JPH068147A - Support method for elastic grinding wheel, and grinding wheel support - Google Patents

Abstract

PURPOSE:To effectively prevent the damage and injury of a product and the interruption of a process following the peeling-off of a grinding wheel by fixing in bonding the elastic grinding wheel at a bonding agent layer on the grinding wheel support surface of a metal flange, supporting the bonding agent layer by means of the solid body of the bonding agent in a hole for stopping falling off, and arresting falling off from the metal flange. CONSTITUTION:In the case of the support method of an elastic grinding wheel 2 in which the elastic grinding wheel 2 is supported at the metal flange 1 of a rotary supporter by the use of a bonding agent, the bonding agent to be used has relatively large bonding strength to the elastic grinding wheel grindstone 2, and small bonding strength to the metal flange 1. Also, the metal flange 1 has a hole 4 for stopping falling off, at the important position of a grinding wheel support surface 3, and the elastic grinding wheel 2 is fixed bondingly at a bonding agent layer 5 dished up on the grinding wheel support surface 3 of the metal flange 1, and the bonding agent layer 5 is supported by means of the solid body 6 of the bonding agent filled in the hole 4 for stopping falling- off, and falling-off from the metal flange 1 is arrested.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supporting an elastic whetstone which prevents the elastic whetstone from peeling from a support, and a whetstone support used in the method.

[0002]

2. Description of the Related Art An elastic whetstone is a whetstone that uses an elastic binder to bond abrasive grains, and is usually used by sticking it to a metal flange surface of a rotary support with an adhesive for polishing glass and other surfaces. Is.

[0003]

By the way, when polishing is performed while rotating the rotary support to which the elastic grindstone is adhered while rotating at a high speed, the grindstone is separated from the rotary support and violently collides with the object to be polished. Creates a problem of scratching or damaging the. When peeling of the grindstone occurs, the process must be stopped.

For example, in a polishing machine for chamfering the edge of a large glass plate, one to two elastic grindstones are used per machine, and the glass plates are simultaneously rotated while being linearly fed to the glass plate. The plate is chamfered, but the grinding stone is 2000
The grindstone may suddenly peel off when rotated at rpm. In the example, 20 to 30 of the 1000 elastic whetstones used during the 4 day life of the whetstone
An accident occurred in which the pieces were separated and scattered.

When an elastic grindstone is adhered and held on a metal flange surface, the holding force depends mainly on the adhesive strength of the adhesive. When the adhesive strength is limited, the adhesive area is increased or the friction of the adhesive surface is increased. I have no choice but to increase resistance.

For example, as shown in FIG. 3A, a grindstone 13 is formed on the adhesive layer 12 laid on the metal flange 11.
And the step of bonding the adhesive to the inner and outer peripheral surfaces of the grindstone 13 to solidify the adhesive, as in (b).
4, a method of using the grindstone 13 having an increased adhesion area, a method of integrally providing the frame 15 on the metal flange 11 and mounting the grindstone 13 in the frame 15 as in (c), (d)
Like the rough surface 1 by blasting on the whetstone mounting surface 16
A method using a metal flange 11 provided with No. 7 has been conventionally known. However, according to these methods, although the peel strength can be improved to some extent, the limit of the adhesive strength cannot be basically supplemented.

Conventionally, urethane type adhesives have been mainly used for adhesion of elastic grindstones. Although urethane type adhesives have excellent adhesive force to elastic grindstones, the adhesive force to metal plate of a metal flange is high. Since it is inferior, peeling cannot be avoided when a force greater than the adhesive strength to the iron plate is applied to the grindstone.

An object of the present invention is to provide a method of supporting an elastic grindstone having excellent peeling resistance by using the adhesive strength and mechanical strength of an adhesive, and a grindstone supporting tool used in the method.

[0009]

In order to achieve the above object, in the method for supporting the elastic grindstone according to the present invention, the method for supporting the elastic grindstone in which the elastic grindstone is supported on the metal flange of the rotary support by using an adhesive. The adhesive has a relatively large adhesive strength with respect to the elastic grindstone and a small adhesive strength with respect to the metal flange. The elastic whetstone is adhesively fixed to the adhesive layer placed on the whetstone support surface of the metal flange, and the adhesive layer is supported by the solid substance of the adhesive agent filled in the retaining hole. It prevents the metal flange from falling off.

Further, the grindstone support according to the present invention is a grindstone support for adhering an elastic grindstone, which has a metal flange, and the metal flange has a retaining hole opened on the grindstone support surface. There is an adhesive layer on the whetstone support surface, and the adhesive is embedded in the retaining hole, the adhesive layer on the whetstone support surface,
It is for holding the elastic grindstone in an adhesive manner, and the solid material of the adhesive filled in the retaining hole is integrated with the adhesive layer on the grindstone supporting surface and prevents it from escaping from the metal flange. is there.

[0011]

[Function] In order to bond the elastic grindstone to the metal flange of the rotary support, it is conceivable to use a phenol-based, epoxy-based, urethane-based or silicon-based adhesive. These adhesives have their respective characteristics. Phenol-based and epoxy-based adhesives have excellent adhesive strength to the metal plate of the metal flange, but have poor adhesiveness to the elastic grindstone. On the other hand, the urethane-based and silicon-based adhesives, on the contrary, are excellent in adhesiveness to the elastic grindstone, but inferior in adhesive strength to the iron plate.

Therefore, when urethane or silicon light adhesive is used as the adhesive, the adhesive layer laid on the grindstone mounting surface of the metal flange strongly bonds with the grindstone and prevents the flange from coming off. The solidified material of the adhesive embedded in the hole mechanically bonds with the flange.

It is preferable that the retaining holes are formed in a reverse taper shape with respect to the grindstone mounting surface. Since the solidified material of the silicon-based adhesive is rich in elasticity, the solidified material may elastically deform and escape from the hole when the grindstone receives an external force, but the solidified material of the urethane-based adhesive has high rigidity. Therefore, they are mechanically and securely coupled, and do not escape from the inside of the hole.

The solidified material of the adhesive embedded in the retaining hole is mechanically bonded to the metal flange and integrated with the adhesive layer provided on the flange to prevent peeling from the flange. In addition, the holes for retaining are bottomless,
It does not matter whether it is bottomed or not.

When a phenol-based or epoxy-based adhesive is used, since the bond strength to the grindstone is poor, conversely, a hole for preventing slipping is provided on the grindstone side, and theoretically, by filling the hole with the adhesive. Although it is feasible, it is usually not practical because it is difficult to provide a retaining hole in the grindstone.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows a metal flange (iron plate) as a rotation support.
1 is a two-component urethane adhesive (KU-661, KU66
The elastic grindstone 2 was adhered by using 2 Konishi Co., Ltd.

The elastic grindstone 2 is made of CeO ₂ , SiO ₂ , ZrO.
Abrasive grains such as ₂ are bonded with a rubber bonding agent containing cashew, outer diameter 205 mm, inner diameter 140 mm, thickness 30 mm
Is a grindstone for chamfering a large glass plate.

On the whetstone mounting surface 3 of the metal flange 1 (thickness 3 mm), there are reverse taper-shaped protrusions with an opening diameter of 10 mm on the small diameter side and 14 mm on the large diameter side at four locations on the same circumference, as shown in FIG. The stop hole 4 was opened. The bottom of the retaining hole 4 is closed with tape (not shown), and the grindstone mounting surface 3 of the metal flange 1
An adhesive (two-component urethane adhesive) is applied onto the grindstone mounting surface 3 and is filled in the retaining holes 4 on the adhesive layer 5 mounted on the grindstone mounting surface 3. The elastic grindstone 2 was adhered, and the solidified material 6 of the adhesive was formed in the retaining hole 4.

A large glass plate was chamfered by mounting the metal flange 1 on a rotary shaft (not shown) of a polishing machine. Polishing was performed at a rotation speed of 2000 rpm.
With respect to 000 elastic whetstones, during the expiration date of 4 days, which is the lifetime limit of one whetstone, no peeling accident of the whetstone occurred at all.

[0020]

As described above, according to the present invention,
Since the grindstone is held on the rotary support by the mechanical bonding force together with the original adhesive force by utilizing the rigidity of the adhesive, the adhesive to be used has a characteristic that it is attached to the metal surface of the rotary support. Even if the adhesive strength is inferior, the bond strength with the metal surface can be increased to prevent the peeling and scattering of the grindstone during polishing work, and the process interruption, product damage and damage due to the grindstone peeling are effective. It has the effect that can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view of a metal flange of a whetstone support.

FIG. 2 is an enlarged sectional view of a metal flange to which an elastic grindstone is attached.

3A to 3D are views showing a conventional mounting example of an elastic grindstone.

[Explanation of symbols]

 1 Metal Flange 2 Elastic Grinding Wheel 3 Grinding Wheel Mounting Surface 4 Holes for Preventing Removal 5 Adhesive Layer 6 Solid Material of Adhesive

Claims (2)

[Claims] 1. A method of supporting an elastic grindstone in which an elastic grindstone is supported on a metal flange of a rotary support by using an adhesive, wherein the adhesive has a relatively large adhesive strength to the elastic grindstone and a metal flange. However, the metal flange has a hole for preventing slippage at a key point on the grindstone support surface, and the elastic grindstone is attached to the adhesive layer on the grindstone support surface of the metal flange. Is adhered and fixed, and the solid material of the adhesive filled in the retaining hole supports the adhesive layer to prevent the adhesive layer from falling off from the metal flange. 2. A grindstone support for adhering an elastic grindstone, comprising a metal flange, wherein the metal flange has a retaining hole formed in the grindstone support surface, and an adhesive layer is provided on the grindstone support surface. Is served,
In addition, an adhesive agent is embedded in the retaining hole, and the adhesive layer placed on the grindstone support surface holds the elastic grindstone in an adhesive state, and the adhesive agent filled in the retaining hole. The solid object of (1) is integrated with the adhesive layer on the grindstone supporting surface and prevents the solid material from coming out of the metal flange.