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Blade for cutting instrument having edge of micro-sized uneven form, and cutting instrument having blade

A cutting tool and cutting edge technology, applied in the field of cutting instruments, can solve the problems of wear of the protrusion of the blade, difficulty in providing cutting feeling, decreased cutting performance, etc., and achieve the effect of maintaining cutting force, excellent cutting feeling, and reducing manufacturing costs.

Inactive Publication Date: 2017-08-22
詹姆斯·康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the sawtooth-shaped blade based on steel (steel) including stainless steel is manufactured through a machining process, and the interval between the manufactured sawtooth is usually 0.1 mm or more, thus it is difficult to provide a sharp cutting feeling and improve the quality of the blade. process cost, and there is also the problem of durability reduction as mentioned above
In addition, once the sawtooth shape formed on the blade is damaged, the force concentration shape will be reduced, resulting in a problem that the cutting performance will be significantly reduced.
[0008] In addition, it is also possible to use a rough abrasive to roughen the blade edge in contact with the workpiece to obtain an effect similar to that of the serrated blade, but the protruding edge of the blade processed by such a roughening process wears out very quickly and therefore only temporarily provides an effect similar to the case with a serrated edge

Method used

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  • Blade for cutting instrument having edge of micro-sized uneven form, and cutting instrument having blade
  • Blade for cutting instrument having edge of micro-sized uneven form, and cutting instrument having blade
  • Blade for cutting instrument having edge of micro-sized uneven form, and cutting instrument having blade

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Embodiment

[0045] Usually, it can be produced by a powder metallurgy method in which hard particles such as tungsten carbide (WC) are added to a molten metal, stirred and then cooled, or hard particles and particles constituting a metal matrix are mixed and then sintered.

[0046] However, in the examples of the present invention, a special point is that a substance of a specific composition alloyed in a molten state is used.

[0047] The composition range of the alloy used in the example of this invention has the composition of the following Table 1.

[0048] 【Table 1】

[0049] Element Fe Cr Si B Content (mass%) 45～55 40～50 Below 10 5 or less

[0050] When an alloy having the above-mentioned composition is melted and then cast and left to cool, a composite material is formed in which chromium (Cr) included in the alloy reacts with boron (B) during solidification to form boride Chromium (Crboride), and the rest form the matrix structure of stainless steel...

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Abstract

The present invention relates to a blade for a cutting instrument having serrations, and a cutting instrument having the blade. According to the present invention, the blade for a cutting instrument allowing, at an edge part coming in contact with a material to be cut, hard particles constituting a composite to have a relatively protruding form compared to that of a metal matrix, during a manufacturing process or a use process, thereby having a micro-uneven form.

Description

technical field [0001] The present invention relates to a blade for a cutting tool provided with a micro-sized concave-convex edge, and a cutting instrument provided with the blade. Background technique [0002] Most cutting tools are made of steel (steel) or ceramic (ceramic) having a uniform structure. [0003] Among them, in the case of steel, because it is too soft, there is a tendency that the blade part is easily damaged during use, so it is troublesome to grind the blade frequently during use, and on the contrary, in the case of ceramics, Although hard, the brittleness (brittleness) is too high and brittle, so the durability is not good enough. [0004] In addition, as a method for effectively improving the sharpness of a blade in a cutting tool, there is a method of forming the shape of the edge of the blade in a sawtooth shape as disclosed in the following patent documents. [0005] A blade having a serrated blade can reduce the area in contact with the material t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26B9/02B23B27/14B23B27/08
CPCB26B9/02B23B27/005B23B27/08B23B27/148B23B2222/44
Inventor 詹姆斯·康
Owner 詹姆斯·康
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