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Grindstone

A technology of grinding stones and abrasive grains, applied in the direction of grinding machines, abrasives, grinding/polishing equipment, etc., can solve problems such as production efficiency decline, and achieve the effects of realizing productivity, preventing poor heating, and preventing defects or damage

Active Publication Date: 2009-08-05
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, in this method, it is necessary to apply a liquid resin to the entire surface of the end portion of the plate glass to be chamfered, and to remove the resin remaining on the surface of the plate glass after the chamfering process. There is a problem of a significant drop in production efficiency

Method used

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Examples

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Embodiment 1

[0051] Hereinafter, the present invention will be described in detail based on examples.

[0052] figure 1 It is a perspective view which shows the rotating grindstone 10 of this invention. The rotary grindstone 10 is made of aluminum, and is composed of a disc-shaped base member 10a (outer diameter 120mm, inner diameter 80mm, thickness 40mm) having a hole 10a at the center, and joined to the disc-shaped base member 10a. An annular impact-absorbing layer 10b (thickness 10mm) made of, for example, phenolic resin, and an annular abrasive grain layer 10c (thickness 5mm) bonded to the outer circumferential surface of the impact-absorbing layer 10b.

[0053] The disc-shaped base member 10a and the impact absorbing layer 10b are bonded with a heat-resistant adhesive, and the shock-absorbing layer 10b and the abrasive grain layer 10c are also bonded with a heat-resistant adhesive. Moreover, the abrasive-grain layer 10c is produced by firing the mixture of several diamond abrasive g...

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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 [0001] The invention relates to a rotating grindstone suitable for grinding plates made of brittle materials such as glass and ceramics, in particular to a rotating grinding stone suitable for plate glass (thickness 0.1-0.7mm) for liquid crystal displays or plates for plasma displays. Rotary grindstone for chamfering plate glass for displays such as glass (thickness 1.0 to 3.0mm). Background technique [0002] In recent years, liquid crystal displays have been widely used in various applications such as televisions, personal computers, and mobile phones. In addition, plasma displays are mostly used in large-screen TVs. [0003] When there are internal defects (bubbles, foreign matter, etc.) or external defects (unevenness, scratches, foreign matter, contamination, etc.) on the main surface of plate glass used in displays such as liquid crystal displays and plasma displays, images will Distortion, blurring, turbidity, dead pixels, etc. will cause the display...

Claims

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Application Information

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IPC IPC(8): B24D5/00B24B9/10B24D3/00B24D3/28
CPCB24D3/28B24B9/10B24D5/16B24D3/00B24D5/00
Inventor 西村直树
Owner NIPPON ELECTRIC GLASS CO LTD
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