JPH09314470A - Superabrasive grain wheel and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superabrasive grain layer wheel made of a resinoid or vitrified superabrasive grain layer having only a small level difference in a joined part by forming the abrasive grain layer in a ring shape and providing the optional number of cutting parts. SOLUTION: A ring-like superabrasive grain layer 4 and a ceramic base layer 5 are divided into not so many numbers by cutting parts 8 and stuck to the outer periphery of a base board 1. The cut superabrasive grain layer 4 and base layer 5 are joined to the outer periphery of the base board 1 via an adhesive layer 6 and, by firmly fastening these, air bubbles are eliminated and the layers are hardened and completed. Since layers formed in ring shapes are temporarily cut and joined together, this joining together is accurately performed like a broken canister and thus a wheel with little deformation is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention has a wheel peripheral speed of 1800.
The present invention relates to a super-abrasive wheel capable of high-precision machining even when used at a high-speed rotation exceeding m / min, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, diamond or cubic boron nitride (CBN) is used as an abrasive grain and is hardened with a resin to form a resinoid superabrasive grain layer, and the abrasive grain is a paste solution (dextrin) and an adjusting agent (naphthalene). ) And a binder (clay, feldspar) and mixed and hardened is known,
In the conventionally known superabrasive grain wheel, a superabrasive grain layer a as shown in FIG. 1 is fixed to the outer periphery of a base plate b made of steel, aluminum or aluminum and resin with an adhesive.
In the figure, c is a rotating shaft. It should be noted that a conventionally known Japanese Utility Model Laid-Open No. 5-85548 describes a superabrasive grain wheel in which a superabrasive grain layer is joined to a ceramic disk substrate while inclining it at an angle of 5 to 50 degrees, although it does not have a base layer. There is.

[0003]

The resinoid superabrasive grain layer and the vitrified superabrasive grain layer layer described in the above-mentioned publication are divided into 16 in the figure, and there is a problem in the manufacturing method. . Although not described in the above-mentioned publicly known publication, the publicly known one is that the superabrasive grain layer formed into a semi-cylindrical shape is bonded to the outer periphery of the substrate, but the seams do not always match, and 16 Since it is also divided, there are many seams and it can not be made into a perfect circle, so I often called the truing process, which is a grinding and finishing process on the surface. The reason why the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is formed on one ring and is not adhered to the outer periphery of the disk-shaped substrate is not explained. It is difficult to apply a uniform thickness over the entire circumference, it will not distort and will not be a perfect circle, even if there are partial bubbles, it can not be expelled,
This is because accurate grinding cannot be performed by processing with such a superabrasive layer wheel. In this respect, in the case of the divided abrasive grain layer, the bubbles can be expelled from the joint by tightening. By the way, it is well known that the broken tea bowl can be joined relatively easily according to the cracks, and can be restored to such an extent that the cracks cannot be understood. According to the principle of joining the broken tea bowl, the abrasive grain layer is once formed into a ring shape, divided into a number of divided abrasive grain layers, and the divided surfaces are joined to form an accurate superabrasive layer wheel. Not only that, but also a seam for removing bubbles can be formed, and a super-abrasive layer wheel of good quality with few steps of the seam can be obtained.

[0004]

An object of the present invention is to obtain a superabrasive layer wheel of resinoid or vitrified superabrasive layer having a small step at the seam.

[0005]

Therefore, according to the present invention, a resinoid superabrasive grain layer in which abrasive grains of diamond or cubic boron nitride (CBN) are hardened with a resin on the outer peripheral surface of a disk-shaped substrate mounted on a rotating shaft, Alternatively, in a superabrasive wheel in which a vitrified superabrasive layer obtained by admixing the abrasive grains with a paste solution, a modifier and a binder and hardening the abrasive grains is formed in a ring shape, the abrasive layer is formed in a ring shape. This is a superabrasive wheel provided with an arbitrary number of cutting parts. In addition, the ring-shaped resinoid superabrasive grain layer is a superabrasive grain wheel in which 1 to 3 cut portions are provided. Further, the ring-shaped vitrified superabrasive grain layer is a superabrasive grain wheel provided with 2 to 5 cut portions. The cut portion of the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is a superabrasive grain wheel inclined at a desired angle. In addition, the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is a superabrasive grain wheel in which a base layer made of ceramic abrasive grains is integrally formed inside thereof. Also,
This is a superabrasive grain wheel obtained by superposing a plurality of superabrasive grain wheels formed as described above. Further, the disk-shaped base mounted on the rotating shaft of the superabrasive wheel is a superabrasive wheel integrally formed with the width of the superposition of the superabrasive wheel. Further, a resinoid superabrasive grain layer in which abrasive grains of diamond or cubic boron nitride (CBN) are hardened with a resin on the outer peripheral surface of a disk-shaped substrate mounted on a rotating shaft,
Alternatively, in a superabrasive wheel in which a vitrified superabrasive layer obtained by admixing the abrasive grains with a paste solution, a modifier and a binder and hardening the abrasive grains is formed in a ring shape, the abrasive layer is formed in a ring shape. Providing an arbitrary number of cutting parts, applying an adhesive to the outer peripheral surface of the disk-shaped substrate, and a method of manufacturing a superabrasive wheel that adheres while removing the bubbles in the adhesive by tightening the cut abrasive grain layer. It was done.

[0006]

EXAMPLE An example showing the superabrasive layer wheel of the present invention and its manufacturing method will be described with reference to the drawings.
Reference numeral 1 denotes a base that is detachably attached to the rotary shaft 2 and is made of ceramics, steel, aluminum or the like. A mounting through hole 3 is formed in the center of the base 1. The ceramic substrate 1 is silicon carbide SiC or aluminum oxide Al.
_A binder is mixed with any of the aggregates of ₂ O ₃ , and pressed into a circular disk shape by pressing, and this is dried to give a raw finish, put in a bell kiln and kept at 1280 ° C for about 1 week. Bake to complete.

Next, the resinoid superabrasive grain layer or the vitrified superabrasive grain layer attached to the outer periphery of the substrate 1 is shown in FIG.
The ring-shaped superabrasive grain layer 4 is formed into a ring-shaped super-abrasive grain layer 4 and the ceramic base layer 5 is integrally formed on the inner periphery thereof at the same time. The ceramic base layer 5 may not be formed. The ring-shaped superabrasive grain layer 4 and the ceramic base layer 5 are adhered to the outer periphery of the substrate 1 via the adhesive layer 6 having a uniform thickness, but it is difficult to adhere via the adhesive layer 6 having a uniform thickness. As shown in FIG. 4, the thickness of the adhesive layer 6 may change, or the bubbles 7 may partially enter to generate distortion due to centrifugal force during processing. In the case of a grain layer, it can be removed by tightening it, but since the ring-shaped abrasive grain layer is not tightened, bubbles cannot be removed.) In the sense of avoiding this, in the embodiment of the present invention, as shown in FIG. As described above, the ring-shaped superabrasive grain layer and the ceramic base layer 4 are divided into not so many numbers and bonded to the outer periphery of the base 1.

In this case, since the resinoid superabrasive grain layer is elastic and can be bent to some extent, the vitrified superabrasive grain layer is vitreous and has almost no elasticity and there is a risk of cracking. Cut into 2 to 5 pieces. 8 is a cutting part.

The superabrasive layer 4 and the base layer 5 cut into the above number are bonded to the outer periphery of the substrate 1 via the adhesive layer 6, and are strongly tightened to remove the air bubbles 7, and are solidified to complete.

According to the present application, since the ring is cut and then the pieces are aligned, it is possible to accurately align the broken containers and obtain a wheel with less distortion.

In the present application, the superabrasive grain layer wheel formed as described above can be superposed in a plurality of layers as shown in FIG. 6 to form a wide superabrasive grain layer wheel. In the case of FIG. 6, the base 1 may be only the thickness.

[0012]

According to the present invention, diamond or cubic boron nitride (CB) is formed on the outer peripheral surface of a disk-shaped substrate mounted on a rotating shaft.
N) a resinoid superabrasive grain layer in which the abrasive grains are hardened with a resin, or a superabrasive grain in which a vitrified superabrasive grain layer in which the abrasive grains are mixed with a paste solution, a regulator and a binder and then hardened is bonded with an adhesive. In the wheel, the abrasive grain layer is formed into a ring shape, and since it is a superabrasive grain wheel provided with an arbitrary number of cut portions, the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is once a ring. Since it is formed into a ring and cut into multiple pieces and bonded together, it becomes an accurate circular ring so that broken containers can be fitted together. It can be an abrasive layer wheel. Further, the ring-shaped resinoid superabrasive layer is 1 to
Although it is a superabrasive grain wheel provided with three cutting portions, the resinoid superabrasive grain layer is somewhat elastic, so
Since it can be bonded even with a few cuts and there are few seams,
Truing processing can be reduced. Further, since the ring-shaped vitrified superabrasive grain layer is a superabrasive grain wheel provided with cut portions of 2 to 5, a vitrified superabrasive grain layer such as glass can also be satisfactorily bonded. Further, since the cut portion of the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is a superabrasive grain wheel inclined at a desired angle, the influence of the step of the seam is small. In addition, the resinoid superabrasive grain layer or the vitrified superabrasive grain layer is a superabrasive grain wheel in which a base layer made of ceramic abrasive grains is integrally molded at the same time. If the layer wears unknowingly in use, it does not damage the work piece or the substrate. In addition, since the superabrasive grain wheel formed as described above is a superabrasive grain wheel obtained by superposing a plurality of sheets in a multi-stage manner, it is possible to easily grind a long workpiece. In addition, since it is a superabrasive wheel in which a disc-shaped base of an integral body having a width equal to the polymerization amount of the superabrasive grain wheel is attached to the rotation axis of the superabrasive wheel, the outer periphery of the disc-shaped base is Since it is sufficient to bond the divided superabrasive grain layers, the manufacturing is simple and the structure is robust. Also, on the outer peripheral surface of the disk-shaped base mounted on the rotating shaft,
Adhesion of resinoid superabrasive layer in which abrasive grains of diamond or cubic boron nitride (CBN) are hardened with resin, or vitrified superabrasive layer in which the abrasive grains are hardened by mixing paste solution, adjusting agent and binder In a super-abrasive wheel adhered with an agent, the abrasive layer is formed in a ring shape, provided with an arbitrary number of cutting parts, an adhesive is applied to the outer peripheral surface of the disk-shaped base, and the cut abrasive Since it is a method of manufacturing a super-abrasive grain wheel that adheres while removing air bubbles in the adhesive by tightening the grain layer, the abrasive grain layer is once formed in a ring shape and cut into arbitrary numbers, so cracking Can be joined exactly like a bowl, and bubbles can be removed by tightening the cut abrasive grain layer, and a round superabrasive wheel with few steps can be easily obtained.

[Brief description of drawings]

FIG. 1 is a known example diagram.

FIG. 2 is a plan view of the base of the present application.

FIG. 3 is a perspective view of a ring-shaped superabrasive layer.

FIG. 4 is a state diagram in which a ring-shaped superabrasive grain layer is bonded.

FIG. 5 is a state diagram in which a ring-shaped superabrasive grain layer is divided into three parts.

FIG. 6 is a state diagram in which a superabrasive wheel is superposed in seven stages.

FIG. 7 is a bonding state diagram of a superabrasive layer.

[Explanation of symbols]

1 ... Substrate, 2 ... Shaft, 3 ... Mounting hole, 4 ... Superabrasive layer, 5
... Ceramic base layer, 6 ... Adhesive layer, 7 ... Bubbles, 8 ... Cutting part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinju Igarashi 11-11 Sayamagahara, Iruma City, Saitama Prefecture 10 Mitsui Grinding Wheel Co., Ltd.

Claims (8)

[Claims] 1. A resinoid superabrasive grain layer in which abrasive grains of diamond or cubic boron nitride (CBN) are hardened with a resin on the outer peripheral surface of a disk-shaped substrate mounted on a rotating shaft, or the abrasive grains are used as a paste solution. In a superabrasive wheel in which a vitrified superabrasive grain layer obtained by mixing and solidifying a modifier and a binder is adhered with an adhesive, the abrasive grain layer is formed in a ring shape, and an arbitrary number of cut portions are provided on the abrasive grain layer. Super abrasive wheel. 2. The superabrasive wheel according to claim 1, wherein the ring-shaped resinoid superabrasive layer is provided with 1 to 3 cut portions. 3. The superabrasive wheel according to claim 1, wherein the ring-shaped vitrified superabrasive grain layer is provided with 2 to 5 cut portions. 4. The superabrasive wheel according to claim 1, wherein the cut portion of the resinoid superabrasive layer or the vitrified superabrasive layer is inclined at a desired angle. 5. The superabrasive wheel according to claim 1, wherein the resinoid superabrasive grain layer or the vitrified superabrasive grain layer has a base layer made of ceramic abrasive grains integrally formed inside thereof. 6. The superabrasive grain wheel according to claim 1, wherein a plurality of superabrasive grain wheels formed as described above are superposed. 7. The superabrasive wheel according to claim 6, wherein the disk-shaped base mounted on the rotary shaft of the superabrasive wheel is integrally formed to have a width corresponding to a polymerization amount of the superabrasive wheel. 8. A resinoid superabrasive grain layer in which abrasive grains of diamond or cubic boron nitride (CBN) are hardened with a resin on the outer peripheral surface of a disk-shaped substrate mounted on a rotary shaft, or the abrasive grains are used as a paste solution. In a superabrasive grain wheel in which a vitrified superabrasive grain layer obtained by mixing and hardening a modifier and a binder is bonded with an adhesive, the abrasive grain layer is formed in a ring shape, and an arbitrary number of cutting portions are provided on the abrasive grain layer. A method for manufacturing a superabrasive wheel, in which an adhesive is applied to the outer peripheral surface of the disk-shaped substrate, and the cut abrasive grain layer is tightened to remove air bubbles in the adhesive while adhering.