TW201924865A - Three-dimensional structure grindstone and manufacturing method therefor - Google Patents

Abstract

A three-dimensional structure body (2) such as a honeycomb structure body is formed from grindstone sheets each having a structure in which a plurality of abrasive grains (11) are disposed on a sheet (21). As a result, the abrasive grains (11) are dispersed on walls of the three-dimensional structure body (2). A space in the three-dimensional structure body (2), that is, a space between the sheets (21) serves as a chip pocket when polishing or grinding.

Description

Three-dimensional structure grinding stone and manufacturing method thereof

The invention relates to a three-dimensional structure grinding stone and a manufacturing method thereof.

In order to grind or grind the grinding object or grinding object (hereinafter referred to as grinding and grinding object) (hereinafter referred to as grinding and grinding), a grinding sheet or grinding sheet (hereinafter simply referred to as grinding and grinding blade) is used material). Grinding/grinding sheet consists of a sheet-shaped base material and abrasive particles fixed on the base material.

Grinding/grinding sheet performance is greatly affected by the characteristics of abrasive particles. In order to give full play to the grinding and grinding performance of the sheet, how the abrasive grains are arranged and fixed on the substrate becomes an important factor.

In particular, in order to precisely polish and grind the polishing/grinding object, the arrangement of abrasive particles such that the abrasive particles are fixed to the substrate in a state of aggregation is not good. If the abrasive particles are aggregated, the surface roughness of the grinding/grinding sheet is inconsistent, and only poor grinding/grinding can be achieved, such as scratches on the surface of the grinding/grinding object.

Therefore, someone designed a grindstone that tried to make the particle size of the abrasive particles uniform and fix the abrasive particles in a single layer (Patent Document 1).

However, in this grinding/grinding sheet, since the layer of abrasive particles is a single layer, there is a disadvantage that the service life is not long. In order to make up for this shortcoming, some people have designed the following grindstone: the abrasive grain layer is multi-layered, and air holes are arranged between the abrasive grains to constitute a collection place for cutting dust (Patent Document 2). The abrasive sheet described in Patent Document 2 has a plurality of abrasive grain layers, and the porosity (volume ratio of the pores in the abrasive grain layer) as pores functioning as a cutting chip storage space is 3 to 40%. [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 60-80562 [Patent Document 2] Japanese Patent Laid-Open No. 2002-166370

[Problems to be solved by the invention]

The abrasive sheet described in Patent Document 2 has a porosity of 3 to 40%. However, in order to improve the grinding and grinding performance, it is necessary to make the chip storage space larger.

The present invention has been completed in view of the above-mentioned facts, and an object thereof is to provide a grindstone with a larger storage space for cutting chips and arranged with multiple layers of abrasive grains, and a method for manufacturing the same. [Means to solve the problem]

In order to achieve the above object, the three-dimensional structure grindstone of the present invention is composed of: a three-dimensional structure composed of a sheet; and a plurality of abrasive grains fixed to the sheet and arranged in the thickness direction of the three-dimensional structure.

The three-dimensional structure is composed of, for example, a honeycomb structure composed of the sheet.

In this sheet, for example, a plurality of openings are formed, and abrasive grains are arranged in the openings.

On the sheet, the arrangement interval of the abrasive particles is, for example, 2 to 50 times the average particle diameter of the abrasive particles.

The sheet has a thickness of, for example, 10 to 1000 μm, and is composed of any one of resin, paper, metal, and cloth.

In this three-dimensional structure, for example, a plurality of through-holes having a hole diameter of 1 to 20 mm are provided between the plurality of sheets.

In order to achieve the above object, the method for manufacturing a three-dimensional structure grindstone of the present invention includes: a step of arranging abrasive particles on one or a plurality of sheets; and a step of forming a three-dimensional structure from one or a plurality of sheets provided with abrasive particles .

The step of forming the three-dimensional structure includes, for example, a step of facing the plurality of sheets at intervals.

The step of arranging abrasive grains on the sheet includes, for example, forming a size of 1/4 to 3 on the sheet at intervals of 2 to 50 times the average grain diameter of the abrasive grains The step of the opening of /4; and the step of arranging abrasive grains in the opening. The present invention does not need to include all of the above-mentioned technical features, but may also include a part or a combination of parts. [Effect of invention]

According to the three-dimensional structure grindstone of the present invention, since abrasive particles are arranged on the three-dimensional structure, the abrasive particles can be arranged in a plurality of layers. In addition, by forming a three-dimensional structure from sheets, a portion between sheets can function as a cutting chip storage space, and a grindstone having a large opening ratio of the cutting chip storage space can be obtained. In addition, according to the method for producing a three-dimensional structure grindstone of the present invention, a three-dimensional structure grindstone capable of obtaining the above-mentioned effects can be produced.

The three-dimensional structure grindstone of the embodiment of the present invention and the method for manufacturing the same will be described below. As shown in FIG. 1, the three-dimensional structure grindstone 1 of the present embodiment is used to grind or grind a grinding object or a grinding object (hereinafter referred to as grinding and grinding object) (hereinafter referred to as grinding and grinding). The three-dimensional structure grindstone 1 has a three-dimensional structure, and makes the polishing surface or grinding surface (hereinafter referred to as polishing･grinding surface) 1a against any arbitrary grinding･grinding object 100 to grind･grinding･grinding object 100. The polishing/grinding object 100 may be any type of polishing/grinding object, mechanical parts, etc., such as arbitrary disk substrates, silicon wafers, glass substrates for display devices, and lenses. In addition, in FIG. 1, the polishing/grinding object 100 is exemplified by a sphere.

The three-dimensional structure grindstone 1 includes a base material 2 having a honeycomb structure and a plurality of abrasive particles fixed to the base material 2 (not shown in the first figure). The substrate 2 having a honeycomb structure is an example of a three-dimensional structure.

The base material 2 is composed of a honeycomb structure having a honeycomb structure, and its wall surface extends in a direction perpendicular to the polishing surface or the grinding surface 1a. In addition, an XYZ orthogonal coordinate system is set, in which the grinding/grinding surface 1a is used as the X-Y plane and the vertical direction is used as the Z-axis direction, which can be appropriately referred to. As shown in FIG. 2, plural abrasive grains 11 are fixed on the wall surface. The abrasive grains 11 are arranged in plural layers in the Z direction, that is, the direction perpendicular to the grinding/grinding surface 1a.

The base material 2 is, as schematically shown in FIG. 3, composed of a combination of plural sheets 21, and its entirety has a honeycomb structure. Each sheet 21 functions as a wall surface of a honeycomb structure. The hollow portion 21a of the honeycomb structure constitutes a through hole penetrating from one surface (grinding/grinding surface 1a) of the base material 2 to the other surface. The diameter D of the hollow portion 21a of the honeycomb structure is set to 1 to 20 mm. In addition, the diameter D of the hollow portion 21a of the honeycomb structure refers to the diameter D of the outer circle 41 of the polygon constituting the honeycomb structure as illustrated in FIG. 4. In addition, the height T of the base material 2 is, for example, 1 to 30 mm. In addition, the polygon of the honeycomb structure in FIG. 4 shows an example of a regular hexagon.

Each sheet 21 is bent and deformed, for example, as shown in FIG. 5. As shown in FIG. 3, the sheets 21 are staggered and fixed to each other to form a base 2 of a honeycomb structure. The thickness of each sheet 21 is, for example, 10 to 1000 μm, and the material may be any of resin, paper, metal, and cloth. Specifically, the sheet 21 is formed of resin such as polyethylene terephthalate, cloth such as woven cloth or non-woven cloth, metal such as paper or aluminum.

In each sheet 21, openings 21b are regularly formed at regular intervals, and as shown in FIG. 6, abrasive grains 11 are arranged in the openings 21b to be fixed. The abrasive particles 11 are composed of fine particles of inorganic abrasive materials such as alumina, silica, diamond, or grinding materials.

The abrasive grains 11 are preferably arranged in such a manner that they are parallel to the side of the grinding/grinding surface 1a constituting the sheet 21 (line AA in FIG. 6) and the crossing angle θ is 30° to 60°, preferably 45 °. The interval between the openings 21b, that is, the interval between the abrasive particles 11 is preferably 2 to 50 times the average particle diameter of the abrasive particles 11. In addition, the particle diameter of the abrasive grain 11 corresponds to the diameter of the ball other than the abrasive grain 11.

In FIG. 7, as shown in the cross-section taken along line A-A in FIG. 6, the abrasive grains 11 are arranged in the opening 21 b of the sheet 21, and the adhesive layer 12 is formed around the opening 21 b. The next layer 12 is a layer of adhesive such as resin. Starting from above the adhesive layer 12, a metal plating layer can also be arranged. Alternatively, the main body of the adhesive layer 12 may be used as a metal plating layer.

In this way, the three-dimensional structure grindstone 1 of the present embodiment is composed of the sheet 21 (that is, the flake grindstone) in which the abrasive grains 11 are regularly arranged on the surface. In the three-dimensional structure grindstone 1, the plural abrasive grains 11 illustrated in FIG. 2 are stacked. Therefore, the abrasive particles are dispersed in the wall of the honeycomb structure. By using the X-Y section of the three-dimensional structure grindstone 1 as the grinding and grinding surface, a grindstone with a long service life can be obtained.

In addition, the hollow portion 21a (that is, the gap portion of the sheet 21) disposed between the abrasive grains 11 is a through-hole, which functions as a storage space for cutting chips during grinding and grinding, and can smoothly discharge cutting chips.

Next, an example of a method for manufacturing the three-dimensional grindstone 1 having the above-described structure will be described. First, the abrasive grains 11 and the sheet 21 corresponding to the application are prepared. Next, the openings 21b are formed on the sheet 21 at equal intervals. The method of forming the opening 21b may be any. For example, the laser beam having a predetermined control mechanism may intermittently irradiate the sheet 21 to form the opening 21b. Also, the opening 21b may be formed by moving the plural needles up and down and left and right. In addition, the initial size of the opening 21b is preferably 1/4 to 3/4 of the average particle diameter of the abrasive grains 11, more preferably about 1/2.

Next, as shown in FIG. 6, the abrasive grains 11 are fitted into the openings 21b formed in the sheet 21. Specifically, the sheet 21 forming the opening 21b is unfolded in the horizontal direction, vibrated while giving a slight tension, and the abrasive grains 11 are dispersed thereon to fit the abrasive grains 11 into the opening 21b. After that, the excess abrasive particles 11 are removed with a broom or the like.

Next, in order to securely fit the abrasive particles 11 into the opening 21b, for example, the sheet 21 is pressed with a flat plate or the like, and as shown in FIG. 7, it is pressed to a height of 1/2 of the average abrasive particle size. Next, the adhesive is applied to the abrasive particles 11 and the sheet 21 to form the adhesive layer 12, and as shown in FIG. 7, the abrasive particles 11 are securely fixed to the sheet 21.

Next, the plurality of sheets 21 to which the abrasive grains 11 are fixed form a three-dimensional structure. The structure of the three-dimensional structure and the method of forming itself may be arbitrary. The following is an example of the case where the polygon of the honeycomb structure is the regular hexagonal honeycomb structure illustrated in FIG. 4.

First, as shown in FIG. 8, in the first sheet 211 where the abrasive grains 11 are fixed, an adhesive tape 31 is formed in parallel with an interval of 3･Wa, and the width Wa of the adhesive tape 31 is equivalent to a regular hexagon forming a predetermined honeycomb structure. The length L1 of one side (step 1).

On the first sheet 211, a second sheet 212 having the same configuration as the sheet 211 is stacked. At this time, the adhesive tape 31 of the second sheet 212 is positioned at the center of the adhesive tape 31 of the first sheet 211, and the adhesive tapes 31 of the two sheets are overlapped in parallel (step 2). After that, as shown in FIG. 9, n sheets are overlapped.

After that, the laminated sheets 211 to 21n are cut to an appropriate size.

After the adhesive of the adhesive tape 31 is cured, as shown in FIG. 9, the first sheet 211 and the n-th sheet 21n are stretched in parallel in the stacking direction to deform each sheet 21 (step 3). By this deformation, each sheet 21 is adjusted to the shape illustrated in FIG. 5. Thereby, as illustrated in FIG. 10, a honeycomb structure composed of sheets 211 to 21n is formed. At this time, for example, the frame plate may be fixed to the upper surface of the laminated sheet 21n and the lower surface of the sheet 211, and the frame plate may be stretched.

Next, electroless plating or electroplating is performed to fix the abrasive particles 11 to the wall surface of the honeycomb structure formed by the sheet 21 more firmly. The abrasive particles 11 are immersed in the electrolytic solution for electroplating, whereby the abrasive particles 11 can be electrically attached to the wall (sheet 21) of the honeycomb structure. In addition, in the case where the abrasive grains 11 are fixed to the sheet 21 with a resin such as an adhesive, the plating step may be eliminated.

Finally, as shown in FIG. 11, the frame 22 may be arranged around the three-dimensional structure grindstone 1.

In this way, it is possible to manufacture a three-dimensional structure grindstone 1 formed by a layer having a thickness and abrasive grains 11 in the Z direction being laminated and functioning as a cutting chip storage space through the one side to the other side in the stacking direction .

In addition, the present invention is not limited to the above-mentioned embodiment, and various modifications and applications are possible. For example, in the above embodiment, a honeycomb structure having a hexagonal cross section is exemplified, but the shape of the cross section may be any, and may be triangular, quadrangular, pentagonal, heptagonal, or more. In addition, the formation method of the honeycomb structure may be arbitrary. For example, a tube formed from the sheet 21 may be combined to form a honeycomb structure.

In addition, the three-dimensional structure of the sheet grindstone constituting the three-dimensional structure grindstone 1 is not limited to the honeycomb structure. It is also possible to fold one or more pieces to form a three-dimensional structure. Although not particularly limited, the preferred structure is as follows: i) the three-dimensional structure is composed of a plurality of sheets, ii) has a composition in which the plurality of sheets are opposed to the grinding, and the grinding surface extends in the vertical direction, and iii) is arranged separately through the space A plurality of sheets, and the space functions as a storage space for cutting chips, iv) a plurality of abrasive grains are fixed to each sheet, v) polishing, and multiple layers of abrasive grains are stacked on the grinding surface. In addition, each sheet may not necessarily be perpendicular to the grinding/grinding surface, as long as it has a component that extends in a direction perpendicular to the grinding/grinding surface. Moreover, it is preferable to arrange a plurality of abrasive grains fixed to the sheet in a direction perpendicular to the grinding/grinding surface, that is, to arrange multiple abrasive grain layers.

In addition, in the three-dimensional structure grindstone 1, the material/size of the three-dimensional structure, the material and the size of the abrasive grains can be applied to the grinding/grinding stone for various fields.

Although the example in which the three-dimensional structure grindstone 1 grinds or grinds an object is described, it can also be applied to the application of the three-dimensional structure grindstone 1 to grind while grinding the object, that is, the use of grinding and grinding.

As long as the present invention does not depart from the broad spirit and scope of the present invention, various embodiments and modifications can be made. In addition, the above-mentioned embodiment is for explaining the present invention, but does not limit the scope of the present invention. That is, the scope of the present invention is not indicated by the implementation mode, but by the scope of patent application. Moreover, various modifications implemented within the scope of the patent application and the scope of the invention equivalent thereto are deemed to be within the scope of the present invention.

This application is based on Japanese Patent Application No. 2017-204001 filed on October 3, 2017. In this specification, the specification of Japanese Patent Application No. 2017-204001, the scope of patent application, and the drawings as a whole are referred to and cited.

1‧‧‧ Three-dimensional structure grinding stone

1a‧‧‧grinding or grinding surface

11‧‧‧Grit

12‧‧‧Next layer

2‧‧‧ Base material

21‧‧‧ Sheet

21a‧‧‧Hollow Department

21b‧‧‧Opening

211~21n‧‧‧sheet

212‧‧‧Second sheet

22‧‧‧frame

31‧‧‧ Adhesive tape

100‧‧‧Grinding･Grinding object

D‧‧‧Diameter

L1‧‧‧Length

T‧‧‧Altitude

Wa‧‧‧Width

θ‧‧‧cross angle

[Figure 1] This is a diagram showing a three-dimensional structure grindstone according to an embodiment of the present invention. [Figure 2] This is a diagram of the grinding and grinding surface of the three-dimensional structure grindstone shown in Figure 1. [Figure 3] This is a diagram showing the arrangement structure of the sheets constituting the base material of the three-dimensional grindstone shown in Figure 1. [FIG. 4] It is a figure for demonstrating the diameter of the hollow part of the honeycomb structure in the base material of the three-dimensional grindstone shown in FIG. [Figure 5] A diagram showing the structure of the sheet shown in Figure 3. [Figure 6] This is a diagram illustrating the arrangement of abrasive grains on the sheet shown in Figure 3. [Fig. 7] A diagram exemplifying abrasive grains fixed to the sheet shown in Fig. 6. [FIG. 8] It is a figure for demonstrating the manufacturing process of the three-dimensional structure grindstone shown in FIG. 1, It is a top view which illustrates the sheet|seat in which the adhesive tape was formed. [FIG. 9] It is a figure for demonstrating the manufacturing process of the three-dimensional structure grindstone shown in FIG. 1, which is a figure which illustrates the process of forming a honeycomb structure from the laminated sheet. [Fig. 10] A diagram illustrating a honeycomb structure formed by the steps shown in Fig. 9. [Figure 11] This is a plan view of a three-dimensional structure grindstone in which a frame body is arranged around.

Claims (9)

A three-dimensional structure grindstone is composed of a three-dimensional structure body and abrasive particles; the three-dimensional structure system is composed of a sheet; the abrasive particles are fixed to the sheet and multiple layers are arranged in the thickness direction of the three-dimensional structure body. The three-dimensional structure grindstone as described in item 1 of the patent application scope, wherein the three-dimensional structure body is composed of a honeycomb structure body composed of the sheet material. The three-dimensional structure grindstone as described in item 1 or 2 of the scope of the patent application, wherein a plurality of openings are formed in the sheet, and the abrasive particles are arranged in the openings. The three-dimensional structure grindstone as described in item 1 or 2 of the patent application scope, wherein the interval of the abrasive grains on the sheet is 2 to 50 times the average particle diameter of the abrasive grains. The three-dimensional structure grindstone as described in item 1 or 2 of the patent application, wherein the thickness of the sheet is 10 to 1000 μm, and it is composed of any one of resin, paper, metal, and cloth. The three-dimensional structure grindstone as described in item 1 or 2 of the patent application range, wherein the three-dimensional structure body has a through hole with a hole diameter of 1 to 20 mm between the plurality of sheets. A method for manufacturing a three-dimensional structure grinding stone includes: a step of disposing abrasive grains on one or a plurality of sheets; and a step of forming a three-dimensional structure body from one or a plurality of the sheets provided with the abrasive grains. The method for manufacturing a three-dimensional structure grindstone as described in item 7 of the scope of the patent application, wherein the step of forming the three-dimensional structure includes the step of facing the plurality of sheets at intervals. The method for manufacturing a three-dimensional structure grindstone as described in item 7 or 8 of the scope of the patent application, wherein the step of arranging the abrasive grains on the sheet includes: 2 to 2 of the average grain size of the abrasive grains on the sheet The step of forming an opening having a size of 1/4 to 3/4 of the average particle diameter of the abrasive grains at intervals of 50 times; and the step of arranging the abrasive grains in the plural openings.