therefore, an object of the present invention is to provide an oral cavity scanning device and a calibration device of an optical plane, so as to solve the problems of the prior art that the calibration device has high requirements on the precision of the related instruments and has high cost.
To achieve the above object, the present invention provides an optical plane calibration apparatus, including: the base is provided with a first rotating shaft; the calibration platform is movably arranged on the base along a first direction and is provided with a bearing part and an abutting part fixedly connected with the bearing part, the bearing part is used for placing a calibration object, and a first sliding element is arranged on the calibration platform; and the mobile device is arranged on the base. And the mobile device includes: the slope ring is rotatably arranged around the first rotating shaft and provided with a slope, the first sliding element can move on the slope when the slope ring rotates, and the height of the slope in the first direction is increased along the second direction; the stepped ring is rotatably arranged around the first rotating shaft and has a stepped structure, the stepped structure comprises a first step and a second step which are sequentially arranged along the second direction, and the heights of the first step and the second step in the first direction are sequentially increased; when the abutting part is positioned at the first step, the first sliding element is not in contact with the slope, and the abutting part has a first height between the base and the abutting part in the first direction; the slope ring rotates along a third direction opposite to the second direction, the first sliding element contacts the slope and moves on the slope, when the abutting part has a second height between the abutting part and the base in the first direction, the slope ring stops rotating, the step ring rotates along the third direction until the abutting part is opposite to a second step of the step structure in the first direction, the slope ring rotates along a second direction opposite to the second direction until the abutting part contacts a step surface of the second step, and at the moment, the abutting part has a third height between the first direction and the base; the third height is smaller than the second height and larger than the first height, and the first direction is parallel to the first rotating shaft.
As an optional technical solution, the step ring is surrounded by at least two identical step structures, the slope ring is correspondingly surrounded by at least two identical slopes, the calibration platform has at least two abutting portions uniformly distributed, and the step structures and the slopes correspond one to one.
As an optional technical solution, the first sliding element is disposed on one side of the abutting portion, which faces the slope.
As an optional technical solution, the first sliding element is a roller; or, the first sliding element is a sliding block, a corresponding slide way is arranged on the slope, and the sliding block is slidably arranged on the slide way.
As an optional technical solution, the step structure further includes a third step, the first step, the second step and the third step are sequentially arranged along the second direction, and heights of the first step, the second step and the third step in the first direction are sequentially increased; when the abutting part is located at the second-stage step, the slope ring continues to rotate along the third direction, the first sliding element contacts the slope and moves on the slope, when the abutting part has a fourth height between the first direction and the base, the slope ring stops rotating, the step ring rotates along the third direction until the abutting part is opposite to a third-stage step of the stepped structure in the first direction, the slope ring rotates along the second direction until the abutting part contacts a step surface of the third-stage step, and at the moment, the abutting part has a fifth height between the first direction and the base, and the fifth height is smaller than the fourth height and larger than the third height.
As an optional technical solution, the calibration device further includes a support column fixed on the base, and the abutting portion is sleeved on the support column, and when the calibration platform moves in the first direction, the abutting portion moves in the first direction along the support column.
As an optional technical solution, an elastic element is further sleeved on the pillar, and the elastic element applies an elastic force to the abutting portion.
As an optional technical solution, the calibration device further includes a driving device, the driving device includes a first driving module, a second driving module and a coaxial sleeve, the coaxial sleeve includes a first sleeve and a second sleeve which are coaxially disposed, the first sleeve is fixedly connected with the slope ring, the second sleeve is fixedly connected with the ladder ring, wherein the first driving module includes a first sleeve, a first connecting rod and a first motor, the first rotating shaft is disposed in the first sleeve, a first end of the first connecting rod is fixedly connected with the first sleeve, and a second end of the first connecting rod is coaxially fixedly connected with an output end of the first motor; the second driving module comprises a second sleeve, a second connecting rod and a second motor, wherein the first end of the second connecting rod is fixedly connected with the second sleeve, and the second end of the second connecting rod is coaxially and fixedly connected with the output end of the second motor.
As an alternative solution, the lower part of the bearing part is provided with a lower extension part, and the first sliding element is fixed on the lower extension part.
The present invention also provides an oral cavity scanning device, comprising: an oral scanner; the calibration device of the optical plane is also provided with a shell, the shell is provided with an opening, the oral cavity scanner is placed at the opening, and the orientation surface of the oral cavity scanner is opposite to the correction object.
Compared with the prior art, the optical plane calibration device has the advantages that due to the structural characteristics of the optical plane calibration device, the abutting part can move in the first direction through the combined action of the slope ring and the step ring, so that the height of the calibration platform is adjusted to calibrate or correct the optical plane of the target object, the calibration device can be suitable for mass production of thousands of scales even if only cheap or common parts are used, errors are not prone to occurring, and the grade precision of an optical measurement jig can be achieved.
The advantages and spirit of the present invention can be further understood by the following detailed description of the invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of an optical plane calibration apparatus according to the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic view of the ramp ring of FIG. 1;
FIG. 4 is a schematic view of the stepped ring of FIG. 1;
FIG. 5 is a schematic view of the ramp ring of FIG. 1 in combination with a calibration platform;
FIG. 6 is a schematic diagram of the mobile device of FIG. 1 in combination with a calibration platform;
FIG. 7 is a schematic view of the calibration platform moving onto the second step ladder;
FIG. 8 is a schematic cross-sectional view of another portion of the structure of FIG. 1;
fig. 9 is a schematic structural view of a driving device portion in fig. 1.
Detailed Description
The invention provides an oral cavity scanning device which comprises an oral cavity scanner and an optical plane calibration device as described below.
Referring to fig. 1 and 2, fig. 1 is a schematic view of an optical plane calibration apparatus according to the present invention; fig. 2 is a schematic cross-sectional view of a portion of the structure of fig. 1. The invention provides a calibration device 1 of an optical plane, wherein a shell is arranged outside the calibration device 1, and the shell is an aluminum extruded shell. And the shell is provided with an opening, the oral cavity scanner is placed at the opening, and the orientation plane of the oral cavity scanner is opposite to the calibration object 100 on the calibration device 1. The calibration device 1 includes a base 2, a calibration platform 3, and a moving device 4.
The base 2 is provided with a first rotating shaft 43, the calibration platform 3 is movably disposed on the base 2 along a first direction D1, the calibration platform 3 has a bearing portion 31 and an abutting portion 32 fixedly connected to the bearing portion 31, the bearing portion 31 is used for placing the calibration object 100, the opening is opposite to the calibration object 100, and the calibration platform 3 is provided with a first sliding element 33. The fixing connection between the bearing portion 31 and the abutting portion 32 is not limited, and for example, the bearing portion 31 and the abutting portion 32 may be connected by a fixing member, or the bearing portion 31 and the abutting portion 32 may be integrally formed and connected.
The moving device 4 is disposed on the base 2, and the moving device 4 includes a slope ring 41 and a step ring 42, the slope ring 41 is rotatably disposed around a first rotating shaft 43, and the slope ring 41 has a slope 411, when the slope ring 41 rotates, the first sliding element 33 is movable on the slope 411, and the height of the slope 411 in the first direction D1 is from low to high along the second direction D2. The step ring 42 is rotatably disposed around the first rotating shaft 43, the step ring 42 has step structures 422, and each step structure 422 includes a first step 4221 and a second step 4222 sequentially arranged along the second direction D2, and heights of the first step 4221 and the second step 4222 sequentially increase in the first direction D1. As shown in fig. 1, the second direction D2 is a counterclockwise direction, but the invention is not limited thereto, and in another embodiment, the second direction D2 may be set to be a clockwise direction, and accordingly, the subsequent rotation direction may be changed accordingly.
When the abutting portion 32 is located at the first step 4221, the first sliding element 33 is not in contact with the slope 411, and the abutting portion 32 has a first height from the base 2 in the first direction D1; the first rotating shaft 43 is driven by the driving device to rotate and drive the slope ring 41 to rotate along the third direction D3, the first sliding element 33 contacts the slope 411 and moves on the slope 411, when the abutting portion 32 has a second height between the first direction D1 and the base 2, the driving device is turned off, the slope ring 41 stops rotating, the driving device drives the first rotating shaft 43 to rotate and drive the step ring 42 to rotate along the third direction D3 until the abutting portion 32 faces the second step 4222 of the step structure 422 in the first direction D1, the driving device is further used to drive the first rotating shaft 43 to rotate and drive the slope ring 41 to rotate along the second direction D2 until the abutting portion 32 contacts the step surface of the second step 4222 of the step structure 422, the abutting portion 32 has a third height between the base 2 and the first direction D1, the third height is smaller than the second height and larger than the first height, and the positioning platform is raised by one step. The first direction D1 is parallel to the extending direction of the first rotating shaft 43, the second direction D2 is, for example, a counterclockwise direction, and the third direction D3 is, for example, a clockwise direction.
It should be noted that if the heights of the abutting portion 32 and the bearing portion 31 in the first direction are the same as the height between the base 2, that is, the two are in the same plane, the abutting portion 32 is lifted, that is, the bearing portion 31 is lifted or the positioning platform is lifted; similarly, even if the heights of the abutting portion 32 and the bearing portion 31 in the first direction are not consistent with the height of the base 2, the bearing portion 31 or the positioning platform is raised by a certain amount by raising the abutting portion 32 because the bearing portion 31 and the abutting portion 32 are fixedly connected, so that whether the abutting portion 32 and the bearing portion 31 are in the same plane does not affect the technical solution of the present invention.
Referring to fig. 3-7, fig. 3 is a schematic view of the ramp ring of fig. 1; FIG. 4 is a schematic view of the stepped ring of FIG. 1; FIG. 5 is a schematic view of the ramp ring of FIG. 1 in combination with a calibration platform; FIG. 6 is a schematic diagram of the mobile device shown in FIG. 1 in combination with a calibration platform; FIG. 7 is a schematic view of the calibration platform moving onto the second step. In the present embodiment as shown in fig. 7, each step structure further includes a third step 4223, the first step 4221, the second step 4222 and the third step 4223 are sequentially arranged along the second direction D2, and the heights of the first step 4221, the second step 4222 and the third step 4223 in the first direction D1 are sequentially increased.
When the abutting portion 32 is located at the second-stage step 4222, the driving device continues to drive the first rotating shaft 43 to rotate and drive the slope ring 41 to rotate along the third direction D3 (as shown in fig. 1, clockwise in this embodiment), the first sliding element 33 contacts the slope 411 and moves on the slope 411, when the abutting portion 32 has a fourth height between the first direction D1 and the base 2, the slope ring 41 stops rotating, and the driving device continues to drive the first rotating shaft to rotate and drive the step ring 42 to rotate along the third direction D3 until the abutting portion 32 directly faces the third-stage step 4223 of the step structure in the first direction D1, the driving device continues to drive the first rotating shaft to rotate and drive the slope ring 41 to rotate along the second direction D2 (as shown in fig. 1, clockwise in this embodiment) until the abutting portion 32 contacts a step surface of the third-stage step 4223 of the step structure, the abutting portion 32 has a fifth height between the first direction D1 and the base 2, and the fifth height is smaller than the fourth height and is larger than the third height, that is the step, that is, and the first-stage is located again.
However, the present invention is not limited thereto, for example, as shown in fig. 4, each step structure 422 includes six steps, specifically, a first step 4221, a second step 4222, a third step 4223, a fourth step 4224, a fifth step 4225 and a sixth step 4226, and for the present invention, the more the number of steps, the higher the precision of the optical plane correction. However, for convenience of illustration and understanding, the present embodiment is described only with each step structure including three steps, but the present invention is not limited thereto, and is subject to practical use and requirements. Also, the operation method of the abutting portion 32 or the carrying portion 31 for each step is the same as the operation method or process of the step from the first step to the second step and the step from the second step to the third step, and so on.
In addition, please continue to refer to fig. 1, 8 and 9, fig. 8 is a schematic cross-sectional view of another portion of the structure shown in fig. 1; fig. 9 is a schematic structural view of a driving device portion in fig. 1. The calibration device further comprises a driving device, and the driving device comprises a first driving module, a second driving module and a coaxial sleeve. The coaxial sleeve comprises a first sleeve 1000 and a second sleeve 2000 which are coaxially arranged, the first sleeve 1000 is fixedly connected with the slope ring 41, and the second sleeve 2000 is fixedly connected with the stepped ring 42. The first driving module comprises a first connecting rod 1001 and a first motor 1002, and the second driving module comprises a second connecting rod 2001 and a second motor 2002, wherein the coaxial sleeve structure in the present embodiment can be equivalent to the first rotating shaft 43, and the first sleeve 1000 and the second sleeve 2000 can rotate around the shaft without requiring a solid shaft; in different embodiments, to enhance the stability of the rotation around the shaft, the first rotating shaft 43 may also be actually disposed in the first sleeve 1000, and the second sleeve 2000 is sleeved outside the first sleeve 1000, but the invention is not limited to this, and in another embodiment, the first rotating shaft 43 may also be disposed in the second sleeve 2000, and the first sleeve 1000 is sleeved outside the second sleeve 2000. In addition, in the present embodiment, the first end 10011 of the first link 1001 is sleeved outside the first sleeve 1000 and is located at the first end 10001 of the first coaxial sleeve 1000, and the second end 10012 of the first link 1001 is coaxially and fixedly connected with the output end of the first motor 1002. A first end 20011 of the second connecting rod 2001 is sleeved outside the second sleeve 2000 and located at the first end 20001 of the second sleeve 2000, and a second end 20012 of the second connecting rod 2001 is coaxially and fixedly connected with an output end of the second motor 2002.
The first motor 1002 drives the first connecting rod 1001 coaxially connected with the output end thereof to rotate, and the first connecting rod 1001 further drives the first sleeve 1000 fixed with the first connecting rod to rotate around the first rotating shaft 43, so that the rotation of the slope ring 41 is realized; in addition, the second motor 2002 drives the second connecting rod 2001 coaxially connected with the output end thereof to rotate, and the second connecting rod 2001 drives the second sleeve 2000 fixed with the second connecting rod to rotate around the first rotating shaft 43, so that the rotation of the stepped ring 42 is realized. That is, the first driving module controls the rotation of the ramp ring 41 through the first rotating shaft 43, and the second driving module controls the rotation of the step ring 42 through the first rotating shaft 43. However, due to the structural composition of the calibration device, the precision requirement on the driving module is not high, and even if the rotation of the step ring and the slope ring is different by a few degrees, the abutting part can still fall on the step (surface). Even if the driving module (such as servo module, also called steering engine or servo motor) widely used for remote control model before 40 years can meet the requirement, and the servo module shell is integrated with a direct current motor, a reduction gear and a servo circuit, 2 lines are used for supplying DC,2 lines are used for inputting PWM signals to specify the rotation angle, in recent years, the price is continuously reduced due to the popularity of the self-control toy robot, and the cost is greatly reduced.
Furthermore, in order to make the correction accuracy of the optical plane more accurate, the step ring 42 is surrounded by at least two identical step structures 422, correspondingly, the slope ring is surrounded by at least two identical slopes, the calibration platform has at least two abutting portions which are uniformly distributed, and the step structures and the slopes are in one-to-one correspondence. Moreover, in the present embodiment, the stepped ring 42 is formed by three same stepped structures 422, correspondingly, the slope ring 41 is formed by three same slopes 411, the calibration platform 3 has three evenly distributed abutting portions 32, and each abutting portion 32 corresponds to one of the stepped structures 422 and one slope 411, that is, when one abutting portion 32 is located at the first step of the corresponding stepped structure 422, the other two abutting portions 32 also correspond to the first step of the corresponding stepped structure 422; if one of the abutments 32 is located at the second-level step of the corresponding stepped structure 422, the other two abutments 32 are also located at the second-level step of the corresponding stepped structure 422, and so on. However, the present invention is not limited to the above embodiments, and the number of the abutting portions, the slopes, and the stepped structures may be set according to actual use requirements in order to ensure the accuracy requirement.
Also, the first slide member 33 is provided on the side of the abutting portion 32 facing the slope 411. Preferably, the first sliding element 33 is a roller, and the slope is a smooth arc slope structure, so that the roller can smoothly roll on the slope. In another embodiment, the first sliding element may also be a sliding block, and correspondingly, a sliding way is disposed on the slope, and the sliding block is slidable in the sliding way.
In addition, in the present embodiment, the step ring 42 is sleeved outside the slope ring 41, but the present invention is not limited thereto, and in another embodiment, the slope ring 41 may be sleeved outside the step ring 42, and the purpose of raising the positioning platform may also be achieved.
Moreover, as shown in fig. 1 and fig. 2, the calibration device further includes a support column 20 fixed on the base 2, and a through hole structure 321 is disposed on the abutting portion 32, the abutting portion 23 is sleeved on the support column 20 by the through hole structure 321, when the calibration platform moves in the first direction D1, the abutting portion 32 moves along the support column 20 in the first direction D1.
The supporting column 20 is further sleeved with an elastic element 201, and the elastic element 201 applies an elastic force to the abutting portion 32. The elastic element 201 may be a spring or a leaf spring structure, and is supported between the top end of the pillar 20 and the abutting portion 32, and when the abutting portion 32 moves along the pillar 20 in the first direction D1, the elastic element 201 provides an elastic force to the abutting portion 32. Also, preferably, the number of struts 20 is the same as the number of abutments 32, and there is a one-to-one correspondence.
In the present embodiment, the lower part of the bearing part 31 is also provided with a lower part 311, and the first sliding element 33 is fixed on the lower part 311. In another embodiment, the first sliding element 33 may be disposed directly below the abutment 32.
In summary, according to the calibration device for the optical plane of the present invention, due to its own structural features, the abutting portion can move in the first direction through the combined action of the slope ring and the step ring, so as to adjust the height of the calibration platform to calibrate or correct the optical plane of the target object, so that the calibration device can be suitable for mass production of thousands of scales even if only using cheap or common gauge parts, is not prone to error, and can achieve the level accuracy of the optical measurement jig.
The above detailed description of the preferred embodiments is intended to more clearly illustrate the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims. The scope of the claims of the present invention should therefore be accorded the broadest interpretation so as to encompass all such possible modifications and equivalent arrangements as is done in the foregoing description.
Claims (10)
1. An optical plane calibration device, comprising:
the base is provided with a first rotating shaft;
the calibration platform is movably arranged on the base along a first direction and is provided with a bearing part and an abutting part fixedly connected with the bearing part, the bearing part is used for placing a calibration object, and a first sliding element is arranged on the calibration platform; and
the mobile device sets up on this base, and this mobile device includes:
the slope ring is rotatably arranged around the first rotating shaft and provided with a slope, the first sliding element can move on the slope when the slope ring rotates, and the height of the slope in the first direction is increased along the second direction; and
the stepped ring is rotatably arranged around the first rotating shaft and has a stepped structure, the stepped structure comprises a first step and a second step which are sequentially arranged along the second direction, and the heights of the first step and the second step in the first direction are sequentially increased;
when the abutting part is positioned at the first step, the first sliding element is not in contact with the slope, and the abutting part has a first height between the base and the abutting part in the first direction; the slope ring rotates along a third direction opposite to the second direction, the first sliding element contacts the slope and moves on the slope, when the abutting part has a second height between the abutting part and the base in the first direction, the slope ring stops rotating, the step ring rotates along the third direction until the abutting part is opposite to a second step of the step structure in the first direction, the slope ring rotates along a second direction opposite to the second direction until the abutting part contacts a step surface of the second step, and at the moment, the abutting part has a third height between the first direction and the base; the third height is smaller than the second height and larger than the first height, and the first direction is parallel to the first rotating shaft.
2. The calibration device as claimed in claim 1, wherein the step ring is surrounded by at least two identical step structures, the slope ring is surrounded by at least two identical slopes, the calibration platform has at least two evenly distributed abutting portions, and the step structures and the slopes correspond one to one.
3. The calibration device as claimed in claim 1, wherein the first sliding element is disposed on a side of the abutting portion facing the slope.
4. The calibration device as claimed in claim 1, wherein the first sliding element is a roller; or, the first sliding element is a sliding block, a corresponding slide way is arranged on the slope, and the sliding block is slidably arranged on the slide way.
5. The calibration device as claimed in claim 1, wherein the step structure further comprises a third step, the first step, the second step and the third step are sequentially arranged along the second direction, and the heights of the first step, the second step and the third step in the first direction increase sequentially;
when the abutting part is located at the second-stage step, the slope ring continues to rotate along the third direction, the first sliding element contacts the slope and moves on the slope, when the abutting part has a fourth height between the first direction and the base, the slope ring stops rotating, the step ring rotates along the third direction until the abutting part is opposite to a third-stage step of the stepped structure in the first direction, the slope ring rotates along the second direction until the abutting part contacts a step surface of the third-stage step, and at the moment, the abutting part has a fifth height between the first direction and the base, and the fifth height is smaller than the fourth height and larger than the third height.
6. The calibrating apparatus according to claim 1, further comprising a supporting column fixed to the base, wherein the abutting portion is disposed on the supporting column, and when the calibrating platform moves in the first direction, the abutting portion moves along the supporting column in the first direction.
7. The calibrating device according to claim 6, wherein an elastic element is further sleeved on the supporting column, and the elastic element exerts an elastic force on the abutting portion.
8. The calibration device according to claim 1, further comprising a driving device, wherein the driving device includes a first driving module, a second driving module, and a coaxial sleeve, the coaxial sleeve includes a first sleeve and a second sleeve coaxially disposed, the first sleeve is fixedly connected to the ramp ring, the second sleeve is fixedly connected to the step ring, wherein the first driving module includes a first connecting rod and a first motor, the first rotating shaft is located in the first sleeve, a first end of the first connecting rod is fixedly connected to the first sleeve, and a second end of the first connecting rod is fixedly connected to an output end of the first motor coaxially; the second driving module comprises a second connecting rod and a second motor, wherein the first end of the second connecting rod is fixedly connected with the second sleeve, and the second end of the second connecting rod is coaxially and fixedly connected with the output end of the second motor.
9. The calibrating device according to claim 1, wherein the supporting portion has a lower portion below, and the first sliding member is fixed to the lower portion.
10. An oral scanning device, comprising:
an oral scanner; and
an optical plane calibration device as claimed in any one of claims 1 to 9, further comprising a housing, wherein the housing is provided with an opening, the oral scanner is placed at the opening, and the orientation plane of the oral scanner faces the calibration object.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409913.8A CN113116293B (en) | 2019-12-31 | 2019-12-31 | Oral cavity scanning device and optical plane calibration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409913.8A CN113116293B (en) | 2019-12-31 | 2019-12-31 | Oral cavity scanning device and optical plane calibration device |
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| Publication Number | Publication Date |
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| CN113116293A CN113116293A (en) | 2021-07-16 |
| CN113116293B true CN113116293B (en) | 2023-01-03 |
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| CN201911409913.8A Active CN113116293B (en) | 2019-12-31 | 2019-12-31 | Oral cavity scanning device and optical plane calibration device |
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| KR102682978B1 (en) * | 2021-12-24 | 2024-07-09 | 주식회사 디디에스 | Calibration Device for Intra-Oral Scanner and Intra-Oral Scanner System |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1969218A (en) * | 2004-06-21 | 2007-05-23 | 日本电产三协株式会社 | Light beam scanning device |
| CN106761136A (en) * | 2016-12-27 | 2017-05-31 | 青岛海尔股份有限公司 | Automatic door operator and the refrigerator with the device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1969218A (en) * | 2004-06-21 | 2007-05-23 | 日本电产三协株式会社 | Light beam scanning device |
| CN106761136A (en) * | 2016-12-27 | 2017-05-31 | 青岛海尔股份有限公司 | Automatic door operator and the refrigerator with the device |
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