JPH03256676A - Polishing cloth - Google Patents

Abstract

PURPOSE:To provide a grinding cloth which is durable against a use for a long time without the occurrence of choking by a method wherein polishing layers formed of resin containing grinding grains are applied and cured intermittently in a given thickness at intervals of a given distance on the surface of woven cloth. CONSTITUTION:Polishing layers 2 formed of resin containing grinding grains are applied and cured intermittently in a given thickness at intervals of a given distance on the surface of woven cloth 1. Thus, grinding chips are transferred in a recessed part, where the polishing layer 2 is not formed, for removal. This constitution reduces the occurrence of choking of the polishing layer 2, and causes a polishing cloth to be durable against a use for a long time.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to improvements in abrasive cloths.

[Conventional technology]

Traditionally, grinding cloth, which has an abrasive applied to the surface of the cloth, can be used for wood,
It is widely used for polishing metals, etc., and polishing machines that continuously rotate and run an endless belt-like abrasive cloth are also widely used in various fields.

However, conventional abrasive cloths become clogged with the abrasive layer in a relatively short period of time, and become unusable even though the abrasive material on the abrasive cloth is hardly worn away, requiring frequent replacement of the abrasive cloth. Therefore, the actual working time of the polishing machine was shortened, which was inefficient.

[Problem to be solved by the invention]

The present invention has been made to solve the above problems, and its purpose is to provide a grinding cloth that can be used for a long time without clogging.

[Means to solve the problem]

The above object can be achieved by a grinding cloth in which a polishing layer made of a resin containing abrasive grains is intermittently applied to the surface of a woven cloth at a predetermined thickness at predetermined intervals and solidified.

[For production]

With the above configuration, the grinding debris is transferred to the recesses where no polishing layer is provided and is removed, which reduces clogging of the polishing layer and provides a grinding cloth that can withstand long-term use. be.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIG. 1 is an enlarged plan view of an embodiment of the grinding cloth according to the present invention;
2 is a sectional view taken along line A--A in FIG. 1, FIG. 3 is a plan view showing another embodiment, and FIG. 4 is a plan view showing still another embodiment.

In the figure, 1 is a woven fabric, and 2 is an abrasive layer.
It is coated intermittently at predetermined intervals to a predetermined thickness and solidified.

The polishing layer 2 is made of diamond, CBN, SiC, or Al2O in a heat-resistant resin such as LPG or modified phenol.

10 to 25% by volume of abrasive grains such as the following are mixed in, coated on a woven fabric to a desired thickness, and then heated and solidified.

The standard thickness of the polishing layer 2 is about 50 to 200 μm, and can be increased or decreased to a range of about 30 to 500 μm as necessary, and is changed as appropriate depending on the type of wood to be ground.

Generally, as shown in FIG. 3, in an embodiment where a circular abrasive layer is formed on a woven fabric, the spacing from one protrusion to the next is determined as a function of the thickness of the protrusion (abrasive layer). That is, the wider and taller the protrusion becomes, the more the distance between the next protrusion needs to be increased. Usually, when the convex surface is about 0.5 to 1 mm2, the interval between the convex parts is 5 to 10 mm, and the standard height is 0.3 mm in this case.

The area ratio occupied by the polishing layer 2 on the woven fabric 1 is recommended to be about 10 to 60%, depending on the purpose of use. If it is more than 60%, clogging tends to occur, and if it is less than 10%, the polishing efficiency decreases.

By intermittently providing the abrasive layer 2 on the woven fabric 1 as described above, abrasive debris is moved to and removed from areas where the abrasive layer 2 is not provided, thereby preventing clogging.

Further, by using the woven fabric 1 as a base material for fixing the polishing layer 2, the strength can be increased to three times or more compared to the case where a knitted fabric is used.

Note that in order to increase the fixing force of the abrasive grains in the polishing layer 2, it is recommended that a fiber substance be mixed into the resin in advance. As the fiber material, any high-strength, heat-resistant material such as graphite fiber or glass fiber can be used, but in particular metal fiber such as stainless steel or iron with a thickness of 10 to 50 mm can be used.
10 to 2 μm, length of about 200 to 1000 μm
It is effective to mix about 0% by weight. By mixing such a fibrous material into the resin, it becomes possible to contain abrasive grains in the resin at a volume percentage of about 30%.

Furthermore, carbon in the resin, W2 S 1M o 3
It is also recommended to mix a solid lubricant such as No. 2 at a volume ratio of about 3 to IO%.

In addition, by using threads of the woven fabric 1 mixed with metal fibers, the heat dissipation effect during polishing can be improved.

Another embodiment of the invention is shown in FIG.
In this embodiment, the polishing layer 2 is coated in the moving direction of the polishing cloth (
By slanting from right to left in the figure, the effect of discharging polishing debris is improved.

〔Effect of the invention〕

Since the present invention is constructed as described above, it is possible to provide a grinding cloth that can be used for a long time without clogging.

It should be noted that the present invention is not limited to the above-mentioned embodiments,
It is intended to encompass all modifications and variations that may readily occur to those skilled in the art from the above description.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is an enlarged plan view of an embodiment of the grinding cloth according to the present invention;
2 is a sectional view taken along line A--A in FIG. 1, FIG. 3 is a plan view showing another embodiment, and FIG. 4 is a plan view showing still another embodiment.

Claims (1)

[Scope of Claims] 1) An abrasive cloth comprising a woven cloth in which a polishing layer made of resin containing abrasive grains is intermittently applied to a predetermined thickness at predetermined intervals on the surface of the fabric and solidified. 2) The grinding cloth according to claim 1, wherein a fiber substance is mixed into the resin. 3) The grinding cloth according to claim 1, wherein a seamless endless belt is used as the woven cloth. 4) The grinding cloth according to claim 1, wherein metal fibers are mixed into the woven cloth.