KR101766142B1 - cutting performance test system for burr of hand-piece and method thereof - Google Patents

Abstract

According to the present invention, a cutting performance evaluation system of a handpiece burr unit includes: a loading plate having a sample mounted on the upper surface; a support which has an end selectively coupled to a handpiece unit and moves the handpiece unit to the sample; a load cell which is formed on the load plate and measures the pressure of the end of the handpiece unit against the sample; a vision camera recording and storing the surface shape of the sample; and a storage medium receiving and storing individual recorded data from the load cell and the vision camera. The cutting performance evaluation system of a handpiece burr unit provides the cutting performance of the handpiece burr unit as numerical result values to enable a quantitative quality evaluation of the handpiece burr unit as well as analyzing pressing force, the rotational speed, and the consumed flow rate of the hand piece burr unit through using multiple criteria to provide more reliable result values.

Description

[0001] The present invention relates to a cutting performance test system for burrs,

The present invention relates to a cutting performance evaluation system and method for evaluating a cutting performance of a handpiece, and more particularly, to a handpiece cutting performance evaluation system and an evaluation method for evaluating a cutting performance of a dental handpiece will be.

Generally, a dental handpiece is a device for removing or processing a tooth or a tooth model, and is used in procedures such as implant surgery, cavity removal and plug removal.

The dental handpiece includes a main body, an impeller rotatably coupled to the main body, a hand piece burr mounted on an end of the impeller, a motor for driving the impeller, a hose for discharging water and air, And a suction member for sucking dust.

Among them, the handpiece burr is made of a forged material mainly made of copper or iron and contacts with a tooth of a patient to cut the teeth while rotating at a high speed or a low speed, and a cutting piece such as diamond is electrodeposited on the end. At this time, when the cutting piece is electrodeposited at the tip of the handpiece burr or the self-durability can not be sufficiently secured, there occurs a problem that the cutting performance of the handpiece is greatly deteriorated.

However, at present, the discrimination of the hand piece is dependent only on the sense of the dental staff, and quantitative criteria for guaranteeing the quality of the hand piece are not provided.

Therefore, there is a demand for a technique capable of evaluating the quality such as electrodeposition property or durability of the burr to confirm the cutting performance of the handpiece, and Japanese Laid-Open Patent Publication No. 10-1998-0708719 discloses a related art. Here, the tip of the machine tool for performing the cutting process is photographed by the image pickup means, and the obtained image is subjected to different image processing to obtain the luminance value distribution data of the inspection region set at the end of the tip cutting edge, (Hereinafter referred to as "anomaly detection method") for detecting an abnormality of a tip by extracting only a luminance value of a defect portion of the inspection region, .

However, the above-described abnormality detection method is difficult to apply to a handpiece having a high rotation speed of 3.2 million rpm. Only the image of the taken machine tool tip is analyzed and the defect is detected, .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system and method for evaluating a cutting performance of a handpiece bar which is capable of evaluating the electrodepositability and durability of a handpiece burr, have.

According to an aspect of the present invention, a cutting performance evaluation system for a handpiece bar includes: a loading plate on which a specimen is seated; A supporting body for selectively moving the hand piece bur to the specimen side, the hand piece being coupled to the one end; A load cell formed on the loading plate for measuring a pressure at which the end of the hand piece bur presses the specimen; A vision camera for photographing and recording the surface shape of the specimen; And a storage medium for receiving and storing data recorded from the load cell and the vision camera, respectively.

Wherein the vision camera is disposed at a distance from a distal end side of the hand piece burr, and the cutting performance evaluation system of the hand piece burr is provided with a conveying system for conveying the loading plate from the distal end side of the handpiece to the imaging field of view of the vision camera Means may be included.

The transporting unit may include a transporting stage on which the transporting plate is mounted, a guide rail on which the transporting stage is slidingly engaged, and a transporting motor for forcibly sliding-driving the transporting stage on the guide rail.

Further, the support may include a bar-shaped driving member whose one end is engaged with the hand piece, a support member for rotatably supporting the driving member, and a rotation motor for rotating the other end of the driving member.

In addition, the driving member may be provided at one end thereof with a weight adjusting member to which a weight for pressing the combined hand piece bur is additionally fixed.

Further, the cutting performance evaluation system of the handpiece bar may further include a tilting stage coupled to the loading plate to adjust an angle of one surface of the loading plate.

In addition, the cutting performance evaluation system of the hand piece burr may further include a rotation detection sensor for recording the rotation number of the hand piece burr and storing the rotation number in the storage medium.

Further, the cutting performance evaluation system of the hand piece bar may further include a server unit for transmitting data stored in the storage medium to an external device.

In addition, the cutting performance evaluation system of the handpiece bar may further include a fluid supply unit for supplying water or air between the hand piece bur and the specimen while the hand piece bur contacts the specimen.

In addition, the cutting performance evaluation system of the handpiece bar may further include a flow rate measuring sensor for measuring and recording the flow rate of water or air supplied from the fluid supply unit.

Further, the cutting performance evaluation system of the hand piece burr drives the rotating piece motor so that the end of the hand piece burr contacts the specimen, and then drives the hand piece bur to cut the specimen. When the cutting of the specimen is completed The control unit may further include a controller for driving the feed motor to feed the stack plate into a field of view of the vision camera, and turning on the vision camera to photograph the transported specimen.

According to still another aspect of the present invention, there is provided a method of evaluating a cutting performance of a handpiece for a test piece, the method comprising the steps of fixing a hand piece to an end of the support, A preparation step of placing the sample against the sample; A driving step of moving the supporting body so that an end of the hand piece bur contacts a surface of the specimen and rotating the hand piece bur; An operation recording step of measuring and recording a pressure at which the end of the hand piece bur presses the test piece while the hand piece is being driven; A shape recording step of photographing and recording the surface shape of the specimen using the vision camera; And a storing step of storing the recorded data through the operation recording step and the shape recording step in a computer.

Here, the method of evaluating the cutting performance of the hand piece burr may further include, after the operation recording step, a transfer step of transferring the specimen to a space provided with the vision camera.

The preparing step may further include adjusting a slope of the one surface of the specimen.

The preparing step may further include mounting at least one weight to press the hand piece in a direction in which the specimen is disposed.

The driving step may further include supplying air or water between the end of the hand piece burr and the specimen.

The operation recording step may include recording the sensed pressure of the end of the hand piece burr against the specimen, sensing and recording the rotational speed (RPM) of the hand piece burr, And recording the amount of air or water supplied between the end of the test piece and the specimen.

Further, in the operation recording step, it is preferable that the end portion of the hand piece burr senses the pressure of pressing the specimen through the load cell disposed adjacent to the specimen.

According to the cutting performance evaluation system and evaluation method of the handpiece bar according to the present invention, the following effects can be obtained.

First, quantitative evaluation of the quality of the handpiece is possible by providing the numerical results of the cutting performance of the handpiece.

Second, by analyzing the pressing force, the rotational speed, and the consumed flow amount of the handpiece in various ways, a reliable result value with respect to the quality of the handpiece can be provided.

Third, as the series of analyzes are done automatically, the evaluation time can be saved and it is convenient to use.

1 is a perspective view of a cutting performance evaluation system of a handpiece bar according to an embodiment of the present invention,
Fig. 2 is a bottom view of the cutting performance evaluation system of the handpiece bar shown in Fig. 1. Fig.
3 is a side view of the cutting performance evaluation system of the handpiece bar shown in Fig.
4 is a block diagram showing a connection structure of a storage medium of a system for evaluating a cutting performance of a handpiece bar according to an embodiment of the present invention;
FIG. 5 is a block diagram showing a connection structure of a control unit of a cutting performance evaluation system of a handpiece bar according to an embodiment of the present invention. FIG.
6 is a flowchart for explaining a cutting performance evaluation method of a hand piece burr according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a cutting performance evaluation system 10 of a handpiece bar according to an embodiment of the present invention, FIG. 2 is a bottom view of a cutting performance evaluation system 10 of the handpiece bar shown in FIG. 1, 3 is a side view of the cutting performance evaluation system 10 of the hand piece burr shown in Fig. 1, and Fig. 4 is a side view of the cutting tool performance evaluation system 10 of the hand piece burr according to an embodiment of the present invention. And a block diagram showing a connection structure.

1 to 4, a system 10 for evaluating a cutting performance of a handpiece bar according to an embodiment of the present invention includes a dental handpiece burr B as a specimen S ), While evaluating the cutting performance. The evaluation system 10 includes a loading plate 100, a support 200, a load cell 300, a vision camera 400, and a storage medium 500.

The sample plate S is seated on the upper surface of the loading plate 100. At this time, the loading plate 100 may further include a holder for fixing the movement of the seated sample S.

Referring to FIG. 1, the support body 200 selectively engages with the handpiece bar B at one end. The support body 200 moves the hand piece burr B toward the specimen S when the evaluation system 10 is operated. To this end, the support 200 may include a driving member 210, a support member 220, and a rotation motor 230.

The driving member 210 is rod-shaped and one end thereof engages with the handpiece bar B. Here, the hand piece burr B is mounted on the driving member 210 such that the tip thereof faces the specimen S. Further, the driving member 210 may have a hollow tubular shape so that air or water may be moved into the driving member 210. At this time, as shown in FIG. 2, the driving member 210 may be formed with a bent portion 210a which is bent at a predetermined angle at one point. Referring to FIG. 3, the driving member 210 includes a weight adjusting unit 211 having a weight W fixed to an end of the driving member 210 coupled to the handpiece bur B, as shown in FIG. At this time, the weight W presses the hand piece B in the direction of the specimen S to replace the force that the user presses the hand piece while actually using the hand piece.

The supporting member 220 rotatably supports the driving member 210. Here, the support member 220 is rotatably coupled to the bending portion 210a of the driving member 210. [

The rotation motor 230 is coupled to the opposite side of the driving member 210 to which the handpiece bar B is coupled with respect to the bent portion 210a. More specifically, the rotary motor 230 may include a pressing piece 231 that is rotatably coupled to a rotary shaft (not shown) of the rotary motor 230, as shown in FIG. Here, the pressing piece 231 is coupled with the rotation shaft at one side, and the other side is raised or lowered as the rotation shaft rotates to selectively press the driving member 210. At this time, the driving member 210 rotates the other side to which the hand piece B is coupled, while the supporting member 220 serves as a lever.

The load cell 300 is formed on the loading plate to measure a pressure at which the tip of the hand piece burr B presses the specimen S. [ At this time, the load cell 300 measures and records the pressure applied to the specimen S from the hand piece burr B. At this time, the recorded data is transferred to the storage medium 500 to be described later.

The vision camera 400 photographs and records the surface shape of the specimen S after the cutting of the hand piece B is completed. At this time, it is preferable that the vision camera 400 is disposed so as to be spaced apart from the distal end side of the handpiece bar B in order to secure an imaging field of view. At this time, the vision camera 400 photographs and records the cut surface of the specimen S, and transmits it to the storage medium 500 to be described later.

The storage medium 500 receives and stores data recorded from the load cell 300 and the vision camera 400, respectively.

The evaluation system 10 according to the present invention may be arranged to be spaced apart from the handpiece bar B in order to secure a field of view of the vision camera 400 and to separate the specimen S from the handpiece bar B, So that the camera 400 can be transported so as to be misaligned. To this end, the evaluation system 10 may further include a conveying unit 600 for conveying the specimen S. Hereinafter, the configuration of the conveying unit 600 will be described with reference to FIG. 1 .

The conveying unit 600 conveys the stacking plate 100 on which the sample S is placed from the leading end side of the handpiece 10 into the field of view of the vision camera 400. To this end, the conveying means 600 may include a conveying stage 610, a guide rail 620, and a conveying motor 630.

The transfer stage (610) has a loading plate (100) on which the specimen (S) is loaded. At this time, the transfer stage 610 slides on the guide rail 620 and slides on the guide rail 620 to transfer the specimen S. Here, it is preferable that the transfer stage 610 is forcibly slid on the guide rail 620 by driving the transfer motor 630.

In addition, the evaluation system 10 according to the present invention may include a tilting stage 700 for adjusting the flatness of the specimen S. The tilting stage 700 is coupled to the loading plate 100 to adjust the angle of the surface of the loading plate 100 on which the sample S is placed. At this time, the tilting stage 700 may include upper and lower plates 710.720 and a plurality of adjusting screws 730.

Referring to FIG. 3, the upper and lower plates 710 and 720 are vertically spaced from each other and support the loading plate 100 from below. A plurality of adjusting screws 730 pass through the edges of the upper and lower plates 710 and 720 and the gap between the upper and lower plates 710 and 720 is adjusted by rotation of the adjusting screw 730 .

Referring to FIG. 4, the evaluation system 10 according to the present invention may include a rotation detection sensor 800 connected to the motor of the handpiece bar B. At this time, the rotation sensor 800 records the number of revolutions of the hand piece B and transfers it to the storage medium 500.

The evaluation system 10 according to the present invention may include a server unit 900. The data transmitted to the storage medium 500 may be collected through the server unit 900 and transmitted to the mobile terminal .

1 and 4, an evaluation system 10 according to the present invention is characterized in that the handpiece bar B is provided between the handpiece bar B and the specimen S while polishing the specimen S, And a fluid supply unit 1000 for supplying air or water to the fluid supply unit 1000. The fluid supply unit 1000 may be connected to a rear end of the driving member 210 to supply air or water to the hand piece burr B through the inner space of the driving member 210.

The evaluation system 10 according to the present invention may also include a flow rate measurement sensor 1100 for measuring and recording the flow rate of water or air used in the fluid supply unit 1000. At this time, the data recorded in the flow measurement sensor 1100 may be transmitted to the storage medium 500.

Also, the evaluation system 10 according to the present invention may include the controller 1200 to enable automatic driving. Hereinafter, the function of the control unit 1200 will be described with reference to FIG. 5 is a block diagram showing a connection structure of the controller 1200 of the evaluation system 10 according to an embodiment of the present invention.

5, the control unit 1200 is connected to a rotation motor 230, a bar drive motor M, a feed motor 630, and a vision camera 400. At this time, when the user places the sample S on the loading plate 100 and operates the evaluation system 10 after coupling the hand piece burr B to the support body 200, The drive motor 630 and the vision camera 400 are sequentially driven by the rotation motor 230, the bar drive motor M, the feed motor 630,

More specifically, the control unit 1200 drives the rotation motor 230 to rotate the driving member 210 so that the end of the hand piece B contacts the specimen B . The control unit 1200 drives a burr driving motor M for rotating the handpiece bar B in the handpiece so that the handpiece bar B cuts the specimen S. [ Meanwhile, the load cell 300 measures the pressure applied to the specimen S from the handpiece bar B. When the cutting of the specimen S is completed, the control unit 1200 drives the feed motor 630 to feed the specimen S so that the specimen S is disposed within the field of view of the vision camera 400. Subsequently, the control unit 1200 drives the vision camera 400 to photograph the surface shape of the specimen S. The evaluation system 10 according to the present invention can save evaluation time and is convenient to use as a series of analyzes are automatically performed by the controller 1200. [

Hereinafter, a method for evaluating the cutting performance of the hand piece burr according to the present invention will be described with reference to FIG. 6 is a flowchart for explaining a cutting performance evaluation method of a hand piece burr according to an embodiment of the present invention.

6, a method of evaluating a cutting performance of a handpiece bar according to the present invention (hereinafter referred to as "evaluation method") is a method of evaluating cutting performance of a handpiece bar according to the present invention, It is a method to evaluate performance. To this end, the evaluation method includes a preparing step S510, a driving step S520, an operation recording step S530, a shape recording step S550, and a storing step S560.

First, in the preparation step (S510), the hand piece burr (B) is fixed to the support body (200). Further, after placing the specimen S on the loading plate 100, the specimen S is fixed using the holder. The tilting stage 700 is used to adjust the flatness of the specimen. In addition, it is preferable to mount at least one weight W so as to press the hand piece B in the direction in which the specimen S is disposed in the preparing step S530. At this time, the weight W replaces the force that the user presses the hand piece B while the actual hand piece B is used.

Then, in the driving step S520, the support body 200 is moved so that the hand piece burr B contacts the surface of the specimen S, and the hand piece burr B is driven. At this time, the controller 1200 drives the rotation motor 230 and the bar drive motor M, respectively. The rotating motor 230 is driven to move the end of the driving member 210 to which the hand piece B is fixed to the specimen S side so that the driving force of the driving motor 210 And the burr B is rotated. In the driving step (S520), it is preferable to supply air or water between the end of the hand piece burr (B) and the specimen S through the fluid supply part (1000).

In the operation recording step S530, the pressure at which the end of the hand piece burr B presses the piece during the driving of the hand piece burr B is measured. Here, the pressure is measured by the load cell 300, and the measured pressure is recorded and transmitted to the storage medium 500. In the operation recording step S530, the rotation speed sensor 800 may sense and record the RPM of the hand piece B, In addition, in the operation recording step S540, it is preferable to record the amount of air or water supplied between the end of the hand piece B and the specimen S using the flow rate sensor 1100.

Here, the evaluation method according to the present invention may include a transfer step (S540) after the operation recording step (S530). In the transferring step S540, the transfer unit 600 transfers the specimen S within a visual field of view of the vision camera 400. [ At this time, the transporting motor 630 is driven by the controller 1200 so that the transporting stage 610 slides into the field of view of the vision camera 400.

In the formation and recording step S550, the surface shape of the specimen S is photographed using the vision camera 400. FIG. At this time, when the specimen S enters the field of view of the vision camera 400, the vision camera 400 automatically turns on the power by the controller 1200 and performs photography. At this time, the recorded data is transferred to the storage medium 500.

Finally, in the storage step (S560), the data transmitted while the operation recording step (S530) and the shape recording step (S550) are performed is stored in the storage medium (500).

The evaluation system 10 and the evaluation method according to the present invention as described above have the following effects.

First, quantitative evaluation of the quality of the handpiece is possible by providing the cutting performance of the hand piece burr (B) as a numerical result.

Secondly, by analyzing the pressing force, the rotational speed and the consumed flow rate of the hand piece burr B in various angles, it is possible to provide a reliable result value with respect to the quality of the hand piece burr B.

Third, as the series of analyzes are done automatically, the evaluation time can be saved and it is convenient to use.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

S: Piece B: Hand piece
M: Burr drive motor W: Weight
10: Evaluation system 100: Loading plate
200: support 210: driving member
210a: bent part 211:
220: support member 230: rotation motor
231: pressure piece 300: load cell
400: vision camera 500: storage medium
600: conveying means 610: conveying stage
620: Guide rail 630: Feed motor
700: tilting stage 710, 720: upper and lower plate
730: Adjustment screw 800: Rotation sensor
900: server unit 1000: fluid supply unit
1100: Flow measurement sensor 1200: Control unit

Claims (18)

A loading plate on which the specimen is seated on the upper surface;
A supporting body for selectively moving the hand piece bur to the specimen side, the hand piece being coupled to the one end;
A vision camera for photographing and recording the surface shape of the specimen; And
And a storage medium for receiving and storing the recorded data from the vision camera,
Wherein the support comprises:
A cutting performance evaluation system for a handpiece bar including a rod-shaped driving member, a supporting member for rotatably supporting the driving member, and a rotating motor for rotating the other end of the driving member, . The method according to claim 1,
Wherein the vision camera is disposed apart from a distal end side of the hand piece bar,
And a transfer means for transferring the loading plate from a distal end side of the handpiece to an imaging field of view of the vision camera. The method of claim 2,
The conveying means
A transfer stage on which the loading plate is seated,
A guide rail for slidingly coupling the transfer stage,
And a feed motor for forcibly sliding-driving the feed stage on the guide rails. The method according to claim 1,
And a load cell formed on the loading plate for measuring and recording the pressure at which the end of the hand piece bur presses the specimen,
Wherein the storage medium receives and stores data recorded from the load cell and the vision camera, respectively. The method of claim 1,
Wherein the driving member is provided at one end with a weight for weighting to press the combined handpiece bur. The method according to claim 1,
And a tilting stage coupled to the loading plate to adjust an angle of one surface of the loading plate. The method according to claim 1,
And a rotation detecting sensor for recording the rotation number of the hand piece burr and storing the rotation number of the hand piece burr in the storage medium. The method according to claim 1,
And a server unit for transmitting data stored in the storage medium to an external device. The method according to claim 1,
Further comprising a fluid supply part for supplying water or air between the hand piece bur and the specimen while the hand piece bur contacts the specimen. The method of claim 9,
And a flow rate measuring sensor for measuring and recording a flow rate of water or air supplied from the fluid supply unit. The method of claim 3,
After driving the rotary motor such that the end of the hand piece bur contacts the specimen, the hand piece bur is driven to cut the specimen, and when the cutting of the specimen is completed, the feed motor is driven to move the load plate And a control unit for transferring the vision camera to a shooting field of view of the vision camera and shooting the transferred specimen by turning on the vision camera. A method for evaluating a cutting performance of a handpiece burr for evaluating a cutting performance of a handpiece burr for a specimen,
A preparation step of fixing a handpiece bur to the end of the support and disposing the specimen toward the tip side of the handpiece;
A driving step of moving the supporting body so that an end of the hand piece bur contacts a surface of the specimen and rotating the hand piece bur;
An operation recording step of measuring and recording a pressure at which the end of the hand piece bur presses the test piece while the hand piece is being driven; And
And a storing step of storing the recorded data in the computer via the operation recording step,
In the preparation step,
And adjusting a slope of the one surface of the specimen. The method of claim 12,
Further comprising a shape recording step of photographing and recording the surface shape of the specimen using a vision camera after the operation recording step,
Wherein the storing step stores the recorded data through the operation recording step and the shape recording step in a computer. 14. The method of claim 13,
After the operation recording step,
And a transfer step of transferring the specimen to a space provided with the vision camera. The method of claim 12,
In the preparation step,
Further comprising the step of mounting at least one weight to press the hand piece bur in the direction in which the specimen is disposed. The method of claim 12,
Wherein the driving step further comprises supplying air or water between the end of the hand piece burr and the specimen. 18. The method of claim 16,
The operation recording step includes:
Sensing the pressure at which the end of the hand piece bur presses the specimen,
Detecting and recording the revolution speed (RPM) of the hand piece burr,
And recording the amount of air or water supplied between the end of the hand piece burr and the specimen. The method of claim 12,
Wherein in the operation recording step, a pressure of the end portion of the hand piece bur presses the specimen through a load cell disposed adjacent to the specimen is sensed.

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