JPH0112908Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ceramic file suitable for polishing, grinding, cutting, etc. nails, synthetic resins, wood, etc.

Traditionally, to polish the surface of an object, powdered abrasives or abrasives made by mixing powdered abrasives in a sol form in an activator solution have been used. In some cases, or when polishing or grinding is performed with high precision, an abrasive material in which diamond powder is mixed with an organic paste is used. Furthermore, commonly used abrasive grinding members include sandpaper, grindstones, metal files, etc., which are most suitable for the place of use and the material of the object to be polished. Further, when the object to be polished is a steel product or the like, and the object is to be roughly cut, a grinder using a rotating whetstone made of diamond sand is often used.

Among the various tools mentioned above for polishing and grinding workpieces, the most familiar and widely used side paper for small-scale polishing and grinding is inexpensive, but it is attached with adhesive. Since particles such as diamond sand easily fall off with use, it is difficult to maintain the original polishing characteristics constant, and moreover, it is unsuitable as a jig for precision machining. In addition, grindstones are not suitable for grinding highly hard objects because they do not improve work efficiency. Furthermore, the blades of metal files tend to wear out easily, and the grinding properties often deteriorate over a short period of time due to things like chips getting stuck between the blades and rusting. It was.

The present invention was developed in view of the above-mentioned drawbacks of conventional abrasive and grinding tools, and aims to provide an inexpensive, handy-type file that maintains excellent abrasive and grinding properties over a long period of time.

The present invention will be explained in detail below using examples.

FIG. 1 is a plan view of the file A according to the present invention. As shown in FIG. After the ceramic body is crushed, the ceramic particles 2, which are sized and have a substantially uniform particle size, are adhered with an adhesive 3 made of glass or synthetic resin. The base 1 forming the file A is made of a highly rigid ceramic material, and the base 1 is molded into a convex shape with a curvature as shown in Fig. 2b to suit the use. It is often convenient to use. on the other hand,
As a constituent material of the ceramic particles 2 attached to the surface of the substrate 1 with the adhesive 3, silicon carbide (HRA), which has the second highest hardness next to diamond and boron carbide, is used.
Ceramics such as silicon nitride (HRA hardness 91), alumina (Vickers hardness 1300-2300) are sintered and then crushed, and only those with an average particle size within a specified range are collected. However, if particularly fine ceramic particles are required, ceramic raw material powder before firing may be used.

As described above, the average particle size of the ceramic particles 2 attached to the substrate 1 varies depending on the material of the object to be polished (grinded) and the object of work such as polishing or grinding.
Ceramic particles 2 of various particle size ranges are attached to the surface of an alumina ceramic substrate 1 with an adhesive 3 mainly made of glass, although this is largely related to the external shape of the ceramic particles 2, that is, the sharpness. We conducted polishing and grinding experiments on metal materials such as steel and brass, which are the most widely used materials for adhesion, as well as objects made of wood and synthetic resin. The sticky ceramic particles 2 exhibited good polishing and grinding properties and were easy to use.

In addition, the adhesive 3 is usually an organic type such as a synthetic resin based on acrylic, or an inorganic type such as glass or cement that has a melting point of several hundred degrees so that it can be used even in high temperature areas. The adhesive 3 may be used as the adhesive 3.

Furthermore, as other embodiments of the ceramic file A according to the present invention, the cross-sectional shape is rectangular, triangular, or circular, as shown in FIG. It is also possible to produce and use a shape.

The present invention is constructed as described above, and the ceramic particles do not rust and can scrape off the object to be polished with the countless edges they have, and have excellent abrasive and grinding properties over a long period of time. Since it is made of a base body that is durable and has relatively high rigidity, it does not deform during use and can maintain a certain curvature or straightness (flatness), resulting in excellent polishing and It is possible to provide an inexpensive file that has grinding properties and is suitable for precision machining.

[Brief explanation of the drawing]

Figure 1 is a plan view of a file according to an embodiment of the present invention, Figures 2 a and b are diagrams illustrating a cross section taken along the line X-X in Figure 1, and Figure 3 is a cross section of the central part showing another embodiment of the file of the present invention. It is a front view. A, A1, A2, A3: Ceramic file,
1: Substrate, 2: Ceramic particles, 3: Adhesive.

Claims (1)

[Scope of utility model registration request] The average particle size is 0.5 to 2000 μm on the surface of a plate-shaped or rod-shaped substrate made of highly rigid ceramic.
Ceramic file made of ceramic particles.