KR101666612B1 - Method of detecting position of medical and dental prosthetics processing material - Google Patents

Method of detecting position of medical and dental prosthetics processing material Download PDF

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Publication number
KR101666612B1
KR101666612B1 KR1020150049455A KR20150049455A KR101666612B1 KR 101666612 B1 KR101666612 B1 KR 101666612B1 KR 1020150049455 A KR1020150049455 A KR 1020150049455A KR 20150049455 A KR20150049455 A KR 20150049455A KR 101666612 B1 KR101666612 B1 KR 101666612B1
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South Korea
Prior art keywords
base material
sensor
signal
workpiece
processing
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KR1020150049455A
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Korean (ko)
Inventor
문정본
심운섭
임한석
박명수
김상운
우상용
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주식회사 디디에스
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/10—Fastening of artificial teeth to denture palates or the like
    • A61C13/1003—Fastening of artificial teeth to denture palates or the like by embedding in base material
    • A61C13/1013—Arch forms
    • A61C13/1016—Methods or apparatus for mounting, holding or positioning a set of teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A method for detecting the position of a medical and dental prosthesis material according to the present invention is a method for detecting a position of a medical and dental prosthesis material by a workpiece having a base material joined to one end thereof and a pair of processing devices formed on both sides of the workpiece, A method for detecting the position of a base material by contacting a pair of processing apparatuses with the base material, the method comprising the steps of: (S100) initializing the sensor with a sensor embedded in the workpiece; Contacting the pair of processing apparatuses with a workpiece (S200); (S300) of detecting a signal when a pair of processing devices make contact with a workpiece, and the workpiece includes a sensor control device for processing a signal from the sensor .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of detecting the position of a medical and dental prosthetic material,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of detecting the position of a medical and dental prosthesis material, and more particularly, to a method and apparatus for precisely measuring the size and position of a base material, And a position detecting method of the material.

A workpiece is a device used to provide power for movement and rotation to a base material so that the base material can be machined using a tool for machining formed at the center of the machining apparatus. In addition, the medical and dental prosthesis processing apparatus is a device for manufacturing a prosthesis by processing or manufacturing a medical material or processing a base material according to information of a three-dimensional sample tooth to replace a missing tooth.

Recently, as the demand level of the aesthetic function has increased as well as the artificial tooth function of the artificial teeth, a research on the method of detecting the position of the medical and dental prosthesis processing device and the processing material of the medical and dental prosthesis, .

As a part of this research, Korean Patent Laid-Open No. 10-2010-0003646 discloses a spindle comprising a first spindle and a second spindle, each of which has a roughing tool and a finishing tool rotating around a rotation axis; A base material fixing unit for fixing a base material for forming a dental prosthesis; And a base for fixing the first spindle and the second spindle to the base material fixing portion, wherein the first spindle and the second spindle face each other on the same axis (first axis), and the base material fixing portion is fixed Wherein the base material is located on a second axis intersecting the first axis so that the base material can be positioned between the spindles and a third axis perpendicular to the first axis and the second axis, Wherein the roughing tool and the finishing tool are alternately machined in accordance with the required accuracy in machining the base material fixed to the stationary body. However, the dental prosthesis processing machine of Korean Patent Laid-Open No. 10-2010-0003646 has an advantage in that the base material can be processed while the two tools having different machining precision are simply alternated during the base material processing, but the position and size of the base material There is a problem in that it is not possible to accurately measure the failure state of the tool for machining when the state of the tool is bad or broken during the machining of the base metal.

Korean Patent Laid-Open Publication No. 10-2012-0051819 discloses a tooth replacement apparatus comprising: a specimen tooth fixing section on which a specimen tooth is installed; A workpiece fixing part on which a workpiece to be processed is installed; A measuring unit for sensing a back and forth movement, a left and right movement, and a top and bottom motion position information of a measurer moving along an outer shape of the sample tooth; A control unit for obtaining the sensed position information and generating a position control signal in accordance with a preset ratio based on the acquired position information, and a control unit for processing the workpiece installed on the work fixing unit based on the position control signal of the control unit And a machining portion for machining the tooth. However, the artificial tooth processing apparatus of Korean Patent Laid-Open No. 10-2012-0051819 has an advantage of being able to check the lag time according to the moving speed of the processing part in real time, but each sensor for sensing the displacement of the X, Y and Z axes, It is difficult to control a large number of sensors, and it takes a long time to measure the position and size of the base material, and when the state of the tool is bad or damaged during the base material processing There is a problem that the failure state of the tool for processing can not be detected.

Also, U.S. Patent No. 7,497,817 B2 describes an assembly in which the base material is movable along a first axis and a second axis, the second axis is perpendicular to the first axis, the first axis and the second axis being defined as planar; A pair of spindles located on opposite sides of the plane, each spindle being movable in a third axis perpendicular to the first axis and the second axis; And a tool changer having at least one tool for each spindle, wherein the tool changer moves into the assembly such that, while one spindle is simultaneously disposed on the spindle along the third axis, And the tool can be removed from the tool replacement part by moving along the axis and the second axis. However, the tool replacement unit of US 7,497, 817 B2 has an advantage in that the position of the tool can be detected by attaching a camera or a sensor, but there is a problem in that it is not possible to precisely measure the position and size of the base material to be machined.

In order to solve the problems of the prior arts, the present inventors have been able to measure the precise position and size of the base material, measure the position and size of the base material without damaging the base material and the tool during the measurement of the base material, A method of detecting a position of a medical and dental prosthesis material to be processed which can detect a failure state of a tool for processing when the state of the tool is poor or broken.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for detecting the position of a medical and dental prosthesis material that can measure precise position and size of a base material.

Another object of the present invention is to provide a method for detecting the position of a base material and the position and size of a base material without damaging the base material and the tool during the measurement of the base material.

It is still another object of the present invention to provide a method for detecting the position of a medical and dental prosthesis material that can detect a failure state of a tool for machining when the state of the tool for machining is inadequate or damaged during machining.

These and other objects of the present invention can be achieved by the present invention described below.

A method for detecting the position of a medical and dental prosthesis material according to the present invention includes a workpiece having a base material joined to one end thereof and a pair of processing devices formed on both sides of the workpiece, A method for detecting the position of a base material by contacting a pair of processing apparatuses with the base material, the method comprising the steps of: (S100) initializing the sensor with a built-in sensor in the workpiece; Contacting the pair of processing apparatuses with a workpiece (S200); (S300) of detecting a signal when a pair of processing devices make contact with a workpiece, and the workpiece includes a sensor control device for processing a signal from the sensor .

Here, the sensor control device includes a noise filter for removing an interference signal due to noise other than the contact signal of the base material, and the method for detecting the position of the base material for artificial tooth further comprises the steps of: (S400) of detecting a vibration signal from which noise has been removed by performing a filtering process.

The sensor control apparatus further includes a storage unit, and the method further includes a step S500 of storing the noise-removed signal as a unique signal after the step S400 of detecting the position of the artificial tooth base material do.

And the noise filter is an FLT (exponential smoothing filter).

Wherein the signal is an acoustic signal or a vibration signal.

The present invention can measure the precise position and size of the base material, measure the position and size of the base material without damaging the base material and the working tool during the measurement of the base material, and when the state of the working tool is bad or damaged And a method of detecting the position of a medical and dental prosthesis material to be machined that can detect a failure state of the tool for machining.

FIG. 1 is a flowchart schematically showing a method of detecting the position of a medical and dental prosthetic material to be treated according to an embodiment of the present invention.
2 is a flowchart schematically illustrating a method of detecting the position of a medical and dental prosthesis material to be processed according to another embodiment of the present invention.
FIG. 3 is a perspective view schematically showing a medical and dental prosthesis processing apparatus having a workpiece with a built-in sensor. FIG.
Fig. 4 is an explanatory diagram schematically showing the use state of the workpiece. Fig.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for detecting a position of a medical and dental prosthesis material according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a flowchart schematically showing a method of detecting the position of a medical and dental prosthetic material to be treated according to an embodiment of the present invention.

As shown in FIG. 1, a method for detecting the position of a medical and dental prosthetic material processing material according to an embodiment of the present invention includes a workpiece having a base material coupled to one end thereof, and a pair of A method for detecting the position of a base material by contacting a pair of processing apparatuses with the base material in an artificial tooth processing apparatus including a processing apparatus, the method comprising: Step S100 of initializing the sensor; A step S200 of bringing the pair of processing apparatuses into contact with a workpiece; And the sensor comprises a step S300 of detecting a vibration signal when the pair of working devices comes into contact with the workpiece. In addition, the workpiece includes a sensor control device for processing signals from the sensor.

2 is a flowchart schematically illustrating a method of detecting the position of a medical and dental prosthesis material to be processed according to another embodiment of the present invention.

As shown in FIG. 2, in the method of detecting the position of a medical and dental prosthesis material according to another embodiment, the noise filtering process is performed on the detected vibration signal after step S300, In this case, the sensor control apparatus includes a noise filter for removing an interference signal due to noise other than the contact signal of the base material.

Further, in the case where the sensor control apparatus is further configured to include a storage unit, the method for detecting the position of the base material for artificial teeth further includes S500 of storing the noise-removed vibration signal as a natural vibration signal after step S400 can do. It is preferable that the noise filter is composed of an FLT (exponential smoothing filter).

The exponential smoothing filter is a digital filter using a software algorithm configured to weight a signal value within a few milliseconds and a signal value of the latest several tens of microseconds so that signal values within a few seconds do not affect the detection signal much Filter. The exponential smoothing filter can be used to predict the state change of the tool during the machining of the prosthesis, or to use the noise component effectively when measuring the position and size of the base material, by using the surface time, weight, It is advantageous in that it is possible to have a more reliable and precise measurement value.

The exponential smoothing filter can be developed and applied as a software filter algorithm to the sensor control device. In addition, the element values necessary for the operation of the exponential smoothing filter are applied to the sensor element according to the state of the apparatus being machined or the measurement state of the matrix, respectively, as optimal element values corresponding to the states. With this function of the exponential smoothing filter, it is possible to predict the damage state of the tool during processing of the prosthesis.

FIG. 3 is a perspective view schematically showing a medical and dental prosthesis manufacturing apparatus having a workpiece with a built-in sensor, and FIG. 4 is an explanatory view schematically showing a use state of the workpiece.

The method for detecting the position of the medical and dental prosthesis material according to the present invention can be embodied by a medical and dental prosthesis processing apparatus having a workpiece.

The medical and dental prosthesis manufacturing apparatus 10 includes a workpiece 100, a first machining apparatus 210, and a second machining apparatus 220. The workpiece 100 includes a first processing device 210 and a second processing device 220 disposed on a side surface of the workpiece 100, And contacts the workpiece 100 to detect the position of the artificial tooth base material. More specifically, the machining tool formed at one end of the first machining apparatus 210 and the second machining apparatus 220 comes into close contact with the workpiece 100 to finally make contact.

In addition, the workpiece body 120 is coupled to a clamp 110 having a built-in sensor, and is preferably formed in a hollow cylindrical shape. In addition, the workpiece body 120 includes a wire receiving portion 121 for supplying electric power to the sensor in the inner space, an electric wire for transmitting a signal from the sensor to the outside, And a rotating shaft 122 formed on an outer surface of the first servomotor 130 and transmitting power from the first servomotor 130 to the workpiece body 120.

The motor 130 provides power to the clamp 110 and the workpiece body 120 with the sensor built therein. Specifically, the power generated by the first servo motor 130 is transmitted to the workpiece body 120 And then transmitted to the rotary shaft 122 and then to the clamp 110 where the sensor is embedded to finally provide rotational force to the base material B for machining.

In addition, the workpiece 100 of the present invention may further comprise a sensor control device 140 for processing signals from the sensor 114. Specifically, the sensor control device 140 is constituted by an electronic circuit, and can convert an analog measurement signal into a digital signal, and use the converted digital signal value to determine a normal signal and a noise signal. The sensor control device 140 may further include a noise filter (not shown) for removing an interference signal due to noise other than the contact signal of the base material. The noise filter effectively eliminates noise interference signals to prevent measurement errors caused by external shocks and noise when measuring the position and size of the base material, and enables accurate and stable measurement of the position and size of the base material.

Further, when a signal exceeding the reference sound and vibration of the sensor 114 is sensed in the process of machining the base material, it can be recognized as a signal that the tool is contacted or a signal capable of detecting a failure state of the tool during machining can be processed have.

In this process, since the workpiece 100 has a built-in sensor, the sensor can detect a characteristic frequency at which the processing tool of the first processing device 210 and the second processing device 220 comes into contact with the base material B And the position of the base material (B) is detected based on the resonance phenomenon. This process makes it possible to prevent damage to the base material by using a method in which the working tool rotates and abuts against the base material, and damage to the thin diamond coating tool is prevented.

In the method of detecting the position of a medical and dental prosthesis material according to an embodiment of the present invention, a sensor built in the workpiece 100 is initialized (S100). Thereafter, the pair of processing apparatuses are brought into contact with the workpiece (step S200), and the sensor detects a signal when the pair of processing apparatuses make contact with the workpiece (step S300). The signal detected in this process is processed as a unique signal when there is no external noise, and the position of the base material for artificial teeth is detected therefrom.

However, if external noise is present, an additional process is performed after steps S100 to S300. More specifically, in step S400, it is possible to further perform step S400 of detecting a vibration signal from which noises have been removed by performing a noise filter process on the detected vibration signal after step S300. In this case, And a noise filter for removing interference signals due to other noise.

If the sensor control apparatus further includes a storage unit, the sensor control apparatus further performs step S500 of storing the noise-removed vibration signal as a natural vibration signal after step S400. Even when external noise is present due to the natural vibration signal, precise and accurate detection is possible by adjusting the signal period necessary for the position measurement of the artificial tooth base material.

The signal is preferably composed of an acoustic signal using an acoustic sensor or a vibration signal using a vibration sensor.

The method for detecting the position of the medical and dental prosthesis material according to the present invention detects the position of the artificial tooth base material by using a sensor built in the workpiece and a pair of processing devices contacting the workpiece. It is possible to measure the precise position and size of the base material with excellent contact sensitivity of the tool for machining and to detect the failure state of the tool for machining when the state of the tool for machining is bad or broken during machining.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents should also be considered to be within the scope of the present invention.

10: Medical and dental prosthesis processing apparatus 100: Workpiece
110: Clamp with built-in sensor 114: Sensor
120: work piece body part 121: wire receiving part
122: rotation shaft 130: motor
140: sensor control device 210: first processing device
220: second machining device

Claims (5)

A first machining apparatus and a second machining apparatus formed on both sides of the workpiece, a workpiece having a base material coupled thereto at one end, and an interference signal due to noise other than a contact signal of the base material for processing a signal from the sensor Wherein a position of a base material for artificial teeth for detecting the position of a base material by bringing a processing tool of the first processing device and the second processing device into contact with the base material in a processing device for an artificial tooth including a sensor control device having a noise filter In the detection method,
A step S100 of incorporating a sensor formed of an acoustic sensor or a vibration sensor provided adjacent to the base material coupling hole in the internal space of the clamp body of the workpiece;
A step (S200) of bringing the processing tools of the first processing device and the second processing device into contact with the base material;
The sensor detecting (S300) an acoustic or vibration signal occurring at the moment when the machining tool of the first machining device and the second machining device contact the base metal;
Performing a noise filter process on the sound or vibration signal detected by the sensor to detect a noise-free signal (S400); And
(S500) of storing the noise-removed signal as a unique signal,
Wherein the noise filter is formed of an FLT (exponential smoothing filter).
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KR1020150049455A 2015-04-08 2015-04-08 Method of detecting position of medical and dental prosthetics processing material KR101666612B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3243339B2 (en) * 1993-07-26 2002-01-07 豊田工機株式会社 Work pressing device
KR20070033951A (en) * 2004-10-14 2007-03-27 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 Method of controlling the material of rolling, forging or straightening line and its device
JP2008082702A (en) * 2006-09-25 2008-04-10 Yamaguchi Univ Processing state evaluation system
KR100979693B1 (en) * 2008-07-01 2010-09-02 주식회사바텍 Dental prosthesis manufacturing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3243339B2 (en) * 1993-07-26 2002-01-07 豊田工機株式会社 Work pressing device
KR20070033951A (en) * 2004-10-14 2007-03-27 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 Method of controlling the material of rolling, forging or straightening line and its device
JP2008082702A (en) * 2006-09-25 2008-04-10 Yamaguchi Univ Processing state evaluation system
KR100979693B1 (en) * 2008-07-01 2010-09-02 주식회사바텍 Dental prosthesis manufacturing machine

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