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Method for grinding plate-like body

A grinding method and plate-shaped body technology, which are applied in the direction of grinding machines, grinding drive devices, grinding machine parts, etc., can solve the problems of inability to improve the production efficiency of glass substrates, longer grinding time, and inability to grind continuously.

Active Publication Date: 2012-05-16
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the existing grinding device, when the grinding rate of the glass substrate decreases as the grinding time elapses, if the grinding rate is lower than the prescribed threshold, the grinding pad needs to be trimmed or modified, so there is a problem that the glass substrate cannot be improved. issues such as production efficiency
In addition, even when there is no necessity of dressing or modifying the grinding tool in the existing grinding device, since the grinding rate also decreases with the passage of grinding time, the grinding rate cannot be formed to be approximately constant for continuous grinding. There is a problem that the grinding time becomes longer

Method used

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  • Method for grinding plate-like body
  • Method for grinding plate-like body
  • Method for grinding plate-like body

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Embodiment Construction

[0044] Hereinafter, preferred embodiments of the method for polishing a plate-shaped body according to the present invention will be described with reference to the drawings.

[0045] figure 1 A bird's-eye view showing a polishing apparatus 10 to which the method for polishing a plate-shaped object according to the embodiment is applied. figure 2 yes figure 1 The schematic plan view of the grinding apparatus 10 shown shows the content related to the shape, arrangement|positioning, and operation|movement of the grinding tool 12. The polishing apparatus 10 of the embodiment continuously conveys, for example, a glass substrate G for a liquid crystal display having a size of 2200 mm (width) × 2600 mm (length) or more, and passes through a plurality of circular grinding tools 12, 12 ... arranged along the conveying path to the glass. A device for continuous polishing of substrate G.

[0046] Such as figure 1 The surface on the opposite side of the grinding target surface of th...

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Abstract

A method for grinding a plate-like body by means of a rotating grinding tool while moving the plate-like body in a predetermined direction, wherein the direction of rotation of the grinding tool is reversed with a predetermined timing.

Description

technical field [0001] The present invention relates to a method for polishing a flat body, and more particularly, to a method for polishing a flat body by using a polishing device to polish a glass substrate for an FPD (Flat Panel Display) used in liquid crystal displays or the like. Background technique [0002] Glass substrates for FPDs used in liquid crystal displays, etc., are formed by forming molten glass into a plate shape by a glass manufacturing method called a float process, and fine particles on the surface are polished using a continuous polishing device disclosed in Patent Document 1 and the like. The irregularities and corrugations are removed by grinding to produce a thin plate with a thickness of about 0.4 to 1.1 mm that meets the flatness required for glass substrates for liquid crystal displays. [0003] In such a continuous polishing apparatus, as described in Patent Document 2, a glass substrate is generally polished with a polishing pad (polishing tool)...

Claims

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Application Information

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IPC IPC(8): B24B47/12B24B7/24B24B29/00B24B47/16
CPCB24B47/16B24B7/245B24B29/00
Inventor 河内辰朗城山厚
Owner ASAHI GLASS CO LTD