CN114224531A - Invisible tooth socket visual positioning and polishing system - Google Patents
Invisible tooth socket visual positioning and polishing system Download PDFInfo
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- CN114224531A CN114224531A CN202111563712.0A CN202111563712A CN114224531A CN 114224531 A CN114224531 A CN 114224531A CN 202111563712 A CN202111563712 A CN 202111563712A CN 114224531 A CN114224531 A CN 114224531A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- Dentistry (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computational Linguistics (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a visual positioning and polishing system for an invisible tooth socket, which belongs to the technical field of tooth correction and comprises a polishing unit, a character string identification unit, a database, a calibration unit and an offset calculation unit, wherein the polishing unit, the character string identification unit, the database, the calibration unit and the offset calculation unit in the system are in data communication in a signal connection mode. This stealthy facing visual positioning system of polishing carries out the central conversion based on the offset through the rotation center with the location centre bore of polishing, has realized the automatic process of polishing and replacing traditional die press, has improved work efficiency greatly under the prerequisite of guaranteeing the quality, the manual work of comparing says, this system precision is high, the position cutting is accurate and stable, read and match with the database through the character string on the stealthy facing, realize traceing back of data, guarantee the accuracy of stealthy facing product information.
Description
Technical Field
The invention belongs to the technical field of orthodontics, and particularly relates to a visual positioning and polishing system for an invisible tooth socket.
Background
The invisible tooth socket is a movable orthodontic device made of transparent elastic materials and designed and manufactured by computer assistance, is a sequential continuous orthodontic device and achieves the aim of orthodontic treatment of teeth through continuous small-range tooth movement.
In the prior art, the steps of the tooth model printed by the 3D printer in the process of manually manufacturing the tooth socket are complex, the tooth socket needs to be manually sorted according to client information, the tooth mould is checked, and the tooth socket is pressed by a die press, so that the accuracy control is poor, the position of the tooth socket is inaccurate, the final requirement of a client cannot be met, errors are easy to occur in the sorting process, the time of the whole process is long, and the efficiency is low.
In order to solve the problems, a visual positioning and polishing system for the invisible tooth socket is provided.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a visual positioning and polishing system for an invisible tooth socket, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a visual positioning and polishing system for invisible braces comprises a polishing unit, a character string identification unit, a database, a calibration unit and an offset calculation unit, wherein the polishing unit, the character string identification unit, the database, the calibration unit and the offset calculation unit in the system are in data communication in a signal connection mode;
the polishing unit is used for combining the invisible tooth socket with the offset calculated subsequently according to a preset polishing track to perform automatic polishing operation;
the character string recognition unit is used for recognizing the character content of the character string on the invisible mouthpiece by using an optical character recognition technology to acquire the data information of the patient to be corrected;
the database is used for reading the identified character strings, mining and matching data in the database, and verifying to obtain the data information of the corrected patient;
the calibration unit is used for calibrating the rotation center of the visual positioning, acquiring a plurality of rotation centers based on a fitting circle method, and obtaining the final rotation center position through deviation correction;
and the offset calculation unit is used for calculating the offset of the preset polishing positioning center hole on the invisible tooth socket and the calculated rotation center to realize center conversion.
Further optimize this technical scheme, the unit of polishing further includes:
the polishing mechanism is used for polishing the 3D printing-molded invisible tooth socket based on the built-in polishing track configuration parameters;
and the editing module receives the data of the offset calculation unit to adjust the configuration parameters of the polishing track, and edits the configuration parameters into a polishing program to perform automatic polishing.
Further optimizing the technical solution, the string recognition unit further includes:
the image processing module is used for scanning character strings, zooming character string images and rotating the character string images;
the layout division module is used for understanding, segmenting and normalizing the double-line character strings;
and the character string editing module is used for modifying and editing the identified character string.
Further optimizing the technical scheme, the character string on the invisible mouthpiece is a code for correcting the patient, the code is randomly generated by the system, and the code is fixed and unique.
Further optimizing the technical scheme, the system further comprises a data sorting module, wherein the data sorting module is used for sorting data after the matching is finished by reading the string of characters and matching patient data from the database, so that the polishing precision is improved.
Further optimizing the technical solution, the calibration unit further includes:
the rotating mechanism module is used for carrying out rotary shooting based on the visual shooting point positions, rotating once every 30 degrees and carrying out shooting record to obtain the coordinates of X-axis and Y-axis of a plurality of point positions;
the algorithm processing module is used for carrying out multi-point position circle fitting processing based on a halcon algorithm to obtain coordinates of a plurality of rotation centers on an X axis and a Y axis;
the deviation rectifying processing module is used for performing reverse operation on the coordinates of the plurality of rotation centers to obtain point location data planned under each rotation center, comparing the planned point location data with second point location information and obtaining the integral error of each rotation center, wherein the second point location information is a plurality of continuous point values under 30-degree rotation;
and the calibration determining module is used for determining the rotation center with the minimum error as the final rotation center.
Further optimizing the present technical solution, the offset calculating unit further includes:
the coordinate import module is used for importing coordinate data of the polishing positioning center hole and coordinate data of the rotating center;
the model calculation module is used for calculating the offset through the offset calculation model;
and the result output module is used for outputting the offset result calculated by the offset calculation model.
Further optimizing the technical scheme, an offset calculation model is built in the model calculation module, the offset calculation model respectively calculates the coordinate offset of the X axis and the Y axis in the coordinate data, and the offset calculation model in the model calculation module is shown in the following formula:
ΔY＝R sinθ
wherein, Δ X is X-axis coordinate offset, Δ Y is Y-axis coordinate offset, and R is rotation radius of the rotation center.
Further optimizing the technical scheme, the editing module obtains the position of center conversion based on the offset of the rotating center and the polishing positioning center hole after receiving the offset result output by the offset calculating unit, and the angle of the product is coincided with the angle of the polishing mechanism through the angular rotation of the position, so that the polishing mechanism can automatically polish.
Compared with the prior art, the invention provides a visual positioning and polishing system for an invisible facing, which has the following beneficial effects:
1. this stealthy facing visual positioning system of polishing carries out based on the offset through the pairing rotation center with the location centre bore of polishing and carries out the central conversion, has realized the automatic process of polishing and replacing traditional die press, has improved work efficiency greatly under the prerequisite of guaranteeing the quality, compares the manual work and says, and this system precision is high, and the position cutting is accurate and stable.
2. According to the invisible facing visual positioning polishing system, the character strings on the invisible facing are read and matched with the database, so that the traceability of data is realized, and the accuracy of the information of the invisible facing product is ensured.
Drawings
FIG. 1 is a schematic view of a structure of an invisible mouthpiece with a character string and a polishing positioning center hole according to the present invention;
FIG. 2 is a recognition image of a character string recognition unit in the invisible facing visual positioning polishing system according to the present invention;
FIG. 3 is a derivation aid diagram of an offset calculation model in an invisible facing visual positioning polishing system according to the present invention;
FIG. 4 is a derivation aid diagram of an offset calculation model in an invisible facing visual positioning polishing system according to the present invention;
fig. 5 is a schematic structural view of a visual positioning and polishing system for an invisible mouthpiece provided by the invention.
In the figure: 1. a character string; 2. and (5) polishing and positioning the central hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 5, the invisible braces visual positioning polishing system comprises a polishing unit, a character string recognition unit, a database, a calibration unit and an offset calculation unit, wherein the polishing unit, the character string recognition unit, the database, the calibration unit and the offset calculation unit in the system are in data communication in a signal connection mode;
the polishing unit is used for combining the invisible tooth socket with the offset calculated subsequently according to a preset polishing track to perform automatic polishing operation;
the character string recognition unit is used for recognizing the character content of the character string on the invisible mouthpiece by using an optical character recognition technology to acquire the data information of the corrected patient, as shown in fig. 2;
the database is used for reading the identified character strings, mining and matching data in the database, and verifying to obtain the data information of the corrected patient;
the calibration unit is used for calibrating the rotation center of the visual positioning, acquiring a plurality of rotation centers based on a fitting circle method, and obtaining the final rotation center position through deviation correction;
and the offset calculation unit is used for calculating the offset of a preset polishing positioning central hole 2 (the position of the polishing positioning central hole is shown in figure 1) on the invisible tooth socket and the calculated rotation center, so as to realize center conversion.
Specifically, the grinding unit further includes:
the polishing mechanism is used for polishing the 3D printing-molded invisible tooth socket based on the built-in polishing track configuration parameters;
and the editing module receives the data of the offset calculation unit to adjust the configuration parameters of the polishing track, and edits the configuration parameters into a polishing program to perform automatic polishing.
Specifically, the character string recognition unit further includes:
the image processing module is used for scanning character strings, zooming character string images and rotating the character string images;
the layout division module is used for understanding, segmenting and normalizing the double-line character strings;
and the character string editing module is used for modifying and editing the identified character string.
Specifically, as shown in fig. 1, the character string 1 on the invisible mouthpiece is a code of the corrected patient, the code is randomly generated by the system, and the code is fixed and unique.
Specifically, the system further comprises a data sorting module, wherein the data sorting module is used for sorting data after matching is completed by reading the string of characters and matching patient data from the database, so that the polishing precision is improved.
Specifically, the calibration unit further includes:
the rotating mechanism module is used for carrying out rotary shooting based on the visual shooting point positions, rotating once every 30 degrees and carrying out shooting record to obtain the coordinates of X-axis and Y-axis of a plurality of point positions;
the algorithm processing module is used for carrying out multi-point position circle fitting processing based on a halcon algorithm to obtain coordinates of a plurality of rotation centers on an X axis and a Y axis;
the deviation rectifying processing module is used for performing reverse operation on the coordinates of the plurality of rotation centers to obtain point location data planned under each rotation center, comparing the planned point location data with second point location information and obtaining the integral error of each rotation center, wherein the second point location information is a plurality of continuous point values under 30-degree rotation;
and the calibration determining module is used for determining the rotation center with the minimum error as the final rotation center.
Specifically, the offset amount calculation unit further includes:
the coordinate import module is used for importing coordinate data of the polishing positioning center hole and coordinate data of the rotating center;
the model calculation module is used for calculating the offset through the offset calculation model;
and the result output module is used for outputting the offset result calculated by the offset calculation model.
Specifically, an offset calculation model is built in the model calculation module, the offset calculation model calculates the X-axis coordinate offset and the Y-axis coordinate offset in the coordinate data, and the offset calculation model in the model calculation module is represented by the following formula:
ΔY＝R sinθ
wherein, Δ X is X-axis coordinate offset, Δ Y is Y-axis coordinate offset, and R is rotation radius of the rotation center.
Further, the above formula is derived:
as shown in fig. 3 and 4, knowing the rotation center coordinates and the rotation radius R, one can obtain:
R＝lOB＝lOA
then:
ΔX＝lAC
ΔY＝lBC
namely:
and solving the equation to obtain an offset calculation model.
Specifically, the editing module receives the offset result output by the offset calculation unit, obtains the position of center conversion based on the offset of the rotation center and the polishing positioning center hole, and enables the angle of the product to coincide with the angle of the polishing mechanism through the angular rotation of the position, so that the polishing mechanism can automatically polish.
The invention has the beneficial effects that:
1. this stealthy facing visual positioning system of polishing carries out based on the offset through the pairing rotation center with the location centre bore of polishing and carries out the central conversion, has realized the automatic process of polishing and replacing traditional die press, has improved work efficiency greatly under the prerequisite of guaranteeing the quality, compares the manual work and says, and this system precision is high, and the position cutting is accurate and stable.
2. According to the invisible facing visual positioning polishing system, the character strings on the invisible facing are read and matched with the database, so that the traceability of data is realized, and the accuracy of the information of the invisible facing product is ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A visual positioning and polishing system for invisible braces is characterized by comprising a polishing unit, a character string identification unit, a database, a calibration unit and an offset calculation unit, wherein the polishing unit, the character string identification unit, the database, the calibration unit and the offset calculation unit in the system are in data communication in a signal connection mode;
the polishing unit is used for combining the invisible tooth socket with the offset calculated subsequently according to a preset polishing track to perform automatic polishing operation;
the character string recognition unit is used for recognizing the character content of the character string on the invisible mouthpiece by using an optical character recognition technology to acquire the data information of the patient to be corrected;
the database is used for reading the identified character strings, mining and matching data in the database, and verifying to obtain the data information of the corrected patient;
the calibration unit is used for calibrating the rotation center of the visual positioning, acquiring a plurality of rotation centers based on a fitting circle method, and obtaining the final rotation center position through deviation correction;
and the offset calculation unit is used for calculating the offset of the preset polishing positioning center hole on the invisible tooth socket and the calculated rotation center to realize center conversion.
2. The invisible mouthpiece vision-localization polishing system of claim 1, wherein the polishing unit further comprises:
the polishing mechanism is used for polishing the 3D printing-molded invisible tooth socket based on the built-in polishing track configuration parameters;
and the editing module receives the data of the offset calculation unit to adjust the configuration parameters of the polishing track, and edits the configuration parameters into a polishing program to perform automatic polishing.
3. The invisible mouthpiece vision-localization polishing system of claim 1, wherein the character string recognition unit further comprises:
the image processing module is used for scanning character strings, zooming character string images and rotating the character string images;
the layout division module is used for understanding, segmenting and normalizing the double-line character strings;
and the character string editing module is used for modifying and editing the identified character string.
4. The system as claimed in claim 1, wherein the character string on the invisible mouthpiece is a code for correcting the patient, the code is randomly generated by the system, and the code is fixed and unique.
5. The invisible brace visual positioning polishing system of claim 1, further comprising a data sorting module, wherein the data sorting module is used for the system to improve polishing accuracy by reading the string of characters and matching patient data from a database, and sorting the data after matching.
6. The invisible mouthpiece vision-localization polishing system of claim 1, wherein the calibration unit further comprises:
the rotating mechanism module is used for carrying out rotary shooting based on the visual shooting point positions, rotating once every 30 degrees and carrying out shooting record to obtain the coordinates of X-axis and Y-axis of a plurality of point positions;
the algorithm processing module is used for carrying out multi-point position circle fitting processing based on a halcon algorithm to obtain coordinates of a plurality of rotation centers on an X axis and a Y axis;
the deviation rectifying processing module is used for performing reverse operation on the coordinates of the plurality of rotation centers to obtain point location data planned under each rotation center, comparing the planned point location data with second point location information and obtaining the integral error of each rotation center, wherein the second point location information is a plurality of continuous point values under 30-degree rotation;
and the calibration determining module is used for determining the rotation center with the minimum error as the final rotation center.
7. The invisible mouthpiece vision-localization polishing system of claim 1, wherein the offset calculation unit further comprises:
the coordinate import module is used for importing coordinate data of the polishing positioning center hole and coordinate data of the rotating center;
the model calculation module is used for calculating the offset through the offset calculation model;
and the result output module is used for outputting the offset result calculated by the offset calculation model.
8. The invisible braces visual positioning and polishing system according to claim 7, wherein the model calculation module is internally provided with an offset calculation model, the offset calculation model respectively calculates the X-axis coordinate offset and the Y-axis coordinate offset in the coordinate data, and the offset calculation model in the model calculation module is represented by the following formula:
ΔY＝R sinθ
wherein, the delta X is the coordinate offset of the X axis, the delta Y is the coordinate offset of the Y axis, and the R is the rotation radius of the rotation center.
9. The invisible brace visual positioning polishing system of claim 2, wherein the editing module obtains a center conversion position based on the offset of the rotation center and the polishing positioning center hole after receiving the offset result output by the offset calculation unit, and the angle of the product is overlapped with the angle of the polishing mechanism through the angular rotation of the position, so that the polishing mechanism performs automatic polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563712.0A CN114224531A (en) | 2021-12-20 | 2021-12-20 | Invisible tooth socket visual positioning and polishing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111563712.0A CN114224531A (en) | 2021-12-20 | 2021-12-20 | Invisible tooth socket visual positioning and polishing system |
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| CN114224531A true CN114224531A (en) | 2022-03-25 |
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| CN202111563712.0A Withdrawn CN114224531A (en) | 2021-12-20 | 2021-12-20 | Invisible tooth socket visual positioning and polishing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383632A (en) * | 2022-08-13 | 2022-11-25 | 北京缔佳医疗器械有限公司 | Thermal polishing device suitable for invisible appliance |
-
2021
- 2021-12-20 CN CN202111563712.0A patent/CN114224531A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383632A (en) * | 2022-08-13 | 2022-11-25 | 北京缔佳医疗器械有限公司 | Thermal polishing device suitable for invisible appliance |
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Application publication date: 20220325 |