JPS6312927Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is suitable for polishing the surface of non-metal objects such as wood, bamboo, synthetic resin, etc., and metal objects such as aluminum, steel, copper, and steel. The present invention relates to a metal polishing tool used for polishing, and particularly to a tool attached to a power polishing device.

In general, power polishing equipment such as a rotary sander or an oscillating sander is frequently used for polishing work, and sandpaper is mainly used as the polishing tool.

As is well known, in the case of a power polishing device that does not have a clamping mechanism, the sandpaper is cut to approximately the same size as the movable body, and then both are attached using double-sided tape or hook-and-loop fasteners. In the case of a power polishing device, the sandpaper is attached to the movable body by applying the sandpaper and gripping the front and rear ends of the sandpaper using clamp mechanisms provided at the front and rear of the movable body. In either case, the sandpaper can be removed.

However, since sandpaper is made by adhering abrasive particles to the surface of a base material such as paper or cloth using an adhesive, it is highly flexible.

For this reason, when attaching it to the movable body of a power polishing device, it is necessary to be careful not to loosen it, which makes the work complicated, and even if it is properly attached, it may shift or loosen as the polishing operation continues. The initial mounting condition could not be maintained, and good polishing work could not be performed. Furthermore, since the abrasive particles gradually peel off, unnecessary scratches may be caused by the abrasive particles after peeling off, which not only prevents a good polishing finish but also causes the base material to wear out prematurely, resulting in its service life. The problem was that it was very short.

This invention was devised to solve the problems mentioned above, and its purpose is to:
It can be easily attached to the movable body of a power polishing device, and even during polishing work, the initial attachment state is always maintained, allowing good polishing work to be performed. To provide a metal polishing tool that can give a beautiful polishing finish, has excellent durability, and has a long life.

The metal polishing tool of the present invention has a base body made of a rigid metal plate that has a thin box shape with an uneven bottom wall and a side wall formed around the bottom wall, and can be fitted onto the movable body of a power polishing device. It is composed of a large number of fine convex polished teeth integrally formed on the outer surface of the base body, each having a top surface and a side surface, and the angle between these surfaces is an acute angle.

Since the base body is made of a rigid metal plate, it does not easily bend.

Since the base body is made into a thin box shape, it can be easily fitted onto the movable body of the power polishing device.In particular, since it has side walls, it can be positioned relative to the movable body, and even if the movable body moves, it will not move relative to the movable body. There is no deviation. For this reason,
The initial installation condition is maintained, allowing for good polishing work.

Since the polishing teeth are formed integrally with the base body, they are of the same quality and will not peel off. They also have a top surface and a side surface, and the angle between them, that is, the cutting action angle, is an acute angle, so it is difficult to scratch. exerts interaction effect,
A uniform and beautiful polishing finish can be achieved.

Since the base body and the polished teeth are both made of metal, they are highly durable and can extend their lifespan.

Furthermore, in the present invention, the base body is made of a metal plate and has a thin box shape, so that its strength can be increased. In other words,
The side walls serve as ribs, making them stronger than flat plates.

Since it has a side wall that continues to the bottom wall, it can easily slide against the object to be polished during polishing work, and it is extremely unlikely to get caught.

It is also possible to use a portion of the side wall for mounting to the movable body of the power grinding machine, in which case there is no need to provide a separate mounting portion.

Since the bottom wall is not flat but has projections and recesses, the grinding teeth formed on the projections strike the workpiece strongly and strike it gradually weaker as the grinding teeth on the recesses strike the workpiece weakly.
For this reason, it is ideal for rough finishing, and in particular, it is capable of quickly polishing soft objects to be polished.

Since chips are temporarily stored in the concave portion of the bottom wall, clogging is reduced and polishing time can be extended.

Since the bottom wall has an uneven shape, it is possible to strengthen the same area.

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing the structure of a metal polishing tool according to an embodiment of the present invention. Figure 2 is the − of Figure 1.
Enlarged cross-sectional view. FIG. 3 is an enlarged sectional view of FIG. 1. FIG. 4 is a partially cutaway schematic diagram showing the state in which the metal polishing tool is mounted on a power polishing device, and FIG. 5 is an enlarged sectional view showing the shape of the polishing teeth. Figure 6 shows
It is an enlarged perspective view showing the shape of polishing teeth.

A metal polishing tool 1 consists of a base body 2 and polishing teeth 3.

The base body 2 includes a bottom wall 4 having an uneven shape and a side wall 5 formed around the bottom wall 4, and has a thin box shape and can be fitted onto the movable body 21 of the power polishing device 20.
It is made of metal plates such as steel plates.

In this example, a bottom wall 4 having a rectangular shape and front and rear side walls and left and right side walls which are continuously folded back and forth and on the left and right sides of the bottom wall 4 are illustrated.

The polishing teeth 3 have a convex shape and are integrally formed in large numbers on the outer surface of the base body 2, that is, on the outer surfaces of the bottom wall 4 and the side walls 5. This has a fine approximately cylindrical shape and has a flat top surface 6 and an arcuate side surface 7 following this, a blade portion 8 is formed at the border of both surfaces, and the angle between the top surface 6 and the side surface 7 is In other words, the cutting action angle α is a so-called acute angle smaller than 90 degrees. The cutting action angle is
Preferably the temperature is between 40 and 70 degrees.

In this example, the thickness T of the metal polishing tool 1 is 0.5 mm,
The maximum diameter D of the polishing teeth 3 is 0.13 mm, the height H of the polishing teeth 3 is 0.13 mm, and the cutting action angle α is 70 degrees, and the arrangement of the polishing teeth 3 is not random but follows a predetermined arrangement. .

A flat plate-shaped metal polishing tool 1 having such polishing teeth 3 can be obtained by a method applying photo-etching.

This method was first developed by the applicant and filed in a patent application filed in 1982.
No. 33626, and in the etching process, a metal plate material having an exposed metal portion and an etchant are physically moved relative to each other, and the exposed metal portion is chemically etched by the etchant. A recess 9 with a curved cross section is formed on the surface of the metal plate material after being etched by an action similar to the erosion action in the natural world, and convex polished teeth 3 are formed between the adjacent recesses 9. It was designed to do so.

The flat plate obtained in this way is then processed using a press or the like to form a thin box-like shape with a bottom wall 4.
A metal polishing tool 1 having an uneven shape is obtained.

The metal polishing tool 1 can be easily fitted onto the movable body 21 of the power polishing device 20. FIG. 4 exemplifies the case where it is fitted onto a rocking sander. In this case, by interposing, for example, double-sided tape or a hook and loop fastener between the inner surface of the metal polishing tool 1 and the outer surface of the movable body 21, it can be removably attached.

When the power polishing device 20 is started after being attached, the metal polishing tool 1 accurately follows the movement of the movable body 21. This is because the metal polishing tool 1 does not come loose in the vertical direction due to the double-sided tape or hook-and-loop fastener, and is also provided with a side wall 5 that abuts the side surface of the movable body 21 and is positioned. be. Therefore, even when polishing the object 30 by contacting it, there is no lateral displacement between the movable body 21 and the initial attachment state is maintained.

Since the polishing tooth 3 has a top surface 6 and a side surface 7, and the angle formed by these is an acute angle, it exhibits a scraping action and performs good polishing, making the surface of the object to be polished uniform and beautiful. I can finish it.

The metal polishing tool 1 includes a side wall 5, which is formed by being bent, so that it is usually connected to the bottom wall 4 by an arc. Therefore, when brought into contact with the object to be polished 30, the polishing teeth 3 from the outer circumferential portion of the bottom wall 4 toward the side wall 5 gradually stop contacting the object to be polished 30, so that the metal polishing It is easy to slide the tool, and it is extremely unlikely to get caught.

Since the bottom wall 4 is not flat but has an uneven shape, the polishing teeth formed in the convex portions strongly contact the object to be polished, and the polishing teeth formed in the concave portions contact the workpiece gradually weakly. For this reason, it is most suitable for rough finishing, and in particular can quickly polish relatively soft objects such as wood and styrofoam.

Since chips are temporarily stored in the concave portion of the bottom wall, clogging is less likely to occur and the polishing time can be extended.

Since the bottom wall is uneven, its strength can be increased.

Incidentally, the polishing teeth 3 of the metal polishing tool 1 are not limited to the substantially cylindrical shape as shown in FIG. 6. For example, the polishing teeth 3 may have a convex shape as shown in FIG. It may also be something that intersects and connects.

The arrangement of the polishing teeth 3 may follow a predetermined arrangement, but may also be arranged randomly.

The top surface 6 of the polishing tooth 3 may be a smooth surface as shown in FIG. 5, but it may also be a rough surface as shown in FIG. In this way, the polishing effect due to the rough surface is taken into account, so that even more excellent polishing can be performed. To obtain such a device, it can be easily manufactured by the method described above using a metal plate material with a rough surface.

If only the surface layer portion on which the abrasive teeth 3 are formed is heat-treated and hardened, the hardness of the abrasive teeth increases and good abrasive action can be exerted over a long period of time. In this case, only the surface layer is hardened, so cutting and
There is no problem with processing such as drilling and bending. Of course, after processing the shape, the surface layer or the entire surface may be hardened.

The bottom wall 4 of the metal polishing tool 1 may have an uneven shape with a continuous concave spherical surface and a convex spherical surface, but as shown in FIGS.
A corrugated plate shape may be used as shown in the figure.

As shown in FIG. 12, the bottom wall 4 may have an uneven shape that follows a large uneven curve and has small unevenness within the uneven curve.

Although not shown, the bottom wall 4 may have an uneven shape by combining large unevenness and small unevenness.

The side wall 5 is not limited to a straight shape, and may have an uneven shape like the bottom wall 4.

If the movable body 21 of the power polishing device 20 is equipped with a clamp mechanism, as shown in FIGS. A highly flexible mounting piece 10 made of synthetic resin or the like is attached to a fastener 1 such as a rivet.
Fix it according to 1. And the front and rear mounting pieces 1
0 and 10 are gripped and attached by a clamp mechanism provided on the movable body 21.

As the fastener 11, one as shown in FIG. 15 can also be used.

FIG. 16 shows the front and rear side walls 5, 5 of the metal polishing tool 1.
An example is shown in which the mounting pieces 10 are made by lengthening and bending the mounting pieces 10, but there is no problem in doing so.

The metal polishing tool 1 is not limited to the rectangular shape described above. For example, when it is attached to a rotary sander, it is shaped like a circular thin box as shown in FIG.

The side wall 5 of the metal polishing tool 1 may be formed continuously over the entire circumference of the bottom wall 4 as shown in FIG. 17, or may be partially interrupted as shown in FIG.

Furthermore, a through hole 12 may be provided as shown in FIG. 18, or a notch 13 may be provided as shown in FIG. 19. When such a so-called communication section is provided, chips are temporarily accommodated there, so that the polishing time can be extended.

However, in the case where the movable body 21 of the power polishing device 20 is equipped with a dust suction hole and the main body side is equipped with a dust suction fan, the through hole 12 of the metal polishing tool 1 is made to match the dust suction hole. If so, chips can be suctioned well.

Further, in the case of a power polishing device having a dust suction fan on the main body side and a skirt surrounding the movable body, a good dust suction effect can be obtained by using a metal polishing tool provided with a notch.

That is, when a metal polishing tool is brought into contact with an object to be polished, only the polishing teeth come into contact, and a gap is formed between the object to be polished and the base body, in which chips are accumulated. Thus, the chips are effectively sucked and discharged through the communication portions such as through holes and notches that pass through the base body 2. Above all,
Since the metal abrasive tool has rigidity, the above-mentioned voids are formed appropriately and the chips are guided well.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of a metal polishing tool according to an embodiment of the present invention. Figure 2 is the − of Figure 1.
Enlarged cross-sectional view. FIG. 3 is an enlarged sectional view of FIG. 1. FIG. 4 is a partially cutaway schematic diagram showing a state in which the metal polishing tool is mounted on a power polishing device, and FIG. 5 is an enlarged sectional view showing the shape of the polishing teeth. Figure 6 shows
FIG. 3 is an enlarged perspective view showing the shape of polishing teeth. FIG. 7 is an enlarged sectional view showing another shape of the polishing tooth. FIG. 8 is an enlarged perspective view showing still another shape of the polishing teeth. Figure 9 shows
An enlarged sectional view when the top surface of the polished tooth is roughened. FIG. 10 is a longitudinal sectional front view of a case where the bottom wall has corrugated irregularities. FIG. 11 is a longitudinal side view thereof. FIG. 12 is a longitudinal sectional view showing still another embodiment of the uneven shape of the bottom wall. FIG. 13 is a perspective view of a metal polishing tool provided with a mounting piece. FIG. 14 is an enlarged sectional view of the attachment portion between the metal polishing tool and the attachment piece. FIG. 15 is a partially cutaway plan view of the main part showing the case where the mounting piece is attached to a metal polishing tool using another fastener. Figure 16 shows
The perspective view when the front and rear side walls of a metal polishing tool are used as mounting pieces. FIG. 17 is a perspective view showing a circular metal polishing tool. FIG. 18 is a perspective view showing a metal polishing tool with through holes. FIG. 19 is a perspective view showing a metal polishing tool with a notch. 1... Metal polishing tool, 2... Base body, 3... Polishing tooth.

Claims (1)

[Scope of utility model registration request] A base body made of a rigid metal plate that has a thin box-like shape with an uneven bottom wall and a side wall formed around the bottom wall and can be fitted onto the movable body of a power polishing device, and a large number of base bodies integrally formed on the outer surface of the base body. A metal polishing tool comprising fine convex polishing teeth having a top surface and a side surface, the angle between which is acute.