KR960003850Y1 - Abrasive sheet - Google Patents

Abstract

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Description

Abrasive paper

1 is a plan view showing a part of the abrasive cloth according to a first embodiment of the present invention.

2 is a plan view showing a part of the abrasive cloth according to a second embodiment of the present invention.

3 is a plan view showing a part of the abrasive cloth according to a third embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: base material 2, 2A, 2B: particle mass

The present invention relates to abrasive paper. Conventionally, such conventional abrasive paper is constructed by randomly fixing abrasive particles on a substrate such as cloth or paper in a state close to the most dense filling.

However, when trying to polish a material (also referred to as a work) with a kind of abrasive paper, the normal force (pressing force) applied to the working surface of the work because the abrasive particles are closest to the most dense filling as described above. ) Must be increased. However, when polishing is performed with a large normal force in this way, the lifting blades of the abrasive grains wear out prematurely and wear out, and the abrasive cloth slides on the working surface of the workpiece, which causes the polishing force to decrease. Significantly lowered, the processing accuracy of the work worsened, resulting in poor dimensions.

In addition, since the abrasive cloth slipped on the working surface of the work, there was a drawback in that a stuffy nose was generated due to heat generation and the work burned further.

In order to solve the above problems, the polishing forge according to the present invention is a polishing paper formed by fixing polishing particles as an adhesive on a substrate such as cloth or paper, wherein the polishing particles have a particle diameter of 5 to 400 µm. In the polishing paper which is used, the dense portion is formed by uniformly adhering the above-mentioned portion, and the number of particles per unit area is less than 35% of the number of particles when the abrasive particles are most densely packed on the substrate. It is configured to adhere to the paper material so as to appear uniformly as agglomerates of dots or honeycomb particles.

In the abrasive paper of the present invention, abrasive particles having a particle diameter of about 5 to about 400 µm are fixed at about 35% or less of the particle number when the particle number per unit area is most densely packed. By setting the range, the normal force per grain of the abrasive grains required for polishing of the material can be increased without premature wear and abrasion of the lifting edge of the abrasive grains. The reaction force in the tangential direction with respect to the working surface can be reduced. In addition, by setting the abrasive grains as agglomerate particles having a dot or honeycomb shape, it is possible to easily arrange the abrasive grains prior to the fixation, and at the same time, a spot without spreading over the entire surface of the abrasive cloth. It becomes possible.

EXAMPLE

Next, embodiments of the present invention will be described with reference to the drawings. First, the abrasive cloth according to the first embodiment of the present invention will be described with reference to FIG.

1 is a base material, such as a forge, and the particle | grains 2-2 adhere | attach the dot shape which becomes a some abrasive grain on the upper surface of this base material 1. As shown in FIG.

The particle masses 2 to 2 are arranged at equal intervals, and the particle diameter of each abrasive grain constituting these and the number of sugars per 100 cm ₂ are brittle such as glass, ceramic, gypsum and stone. Diamond grinding particles suitable for grinding of materials are selected from the combination of the following first table, and mainly for alumn-based grinding for grinding wood, drawings, plastics and hard rubber. Particles or silicon carbide-based abrasive particles (general abrasive particles) are used and are selected from the combination of the following second table.

In addition, in the case of metal polishing, mainly aluminum-based polishing particles or silicon carbide-based polishing particles (general polishing particles) are used, and are selected from the combination of the following third table.

TABLE 1

TABLE 2

TABLE 3

Here, in the case of the first table, the minimum value and maximum value of the number of abrasive grains (piece / 100 cm 2) at each particle diameter are the maximum number of abrasive particles (pieces / 100 cm 2) when the most densely packed particles are filled. 2% and 20% respectively.

In the case of the second table, the minimum and maximum values of the number of abrasive grains (piece / 100 cm 2) at each particle diameter are 3.5% of the number of abrasive grains (pieces / 100 cm 2) when the most densely packed particles are filled even more densely. And 28% respectively.

In the case of Table 3, the minimum and maximum values of the number of abrasive grains (piece / 100 cm 2) at each particle diameter are 7% of the number of abrasive grains (pieces / 100 cm 2) in the most densely packed layer. And 35% respectively.

Fig. 1 is a photograph of a photograph taken at a magnification × 4.5 of a state in which polishing particles having a particle diameter of 160 µm and a particle number of 770 particles / 100 cm 2 are fixed on a substrate in a dot state. The average number of abrasive grains that constitutes is 9.5.

As the abrasive grains, in addition to those shown in the above table, any one having a particle diameter of 5 to 400 μm can be used, and the number of abrasive grains (pcs / 100 cm 2) is most densely packed. It is less than 35% of one case.

In addition, the number of abrasive grains constituting each particle lump 2 in the case of being arranged in a dot state as in the present embodiment is at least two, and selecting the lowest number as shown in the following table 4 according to the particle diameter. desirable.

TABLE 4

Since the abrasive cloth of the present embodiment fixed abrasive particles having a particle diameter of 5 to 400 µm to the substrate 1 at 35% or less of the number of particles in the most dense filling, the number of particles per unit area was increased. Knife) With no premature wear and wear of the blade, the normal force per grain can be increased, which is required for material grinding and film formation. Since clogging can be prevented, the machining precision of a workpiece | work improves, and also the burn by a heat | fever can be prevented.

Moreover, since the tangential resistance with respect to a workpiece | work becomes small, detachment from the base material 1 of abrasive grain can be prevented. In addition, in the present embodiment, the abrasive grains are fixed by forming a dot-shaped agglomerate (2) to (2) with respect to the substrate (1), and such a dot-like particle mass (2) to (2). Is a method of applying an adhesive to the substrate 1 in a corresponding dot shape using a jig, and attaching the abrasive particles to the substrate 1 using gravity or static electricity, or the substrate ( A method of applying an adhesive to the entire surface of 1) and attaching the abrasive particles thereon in the form of dots using gravity or static electricity.

Or it can adhere by the method of apply | coating to the base material 1 which mixed the adhesive agent and abrasive grains in the shape of a dot, etc. For this reason, since the mutual space | interval of the particle masses 2-2 and the dimension of the particle mass 2 itself can be set precisely with a very small dimension, setting of the number of particles per unit area becomes easy, and also the particle mass Since (2)-(2) can easily obtain the state disperse | distributed uniformly on the base material 1 without smudge, grinding and polishing with high precision can be performed.

In actual work, the type of abrasive grain is selected according to the kind of material (material, hardness, crystal structure, density, etc.) and grinding conditions, and at the same time, the optimal one is selected from the particle diameter and the number of particles. do.

In addition, the abrasive cloth of this embodiment may be of any form, such as a sheet shape, a disk shape, a belt shape, or the like. Next, the abrasive cloth of the second and third embodiments of the present invention will be described with reference to FIGS. 2 and 3, respectively. In addition, these examples are the same as those of the first embodiment except that the arrangement of the abrasive grains is different, and the particle diameter of the abrasive grains and the number of particles per unit area are set the same as in the first embodiment.

In FIG. 2 showing the second embodiment of the present invention, the abrasive grains are fixed on the base material 1 by forming agglomerate particles 2A in a linear honeycomb form.

FIG. 2 is a picture of a photograph taken at a magnification x 4.5 of a state in which a polishing particle having a particle diameter of 260 µm and a particle number of 970 particles / 100 cm 2 is formed in a honeycomb-shaped linear particle agglomeration. The line width of the particle mass is 4 mm.

In addition, in FIG. 3 showing the third embodiment of the present invention, the abrasive grains are fixed on the substrate 1 by forming a plurality of linear particle agglomerates 2B to 2B parallel to each other.

FIG. 3 is a photograph of a photograph taken at a magnification x 4.5 of a state in which abrasive particles having a particle diameter of 260 µm and a particle number of 1090 particles / 100 cm 2 are formed in a plurality of linear particle masses parallel to each other and fixed to a substrate. In this case, the width of each particle lump line is 4.5 mm.

In addition, in the linear particle agglomerates such as the particle agglomerates 2A and 2B of the above-described second and third embodiments, the width of the line is set to two times or more and 60 times or less of the particle diameter. For example, in the case of using abrasive particles having a particle size of Japanese Industrial Standards 400, the particle diameter is about 40 µm, so that the line width is set in the range of 80 µm to 2,400 µm.

In addition, the particle masses 2A and the particle masses 2B to 2B can be fixed to the substrate 1 in the same manner as in the particle mass 2 of the first embodiment.

In the abrasive paper of the present invention, the grinding force is improved because the normal force per polishing particle required for grinding and polishing of the material can be increased without accommodating premature wear and abrasion of the (blade) blade of the abrasive grain. In addition, since clogging due to heat generation can be prevented, the processing precision of the work can be improved, and further, the work caused by heat can be prevented from burning. Moreover, since the tangential resistance with respect to a workpiece | work becomes small, detachment | emission from the base material of abrasive grain can be prevented. Furthermore, by arranging the abrasive grains as agglomerates of dots, honeycombs, or parallel lines, the number of particles per unit area can be set easily and accurately. It can be produced easily and inexpensively, and furthermore, since the abrasive grains can be uniformly dispersed on the substrate without spots, grinding can be performed with good precision.

Claims (2)

In the polishing paper formed by sticking abrasive particles having a diameter of 5 to 400 µm with an adhesive on a substrate 1 such as cloth or paper so that dense portions and coarse portions appear uniformly. The number of particles per unit area of the molten particles is 2 to 35% of the number of particles when the abrasive grains are filled on the substrate 1 at the highest density, and the dense portion and the coarse portion have a plurality of dots ( Abrasive cloth, characterized in that adhered to show the dot) shape An abrasive paper comprising a polishing particle having a particle diameter of 5 to 400 µm and adhered to a base material such as cloth or paper with an adhesive so that dense and coarse portions appear uniformly. The number of particles per unit area of the molten particles is 2 to 35% of the number of particles when the abrasive grains are filled on the base material 1 at the highest density, and the dense portions and the coarse portions have a plurality of honeycomb shapes. Polishing paper, characterized in that adhered to show.