JPH0222221Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ceramic abrasive grinding tool for polishing and grinding claws, molded objects made of synthetic resin, wood, metal, etc.

Traditionally, the nails of hands and feet have been sharpened, synthetic resin,
Polishing and grinding tools such as files and whetstones are often used in the process of sanding, grinding, and shaping objects made of wood, metal, etc.

Among these, the most commonly used file is
Mainly used are plate-shaped bodies, rod-shaped bodies, etc. made of high-carbon steel, with countless projections or grooves on the surface having sharp edges. In addition, there are also items that are used in daily life, such as nail sharpening files, which are small tools used to sharpen and shape the nails of feet and hands.

However, since the above-mentioned file is made of metal, although it has high toughness, it has drawbacks such as the blade tends to dull and rust easily with use, and due to these, the grinding characteristics deteriorate significantly. Further, since the blade is formed by a gouged protrusion or an oblique groove formed at an acute angle, the root and groove of the gouged protrusion are also formed at an acute angle, just like the angle of the blade. As a result, the chips generated during abrasive grinding clog the roots and grooves of the gouged protrusions, resulting in a shortcoming such that the abrasive grinding characteristics quickly deteriorate.

This product was developed in view of the above-mentioned drawbacks of conventional metal abrasive grinding tools, and because it is made of ceramic, there is no risk of clogging or rusting.
It is an object of the present invention to provide an abrasive grinding tool with a long life and less deterioration in abrasive grinding characteristics.

Hereinafter, embodiments of the present invention will be explained in detail with reference to the drawings. Fig. 1 shows a flat plate-shaped abrasive grinding tool (hereinafter simply referred to as the grinding tool) 1, which is made of ceramic and has a plurality of through holes 2 extending from the top surface to the bottom surface. There is. Therefore, the edges 2' formed around the through-holes 2 on both the upper and lower surfaces, as shown in cross-section in FIG. In this way, the edges 2' formed by the numerous through holes 2 penetrating both the upper and lower surfaces of the ceramic body have the effect of cutting the object, so the hole diameter, shape, angle, etc. of the through holes 2 are important for the cutting characteristics. Become an element. Therefore, another embodiment of the grinding tool 1a as shown in FIG.
By bending the edge 2'a at a certain curvature, it becomes possible to change the angle of the edge 2'a and to grind the surface to be ground to a predetermined curvature.

Further, as shown in the figure, the through holes 2 and 2a are long holes parallel to each other, and the edges 2' and 2a' forming the grinding blades are formed parallel and wide.

In addition, although not shown in the drawings, numerous through holes are drilled in a rod-shaped body made of ceramic with a rectangular, triangular, circular, etc. By combining these materials, it is possible to create a grinding tool that is most suitable for the material, shape, etc. of the object to be ground.

By the way, the grinding tools 1 and 1a shown in the above embodiment
are made of ceramic, but alumina ceramic,
A ceramic made of silicon carbide, silicon nitride, etc. is sufficient, but if the object to be ground is metal, a ceramic made of zirconia ceramic, which has high hardness, high wear resistance, and great toughness, is sufficient. Optimal. In addition, each ceramic has its own unique color, such as alumina ceramic being white and silicon carbide being black, but various metal oxides may be mixed in as needed to give colors such as red, blue, and yellow. It is also possible to use ceramics as a material.

In addition, the through holes 2, 2 formed in the grinding tools 1, 1a
The hole diameter, distribution density, shape, etc. of a should be optimal depending on the hardness, form, finish roughness, etc. of the object to be ground. As for the angles of ' and 2a', an obtuse angle or about 90 degrees is suitable, except for special cases such as when the object to be ground is soft.

As described above, according to the present invention, a plurality of through holes are drilled in the ceramic body, and the edges formed at the boundary with the surface are used as blades, which is relatively lightweight and prevents rust. Since it has high wear resistance without causing clogging with chips or chips, it is possible to provide a ceramic abrasive grinding tool that has excellent abrasive and grinding properties over a long period of time.

[Brief explanation of the drawing]

FIG. 1A is a perspective view showing a ceramic abrasive grinding tool according to an embodiment of the present invention, and FIG. 1B is a sectional view taken along the line X--X in FIG. 1A. FIG. 2A is a perspective view showing another embodiment of the present invention, and FIG. 2B is a Y--
It is a sectional view taken along the Y line. 1, 1a: abrasive grinding tool, 2, 2a: through hole,
2', 2a': Edge.

Claims (1)

[Scope of utility model registration request] A plurality of elongated through-holes that communicate between the front and back sides are bored in parallel to each other in a ceramic body such as alumina or zirconia that is shaped like a plate or a rod, and at the boundary between the through-holes and the surface of the ceramic body. A ceramic abrasive grinding tool characterized by forming a sharp edge forming a grinding blade with a cutting edge angle of approximately 90° or more, and processing is performed only by the edge.