TWI429507B - End face working method of plate glass - Google Patents
End face working method of plate glass Download PDFInfo
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- TWI429507B TWI429507B TW096134017A TW96134017A TWI429507B TW I429507 B TWI429507 B TW I429507B TW 096134017 A TW096134017 A TW 096134017A TW 96134017 A TW96134017 A TW 96134017A TW I429507 B TWI429507 B TW I429507B
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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
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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
- B24D5/16—Bushings; Mountings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Description
本發明是關於一種適合於對由玻璃、陶瓷等脆性材料構成的板狀物進行研削的旋轉磨石，尤其是關於一種適用於對液晶顯示器用板玻璃(厚度為0.1~0.7mm)或電漿顯示器用板玻璃(厚度為1.0~3.0mm)等顯示器用板玻璃進行倒角加工的旋轉磨石。The present invention relates to a rotary grindstone suitable for grinding a plate composed of a brittle material such as glass or ceramics, and more particularly to a plate glass (thickness of 0.1 to 0.7 mm) or plasma suitable for liquid crystal display. A rotating grindstone for chamfering the display panel glass such as a plate glass (thickness of 1.0 to 3.0 mm) for display.
近年來，液晶顯示器應用於電視、個人電腦、行動電話等多方面。而且，電漿顯示器多用於大屏幕電視。In recent years, liquid crystal displays have been used in many fields such as televisions, personal computers, and mobile phones. Moreover, plasma displays are mostly used for large screen televisions.
就用於液晶顯示器或電漿顯示器等顯示器中的板玻璃而言，當其主要面上存在內部缺陷(氣泡、混入異物等)或外部缺陷(凹凸、傷痕、附著異物、污染等)時，會產生像變形或不正常、污點、亮點等，從而成為導致顯示不清晰的致命傷，因而，自製造工程至精加工工程為止，須在維持高精度及精密性之嚴格管理下進行製造。In the case of a sheet glass used for a display such as a liquid crystal display or a plasma display, when there are internal defects (bubbles, foreign matter, etc.) or external defects (concavities, bumps, foreign matter, contamination, etc.) on the main surface, Produced like deformation or abnormality, stains, bright spots, etc., resulting in fatal injuries that cause unclear display. Therefore, it must be manufactured under strict management of high precision and precision from manufacturing to finishing.
而且，顯示器用板玻璃，在由玻璃製造商成形之後，是切割成規定的尺寸之後再出貨，但由於其切割面是粗面，故而在後續工序中會容易造成缺損或破損，為了防止產生上述缺損或破損，須實施倒角加工。Further, after the sheet glass for display is formed by a glass manufacturer, it is cut into a predetermined size and then shipped. However, since the cut surface is rough, it is likely to cause defects or breakage in subsequent processes, in order to prevent generation. For the above defects or damage, chamfering shall be carried out.
先前，一般而言，顯示器用板玻璃的倒角加工，是藉由將具有槽寬稍寬於板玻璃厚度的環狀槽的粗研削用旋轉磨石按壓在板玻璃的端面而進行粗研削，繼而，藉由將具有同樣形狀的環狀槽的精加工研削用旋轉磨石按壓在板玻 璃的端面而進行精加工研削。Conventionally, in general, the chamfering process of the plate glass for a display is performed by pressing a rough grinding rotary grindstone having an annular groove having a groove width slightly wider than the thickness of the plate glass to the end surface of the plate glass. Then, by using a rotary grindstone for finishing grinding of an annular groove having the same shape, pressing on the plate glass Finishing and grinding of the end face of the glass.
通常，作為粗研削用旋轉磨石，使用的是砂輪(金屬結合劑鑽石砂輪，Metal-Bonded Diamond Grinding Wheel)，該砂輪是藉由在中心具有孔部的圓盤狀(圓環狀)金屬底座的外周面安裝由金屬結合劑所保持的鑽石磨粒層而形成，而且，作為精加工研削用旋轉磨石，使用的是由聚胺基甲酸酯樹脂等而使金屬底座的外周面黏合有碳化矽等細磨粒的砂輪(樹脂結合劑砂輪，Resin-Bonded Wheels)。Usually, as a rotary grinding stone for rough grinding, a grinding wheel (Metal-Bonded Diamond Grinding Wheel) is used, which is a disk-shaped (annular) metal base having a hole in the center. The outer peripheral surface is formed by a diamond abrasive grain layer held by a metal bond, and as the rotary grindstone for finishing grinding, the outer peripheral surface of the metal base is bonded by a polyurethane resin or the like. A fine abrasive wheel such as tantalum carbide (Resin-Bonded Wheels).
上述方法中，是藉由將形成於各旋轉磨石上的環狀槽壓接於移動的板玻璃的端面而進行倒角加工，但在利用精加工研削用旋轉磨石對板玻璃進行研削時，板玻璃有時會缺損或破損。一般認為其原因在於，精加工研削用旋轉磨石是藉由利用樹脂而使外周面黏合有磨粒而製成的，其與粗研削用旋轉磨石相比強度較低，研削力較差，因此對玻璃板的負荷較大，容易對玻璃板施加衝擊。In the above method, the annular groove formed in each of the rotating grindstones is crimped to the end surface of the moving plate glass, and chamfering is performed. However, when the plate glass is ground by the rotary grinding stone for finishing grinding, Plate glass is sometimes damaged or broken. The reason for this is that the rotary grindstone for finishing grinding is produced by adhering abrasive grains to the outer peripheral surface by using a resin, and the strength is lower than that of the rough grinding grindstone, and the grinding force is poor. The load on the glass plate is large, and it is easy to apply an impact to the glass plate.
而且，越是增大板玻璃的移動速度，或者越是增大精加工研削用旋轉磨石的旋轉速度，則施加至板玻璃的衝擊力就會越大，從而更容易導致板玻璃缺損或破損，故而，難以提高生產性。Moreover, the more the moving speed of the sheet glass is increased, or the more the rotating speed of the rotating grinding stone for finishing grinding is increased, the impact force applied to the sheet glass is increased, and the sheet glass is more likely to be damaged or broken. Therefore, it is difficult to improve productivity.
針對如此之情況，先前提出有各種防止對板玻璃的端部進行倒角加工時發生缺損或破損的方法(例如專利文獻1)。In view of such a situation, various methods for preventing occurrence of breakage or breakage when chamfering the end portion of the sheet glass have been proposed have been proposed (for example, Patent Document 1).
[專利文獻1]日本專利特開平9-235145號公報[Patent Document 1] Japanese Patent Laid-Open No. Hei 9-235145
在專利文獻1中，揭示有一種使板玻璃的端部預先披覆液狀樹脂層並使液狀樹脂層硬化之後，再利用磨石進行倒角加工的方法。根據上述方法，預先於板玻璃端部的表面塗佈凝固性樹脂，再一併對該樹脂及板玻璃的端部進行倒角加工，藉此可不會出現缺損等缺陷。Patent Document 1 discloses a method in which an end portion of a sheet glass is preliminarily coated with a liquid resin layer and the liquid resin layer is cured, and then chamfering is performed by using a grindstone. According to the above method, the coagulating resin is applied to the surface of the end portion of the plate glass in advance, and the end portions of the resin and the plate glass are chamfered together, whereby defects such as defects are not caused.
然而，於上述方法中，需要對板玻璃的欲進行倒角加工的端部的整個表面塗佈液狀樹脂的工程，進而也需要在倒角加工之後去除殘存在板玻璃表面的樹脂的工程，故而，存在導致生產效率大幅降低的問題。However, in the above method, it is necessary to apply a liquid resin to the entire surface of the end portion of the sheet glass to be chamfered, and further, it is necessary to remove the resin remaining on the surface of the sheet glass after the chamfering process. Therefore, there is a problem that the production efficiency is greatly reduced.
本發明的目的在於提供一種不會導致生產效率降低，並且即便對板玻璃的端部進行倒角加工亦能夠防止產生缺損或破損的旋轉磨石以及板玻璃的端面加工方法。An object of the present invention is to provide a method for processing an end face of a rotating grindstone and a sheet glass which can prevent occurrence of breakage or breakage even if the end portion of the sheet glass is chamfered without causing a decrease in production efficiency.
本發明者等人為達成上述目的而反覆進行了各種實驗，最終發現，在利用旋轉磨石對板玻璃的端部進行倒角加工時，藉由使用可使施加至板玻璃的衝擊力降低的旋轉磨石，可抑制板玻璃產生缺損或破損，從而提出本發明。The present inventors have carried out various experiments in order to achieve the above object, and finally found that when the end portion of the sheet glass is chamfered by the rotating grindstone, the rotation which can reduce the impact force applied to the sheet glass is used. The grindstone can suppress the occurrence of defects or breakage of the sheet glass, and thus the present invention has been proposed.
亦即，本發明的旋轉磨石的特徵在於具有以下構造：於圓盤狀金屬底座的外周面，設有由彈性材料構成的衝擊吸收層，且於該衝擊吸收層的表面設有磨粒層。That is, the rotating grindstone of the present invention is characterized in that it has a configuration in which an impact absorbing layer made of an elastic material is provided on the outer peripheral surface of the disc-shaped metal base, and an abrasive layer is provided on the surface of the impact absorbing layer. .
而且，本發明的旋轉磨石的特徵在於，衝擊吸收層是由熱固性樹脂所形成。Moreover, the rotating grindstone of the present invention is characterized in that the impact absorbing layer is formed of a thermosetting resin.
而且，本發明的旋轉磨石的特徵在於，熱固性樹脂是選自苯酚樹脂、矽酮樹脂、脲樹脂、三聚氰胺樹脂、聚酯 樹脂、聚胺基甲酸酯樹脂、環氧樹脂、聚醯亞胺樹脂、聚碳酸酯樹脂之群中的1種。Further, the rotating grindstone of the present invention is characterized in that the thermosetting resin is selected from the group consisting of a phenol resin, an anthrone resin, a urea resin, a melamine resin, and a polyester. One of a group of a resin, a polyurethane resin, an epoxy resin, a polyimide resin, and a polycarbonate resin.
而且，本發明的旋轉磨石的特徵在於，磨粒層是由大量的磨粒、及以熱固性樹脂為主成分的結合劑所構成。Further, the rotating grindstone of the present invention is characterized in that the abrasive grain layer is composed of a large amount of abrasive grains and a binder mainly composed of a thermosetting resin.
而且，本發明的板玻璃的端面加工方法，是藉由使板玻璃的端面沿旋轉磨石相對移動而進行加工的，此加工方法的特徵在於，上述旋轉磨石具有以下構造：於圓盤狀金屬底座的外周面，設有由彈性材料構成的衝擊吸收層，於該衝擊吸收層的表面接合有磨粒層。Further, the end face processing method of the sheet glass of the present invention is processed by relatively moving the end surface of the sheet glass along the rotating grindstone, and the processing method is characterized in that the rotary grindstone has the following structure: in the form of a disk The outer peripheral surface of the metal base is provided with an impact absorbing layer made of an elastic material, and an abrasive grain layer is bonded to the surface of the impact absorbing layer.
而且，本發明的板玻璃的端面加工方法的特徵在於，板玻璃的厚度小於等於3.0mm。Further, the end face processing method of the sheet glass of the present invention is characterized in that the thickness of the sheet glass is 3.0 mm or less.
而且，本發明的板玻璃的端面加工方法的特徵在於，板玻璃的厚度小於等於0.7mm。Further, the end face processing method of the sheet glass of the present invention is characterized in that the thickness of the sheet glass is 0.7 mm or less.
本發明的旋轉磨石中，於圓盤狀金屬底座與磨粒層之間介有由彈性材料構成的衝擊吸收層，故而，於被加工物接觸至旋轉磨石時，利用衝擊吸收層的彈性變形，來緩和施加於被加工物的衝擊。因此，當使用該旋轉磨石來對板玻璃的端部進行倒角加工時，可緩和自旋轉磨石施加至板玻璃的衝擊力，從而進行微細加工，故而可防止產生缺損或破損，可獲得經均勻研磨而無不均的圓弧狀(R狀)倒角加工面。而且，一般而言，若旋轉磨石對玻璃板的負荷較大，則玻璃板的端面會產生灼燒不良，即，由因研削引起的摩擦熱而導致玻璃表面軟化變形的現象，但本發明的 旋轉磨石對玻璃板的負荷較小，故而亦可防止產生灼燒不良。In the rotary grindstone of the present invention, an impact absorbing layer made of an elastic material is interposed between the disc-shaped metal base and the abrasive grain layer, so that the elasticity of the impact absorbing layer is utilized when the workpiece contacts the rotating grindstone. Deformation to alleviate the impact applied to the workpiece. Therefore, when the end portion of the sheet glass is chamfered by using the rotating grindstone, the impact force applied to the sheet glass by the spin grindstone can be alleviated, and fine processing can be performed, thereby preventing occurrence of defects or breakage. An arc-shaped (R-shaped) chamfered surface that is uniformly ground without unevenness. Moreover, in general, if the load of the rotating grindstone on the glass plate is large, the end face of the glass plate may cause a burning failure, that is, a phenomenon in which the glass surface is softened and deformed by the frictional heat caused by the grinding, but the present invention of The rotating grindstone has a small load on the glass plate, so that it can prevent the occurrence of poor burning.
而且，本發明的旋轉磨石，即便高速旋轉，其施加至板玻璃的衝擊力亦較小，故而，不會發生缺損或破損，且可縮短倒角加工的時間，亦可大幅提高生產性。Further, the rotating grindstone of the present invention has a small impact force applied to the sheet glass even at a high speed, so that no occurrence of breakage or breakage can be achieved, and the time for chamfering can be shortened, and productivity can be greatly improved.
而且，本發明的旋轉磨石可均勻地對玻璃板的端面進行微細加工，故而可將堵塞於環狀槽內的玻璃粉等異物抑制得極小，從而，可製成因所述異物所產生的灰塵較少而具有清潔表面的玻璃板。Further, since the rotary grindstone of the present invention can finely process the end surface of the glass sheet uniformly, it is possible to suppress foreign matter such as glass frit clogging in the annular groove to an extremely small extent, thereby making it possible to produce the foreign matter due to the foreign matter. A glass plate with less dust and a clean surface.
而且，根據本發明的板玻璃的端面加工方法，可高效地生產無缺損或破損的清潔板玻璃。因此，適用於對於要求具有較高的尺寸精度及表面品質的顯示器用板玻璃進行倒角加工中，尤其可較好地用於厚度小於等於0.7mm且若受到微弱衝擊亦容易破裂的液晶顯示器用板玻璃的倒角加工中。Moreover, according to the end face processing method of the sheet glass of the present invention, it is possible to efficiently produce a clean sheet glass which is free from defects or breakage. Therefore, it is suitable for liquid crystal display for chamfering of panel glass for displays requiring high dimensional accuracy and surface quality, and is particularly preferably used for liquid crystal displays having a thickness of 0.7 mm or less and being easily broken by a weak impact. The chamfering of the sheet glass is processed.
本發明的旋轉磨石的特徵在於具有以下構造：於圓盤狀金屬底座的外周面，設有由彈性材料構成的衝擊吸收層，且於該衝擊吸收層的表面設有磨粒層，其中，構成旋轉磨石中心部的圓盤狀金屬底座的材質可使用鋁、鋼、超硬合金、鉬、鉬合金、金屬陶瓷(cermet)、鈦或陶瓷等。另外，作為鋼材料，例如可使用高碳工具鋼(high-carbon tool steel)、合金工具鋼(alloy tool steel)、高速鋼(high-speed steel)等。The rotating grindstone of the present invention is characterized in that: an outer surface of the disc-shaped metal base is provided with an impact absorbing layer made of an elastic material, and an abrasive layer is provided on the surface of the impact absorbing layer, wherein As the material of the disc-shaped metal base constituting the center portion of the rotating grindstone, aluminum, steel, super hard alloy, molybdenum, molybdenum alloy, cermet, titanium or ceramic can be used. Further, as the steel material, for example, high-carbon tool steel, alloy tool steel, high-speed steel, or the like can be used.
而且，構成最外層部的磨粒層是藉由對黏合材料與大量磨粒的混合物進行鍛燒而製成的。作為黏合材料，可使用以熱固性樹脂為主成分的樹脂結合劑(resin bond)等，而且，作為磨粒，可使用鑽石粒子、氧化鋁粒子、碳化矽粒子、立方晶氮化硼粒子、金屬氧化物粒子、金屬碳化物粒子、金屬氮化物粒子等。構成磨粒層的黏合材料與磨粒的比例適當的是，黏合材料為30~97體積%，磨粒為3~70體積%，並且以自磨粒層的外表面露出有磨粒的一部分的方式而製作。而且，磨粒的粒徑可根據其研削量及精加工表面粗度要求等級來選擇，例如可在# 100~3000，較好的是在# 600~1000的範圍內適當選擇。Further, the abrasive grain layer constituting the outermost layer portion is produced by calcining a mixture of the binder material and a large amount of abrasive grains. As the binder, a resin bond containing a thermosetting resin as a main component or the like can be used, and as the abrasive grains, diamond particles, alumina particles, cerium carbide particles, cubic boron nitride particles, and metal oxide can be used. Particles, metal carbide particles, metal nitride particles, and the like. The ratio of the adhesive material constituting the abrasive layer to the abrasive grains is suitably 30 to 97% by volume of the binder, 3 to 70% by volume of the abrasive grains, and a part of the abrasive grains is exposed on the outer surface of the self-abrasive layer. Made by the way. Further, the particle size of the abrasive grains can be selected according to the amount of grinding and the level of finishing surface roughness, and can be appropriately selected, for example, from #100 to 3,000, preferably from #600 to 1,000.
而且，作為介於圓盤狀金屬底座與磨粒層之間的衝擊吸收層的材質，下述材料較為適合：具備當被加工物接觸於旋轉磨石時可降低施加至被加工物的衝擊力的高彈性，且即便長期曝露在高溫下亦不會變形。具體而言，適合的是苯酚樹脂、ABS樹脂、矽酮樹脂、脲樹脂、三聚氰胺樹脂、聚酯樹脂、聚胺基甲酸酯樹脂、環氧樹脂、聚醯亞胺樹脂、聚碳酸酯樹脂等熱固性樹脂。尤其是苯酚樹脂不易變形且廉價，故而最為合適。而且，若衝擊吸收層的厚度較小，則無法獲得充分的衝擊吸收性能，另一方面，若厚度較大，則旋轉磨石容易變形，故而應將衝擊吸收層的厚度限制在5~30mm，較好的是10~20mm的範圍內。Further, as a material of the impact absorbing layer interposed between the disc-shaped metal base and the abrasive grain layer, the following materials are suitable: the impact force applied to the workpiece can be reduced when the workpiece is in contact with the rotating grindstone It is highly elastic and will not deform even after prolonged exposure to high temperatures. Specifically, a phenol resin, an ABS resin, an anthrone resin, a urea resin, a melamine resin, a polyester resin, a polyurethane resin, an epoxy resin, a polyimide resin, a polycarbonate resin, etc. are suitable. Thermosetting resin. In particular, the phenol resin is most easily deformed and inexpensive. Further, if the thickness of the impact absorbing layer is small, sufficient impact absorption performance cannot be obtained. On the other hand, if the thickness is large, the rotating grindstone is easily deformed, so the thickness of the impact absorbing layer should be limited to 5 to 30 mm. It is preferably in the range of 10 to 20 mm.
而且，本發明的旋轉磨石的旋轉周速度，可根據旋轉磨石及被加工物的材質及形狀、被加工物的移動速度、研 削量等來作適當調整，例如，當對液晶顯示器用板玻璃進行精加工研削加工時，可將旋轉周速度調整成1000~3000m/min，較好的是1800~2000m/min。Further, the rotational peripheral speed of the rotating grindstone of the present invention can be determined based on the material and shape of the rotating grindstone and the workpiece, and the moving speed of the workpiece. The amount of shaving or the like is appropriately adjusted. For example, when the plate glass for liquid crystal display is subjected to finishing grinding, the rotation peripheral speed can be adjusted to 1000 to 3000 m/min, preferably 1800 to 2000 m/min.
在製作本發明的旋轉磨石時，首先準備圓盤狀的金屬底座。接著，利用黏接劑，使圓盤狀金屬底座的外周面接合於由彈性材料構成的衝擊吸收層。該衝擊吸收層的形狀為圓環狀，且使其內周面抵接於圓盤狀金屬底座的外周面。繼而，於衝擊吸收層的外周面，利用黏接劑接合磨粒層。該磨粒層的形狀亦為圓環狀，且使其內周面抵接於衝擊吸收層的外周面。其後，對磨粒層實施工具加工(tooling)、打磨(dressing)，於其外周面形成單條或多條環狀槽，藉此製成旋轉磨石。In the production of the rotating grindstone of the present invention, a disk-shaped metal base is first prepared. Next, the outer peripheral surface of the disk-shaped metal base is bonded to the impact absorbing layer made of an elastic material by an adhesive. The impact absorbing layer has an annular shape and has an inner peripheral surface that abuts against an outer peripheral surface of the disk-shaped metal base. Then, on the outer peripheral surface of the impact absorbing layer, the abrasive grain layer is bonded by an adhesive. The abrasive grain layer is also in the shape of an annular shape, and its inner peripheral surface abuts against the outer peripheral surface of the impact absorbing layer. Thereafter, the abrasive grain layer is subjected to tooling and dressing, and a single or a plurality of annular grooves are formed on the outer peripheral surface thereof to thereby form a rotating grindstone.
本發明的板玻璃的端面加工方法，是藉由使板玻璃的端面沿旋轉磨石相對移動而進行加工，上述旋轉磨石的特徵在於具有以下構造：於圓盤狀金屬底座的外周面，設有由彈性材料構成的衝擊吸收層，且於該衝擊吸收層的表面接合有磨粒層，作為所使用的板玻璃，較好的是厚度小於等於3.0mm，更好的是小於等於0.7mm。The end face processing method of the sheet glass of the present invention is processed by relatively moving the end surface of the sheet glass along the rotating grindstone, and the rotary grindstone is characterized by having the following structure: on the outer peripheral surface of the disc-shaped metal base, There is an impact absorbing layer made of an elastic material, and an abrasive grain layer is bonded to the surface of the impact absorbing layer. As the plate glass to be used, the thickness is preferably 3.0 mm or less, more preferably 0.7 mm or less.
以下，根據實施例詳細說明本發明。Hereinafter, the present invention will be described in detail based on examples.
圖1是表示本發明的旋轉磨石10的立體圖。該旋轉磨石10包括：於中心具有孔部10a'的鋁製圓盤狀金屬底座10a(外徑為120mm、內徑為80mm、厚度為40mm)；接合於上述圓盤狀金屬底座10a外周面的圓環狀的例如苯 酚樹脂製衝擊吸收層10b(厚度為10mm)；以及，接合於上述衝擊吸收層10b外周面的圓環狀磨粒層10c(厚度為5mm)。Fig. 1 is a perspective view showing a rotary grindstone 10 of the present invention. The rotating grindstone 10 includes an aluminum disk-shaped metal base 10a having an opening portion 10a' at the center (having an outer diameter of 120 mm, an inner diameter of 80 mm, and a thickness of 40 mm); and being joined to the outer peripheral surface of the disc-shaped metal base 10a. Ring-shaped such as benzene The impact absorbing layer 10b (thickness: 10 mm) made of a phenol resin; and an annular abrasive grain layer 10c (having a thickness of 5 mm) joined to the outer peripheral surface of the above-mentioned impact absorbing layer 10b.
上述圓盤狀金屬底座10a與衝擊吸收層10b之間利用耐熱性黏接劑而接合著，衝擊吸收層10b與磨粒層10c之間亦是利用耐熱性黏接劑而接合著。而且，磨粒層10c是藉由將大量鑽石磨粒(例如粒徑為# 600~1000)與金屬結合劑(黏合材料)的混合物燒成為圓環狀而製成。而且，對上述磨粒層10c實施工具加工、打磨，從而使其外表面形成有多條(例如10~30條)環狀槽10d(槽寬為1.0mm)。The disk-shaped metal base 10a and the shock absorbing layer 10b are joined by a heat-resistant adhesive, and the impact-absorbing layer 10b and the abrasive grain layer 10c are also joined by a heat-resistant adhesive. Further, the abrasive grain layer 10c is produced by firing a mixture of a large amount of diamond abrasive grains (for example, a particle size of #600 to 1000) and a metal bond (adhesive material) into an annular shape. Further, the abrasive grain layer 10c is subjected to tooling and grinding to form a plurality of (for example, 10 to 30) annular grooves 10d (having a groove width of 1.0 mm) on the outer surface thereof.
圖2是表示上述旋轉磨石10與驅動源的連結構造的說明圖。旋轉磨石10是經由形成於其中心的孔部而同軸地連結於旋轉軸11，且該旋轉軸11經由安裝於傳送帶輪12上的傳送帶13而連結於馬達14，當馬達14運轉時，旋轉軸11進行旋轉驅動，藉此，旋轉磨石10進行周旋轉。FIG. 2 is an explanatory view showing a connection structure between the rotating grindstone 10 and a drive source. The rotating grindstone 10 is coaxially coupled to the rotating shaft 11 via a hole formed in the center thereof, and the rotating shaft 11 is coupled to the motor 14 via a conveyor belt 13 attached to the transfer pulley 12, and rotates when the motor 14 is operated. The shaft 11 is rotationally driven, whereby the rotating grindstone 10 is rotated circumferentially.
繼而，說明使用上述旋轉磨石10對板玻璃進行倒角加工的方法。Next, a method of chamfering the sheet glass using the above-described rotating grindstone 10 will be described.
圖3是表示本發明的板玻璃G的倒角加工方法的實施形態概念的主要部分概略立體圖。如圖3所示，板玻璃G藉由帶式輸送機等傳送機構(省略圖示)，向沿著端面的方向(圖中的箭頭方向)以固定的速度移動，並壓接扣合於設置在傳送路徑中途兩側的旋轉磨石15、16。作為位於傳送方向的上游側的粗研削用旋轉磨石15，可使用普遍使用的金屬結合劑鑽石砂輪，而且，作為位於下流側的精加工 研削用旋轉磨石16，可使用如上所述的本發明的旋轉磨石10。3 is a schematic perspective view of a main part showing an embodiment of a chamfering method of the sheet glass G of the present invention. As shown in FIG. 3, the sheet glass G is moved at a fixed speed in the direction along the end surface (the direction of the arrow in the drawing) by a transport mechanism (not shown) such as a belt conveyor, and is crimped and fastened. Rotating grindstones 15, 16 on either side of the transport path. As the rough grinding grindstone 15 located on the upstream side in the conveying direction, a commonly used metal bond diamond grinding wheel can be used, and as a finishing on the downstream side For the grinding grindstone 16 for grinding, the rotating grindstone 10 of the present invention as described above can be used.
上述旋轉磨石15、16的旋轉方向設為與板玻璃G的移動方向相反的方向。而且，各旋轉磨石15、16的旋轉軸線的偏斜可在0~45°的範圍內，通常適當的是在0~30°左右的範圍內。The rotation direction of the above-described rotating grindstones 15 and 16 is a direction opposite to the moving direction of the sheet glass G. Further, the deflection of the rotation axis of each of the rotating grindstones 15 and 16 may be in the range of 0 to 45°, and is usually suitably in the range of about 0 to 30°.
本發明尤其好的是，適用於薄壁的液晶顯示器用板玻璃的倒角加工中。例如，當對尺寸為1100×1250×0.7mm的液晶顯示器用板玻璃的端面進行精加工研削時，一邊以4m/min的速度傳送板玻璃G，一邊藉由首先將板玻璃G送至粗研削旋轉磨石15，而對板玻璃G的兩端面進行粗研削，繼而，將板玻璃G送至精加工研削用旋轉磨石16，藉此，對板玻璃G的兩端面進行精加工研削。另外，進行如下的條件設定：粗研削用旋轉磨石15的直徑為150mm、高度(軸線方向寬度)為10~40mm、磨石粒度為# 300~600、旋轉周速度為1500~3500m/min，而且，精加工研削用旋轉磨石16的直徑為150mm、高度(軸線方向寬度)為30~100mm、磨石粒度為# 600~1000、旋轉周速度為1800~2000m/min。而且，對研削部位噴水，以防止磨石面的堵塞。最終，獲得無缺損或破損且具有經均勻研磨而無不均的圓弧狀倒角加工面的板玻璃G。而且，連續對10000片與上述板玻璃G相同的液晶顯示器用板玻璃進行倒角加工，未發生缺損或破損。The present invention is particularly preferable in the chamfering process of a sheet glass for a thin-walled liquid crystal display. For example, when the end surface of the sheet glass for liquid crystal display having a size of 1100×1250×0.7 mm is subjected to finishing grinding, the sheet glass G is conveyed at a speed of 4 m/min, and the sheet glass G is first sent to the rough grinding. The grindstone 15 is rotated, and both end faces of the plate glass G are roughly ground, and then the plate glass G is sent to the rotary grindstone 16 for finishing grinding, whereby the both end faces of the plate glass G are subjected to finishing grinding. In addition, the following conditions are set: the diameter of the rough grinding grindstone 15 is 150 mm, the height (axial width) is 10 to 40 mm, the grindstone particle size is #300 to 600, and the rotational peripheral speed is 1500 to 3500 m/min. Further, the rotary grinding stone 16 for finishing grinding has a diameter of 150 mm, a height (axial width) of 30 to 100 mm, a grindstone particle size of #600 to 1000, and a rotational peripheral speed of 1800 to 2000 m/min. Moreover, water is sprayed on the grinding portion to prevent clogging of the stone surface. Finally, a sheet glass G having no rounded chamfered surface which is free from defects or breakage and which is uniformly ground without unevenness is obtained. Further, 10,000 sheets of the same sheet glass for liquid crystal display as the above-described sheet glass G were chamfered continuously, and no defects or breakage occurred.
如此，由於本發明的旋轉磨石具備衝擊吸收層，故而 可緩和當對板玻璃進行研削時對板玻璃的衝擊力，因此可防止板玻璃產生缺損或破損，且可抑制因玻璃粉等引起的污染。因此，本發明的旋轉磨石，適用於要求極高的尺寸精度及表面品質的顯示器用板玻璃，尤其可較好地用作對於如液晶顯示器用玻璃基板般薄壁且易破損的板玻璃進行精加工研削的旋轉磨石。Thus, since the rotating grindstone of the present invention has an impact absorbing layer, The impact on the plate glass when the plate glass is ground can be alleviated, so that the plate glass can be prevented from being damaged or broken, and contamination due to glass frit or the like can be suppressed. Therefore, the rotating grindstone of the present invention is suitable for sheet glass for displays requiring extremely high dimensional accuracy and surface quality, and is particularly preferably used as a thin-walled and easily damaged sheet glass such as a glass substrate for liquid crystal displays. Finished grinding of grinding stones.
10‧‧‧旋轉磨石10‧‧‧Rotating Millstone
10a‧‧‧圓盤狀金屬底座10a‧‧‧Disc metal base
10a'‧‧‧圓盤狀金屬底座的孔部10a'‧‧‧ hole in the disc-shaped metal base
10b‧‧‧衝擊吸收層10b‧‧‧impact absorption layer
10c‧‧‧磨粒層10c‧‧‧ abrasive layer
10d‧‧‧環狀槽10d‧‧‧ring groove
11‧‧‧旋轉軸11‧‧‧Rotary axis
12‧‧‧傳送帶輪12‧‧‧Conveyor pulley
13‧‧‧傳送帶13‧‧‧Conveyor belt
14‧‧‧馬達14‧‧‧Motor
15‧‧‧粗研削用旋轉磨石15‧‧‧Rough grinding with rotating grindstone
16‧‧‧精加工研削用旋轉磨石16‧‧‧Rolling grinding stone for finishing grinding
G‧‧‧板玻璃G‧‧‧ plate glass
圖1是表示本發明的旋轉磨石的立體圖。Fig. 1 is a perspective view showing a rotating grindstone of the present invention.
圖2是表示本發明的旋轉磨石與驅動源的連結構造的說明圖。Fig. 2 is an explanatory view showing a connection structure between a rotating grindstone and a drive source according to the present invention.
圖3是表示本發明的板玻璃的倒角加工方法的主要部分概略立體圖。Fig. 3 is a schematic perspective view showing a main part of a method of chamfering the sheet glass of the present invention.
10‧‧‧旋轉磨石10‧‧‧Rotating Millstone
10a‧‧‧圓盤狀金屬底座10a‧‧‧Disc metal base
10a'‧‧‧圓盤狀金屬底座的孔部10a'‧‧‧ hole in the disc-shaped metal base
10b‧‧‧衝擊吸收層10b‧‧‧impact absorption layer
10c‧‧‧磨粒層10c‧‧‧ abrasive layer
10d‧‧‧環狀槽10d‧‧‧ring groove
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006274862A JP5305214B2 (en) | 2006-10-06 | 2006-10-06 | End face processing method of plate glass |
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| TW200827100A TW200827100A (en) | 2008-07-01 |
| TWI429507B true TWI429507B (en) | 2014-03-11 |
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| TW096134017A TWI429507B (en) | 2006-10-06 | 2007-09-12 | End face working method of plate glass |
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| JP (1) | JP5305214B2 (en) |
| KR (1) | KR101429044B1 (en) |
| CN (1) | CN101500755B (en) |
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| CN106590529A (en) * | 2016-12-02 | 2017-04-26 | 大连圣洁热处理科技发展有限公司 | Composite wear-resisting abrasive material and application thereof |
| CN109794862B (en) * | 2019-03-11 | 2020-04-24 | 江苏赛扬精工科技有限责任公司 | Composite binder CBN grinding wheel for stainless steel medullary cavity reamer and application thereof |
| CN110877302B (en) * | 2019-12-04 | 2021-09-14 | 东莞市鼎泰鑫电子有限公司 | Scouring pad reinforced organic ceramic grinding tool and preparation method thereof |
| CN111941293B (en) * | 2020-08-20 | 2021-12-17 | 河南联合精密材料股份有限公司 | Metal bonding agent for edge grinding wheel, edge grinding wheel for processing plate glass and preparation method thereof |
| CN112123225A (en) * | 2020-08-26 | 2020-12-25 | 南京航空航天大学 | Elastic milling and polishing tool for machining brittle workpiece and manufacturing method thereof |
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| JPS5364891A (en) * | 1976-11-20 | 1978-06-09 | Showa Denko Kk | Grinding wheel usding high pressure phase boron nitride grit |
| US5368618A (en) * | 1992-01-22 | 1994-11-29 | Minnesota Mining And Manufacturing Company | Method of making a coated abrasive article |
| JP3018775B2 (en) * | 1992-09-18 | 2000-03-13 | 三菱マテリアル株式会社 | Whetstone and manufacturing method thereof |
| JPH10291149A (en) * | 1997-04-22 | 1998-11-04 | Central Glass Co Ltd | Angular part device for glass plate |
| JP3969505B2 (en) * | 1997-12-04 | 2007-09-05 | 株式会社クリスタル光学 | Chamfering method and apparatus |
| JPH11188638A (en) * | 1997-12-26 | 1999-07-13 | Mitsui Kensaku Toishi Kk | Grinding wheel and its manufacture |
| JP2002059346A (en) * | 2000-08-22 | 2002-02-26 | Nippon Electric Glass Co Ltd | Method and device for chamfering plate-like work |
| JP4588863B2 (en) * | 2000-11-21 | 2010-12-01 | 旭硝子株式会社 | Edge glass edge polishing method |
| JP4221463B2 (en) * | 2002-05-27 | 2009-02-12 | クレトイシ株式会社 | Grinding wheel |
| JP4143763B2 (en) * | 2003-08-06 | 2008-09-03 | 日立造船株式会社 | Polishing equipment |
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2006
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- 2007-09-06 CN CN2007800289857A patent/CN101500755B/en active Active
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| WO2008044408A1 (en) | 2008-04-17 |
| CN101500755A (en) | 2009-08-05 |
| KR20090074000A (en) | 2009-07-03 |
| KR101429044B1 (en) | 2014-08-11 |
| TW200827100A (en) | 2008-07-01 |
| CN101500755B (en) | 2012-03-07 |
| JP5305214B2 (en) | 2013-10-02 |
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