JPH0722898B2 - Whetstone - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grindstone particularly suitable for cutting or grinding difficult-to-cut materials such as silicon, ceramics, and glass.

<Prior Art> As is well known, in order to achieve high-speed cutting or grinding of difficult-to-cut materials, it is important to use a grindstone that has a high heat dissipation effect and does not cause so-called clogging. From this point of view, in JP-A-52-72988 and JP-A-56-116166, superabrasive grains such as synthetic or natural diamond abrasive grains or cubic nitrogen boron abrasive grains are electro-deposited on a reticulated substrate. A whetstone formed by wearing is disclosed.

More specifically, the grindstone disclosed in Japanese Patent Laid-Open No. 52-72988 is such that a mesh base made of foamed synthetic resin such as urethane foam is coated with a metal plating layer such as nickel, and a metal such as nickel is further added. Is formed by electrodeposition of superabrasive grains using the plating of as a binder. on the other hand,
The grindstone disclosed in Japanese Utility Model Laid-Open No. 56-116166 discloses a superabrasive layer electroplated on a metal-made reticulated substrate such as copper or brass by directly using a metal plating such as nickel as a binder. It is formed by wearing.

<Problems of the Prior Art and Problems of the Invention> However, the above-described conventional grindstone has the following problems to be solved.

When the reticulated base is made of a foamed synthetic resin, the strength and heat resistance of the reticulated base are remarkably insufficient, and the grindstone is damaged due to the load during cutting or grinding or the heat generated during cutting or grinding causes Thermal deformation tends to occur. Even when the mesh base is made of a metal, the strength of the mesh base is still insufficient, and the grindstone may be damaged due to a load during cutting or grinding. Further, when the mesh base is made of metal, the specific gravity of the grindstone is high because the metal has a high specific gravity, and due to this, the energy loss during cutting or grinding is relatively large.

The present invention has been made in view of the above facts, and its technical problem is to sufficiently increase the strength and heat resistance of the grindstone by sufficiently lowering the specific gravity of the grindstone, and thus the above-mentioned problems in the conventional grindstone. It is to solve.

<Means for Solving the Invention> A means for solving the present invention is to form a reticulated substrate containing carbon fiber or glass fiber as a main material.

That is, according to the present invention, there is provided a grindstone characterized by including a net-like base body composed mainly of carbon fibers or glass fibers and an abrasive grain layer electrodeposited on the net-like base body.

In a preferred embodiment of the present invention, a metal plating layer is applied to the mesh substrate, and the abrasive grain layer is electrodeposited on the mesh substrate via the metal plating layer.

<Operation of the Invention> Carbon fiber and glass fiber have a specific strength (a value obtained by dividing the strength at the breaking point by the specific gravity) as compared with foamed synthetic resin, metal and the like.
Is extremely high, and also has excellent heat resistance. Therefore, according to the grindstone of the present invention in which the net-like substrate is formed by using carbon fiber or glass fiber as a main material, the specific gravity can be made sufficiently low and sufficient strength and heat resistance can be obtained.

<Preferred Specific Example of the Invention> Hereinafter, one specific example of the grindstone configured according to the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 illustrates an example of a mesh substrate used to form one embodiment of a grindstone constructed in accordance with the present invention. The mesh substrate shown in the figure as a whole is disc-shaped as a whole, and a circular opening 4 is formed in the center. The reticulated base 2 is constructed by so-called plain weaving a number of strips 6 extending substantially parallel to each other and a number of strips 8 extending substantially perpendicular to the strips 6 and substantially parallel to each other. Has been done. Therefore, the large number of rectangular openings present between the strips 6 and 8
Having 10. As shown in FIG. 2, it is important that each of the strips 6 and 8 is formed of a large number of carbon or glass fibers as a main material. In the illustrated embodiment, each of the strips 6 and 8 is formed by securing a number of substantially parallel carbon or glass fibers 12 to each other with a suitable synthetic resin such as an epoxy resin. In order to avoid some loss of heat resistance due to the fixing synthetic resin and also to the reduction of conductivity due to the fixing synthetic resin in the case where the fiber 12 is a carbon fiber, a large number if desired. Carbon or glass fibers can also be twisted together to form each of the strips 6 and 8. Examples of preferred fibers for forming the strips 6 and 8 are carbon fibers sold under the trade name "Carboron" or "Nicalon" by Japan Carbon Co., Ltd., or under the trade name "Pyrofil" by Mitsubishi Rayon Co., Ltd. Mention may be made of carbon fibers such as those sold on the market.

In the preferred embodiment of the present invention, as shown in FIG. 3, a plating layer 14 of a metal such as nickel is applied to the surface of the mesh substrate 2. The plating layer 14 is formed on the mesh base 2
If it has sufficient conductivity, it can be applied by a well-known electrolytic plating method, and if the mesh substrate 2 does not have sufficient conductivity, it can be applied by a well-known non-electrolytic plating method. The metal plating layer 14 may be omitted, in particular if the mesh base 2 has sufficient conductivity, in which case the strips 6 and 8 will be formed when performing cutting or grinding with the finished grindstone. The so-called fluff tends to be generated by rubbing the carbon or glass fibers 12 that are being rubbed.

As shown in FIGS. 4 and 5, in the illustrated embodiment, after the metal plating layer 14 is applied, the abrasive grain layer 16 is electrodeposited on both side surfaces of the peripheral portion of the reticulated base body 2, and thus the grindstone 18 is formed. Will be completed. The electrodeposition of the abrasive grain layer 16 can be performed by a known electrodeposition method in which the abrasive grains are fixed while electrolytically plating a metal such as nickel. The abrasive grain layer 16 formed by such an electrodeposition method includes the metal plating layer 20 and the abrasive grains 22 at least partially embedded therein. Abrasive grain 22 may be a superabrasive grain such as a natural or synthetic diamond grain or a cubic boron nitride grain. Grain size and concentration of abrasive grain 22 and abrasive grain layer 16
The layer thickness and the like can be appropriately set depending on the purpose of use of the grindstone 18.

Thus, the whetstone 18 in which the reticulated substrate 2 has a disc shape as a whole, and the abrasive grain layer 16 is electrodeposited on the outer peripheral edge of the grindstone 18, has been described in detail. Of the net-like substrate, or a grindstone in which an abrasive grain layer is electrodeposited on the inner peripheral edge adjacent to the opening formed in the central part of the net-like substrate, or at least a part of the endless belt-like or sheet-like net-like substrate The present invention can be applied to a grindstone in any form, such as a grindstone in the form of electrodeposition.

<Effects of the Invention> In the grindstone constructed according to the present invention, the reticulated substrate is formed by using carbon fiber or glass fiber having a remarkably high specific strength and excellent heat resistance as a main material, and therefore according to the present invention. The grindstone constructed has sufficient strength and heat resistance, there is almost no possibility of breakage or thermal deformation during cutting or grinding, and also the specific gravity is sufficiently low, energy loss during cutting or grinding. Is small.

[Brief description of drawings]

FIG. 1 is a plan view showing a reticulated substrate in a specific example of a grindstone constructed according to the present invention. FIG. 2 is an enlarged perspective view showing a part of the mesh base body of FIG. FIG. 3 is a perspective view similar to FIG. 2, showing a partially enlarged view of a state in which a metal plating layer is applied to the mesh base body of FIG. 1. FIG. 4 is a plan view showing a specific example of a grindstone constructed according to the present invention. FIG. 5 is a perspective view similar to FIG. 2, showing a part of the grindstone of FIG. 4 in an enlarged manner. 2 ... Reticulated substrate 6 and 8 ... Strip 12 ... Carbon or glass fiber 14 ... Metal plating layer 16 ... Abrasive grain layer 18 ... Grindstone

Claims (2)

[Claims] 1. A net-like substrate comprising carbon fibers or glass fibers as a main material, and an abrasive grain layer electrodeposited on the net-like substrate.
A whetstone characterized by that. 2. The method according to claim 1, further comprising a metal plating layer applied to the mesh substrate, wherein the abrasive grain layer is electrodeposited on the mesh substrate through the metal plating layer. Whetstone.