JPH06278035A - Cutting blade - Google Patents

Abstract

PURPOSE:To reduce or prevent chipping of a subject to be cut that could be caused by dropping of cutting abrasive grains by hardening the cutting abrasive grains using a metal or resin binder, and forming the whole blade into a foaming structure. CONSTITUTION:When abrasive grains 2 made from diamond are hardened using resin or metal as a binder, space 3 is formed with a foaming or fibril structure and a cutting blade 1 is manufactured. When the cutting blade 1 having the foaming or fibril structure is formed using a resin such as phenol, or imide, resin as a binder, a method that comprises mixing a foaming agent in the resin and heating the resin is employed. When the cutting blade having the foaming or fibril structure is formed using a metal such as Fe, Al, Zn and their alloys as a binder, a method that comprises sintering metal powders or metal fibers, or a method that makes use of expansion caused by heating and cooling of a cast iron above and below its transition point several times as in the case of a growing cast iron is employed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting blade used in a precision cutting device such as a dicer or a micro slicer.

[0002]

2. Description of the Related Art Conventionally, as a cutting blade used in the above-mentioned precision cutting device, a solid type having a porosity of 0, which is obtained by hardening diamond with cutting abrasive grains and using a high molecular compound as a binder or a metal. Things are known.

[0003]

However, in the above-mentioned conventional cutting blade, chipping called chipping occurs on the object to be cut when the diamond of the abrasive grains is missing.

[0004]

In order to solve the above problems, the present invention uses a cutting blade itself having a foam structure having a large number of voids or a fibril structure in which fibers are entwined.

[0005]

Since the cutting blade has the foamed structure or the fibril structure, it is possible to reduce chipping of the object to be cut due to the missing abrasive grains entering the space formed in the blade and discharged.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a schematic sectional view of the cutting blade according to the present invention. The cutting blade 1 has a foamed structure or a fibril structure to form a space 3 when the abrasive grains 2 made of diamond are solidified with resin or metal as a binder. As the binder, a high molecular compound such as phenol resin, imide resin, amide resin, vinyl, and fluorine resin, and a mixture or polymer thereof, or Fe, Al, Zn, Cr, Ti, Cu, P
Metals such as b and alloys thereof can be used.

When the resin is used as a binder to form a cutting blade having a foam structure or a fibril structure, a foaming agent is mixed and heated. On the other hand, when a metal is used as a binder for a cutting blade having a foam structure or a fibril structure, for example, a method of sintering metal powder (alloy powder) or metal fibers (alloy fiber), a transformation point of cast iron such as grown cast iron. There are a method of utilizing the expansion phenomenon accompanying repeated heating and cooling up and down, a method of adding a foaming agent to a molten metal for aluminum foam, a method of reducing a metal compound such as sponge iron or titanium, and the like.

Now, specific examples and comparative examples of the cutting blade 1 will be described. Example 1 Abrasive grains 2 having a particle size of 1 to 2 μm were hardened using a phenol resin as a binder to manufacture a cutting blade having a foamed structure with a porosity of 30% and an average bubble diameter of 1.7 μm. Example 2 Abrasive grains 2 having a particle size of 2 to 6 μm were hardened using a phenol resin as a binder to manufacture a cutting blade having a foamed structure with a porosity of 32% and an average bubble diameter of 1.7 μm. Comparative Example 1 A solid (no void) cutting blade was produced by solidifying abrasive grains 2 having a particle size of 1 to 2 μm using a phenol resin as a binder. Example 2 A solid (no void) cutting blade was produced by solidifying abrasive grains 2 having a particle size of 2 to 6 μm using a phenol resin as a binder.

Each of the cutting blades of Examples 1 and 2 and Comparative Examples 1 and 2 had a thickness of 2 inches × 250 μm and a cutting speed of 100 mm / min was used to cut a 4-inch quartz glass wafer having a thickness of 1 mm as a cutting material. . At this time, the same quartz glass was used as a dummy under the material to be cut, and the cutting depth was 1.7 mm. The results are shown in Table 1.

[0010]

[Table 1]

As is clear from this (Table 1), when the cutting blade of the embodiment having the foam structure is used, chipping does not occur, or even if chipping occurs, it is small and its size is small. On the other hand, when the cutting blade of the comparative example is used as the solid structure, a considerable number of large chippings occur.

[0012] This is because when the foamed structure or fibril structure is used, the missing diamond abrasive grains that cause chipping (breaking) enter the space (bubbles) of the cutting blade and are carried to the outside of the cut object, so that the chipping occurs. Is less likely to occur.

[0013]

As described above, according to the present invention,
Since the cutting blade has the foamed structure or the fibril structure, it is possible to prevent the occurrence of chipping on the object to be cut or reduce the generated chipping.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a cutting blade according to the present invention.

[Explanation of symbols]

 1 ... Cutting blade, 2 ... Diamond abrasive grains, 3 ... Bubbles.

Claims (2)

[Claims] 1. A cutting blade comprising diamond as cutting abrasive grains, which is characterized in that the cutting abrasive grains are hardened with a metal or resin binder and the entire blade has a foamed structure. 2. A cutting blade using diamond as cutting abrasive grains, characterized in that the blade is formed by solidifying the cutting abrasive grains with a metal or resin binder and the entire blade has a fibril structure.