CN101500755A - Grindstone - Google Patents
Grindstone Download PDFInfo
- Publication number
- CN101500755A CN101500755A CNA2007800289857A CN200780028985A CN101500755A CN 101500755 A CN101500755 A CN 101500755A CN A2007800289857 A CNA2007800289857 A CN A2007800289857A CN 200780028985 A CN200780028985 A CN 200780028985A CN 101500755 A CN101500755 A CN 101500755A
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- CN
- China
- Prior art keywords
- grindstone
- glass sheet
- resin
- impact absorbing
- absorbing layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
- B24D5/16—Bushings; Mountings
Abstract
To provide a grindstone that even in the event of chamfer machining of an edge portion of plate glass, ensures prevention of any defect or breakage thereof without productivity decrease, and provide a method of machining an end face of plate glass. The grindstone (10) comprises aluminum disk-shaped base metal (10a) provided at its center with hole portion (10a', with 120 mm outside diameter, 80 mm inside diameter and 40 mm thickness); ringlike shock absorption layer (10b, with 10 mm thickness) of, for example, phenolic resin, bonded to the outer circumferential surface of the disk-shaped base metal (10a); and ringlike abrasive grain layer (10c, with 5 mm thickness) bonded to the outer circumferential surface of the shock absorption layer (10b).
Description
Technical field
The present invention relates to a kind of grindstone that is suitable for grinding the plate object that constitutes by fragile materials such as glass, potteries, relate in particular to and a kind ofly be suitable for that ((display such as thickness 1.0～3.0mm) carries out the grindstone of chamfer machining with glass sheet with glass sheet for thickness 0.1～0.7mm) or plasma scope with glass sheet to LCD.
Background technology
In recent years, LCD extensive use in multiple uses such as television set, PC, mobile phone.In addition, plasma scope is used in big frame TV machine mostly.
The glass sheet that in displays such as LCD or plasma scope, uses, because when having internal flaw (bubble, sneak into foreign matter etc.) or External Defect (concavo-convex, hinder, adhere to foreign matter, pollution etc.) on its main face, can produce anamorphose or fuzzy, muddy, bad point etc., become and show the feint mortal wound that becomes, therefore from the manufacturing process to the finishing step, in order to keep high accuracy and accuracy, need under tight management, make.
In addition, display, dispatches from the factory after just will cutting into the size of regulation after glass manufacturers is shaped with glass sheet, but because this section is coarse face, thus easily in the back in the operation generation damaged or damaged, to implement chamfer machining in order to prevent this situation.
All the time, use in the chamfer machining of glass sheet at display, ordinary circumstance is to run into the end face of glass sheet with the grindstone butt by the rough lapping that will have the well width endless groove wideer slightly than the thickness of glass sheet, carry out rough lapping, then, to have the grindstone that the smooth grinding of the endless groove of same shape uses and conclude the end face of running into glass sheet, carry out smooth grinding thus.
Usually, as the rough lapping grindstone, use be the basic component that has discoid (donut-like) of hole portion at the center (
Disk shape platform gold) wheel (metal adhesive diamond wheel) that the diamond abrasive grain layer that installation is kept by metal adhesive on the outer circumference surface forms, in addition, as the smooth grinding grindstone, use be with the wheel (resinoid bond wheel) of fine grits such as based on silicon carbide such as polyurethane resin on the outer circumference surface of basic component.
Said method is the method for carrying out chamfer machining on the end face that endless groove on each grindstone is crimped on mobile glass sheet by being formed on, but with smooth grinding during with grindstone abrasive sheet glass, glass sheet is damaged or damaged sometimes.Its reason think because smooth grinding with the outer peripheral face of grindstone by making of the resin-bonded abrasive particle, specific strength is low mutually with grindstone with rough lapping, a little less than the abrasive power, therefore the load with respect to glass plate becomes greatly, impact being easy to apply on the glass plate.
In addition, owing to increase the translational speed of glass sheet more, or increase the rotary speed of smooth grinding more with grindstone, the impulsive force that then puts on glass sheet becomes big more, more is easy to generate the damaged or damaged of glass sheet, therefore, is difficult to realize the raising of productivity ratio.
Because such situation, all the time, the breach or the breakage (for example patent documentation 1) that produce when proposing to have the whole bag of tricks to prevent that the end of glass sheet carried out chamfer machining.
Patent documentation 1: 9-No. 235145 communiques of Japanese kokai publication hei
In patent documentation 1, disclose be covered in advance aqueous resin bed and it is solidified of a kind of end, utilized grinding stone to carry out the method for chamfer machining then at glass sheet.According to this method, at the surface applied coagulability resin of glass sheet end, with the end-beveling processing of this resin with glass sheet, thus shortcomings such as damaged can not appear by in advance.
But, in the method, need be in the operation of the aqueous resin of the whole coating in the surface of the end of wanting chamfer machining of glass sheet, and then after chamfer machining, also need the operation of removing with at the remaining resin in glass sheet surface, the therefore problem that exists production efficiency to descend significantly.
Summary of the invention
The object of the present invention is to provide a kind of production efficiency that can not make to descend,, also can prevent the damaged or damaged grindstone and the end-face processing method of glass sheet even chamfer machining is carried out in the end of glass sheet.
The inventor to achieve these goals, carry out various experiments repeatedly, found that, when chamfer machining being carried out in the end of glass sheet with grindstone, by using the grindstone that can make the impulsive force decline that puts on glass sheet, can suppress the damaged or damaged of glass sheet, thereby propose the present invention program.
That is, grindstone of the present invention is characterised in that to have following structure: the impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, is provided with abrasive grain layer on the surface of this impact absorbing layer.
In addition, grindstone of the present invention is characterised in that impact absorbing layer is formed by heat-curing resin.
In addition, grindstone of the present invention is characterised in that, heat-curing resin is to be selected from a kind of in the group that following resin forms, and described resin has: phenolic resins, silicone resin, Lauxite, melmac, mylar, polyurethane resin, epoxy resin, polyimide resin, polycarbonate resin.
In addition, grindstone of the present invention is characterised in that abrasive grain layer is that the bond of principal component constitutes by a plurality of abrasive particles with the heat-curing resin.
In addition, the end-face processing method of glass sheet of the present invention, be that end face by making glass sheet is along the relatively move end-face processing method of the glass sheet processed of grindstone, it is characterized in that, the structure that described grindstone has is: the impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, in the surface engagement of this impact absorbing layer abrasive grain layer is arranged.
In addition, the end-face processing method of glass sheet of the present invention is characterised in that the thickness of glass sheet is below 3.0mm.
In addition, the end-face processing method of glass sheet of the present invention is characterised in that the thickness of glass sheet is below 0.7mm.
The invention effect
Grindstone of the present invention is owing to accompany the impact absorbing layer that is made of elastomeric material between discoid basic component and abrasive grain layer, therefore, when machined object is contacted with grindstone, relax the impact that puts on machined object by the strain of utilizing impact absorbing layer.Therefore, using this grindstone that the end of glass sheet is carried out under the situation of chamfer machining, owing to can relax the impulsive force that puts on glass sheet from grindstone, so can carry out microfabrication, therefore can prevent damaged or damaged, the chamfer machining face of circular-arc (the chamfering shape) that can obtain not having inequality, is evenly ground.In addition, it is general when the load of the glass plate that puts on grindstone becomes big, it is bad that the end face of glass plate produces burning heat, promptly produce the phenomenon of glass surface softening transform owing to the frictional heat that causes because of grinding, but grindstone of the present invention is owing to little for the load of glass plate, so can prevent to burn hot bad.
In addition, grindstone of the present invention, even at a high speed rotation, the impulsive force that puts on glass sheet is also little, therefore can not produce damagedly or damaged, can shorten time of chamfer machining, can also realize increasing substantially of productivity ratio.
Grindstone of the present invention in addition owing to can carry out microfabrication to glass plate equably, therefore the foreign matters such as glass dust that stop up endless groove can be suppressed at minimum, so the dust that these foreign matters cause is few, can make the glass plate of clean surface.
In addition, according to the end-face processing method of glass sheet of the present invention, can the High-efficient Production N/D or the glass sheet of damaged cleaning.Therefore, be suitable for the display chamfer machining of glass sheet high, below 0.7mm, be subjected to impacting slightly the chamfer machining of also crackly LCD with glass sheet even be particularly suited for thickness to the calling hierarchy of dimensional accuracy or surface quality.
Description of drawings
Fig. 1 is the stereogram of expression grindstone of the present invention;
Fig. 2 is the key diagram of the binding structure of expression grindstone of the present invention and drive source;
Fig. 3 is the major part approximate three-dimensional map of the chamfer processing method of expression glass sheet of the present invention.
Among the figure:
10-grindstone;
10a-discoid basic component;
The hole portion of 10a '-discoid basic component;
10b-impact absorbing layer;
10c-abrasive grain layer;
10d-endless groove;
11-rotating shaft;
12-belt wheel;
13-band;
14-motor;
15-rough lapping grindstone;
16-smooth grinding grindstone;
G-glass sheet.
The specific embodiment
Grindstone of the present invention, it is characterized in that, has following structure: the impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, surface at this impact absorbing layer is provided with abrasive grain layer, and the material of discoid basic component that constitutes the central part of grindstone of the present invention can be used aluminium, steel, superhard alloy, molybdenum, molybdenum alloy, cermet (cermet), titanium or pottery etc.And, as the steel material, for example can also use carbon tool steel, alloy tool steel, high-speed steel etc.
In addition, the abrasive grain layer of formation outermost layer portion is to make by the mixture of bond material and a plurality of abrasive particles is fired.As bond material, can use with heat-curing resin and be resinoid bond of principal component etc., in addition, as abrasive particle, can use diamond particles, aluminium oxide particles, carborundum example, cubic boron nitride particle, metal oxide particle, metal carbides particle, metal nitride particle etc.Constituting the bond material of abrasive grain layer and the proper proportion of abrasive particle is, bond material is that 30～97 volume %, abrasive particle are 3～70 volume %, and the part of abrasive particle is exposed making from the outer surface of abrasive grain layer.In addition, the particle diameter of abrasive particle is as long as suitably select according to the calling hierarchy of its amount of grinding or polished surface roughness, for example, as long as in #100～3000, preferably the scope in #600～1000 suitably determines.
In addition, material as the impact absorbing layer between discoid basic component and abrasive grain layer, suitable material is to have the high elasticity that makes the impulsive force decline that puts on machined object when machined object contact grindstone, even and at high temperature expose also indeformable for a long time.Specifically, heat-curing resins such as phenolic resins, ABS resin, silicone resin, Lauxite, melmac, mylar, polyurethane resin, epoxy resin, polyimide resin, polycarbonate resin are appropriate resin.Especially phenolic resins, it is difficult to distortion and cheap, so be only.In addition,, can not get enough shock absorbing capabilities when the thickness of impact absorbing layer hour, on the one hand, when thickness is big, because the grindstone easy deformation, so should be limited in 5～30mm, be preferably limited to the scope of 10～20mm.
In addition, the rotation round speed of grindstone of the present invention can suitably be adjusted according to the translational speed of the material of grindstone and machined object or shape, machined object, amount of grinding etc., but for example carrying out under the situation of LCD with the smooth grinding processing of glass sheet, be adjusted into 1000～3000m/ branch, the rotation round speed that preferred 1800～2000m/ divides gets final product.
In order to make grindstone of the present invention, at first prepare discoid alloy.Then, on the outer circumference surface of discoid basic component, engage the impact absorbing layer that constitutes by elastomeric material with binding agent.The shape of this impact absorbing layer is circular, and its inner peripheral surface is connected to the outer circumference surface of discoid basic component and makes.Then, the outer circumference surface at impact absorbing layer engages abrasive grain layer with binding agent.The shape of this abrasive grain layer also is circular, and its inner peripheral surface is connected to the outer circumference surface of impact absorbing layer and makes.Afterwards,, form wall scroll or many s' endless groove, finish grindstone thus at its outer circumference surface to abrasive grain layer implementation tool processing (tooling), finishing (dressing).
The end-face processing method of glass sheet of the present invention is that end face by making glass sheet is along the relatively move end-face processing method of the glass sheet processed of grindstone, it is characterized in that, the structure that described grindstone has is: the impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, surface engagement at this impact absorbing layer has abrasive grain layer, as the glass sheet that uses, preferred thickness is below 3.0mm, more preferably below 0.7mm.
Below, describe the present invention in detail based on embodiment.
Fig. 1 is the stereogram of expression grindstone 10 of the present invention.This grindstone 10 is made of aluminum, and by constituting as the lower part: the circular abrasive grain layer 10c (thickness 5mm) of the outer circumference surface that have the discoid basic component 10a of the 10a ' of hole portion (external diameter 120mm, internal diameter 80mm, thickness 40mm) at the center, be engaged in impact absorbing layer 10b (thickness 10mm) that the circular for example phenolic resins of the outer circumference surface of this discoid basic component 10a makes, is engaged in this impact absorbing layer 10b.
Above-mentioned discoid basic component 10a and impact absorbing layer 10b are engaged by the hear resistance binding agent, and impact absorbing layer 10b and abrasive grain layer 10c are also engaged by the hear resistance binding agent.In addition, abrasive grain layer 10c is by a plurality of diamond abrasive grains (for example particle diameter is #600～1000) and the mixture of metal adhesive (bond material) are fired into circular the making.In addition, to the processing of this abrasive grain layer 10c implementation tool, finishing, be formed with the endless groove 10d (well width 1.0mm) of many (for example 10～30) at its outer surface.
Fig. 2 is the key diagram of the binding structure of above-mentioned grindstone 10 of expression and drive source.Grindstone 10 links with rotating shaft 11 coaxially by the hole portion that is formed centrally therein, this rotating shaft 11 is with 13 to link with motor 14 by being installed on the belt wheel 12, by motor 14 work, rotating shaft 11 rotations drive, and grindstone 10 carries out the circumference rotation.
Below, describe for the method for using above-mentioned grindstone 10 to carry out the chamfer machining of glass sheet.
Fig. 3 is the major part approximate three-dimensional map of embodiment notion of the chamfer processing method of expression glass sheet G of the present invention.As shown in Figure 3, glass sheet G moves to the direction (the arrow method among the figure) along end face with certain speed under the effect of transport mechanisms (omitting diagram) such as band conveyer, is crimped and is sticked in the grindstone 15,16 that both sides are provided with in the way of carrying channel.Rough lapping grindstone 15 as the upstream side that is positioned at the conveyance direction uses the metal adhesive diamond wheel that uses generally speaking, and in addition, the grindstone 16 as the smooth grinding that is positioned at the downstream is used uses above-mentioned grindstone of the present invention 10.
The direction of rotation of described grindstone 15,16 is directions opposite with the translational speed of glass sheet G.In addition, the tilting action of the rotation of each grindstone 15,16 can carry out in 0～45 ° scope, and it is suitable using 0～30 ° scope usually.
The present invention especially preferably is applicable to the chamfer machining of the LCD of thin-walled with glass sheet.For example, at the LCD with 1100 * 1250 * 0.7mm size during with the smooth grinding of the end face of glass sheet, by the speed conveyance glass sheet G that divides with 4m/ on one side, at first send into rough lapping grindstone 15 on one side, both ends of the surface to glass sheet G are carried out rough lapping, then glass sheet G is sent into smooth grinding with grindstone 16, thus the both ends of the surface of glass sheet G are carried out smooth grinding.And, rough lapping is set at following condition with grindstone 15: diameter be 150mm, highly (axis direction width) be that 10～40mm, grinding stone granularity are #300～600, rotation round speed is 1500～3500m/ branch, in addition, smooth grinding is set at following condition with grindstone 16: diameter be 150mm, highly (axis direction width) be that 30～100mm, grinding stone granularity are #600～1000, rotation round speed is 1800～2000m/ branch.In addition, to the grinding part water spray, prevent the obstruction of grinding stone face.Consequently can obtain not having damaged or damaged, and not have inequality, have by the glass sheet G of the circular-arc chamfer machining face of Even Grinding.In addition, carry out chamfer machining with above-mentioned same LCD with glass sheet to 10000 continuously, also do not take place damaged or damaged.
So, grindstone of the present invention so when abrasive sheet glass, relax the impulsive force to glass sheet, therefore can prevent the damaged or damaged of glass sheet owing to have impact absorbing layer, and can suppress the pollution that causes because of glass dust etc.Therefore, grindstone of the present invention is suitable for dimensional accuracy or the high display glass sheet of surface quality calling hierarchy, is particularly suited for as such thin-walled of liquid crystal display glass substrate and damaged easily glass sheet are carried out the grindstone that smooth grinding is used.
Claims (7)
1. a grindstone is characterized in that, it has following structure:
The impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, is provided with abrasive grain layer on the surface of this impact absorbing layer.
2. grindstone as claimed in claim 1 is characterized in that,
Impact absorbing layer is formed by heat-curing resin.
3. grindstone as claimed in claim 2 is characterized in that,
Heat-curing resin is any in the following resin, and described resin has: phenolic resins, silicone resin, Lauxite, melmac, mylar, polyurethane resin, epoxy resin, polyimide resin, polycarbonate resin.
4. as each described grindstone in the claim 1～3, it is characterized in that,
Abrasive grain layer is that the bond of principal component constitutes by a large amount of abrasive particles with the heat-curing resin.
5. the end-face processing method of a glass sheet, be end face by making glass sheet along the relatively move end-face processing method of the glass sheet processed of grindstone, it is characterized in that,
Described grindstone has following structure: the impact absorbing layer that is made of elastomeric material is set on the outer circumference surface of discoid basic component, is provided with abrasive grain layer on the surface of this impact absorbing layer.
6. the end-face processing method of glass sheet as claimed in claim 5 is characterized in that,
The thickness of glass sheet is below 3.0mm.
7. the end-face processing method of glass sheet as claimed in claim 5 is characterized in that,
The thickness of glass sheet is below 0.7mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006274862A JP5305214B2 (en) | 2006-10-06 | 2006-10-06 | End face processing method of plate glass |
| JP274862/2006 | 2006-10-06 | ||
| PCT/JP2007/067406 WO2008044408A1 (en) | 2006-10-06 | 2007-09-06 | Grindstone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101500755A true CN101500755A (en) | 2009-08-05 |
| CN101500755B CN101500755B (en) | 2012-03-07 |
Family
ID=39282617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800289857A Active CN101500755B (en) | 2006-10-06 | 2007-09-06 | Grindstone |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5305214B2 (en) |
| KR (1) | KR101429044B1 (en) |
| CN (1) | CN101500755B (en) |
| TW (1) | TWI429507B (en) |
| WO (1) | WO2008044408A1 (en) |
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| CN102642161A (en) * | 2011-02-16 | 2012-08-22 | 昭和电工株式会社 | Method for producing glass substrate for magnetic recording medium |
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| CN105563364A (en) * | 2014-09-30 | 2016-05-11 | 长春石油化学股份有限公司 | Buffer whetstone, its manufacturing method and use |
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2007
- 2007-09-06 KR KR1020087030046A patent/KR101429044B1/en active IP Right Grant
- 2007-09-06 CN CN2007800289857A patent/CN101500755B/en active Active
- 2007-09-06 WO PCT/JP2007/067406 patent/WO2008044408A1/en active Application Filing
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| CN102642161A (en) * | 2011-02-16 | 2012-08-22 | 昭和电工株式会社 | Method for producing glass substrate for magnetic recording medium |
| TWI595971B (en) * | 2012-06-13 | 2017-08-21 | Nippon Electric Glass Co | Plate glass processing device and plate glass manufacturing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2008093744A (en) | 2008-04-24 |
| WO2008044408A1 (en) | 2008-04-17 |
| TW200827100A (en) | 2008-07-01 |
| TWI429507B (en) | 2014-03-11 |
| KR101429044B1 (en) | 2014-08-11 |
| CN101500755B (en) | 2012-03-07 |
| KR20090074000A (en) | 2009-07-03 |
| JP5305214B2 (en) | 2013-10-02 |
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