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Scoring wheel

A technology of scoring wheel and inclined surface, which is applied to stone processing tools, fine working devices, manufacturing tools, etc., can solve the problems of blade defect, wear, inability to form long-distance cracks, etc., and achieve the effect of good penetration

Inactive Publication Date: 2018-02-06
MITSUBOSHI DIAMOND IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, when scribing a brittle material substrate with high hardness such as ceramics that is harder than a glass substrate, the scribing wheel made of cemented carbide or PCD is made of tungsten carbide or a bond of diamond particles and cobalt. , so the blade will be chipped, worn and sometimes unable to form long-distance fissures

Method used

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Embodiment Construction

[0027] Hereinafter, the scoring wheel according to the embodiment of the present invention will be described in detail using the drawings. In this embodiment, the brittle material substrate to be processed is a SiC substrate with high hardness, but it is not limited thereto, and may be a glass substrate such as a liquid crystal display panel or a plasma display panel, a single crystal silicon substrate, a ceramic substrate, Brittle material substrates such as sapphire substrates. In addition, the "arithmetic mean roughness Ra" used in the specification of this invention is one of the parameters which express the surface roughness of an industrial product prescribed|regulated by JISB0601.

[0028] The shape of the scoring wheel according to the first embodiment of the present invention will be described. figure 1 (a) is a front view of the scoring wheel of this embodiment viewed from the direction of its central axis, figure 1 (b) is a side view of the scoring wheel. also, ...

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Abstract

The invention provides a scoring wheel, which is excellent in cutting characteristics for a high-hardness brittle material substrate and capable of immediately generating a vertical crack from a scoring beginning position. Inclined surfaces, with V-shaped sections and consisting of monocrystal diamonds or polycrystal diamonds, are formed at the outer periphery of the scoring wheel; and an arithmetic average roughness (Ra) of the inclined surfaces is set below 0.01 microns. Grooves (15a, 15b) with fixed pitches below 8 microns are formed at the portion of a ridge (13) intersected by the inclined surfaces (14a, 14b). The scoring wheel using the diamonds as raw materials can improve the cutting characteristics.

Description

technical field [0001] The invention relates to a scribing wheel suitable for scribing high-hardness brittle material substrates. Background technique [0002] Conventionally, in the manufacturing process of liquid crystal display panels, solar cells, etc., there is a dividing process of a brittle material substrate. In the dividing process, while applying a load in accordance with various conditions such as the material and thickness of the brittle material substrate to the scribe wheel made of cemented carbide, polycrystalline sintered diamond (PCD), etc., the scribe wheel is placed on the brittle material. The surface of the substrate is rotated to form a scribed line, and a vertical crack extending from the scribed line to the thickness direction of the brittle material substrate is formed. Then, the brittle material substrate is divided by applying a predetermined force along the scribed lines of the brittle material substrate to manufacture individual panels and glass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28D5/02B28D5/00B28D1/22
CPCB28D5/022B28D1/225B28D5/0011
Inventor 林弘义
Owner MITSUBOSHI DIAMOND IND CO LTD