JPS6317653Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in polishing tools used for polishing the surfaces of non-metallic and metallic objects to be polished.

Generally, when polishing the surface of a non-metallic object such as wood, bamboo, synthetic resin, etc. or a metal object such as aluminum, steel, copper, steel, etc., a polishing tool such as a file or sandpaper is used. is frequently used.

As is well known, a file is a so-called metal polishing tool that is made by forming teeth on the surface of a material such as a tool steel piece and then hardening it.

However, when manufacturing this, the teeth had to be formed by stamping the surface of the material using a chisel, which caused inefficiency and made mass production difficult. Furthermore, since the teeth of the file are formed using the method described above, the side surfaces of the teeth are not smooth.
For this reason, clogging easily occurs, and this is particularly noticeable when polishing non-metallic objects.
Moreover, it is extremely difficult to make the tooth width extremely narrow, and as a result, it cannot be used for final polishing.

In contrast, sandpaper is made by adhering abrasive particles to the surface of paper or cloth using an adhesive, so it can be made into a fine mesh and can be used for final polishing.

However, sandpaper has the drawback that as the polishing operation continues, the abrasive material gradually peels off, and this peeled off abrasive material causes harmful effects and also has a very short lifespan. Of course, since the sandpaper is flexible, it may be used while being attached to the holder, but the same applies in this case.

In addition, files and sandpaper have the disadvantage that the teeth or the particles forming the teeth cannot be arranged in a strictly orderly and regulated manner, resulting in fine scratches on the surface of the object to be polished. .

As an attempt to overcome the drawbacks of such existing abrasive tools, for example, a file foil is disclosed in Japanese Patent Publication No. 51-9958.

This sanding foil is made of metal and is excellent in that there are no depressions formed at the intersections of the teeth as in a normal file, and the holes are continuous. However, the teeth formed are extremely fine and connected in a defined arrangement.

However, as the name suggests, the above-mentioned scraped foil is a very thin foil, so it lacks rigidity when used alone and will easily break if used as is.

For this reason, it is used by being attached to a holder, but if the teeth of the metal foil become worn out, the holder and the like must be discarded, which is extremely problematic in terms of resource utilization.

You can also use it as a polishing tool by pasting the sandpaper on the holder.
Depending on the state of adhesion between the two and the conditions of the polishing process, this non-rigid wire may peel off from the holder.
There were cases where it could not withstand long-term use.

Furthermore, the angle formed between the top and side surfaces of the teeth formed on the metal foil, that is, the cutting action angle, is a so-called obtuse angle of 90 degrees or more, making it difficult to perform polishing with good scraping action. .

The present invention was devised in order to solve the above-mentioned problems, and its purpose is to create a holder by making the member with many minute teeth made of a rigid metal plate. In addition to making it possible to detachably attach the tooth to the tooth, if the tooth becomes worn out, only this metal plate can be replaced to make effective use of resources, and the so-called cutting action angle between the top and side surfaces of the tooth can be made acute. ,
Not only can polishing be done with a small force, but
To provide a polishing tool capable of uniformly and beautifully finishing the surface of an object to be polished, and also capable of reducing costs.

The basic structure of the present invention consists of a rigid metal polishing plate with a large number of fine convex teeth with an acute angle between the top and side surfaces on at least one surface, and a holder with a grip. , an engaging part provided on one side of the metal polishing plate and the holder and releasably engaged with each other, and a screw fastener provided on the other side of the metal polishing plate and the holder and removably fastened to each other; It is characterized by its composition.

In other words, by making the cutting action angle of the teeth acute, the polishing function is further improved, and by making the metal member with teeth into a plate shape, it is possible to attach and detach it to the holder. .

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of embodiments of the present invention will be explained below based on the drawings.

FIG. 1 shows a polishing tool according to the present invention, and is a partially longitudinally sectional front view thereof. FIG. 2 shows a bottom view of FIG.

A polishing tool 1 according to the present invention includes a metal polishing plate 2,
and a holder 3, which are detachably attached.

The metal polishing plate 2 is made of a metal plate such as a steel plate, and has a thickness that allows it to have rigidity. In this example, a 0.5mm steel plate is used.

A large number of fine convex teeth 4 are formed on at least one surface of the metal polishing plate 2.

FIG. 3 is an enlarged sectional view of the metal polishing plate, and FIG. 4 is a perspective view thereof.

The tooth 4 has a substantially cylindrical shape and has a flat top surface 5 and an arcuate side surface 6, and a blade portion 7 is formed at the boundary between both surfaces.

The angle formed between the top surface 5 and the side surface 6, ie, the cutting action angle α, is a so-called acute angle smaller than 90 degrees. Preferably, the temperature should be between 40 and 70 degrees.

In this example, the thickness T of the metal polishing plate 2 is 0.5 mm.
The maximum diameter D of tooth 4 is 0.13 mm, and the height H of tooth 4 is 0.13.
mm, and the cutting action angle α is 70 degrees.

The teeth 4 may be arranged randomly, but it is better if they follow a predetermined arrangement.

In this way, the polishing force is more determined, and the surface of the object to be polished can be finished beautifully and uniformly without being scratched.

In this example, the metal polishing plate 2 has a substantially triangular shape when viewed from above, and its tip is bent to form a hooking piece 8 for attachment to the holder 3. A through hole 9 for screws and a conical seat 10 are provided.

The holder 3 includes a grip part 11 and a mounting part 12, and is made of, for example, synthetic resin.

In this example, the mounting portion 12 has a substantially triangular flat plate shape, and a latching recess 13 is formed at the tip of the mounting portion 12 to which the latching piece 8 of the metal polishing plate 2 engages. A free hole 14 and a screw hole 15 are provided. Then, the metal polishing plate 2 is attached to the mounting part 12 of the holder 3 by engaging the latching piece 8 and the latching recess 13 and screwing the screw 16 inserted through the through hole 9 into the screw hole 15. It will be done.

Of course, both can be separated by removing the screw 16.

It is preferable that the locking piece 8 and the locking recess 13 have shapes that restrict relative movement not only in the vertical direction but also in the horizontal direction. For this purpose, for example, a groove is cut in the locking piece 8, and a groove is cut in the locking recess 13.
A protruding piece that can be fitted into the split groove is formed on the side.

Furthermore, it is natural that the head of the screw 16 should be placed so that it does not protrude beyond the polishing surface of the metal polishing plate 2.

The locking piece portion 8, the locking recess portion 13, etc. constitute a locking portion that is provided on one side of the metal polishing plate 2 and the holder 3, respectively, and can be releasably engaged with the metal polishing plate 2 and the holder 3.
The through hole 9, the screw hole 15, the screw 16, etc. constitute a screw fastener that is provided on the other side of the metal polishing plate 2 and the holder 3, respectively, and can be releasably fastened.

The teeth 4 formed on the metal polishing plate 2 are not limited to a substantially cylindrical shape as shown in FIG.

For example, it may be a convex strip as shown in FIG. 5, or it may be a convex strip as shown in FIG. In the case of the one shown in FIG. 6, since the top surface is flush, there is no problem like that of a normal file.

The metal polishing plate 2 having the teeth 4 as described above can be obtained by applying a photolithography method.

7 to 11 are schematic cross-sectional views showing an overview of the method.

That is, the method uses a metal plate material 20 which can be corroded by an etchant as a starting material (FIG. 7).

Therefore, on the surface of the metal plate material 20 that will be polished,
After degreasing, a corrosion-resistant photosensitive resin, that is, a photoresist film 21 shown in FIG. 8 is applied.

Next, the photoresist film 21 is subjected to a baking process, that is, a process called pre-bake.

Separately, a tooth pattern to be formed is drawn using a microplotter or the like and reduced to produce a photomask 22, which is a precision photographic plate.

As shown in FIG. 9, the photoresist film 2
A photomask 22 is placed on top of the photomask 1 and exposed.

Thereafter, the exposed metal plate 20 is developed, and the photoresist film left on the metal plate in the development process is subjected to a baking process, that is, a process called post-bake, so that the image drawn on the photomask is Opening hole 23 with the same shape as the pattern
As shown in FIG. 10, holes are formed in the photoresist film 21 to form exposed metal portions 24.

Next, the metal plate material 20 having the exposed metal portion 24 obtained in this manner is physically moved relative to the corrosive liquid, and the exposed metal portion 24 is chemically corroded by the corrosive liquid.

This corrosion causes physical relative movement between the metal plate and the corrosive liquid, so as the corrosion depth increases, it spreads laterally.

That is, the recesses 25 formed on the surface of the metal plate after being etched have a curved cross section as shown in FIG.

In order to physically perform the relative movement, for example, a tank is filled with a corrosive liquid, and the metal plate 20 having the exposed metal portion 24 is immersed in the tank.
This can be done by moving it horizontally or vertically.

Conversely, the metal plate material 20 having the exposed metal portion 24 may be placed stationary and the corrosive liquid may be sprayed toward it.

Alternatively, these operations may be appropriately combined.

After the etching process is completed, the remaining photoresist film 21 is removed.

Then, as shown in FIG. 3, convex teeth 4 are formed between adjacent bay-shaped recesses 25.

In this way, it is possible to obtain a metal polishing plate 2 having a large number of teeth 4 formed on the surface which becomes the polishing surface.

Although the metal polishing plate described above was made using a metal plate material with a smooth surface on which teeth are to be formed, the present invention is not limited to this.

For example, as shown in FIG. 12, a metal plate 20' having a roughened surface on which teeth are to be formed can be used. In this case, the top surface of the tooth 4' becomes a rough surface as shown in FIG.

In the case of such a metal polishing plate 2', since the polishing action due to the rough surface is added, even more excellent polishing can be performed.

Furthermore, if only the surface layer portion where the teeth are formed is heat treated and hardened, the hardness of the teeth increases and good polishing action can be maintained for a long period of time.

In this case, since only the surface layer portion is hardened, there is no problem in cutting, perforating, bending, etc. the metal polishing plate, and it becomes possible to deform it into various shapes.

Of course, after processing the shape, the surface layer or the entire surface may be hardened.

In this example, the flat metal polishing plate was
Although it has been described that it is attached to the flat surface of the holder, it is not limited to this.

For example, a metal polishing plate may be wrapped around a cylindrical holder, a metal polishing plate may be attached along a holder with a convex or concave curved surface, or a metal polishing plate may be attached to a holder with an uneven surface. Can be installed alongside. In this way, holes, concave or convex surfaces, rough finishing, etc. can be polished.

Of course, without making the mounting surface of the holder a specific shape,
The metal polishing plate itself may be pressed and attached to the holder.

As described above, according to the present invention, the following excellent effects can be achieved.

(1) The metal polishing plate with fine teeth is made into a thick plate that has its own rigidity, so it can be detachably attached to the holder.

Therefore, if the teeth become worn out, there is no need to discard the holder together with the holder, and only the metal polishing plate needs to be replaced.

As a result, resources can be used effectively.

(2) Since the metal polishing plate itself has rigidity, it can be removed from the holder and used alone depending on the work being done.

(3) The angle between the top and side surfaces of the tooth, that is, the cutting action angle, is a so-called acute angle smaller than 90 degrees, so it can be polished with a small action force.

Moreover, the surface of the object to be polished can be finished uniformly and beautifully.

(4) The holder can be made of synthetic resin or the like by injection molding, and the metal polishing plate can be made by a method applying photo-etching, making it possible to mass-produce and reduce costs.

(5) When using a metal polishing plate with a rough top surface of the teeth, polishing action due to the rough surface can also be expected.

(6) If a hardened metal polishing plate is used, the polishing capacity can be doubled.

(7) If only the surface layer where the teeth are formed is used, cutting, drilling, bending, etc. can be carried out after that, resulting in good workability.

(8) If a metal grinding plate having teeth on not only one surface but also the other is used, the life span can be doubled.

(9) One side of the metal polishing plate and the holder are removably engaged with each other by the engaging part, and the other sides of the metal polishing plate and the holder are removably fastened with screw fasteners. For example, compared to the case of fastening with only a single screw fastener, it can be installed more reliably without relative rotation, and it can be quickly attached and detached compared to the case of fastening with two screw fasteners.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal front view showing a polishing tool according to the present invention. Figure 2 is its bottom view. FIG. 3 is an enlarged cross-sectional view of a metal polishing plate. FIG. 4 is a perspective view thereof. FIG. 5 is a perspective view of a metal polishing plate whose teeth have a convex shape. FIG. 6 is a perspective view showing teeth in which convex stripes intersect vertically and horizontally. 7 to 11 are cross-sectional views showing each step of a method for manufacturing the metal polishing plate shown in FIG. 3 using a metal plate material with a smooth surface as a starting material. FIG. 12 is a sectional view showing a metal plate material with a rough surface. Figure 13 shows
13 is a sectional view showing a metal polishing plate obtained using the metal plate material shown in FIG. 12. FIG. DESCRIPTION OF SYMBOLS 1... Polishing tool, 2... Metal polishing plate, 3... Holder, 4... Teeth, 5... Top surface, 6... Side surface, 11
...gripping part, α...cutting action angle.

Claims (1)

[Scope of utility model registration request] A rigid metal polishing plate having a large number of minute convex teeth with an acute angle between the top surface and the side surface on at least one surface, a holder having a gripping portion, and each of the metal polishing plate and the holder. Polishing characterized by comprising: a hook part provided on one side and capable of being releasably engaged; and a screw fastener provided on the other side of the metal polishing plate and the holder, respectively, capable of being releasably fastened. Ingredients.