KR101675819B1 - Thin plate outer periphery machining device - Google Patents

Thin plate outer periphery machining device Download PDF

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Publication number
KR101675819B1
KR101675819B1 KR1020150094570A KR20150094570A KR101675819B1 KR 101675819 B1 KR101675819 B1 KR 101675819B1 KR 1020150094570 A KR1020150094570 A KR 1020150094570A KR 20150094570 A KR20150094570 A KR 20150094570A KR 101675819 B1 KR101675819 B1 KR 101675819B1
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KR
South Korea
Prior art keywords
workpiece
machining
axis direction
thin plate
spindle
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Application number
KR1020150094570A
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Korean (ko)
Inventor
송길용
임고운
Original Assignee
스카이다이아몬드 주식회사
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Priority to KR1020150094570A priority Critical patent/KR101675819B1/en
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Publication of KR101675819B1 publication Critical patent/KR101675819B1/en

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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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • 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
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass

Abstract

The present invention relates to an apparatus for efficiently machining an outer circumferential portion of a hard thin plate, and more particularly, to an apparatus for efficiently machining an outer circumferential portion of a hard thin plate, in which the machining wheel is continuously brought into close contact with a hard thin plate, The machining wheel is moved in the X-axis direction naturally by the rotation of the workpiece, the machining error can be minimized by limiting the moving range of the machining wheel by the standard workpiece, while the shape of the standard workpiece is changed A manufacturing method of a hard thin plate peripheral part processing apparatus capable of mass production by repeated production and capable of reducing production cost and obtaining a product with high precision is disclosed.
Further, the present invention provides a work machine including a work table controlled in the Y axis direction, a fixed jig coupled to an upper portion of the work table and controlled in the Y axis direction, rotated by the jig rotation axis, And a machining member which is provided on the other side of the transferring member and which is controlled in the XZ-axis direction and which is mounted on the spindle and the spindle to machine the workpiece, wherein the hard thin- The outer peripheral portion of the workpiece is machined by rotating the workpiece in the same direction while rotating the workpiece.

Description

[0001] The present invention relates to a thin plate outer periphery machining device,

The present invention relates to an apparatus for efficiently machining an outer circumferential portion of a hard thin plate, and more particularly, to an apparatus for efficiently machining an outer circumferential portion of a hard thin plate, in which the machining wheel is continuously brought into close contact with a hard thin plate, The machining wheel is moved in the X-axis direction naturally by the rotation of the workpiece, the machining error can be minimized by limiting the moving range of the machining wheel by the standard workpiece, while the shape of the standard workpiece is changed And is capable of mass production by repetitive production, thereby reducing production cost, and is a technical field of a manufacturing apparatus for a hard thin plate outer peripheral part which can obtain a product with high precision.

Generally, as a tool for working a hard thin plate, a cutting tool used for cutting a high hardness material such as a ceramic such as silicon, alumina or silicon carbide (SiC) is used, and the cutting tool is required to have abrasion resistance, toughness and hardness Mechanical properties are required. A tool with a principle consisting of a bond that uses hard diamond, CBN (Cubic Boron Nitride: boron nitride compound), alumina powder, etc. as abrasive grain and fixes the abrasive grains to the body with appropriate force Is used.

Among the tools, the type of the diamond abrasive tool is divided into a resin tool, a non-tree tool, a metal tool, and an electrodeposition tool, depending on the constituents of the binder (bond) supporting the abrasive grains.

Electrodeposited tools among the above diamond abrasive tools have a higher bond hardness than metal tools, so that they have a longer life than metal tools and can be precisely processed even in complicated shapes. However, there is a disadvantage in that diamond abrasive wear is quickly worn out and removed, short life span and short tool replacement cycle.

Electrodeposited tools are also affected by the machining environment. The machining conditions are finely divided by feed rate, feed rate, workpiece or tool RPM, type of cutting water, flow rate of coolant, physical properties of workpieces, surface roughness of workpieces, Affect it.

Especially, sapphire cover glass which is resistant to scratches has a strong hardness, but it has a characteristic of being broken by a long crack when reaching a critical stress due to the directionality of the material. Therefore, a process of lowering the breakage rate of sapphire by heat treatment is selected. The hardness of the heat-treated sapphire is stronger than 2000 Hv. Since the surface and the edge of the sapphire cover glass become the appearance of the final product, fine control of the shape and aesthetics of the roughness are essential.

In recent years, sapphire cover glasses have been widely applied to smart watches and smart devices. However, as mentioned above, sapphire wafers are difficult to process with high hardness, which is characteristic of the properties of sapphire wafers. Due to the narrow area, there is a phenomenon in which the cover glass fixed by vacuum is pushed during the edge processing, and when the numerical control (NC) method of the tool is machined, the loading time is long in the sapphire centering, do.

In connection with the above, the sapphire material is superior to the conventional glass cover glass in terms of light efficiency characteristics and is resistant to scratches and cracking due to the characteristics of the wearable device, and thus is adopted as a substitute for the conventional tempered glass. Coverglass chemically reinforced with ordinary soda glass has poor mechanical strength and low resistance to scratching and has a problem in strength. The sapphire crystal glass used in analog watches can be an alternative to improve this point of view. However, due to the poor processability of the sapphire material, the lifetime of the tool is low and the replacement of the tool is frequent.

In addition, as sapphire markets expand into the cover glass market, the technology of diamond edge wheels is becoming an important factor. In sapphire wafers for existing LEDs, edge shape control is not an important process. Like the sillicon wafer of semiconductor process, 4 "sapphire Since the wafer edge process is the area for the carrier until the LED pattern is placed on the central part and scribed, it maintains a flexible curved shape that does not damage the patterned product when the wafer is moved. Cutting process.

However, in the case of the cover glass application, the edge processing soon becomes a factor for determining the finish of the actual product, so that the surface shape, roughness and dimensional control are required precisely.

Korea Patent Publication No. 2008-0101261

In order to realize the above-mentioned object, the present invention has a problem that the time required for centering of the outer periphery of the sapphire cover glass in the hard thin plate is increased, the centering defect is increased, the cost is raised, As a solution to this problem, there is a need to provide a machining apparatus suitable for a self-weighting type machining method in which a weight is applied to a workpiece by a self-weighting method on a cutting portion, that is, It is aimed at.

The present invention relates to a work table which is controlled in the Y-axis direction and which is coupled to an upper portion of the work table and is controlled in the Y-axis direction, rotated by a jig rotary shaft, And a machining member which is provided on one side of the jig and the work table and is provided with a carrying member controlled in the XZ axis direction and a machining wheel mounted on the spindle and the spindle and machining the workpiece, And the outer peripheral portion of the workpiece is machined by rotating the workpiece wheel in the same direction while rotating the workpiece.

The fixing jig of the present invention further includes a first fixing jig for fixing a workpiece on an upper portion thereof and a second fixing jig provided below the first fixing jig for fixing a standard workpiece, And the upper and lower support plates protruded from the other side of the conveyance body, wherein the processing member has one side connected to the upper and lower support plates of the transfer member, And a limit frame provided at a lower portion of the other side of the lower plate and contacting the standard workpiece when the workpiece is machined.

As described above, according to the present invention, it is possible to increase the centering and position adjustment range using standard workpieces and self-weighting without setting the control range of the moving range, and to apply a constant load to the workpiece, It is possible to reduce unnecessary defects by combining the two types of tools, and it is possible to reduce the number of parts to be machined, So that it is possible to obtain a product with high effect and high precision that can increase the service life of the tool.

1 is a front view according to a preferred embodiment of the present invention;
2 is a side view according to a preferred embodiment of the present invention;
3 is a plan view of a preferred embodiment of the present invention.
4 is an enlarged view of a portion "A"

The present invention relates to an apparatus for efficiently processing the outer circumferential portion of a sapphire cover glass in a thin thin plate, and more particularly, to a sapphire cover glass having a problem in that production cost is reduced due to frequent replacement of tools due to the nature of a sapphire cover glass, The present invention relates to a machining apparatus for machining an outer circumferential portion of a hard thin plate for solving the problem that the time required for centering a machining wheel is long and a mass production time is long.

In order to solve the above-described problems, the present invention provides a method of controlling a work machine, including a work table (10) controlled in the Y axis direction, a work table (10) coupled thereto and controlled in the Y axis direction, A fixing jig 20 to which a workpiece 100 is fixed at an upper portion thereof, a transferring member 30 spaced from one side of the work table 10 and controlled in the XZ axis direction, And a machining member (40) mounted on the spindle (43) and having a machining wheel (44) mounted on the spindle (43) for machining the workpiece (100), wherein the hard thin plate outer peripheral machining device The outer peripheral portion of the workpiece 100 is machined by rotating the workpiece 100 while rotating the machining wheel 44 in the same direction.

The fixing jig 20 of the present invention includes a first fixing jig 21 for fixing a workpiece 100 on an upper portion thereof and a second fixing jig 21 which is provided below the first fixing jig 21 for fixing the standard workpiece 110 And a second fixing jig 22. The conveying member 30 includes a conveying main body 31 controlled in the X-axis direction and a conveying member 30 protruding from the other side of the conveying main body 31, And the lower supporting plates 32 and 33. The processing member 40 is connected to the upper and lower support plates 32 and 33 of the conveying member 30, A spindle 43 fixed to the other side of the upper and lower plates 41 and 42 and a processing wheel 44 installed at the shaft end of the spindle 43; And a limit frame 45 provided at a lower portion of the other side of the lower plate 42 and contacting the standard workpiece 110 when the workpiece 100 is machined.

The lower plate 42 of the processing member 40 of the present invention includes a connection frame protruded on one side, a pulley bearing 46 installed to be rotatable on the end of the connection frame, A connecting member connected to one side and extending downwardly through the pulley bearing (46); And the weight member 47 provided at an end of the connecting member 40. The working member 40 is rotated about the center axis 36 in the X axis direction by the weight of the weight 47, .

The machining wheel 44 of the present invention is constituted of an electrodeposited wheel 44a and a metal machining wheel 44b. The electrodeposited wheel 44a is an electrodeposited diamond wheel, the metal machining wheel 44b is a metal Diamond wheels are used.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 4 showing embodiments of the present invention.

The control unit 50 and the cooling unit 60 are connected to the body frame 200 to control the entire work related to the processing of the workpiece 100 and to control the cooling water from the cooling unit 60 The workpiece 100 is cooled. At this time, as the NC controller, the control unit 50 controls the feeding member 30, the processing member 40, the work table 10, the fixing jig 20 and the cooling device 60 to be described later in detail Will be apparent to those skilled in the art.

Next, the work table 10 of the present invention

(Not shown) fixed to the upper portion of the main body frame 200 and a rail (not shown) formed on the upper portion of the fixed table, as shown in FIG. 1, (Not shown) which is movable in the Y-axis direction, and the fixing jig 20, which will be described later in detail along a plurality of rails (not shown) formed on the upper portion of the transfer table, .

Next, the fixing jig 20 of the present invention

A workpiece 100 is fixed on an upper part of the work table 10 and is controlled in the Y axis direction and rotated by a jig rotary shaft 23 And the fixed workpiece 100 is rotated as the fixing jig 20 is rotated by the jig rotary shaft 23 formed in a downward direction from the center of the fixing jig 20 do.

The fixing jig 20 according to the present invention includes a first fixing jig 21 for fixing the workpiece 100 on an upper portion thereof and a second fixing jig 21 provided below the first fixing jig 21 for fixing the standard workpiece 110, As shown in Figs. 1 and 4, a support frame (not shown) provided on the transfer table of the work table 10 and moved in the Y-axis direction is provided with a fixed jig 22, A second fixing jig 22 and a second fixing jig 22 mounted on the upper portion of the supporting frame and fixed to the standard work 110 and rotated together with the second fixing jig 22, The standard workpiece 110 is fixed by the second fixing jig 22 while the workpiece 100 is fixed to the workpiece 100 by using a vacuum chuck And is fixed by the first fixing jig (21).

At this time, the rotation of the fixing jig 20 is performed by driving the jig rotating shaft 23 to extend below the work table 10 to drive a motor (not shown) provided below the horizontal frame 210 of the main body frame 200 And it is obvious that the operation of the motor is controlled by the control part 50. [

Next, the conveying member 30 of the present invention

A conveying body 31 installed on the other side of the vertical frame 220 of the main body frame 200 and controlled in the XZ axis direction, And upper and lower support plates 32 and 33 protruding from the other side surface of the transport body 31.

1 to 3, the conveying body 31 of the conveying member 30 is provided on the other side of the vertical frame 220 of the main body frame 200, And a second conveying body (not shown) provided in the other direction of the first conveying body and moved in the Z-axis direction. The upper and lower support plates 32 are provided on the other side of the second conveying body. The processing member 40 is provided so as to protrude in the other direction so that the processing member 40 to be described later is installed on the upper and lower support plates 32 and 33 and then moves the processing member 40 in the XZ axis direction.

As shown in FIGS. 1 to 3, the upper and lower support plates 32 and 33 are provided with stoppers 34 and 35 at one side of the upper surface, respectively, so that the processing member 40 is rotated in X Thereby achieving the effect of having the maximum and minimum ranges of movement in the axial direction. At this time, the upper and lower support plates 32 and 33 each have a center hole (not shown) at the center thereof, and the center shaft 36 is used to rotate the processing member 40 in the Y- And is engaged with the processing member 40.

Next, the processing member (40) of the present invention

And a machining wheel 44 mounted on the other side of the transferring member 30 and mounted on the spindle 43 and the spindle 43 to machine the workpiece 100. Specifically, Upper and lower plates 41 and 42 connected to the upper and lower support plates 32 and 33 and a spindle 43 fixed to the other side of the upper and lower plates 41 and 42, And a limit frame 45 provided at a lower portion of the other side of the lower plate 42 and contacting the standard workpiece 110 when the workpiece 100 is machined .

The upper and lower plates 41 and 42 are formed so that a rotation hole (not shown) formed on one side of the upper and lower plates 41 and 42 is provided in the center hole of the upper and lower support plates 32 and 33 of the transfer member 30, The upper and lower plates 41 and 42 are rotated using the shaft 36 and the rotation range of the upper and lower plates 41 and 42 is changed to the upper and lower support plates 32, (35) provided on one side of the upper surface of the workpiece (33) so that they can be brought into contact with each other naturally by their own weight when the workpiece (100) is brought into contact with the workpiece .

The lower plate 42 of the processing member 40 of the present invention includes a connecting frame (not shown) protruded on one side, a pulley bearing 46 and a lower plate 42, A connecting member (not shown) connected to one side of the connecting member and extending downward through the pulley bearing 46, and a weight 47 provided at the end of the connecting member. In this case, Wire or the like is used, and the lower plate 42 is moved in the X-axis direction, that is, rotated by the weight of the weight 47.

More specifically, the processing member 40 of the present invention is rotated in the X-axis direction by the weight of the weight 47 around the center axis 36, When the plate 42 is rotated in the X-axis direction, the entire machining member 40 is rotated in the X-axis direction so that the machining wheel 44 can naturally contact the workpiece 100, The centering is not required to be set in the workpiece 100 so that the workpiece 100 can be easily machined.

In other words, the machining member 40 of the present invention is centered by the weight of the weight 47 because the machining wheel 44 can naturally apply a constant load to the workpiece 100 continuously, It is possible to reduce the occurrence of chips in the workpiece 100 and also to prevent the occurrence of unnecessary defects by rotating the workpiece 100 in the opposite direction in a portion where the workpiece 100 is not infeed, And to realize the effect that can be achieved.

The spindle 43 is fixed to a coupling hole (not shown) formed on the other side of the upper and lower plates 41 and 42 and a machining wheel 44 is installed at the shaft end of the spindle 43, (43) rotates the machining wheel (44).

4, the machining wheel 44 is composed of two electrodeposited machining wheels 44a and a metal machining wheel 44b. The engagement position can be changed according to the judgment of a person skilled in the art, The metal diamond wheel is used so that rough machining can be performed on the metal machining wheel 44a and the metal machining wheel 44b can be shaped to improve surface roughness.

At this time, the reason why two machining wheels 44 are formed is that when processing a hard thin plate, that is, a sapphire cover glass, it is chemically strengthened in general soda glass due to its characteristics, so that its mechanical strength is weak and resistance to scratching is low, There is a problem in that it is difficult to process. In addition, in order to process a sapphire coverglass having high strength, the life of the tool is rapidly lowered and frequent tool replacement must be performed, which causes cost increase.

In other words, the electrodeposited processing wheel 44a, that is, the electrodeposited diamond wheel, has a long shape and has a wide range of abrasive grains, and the metal machining wheel 44b, that is, the metal diamond wheel, Since the collapse is very severe, roughing and shaping can be performed simultaneously by adjusting the height by installing two wheels. In this case, the height of the processing wheel 44 can be adjusted by adjusting the height of the transferring member 30, but since the limit frame 45, which will be described in detail hereinafter, moves simultaneously, It is preferable to control the controller 50 so as to adjust the height.

In other words, by performing the roughing process using the electrodeposited processing wheel 44a and the shape processing of improving the surface roughness by using the metal processing wheel 44b, the finished product can be produced in a single step, and the tool life is increased Thereby realizing the effect of reducing the cost.

1 and 4, the limit frame 45 is provided at the lower side of the lower plate 42, and the end portion of the limit frame 45 is connected to the standard workpiece 110 when the workpiece 100 is machined. It is possible to realize effects of repetitive and mass production with contact with the machining limit range, and even if the shape is changed, the application is easy and quick, and the precision is increased, thereby realizing the effect of further reducing the cost.

That is, the hard thin plate peripheral portion machining apparatus of the present invention is characterized in that the outer peripheral portion of the workpiece 100 is machined by slowly rotating the workpiece 100 while rotating the machining wheel 44 in the same direction, 44) can be continuously applied with a constant load by using the self-weight method, and it is possible to produce repeatedly using two machining wheels (44) and a standard workpiece (110) And at the same time, the cost can be reduced to prevent the cost increase.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

100: Workpiece
110: Standard workpiece
200: main frame
210: horizontal frame 220: vertical frame
10: Work table
20: Fixing jig
21: first fixing jig 22: second fixing jig
23: jig rotating shaft
30:
31: transfer body 32: upper support plate
33: lower support plate 34, 35: stopper
36: Center axis
40:
41: upper plate 42: lower plate
43: spindle 44: machining wheel
44a: Electrodeposited machining wheel 44b: Metal machining wheel
45: limit frame 46: pulley bearing
47: Weights
50: control unit 60: cooling device

Claims (6)

A work table 10 controlled in the Y axis direction;
A fixing jig 20 coupled to an upper portion of the work table 10 to be controlled in the Y axis direction and rotated by the jig rotary shaft 23 and having a workpiece 100 fixed thereon;
A transfer member 30 spaced apart from one side of the work table 10 and controlled in the X-axis direction;
And a machining member 40 provided on the other side of the transfer member 30 and having a spindle 43 and a machining wheel 44 mounted on the spindle 43 for machining the workpiece 100,
The conveying member 30
A conveying main body 31 controlled in the XZ axis direction;
Upper and lower support plates 32 and 33 protruding from the other side of the conveying body 31;
The stopper 34 (35) provided at one side of the upper surface of the upper and lower support plates 32 (33) so as to have the maximum and minimum ranges of the movement of the processing member 40 in the X- );
And an outer circumferential surface of the thin thin plate outer circumferential portion.
The method according to claim 1,
The hard thin plate peripheral portion processing apparatus
Wherein the outer peripheral portion of the workpiece (100) is machined by rotating the workpiece (100) while rotating the machining wheel (44) in the same direction.
The method according to claim 1,
The fixing jig (20)
A first fixing jig 21 for fixing the workpiece 100 on the upper portion thereof,
And a second fixing jig (22) provided below the first fixing jig (21) and fixing the standard workpiece (110).
The method according to claim 1,
The processing member (40)
Upper and lower plates 41 and 42, one side of which is connected to the upper and lower support plates 32 and 33 of the conveying member 30,
A spindle 43 fixed to the other side of the upper and lower plates 41 and 42,
A machining wheel 44 installed at the shaft end of the spindle 43; And
And a limit frame (45) provided at a lower portion of the other side of the lower plate (42) and contacting the standard workpiece (110) when the workpiece (100) is machined. 5. The method of claim 4,
The lower plate (42) of the processing member (40)
A connecting frame protruding from one side;
A pulley bearing (46) rotatably installed at an end of the connecting frame
A connecting member connected to one side of the lower plate 42 and extending downwardly through the pulley bearing 46; And
And a weight (47) provided at an end of the connecting member.
6. The method of claim 5,
The processing member (40)
Centered about the center axis 36
And is rotated in the X-axis direction by the weight of the weight (47).
KR1020150094570A 2015-07-02 2015-07-02 Thin plate outer periphery machining device KR101675819B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000233351A (en) * 1999-02-10 2000-08-29 Shirai Tekkosho:Kk Plate glass polishing device
JP2007223010A (en) * 2006-02-24 2007-09-06 Hightech Eng Kk Chamfering device of curved surface glass
KR20080101261A (en) 2007-05-16 2008-11-21 (주)조방 The glass processing apparatus
KR100990444B1 (en) * 2010-02-12 2010-10-29 주식회사 태백지디에스 Thin class polishing device for display window, and polishing process system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000233351A (en) * 1999-02-10 2000-08-29 Shirai Tekkosho:Kk Plate glass polishing device
JP2007223010A (en) * 2006-02-24 2007-09-06 Hightech Eng Kk Chamfering device of curved surface glass
KR20080101261A (en) 2007-05-16 2008-11-21 (주)조방 The glass processing apparatus
KR100990444B1 (en) * 2010-02-12 2010-10-29 주식회사 태백지디에스 Thin class polishing device for display window, and polishing process system

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