Fragile material cutter, line drawer therewith and method therefor

A technology of brittle materials and brittle material substrates, which is applied in the field of glass cutting knives, can solve the problems that the part of the cutting starting point cannot be cut correctly, the glass has missing corners, etc., and achieve the effect of eliminating the empty cutting phenomenon

Inactive Publication Date: 2002-03-06
MITSUBOSHI DIAMOND IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] If an effective vertical crack cannot be obtained at the starting point of the scribing line, for example, when the glass plate is cut by applying bending stress, the part of the cutting starting point cannot be cut correctly, and the glass will have a part with missing corners, etc. bad situation

Method used

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  • Fragile material cutter, line drawer therewith and method therefor
  • Fragile material cutter, line drawer therewith and method therefor
  • Fragile material cutter, line drawer therewith and method therefor

Examples

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Embodiment Construction

[0050] figure 1 It shows the cross-sectional structure of the glass cutter 1 which concerns on the 1st Example of this invention. The glass cutter 1 is composed of the following two parts:

[0051] 1. The body part 1a constituted by the cylinder body 2;

[0052] 2. The cutter head 1b is rotatably attached to the holder 4 with the cutter wheel 3 made of, for example, a tungsten alloy.

[0053] The shaft 6 provided on the holding part 4 passes through the shaft supporting part 7 installed on the lower end of the cylinder body 2, so that the cutter head 1b can slide in the up and down direction. The upper end of the shaft 6 has a rivet-shaped head 8 to prevent the shaft 6 from falling off from the shaft supporting portion 7 .

[0054] In addition, as described later in the present invention, when scribing, the glass cutting knife is used to push the shaft 6 and the cutter head 1b upward into a predetermined amount, and exerts an impact force on the cutter head 1b, so the shaf...

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PUM

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Abstract

A fragile material cutter comprises an edge for cutting fragile material, a support shaft for the edge and a tube for accepting the support shaft, the cutter is characterized in that the tube provided with a trigger mechanism and an impact mechanism inside is disposed to hold the support shaft for sliding backward and forward. The invention also relates to a scriber for cutting a circularity on the fragile substrate, and the cutter head which can move vertically has a edge for cutting. The cutter head is pressed with a certain distance by the pressure of a helical spring below and is released momentarily by the trigger mechanism to cause a impact on the edge. The object of the present invention is to overcome the problem that a perpendicular crack effective in terms of a scribing start point is not obtainable because of the difficulty in setting a suitable scribing pressure from the beginning of the start of scribing.

Description

technical field [0001] The present invention relates to a cutting knife for cutting brittle materials, in particular to a cutting knife for cutting glass. Background technique [0002] First, the cutting of brittle materials will be explained using glass as an example. Among the methods for cutting glass, the following methods are widely used. That is to say, one method is to use a diamond cutter with a diamond blade or a wheel cutter made of superhard alloy to cut (mark) the glass surface, so that a crack is generated near the glass, and a bending moment or impact force is applied along the crack etc. to cut the glass by allowing cracks to grow inside the glass. [0003] For example, Figure 18 It shows the situation when a crack is generated in the glass plate 101 by the glass cutter 100 with a cutter wheel. After the cutter wheel 3 made of cemented carbide is pressed on the glass surface, once the pressing pressure exceeds the critical value of stress and strain of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B33/10
CPCB26D3/085C03B33/033C03B33/037C03B33/10Y02P40/57
Inventor 仓本俊司曾山浩阪口良太小笠原规幸羽阪登
Owner MITSUBOSHI DIAMOND IND CO LTD
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