JP2008080411A - Reinforced brush and method of deburring polishing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforced brush which can improve the uniformity of the density of the bunch of bristles and the polishing property, and further to provide a method of deburring polishing using the same reinforced brush. <P>SOLUTION: In the reinforced brush, a plurality of bristles are tied, and the bunch of the bristles is retained in a cylindrical body formed by a swingable coil spring, and a plurality of the bunches of the bristles are arranged at an arbitrary interval. The bunches of the bristles are retained in an un-crowded state at least at the head portions of the coil springs, and the coil springs are wound so as to form a triangular cross section shape or other polygonal cross section shapes at least at the head portion of the coil springs. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a strength reinforcing brush and a deburring / polishing method, and more particularly to a strength reinforcing brush represented by a wire brush and a deburring / polishing method.

  Due to the property of polishing an object to be polished, the polishing brush wears the brush portion due to use. In particular, a wire brush for polishing used for sheet metal repair or the like has a very short life because the object to be polished is hard and wear of the brush portion is extremely severe.

  To increase the strength of the brush part in order to reduce the degree of wear, the material of the brush should be made of a material with high hardness and rigidity. However, if the hardness and rigidity of the brush are increased too much, the workpiece will be worn or damaged. It has the problem that it ends up.

  Therefore, various means are employed to increase the strength of the brush without increasing the hardness and rigidity of the brush material (see Patent Documents 1 to 3, etc.).

The technique described in Patent Document 1 increases the strength of the waist of a brush by storing each of the brush bundles in a cylindrical body.
The technique described in Patent Document 2 reduces the wear of the brush portion by covering each brush with a reinforcing film.
Furthermore, the technique described in Patent Document 3 increases the strength of the brush by winding or knitting a synthetic fiber filament yarn in a spiral shape around the outer peripheral surface of the brush bundle.

  However, although all the techniques of Patent Documents 1 to 3 increase the strength of the brush portion of the brush, the elasticity and suppleness of the brush are hindered, which is not satisfactory in terms of abrasiveness.

  In order to solve the above-described conventional problems, the inventor bundled a plurality of brushes and planted a plurality of brush bundles housed in a swingable coil spring at arbitrary intervals to strengthen the strength reinforcing brush. Was previously proposed (see Patent Document 4).

JP 2002-254277 A JP 2002-204719 A JP-A-9-294632 Japanese Patent No. 3822872

  As a result of further research on the previously proposed technique, the present inventor found that when the coil spring and the brush bundle swing and receive frictional resistance during deburring / polishing, as shown in FIG. The brush bundle 3 arranged uniformly in the spring 4 is separated on both sides (up and down in the drawing) of the brush bundle 3 in the polishing direction (indicated by arrows) at the time of polishing (B) and (C). It has been found that a cavity is formed in the central portion in the coil spring 4.

  The separation of the brush bundle in the coil spring and the hollowing of the central portion result in a portion where the density of the brush bundle housed in the coil spring is high and low, which is still an improvement in terms of abrasiveness. It turns out that there is room.

  Accordingly, an object of the present invention is to provide a strength-reinforcing brush having improved brushability and a deburring / polishing method using the same, in which the density of the brush bundle is made uniform.

  The present invention for solving the above problems has the following configuration.

1. In a strength reinforcing brush in which a plurality of brush bundles are bundled at a desired interval and bundled with a plurality of brush bundles which are bundled with a plurality of brushes and housed in a cylindrical body formed of a swingable coil spring.
The brush bundle is stored in a non-congested state at least at the head of the coil spring,
The winding shape of the coil spring is a triangle or other polygons at least at the head;
A strength-reinforcing brush.

2. 2. The strength-reinforcing brush according to 1 above, wherein the diameter of the coil spring gradually expands from the root of the coil spring toward the tip.

3. 2. The strength-reinforcing brush according to 1 above, wherein the diameter of the coil spring gradually expands from the root of the coil spring to a position excluding the head.

4). The head portion of the coil spring has a close coil portion in which an adjacent coil portion is in close contact,
The other portion of the coil spring is a coarse coil portion in which adjacent coil portions are separated from each other.

5. (1) The close-contact coil portion of the coil spring, or (2) the close-contact coil portion of the coil spring and a part of the coarse coil portion continuous to the close-contact coil portion are rubber, elastomer, thermoplastic resin, or thermosetting. 5. The strength-reinforcing brush as described in 4 above, which is a resin that is covered with a soft resin (hereinafter referred to as “soft resin”).

6). 6. The strength-reinforcing brush as described in 4 or 5 above, wherein the contact coil portion is composed of 2 to 7 winding coils.

7. The strength reinforcing brush according to any one of the above 4 to 6, wherein the coarse coil portion is composed of at least one coil.

8). The strength reinforcing brush according to any one of the above 1 to 7, wherein the brush bundle is configured by bundling at least two types of brushes having different diameters.

9. Each of the brush bundles is planted so that adjacent heads of the coil springs that store the plurality of brush bundles to be planted at arbitrary intervals are in contact with each other of the triangles and other polygonal surfaces of the head. The strength-reinforcing brush according to any one of 1 to 8 above.

10. Using the strength reinforcing brush according to any one of 1 to 9 above, a brush bundle obtained by bundling a plurality of brushes of the strength reinforcing brush is deburred and polished while being swung by a coil spring surrounding the brush bundle. A deburring / polishing method characterized by the above.

  ADVANTAGE OF THE INVENTION According to this invention, the density of a brush bundle can be equalize | homogenized, the intensity | strength reinforcement brush which improved abrasiveness, and the deburring and grinding | polishing method using this can be provided.

According to the first aspect of the present invention, since the winding shape of the coil spring is a triangle or other polygon, the brush bundle in the coil spring is separated so as to escape to both sides in the polishing direction during polishing, and there is a gap in the central portion. It does not occur, and a gap is generated in front of the polishing direction. This is because when the coil spring is cylindrical, the bunch of brushes escapes outward along the round inner wall formed by the inside of the coil spring, so that it separates on both sides in the polishing direction. By making the winding shape a triangle or other polygon, each corner of the triangle or other polygon acts as a stopper to prevent each brush moving in the coil spring from escaping to both sides of the polishing direction. is there.
Therefore, the density of the brush bundle housed in the coil spring does not increase or decrease, and polishing with a uniform density becomes possible.

  According to the invention shown in claim 2 or 3, since the distance between the brushes at the tip portion of the brush bundle can be taken, each brush comes into contact with the surface to be polished like a sharp cutting edge by point contact. At the same time, each brush can be swung without being restricted in movement in the 360-degree circumferential direction, so that the polishability is further improved.

According to the fourth aspect of the present invention, during the polishing operation, not only simple reciprocation or rotation in one direction but also a sharp swing while warping in a 360-degree circumferential direction starting from the tip of the brush of the brush bundle. The contact coil part can prevent the tip of the brush of the brush bundle from jumping out from the side of the coil spring against dynamic movement and irregular rotational movement, and the coarse coil part can be expanded and contracted. Since the brush bundle is softly reinforced and is supplementarily reinforced in a so-called double-waist state in which the so-called waist of the brush bundle and the waist of the coil part itself are added, Therefore, the breakage of the brush of the brush bundle is suppressed, and the point contact polishing at the sharp tip of the brush having the highest polishing efficiency and the highest efficiency in polishing can be performed in a state where the surface to be polished is in good condition. That is, the brush bundle is prevented from being in a state of being shattered during the polishing operation, and the tip of the brush bundle is laid down so that the surface to be polished is boiled not at the tip of the brush bundle but at the abdomen. This can be suppressed.
Therefore, it becomes possible to clean every corner when cleaning objects with complicated shapes and structures such as deep tire grooves, bath tile joints, bellows-like objects, and barbed-like objects.

  According to the fifth aspect of the present invention, it is possible to prevent damage to the target article during use without suppressing effects as a brush such as a cleaning effect and a polishing effect. Further, by covering the sharp portion of the coil spring winding end portion generated in the manufacturing process of the coil spring with a soft resin, there is also an accompanying effect that the target article can be prevented from being damaged by the sharp portion. It is done.

  According to the invention shown in claim 6, it is possible to prevent the tip of the brush of the brush bundle from jumping out from the side of the coil spring.

  According to the seventh aspect of the present invention, when the close contact coil portion of the spring coil is covered with the soft resin, at least one winding portion is for preventing the soft resin from being peeled off. And / or since it serves as a stopper for preventing falling off, it is possible to prevent the soft resin from being peeled off or dropped off.

  According to the eighth aspect of the invention, the large diameter brush that cleans and polishes the rough portion and the small diameter brush that cleans and polish the fine portion can be polished while assisting each other, so that the polishing property is high. It becomes good.

  According to the ninth aspect of the present invention, even when a plurality of brush bundles housed in the coil spring are closely aligned and planted, there is no gap between the heads of adjacent coil springs. Since they can be brought into contact with each other, the density of the brush bundle does not increase or decrease, and polishing with a uniform density becomes possible. Therefore, when a plurality of brush bundles are planted in a state where a plurality of cylindrical coil springs are arranged, a gap generated between adjacent coil springs can be eliminated.

  According to the invention shown in claim 10, it is possible to perform deburring / polishing work in detail without damaging the target article.

  1 is a side view showing an embodiment of a strength reinforcing brush according to the present invention, FIG. 2 is an enlarged perspective view of a brush bundle and a coil spring, FIG. 3 is an enlarged side view showing an expanded configuration of the coil spring, and FIG. 5 is an enlarged side view showing another embodiment of the coil spring, FIG. 5 is an enlarged side view of the brush, FIG. 6 is an enlarged plan view of a main part for explaining the state of the coil spring and the brush bundle at rest and during polishing, and FIG. FIG. 8 is an enlarged plan view of a main part showing a state in which the heads of adjacent coil springs are in surface contact with each other, FIG. 8 is an enlarged plan view of a main part showing another embodiment of FIG. 7, and FIG. It is a principal part enlarged plan view explaining the state at the time of stationary and grinding | polishing of a brush bundle.

  In FIG. 1, a strength reinforcing brush 1 according to the present invention is a swingable swivel that is a tubular body that stores a plurality of brush bundles 3, 3, 3. Coil brush 4 and brush base body 5 on which a plurality of bundles of brush bundles 3 housed in coil spring 4 are planted at an arbitrary interval.

  The brush bundle 3 is formed by half-folding one of the normally two brushes 2 per bundle and inserting the bent portion 2A (see FIG. 5) into a planting hole formed in the brush base 5. It is the structure which becomes the brush bundle 3 of about 60 brushes 2 per bundle. When the brush bundle 3 is implanted into the brush base 5, the linear material is inserted into all the bent portions 2A of the brushes 2 that bind the root portion of the brush bundle 3 with the linear material, and the end of the linear material is further inserted. By inserting it into the planting hole of the brush base 5 in a state of being folded upward, the upward end of the linear material may serve as a stopper for preventing the slipping in the planting hole, as will be described later. The coil spring 4 of the present invention may play this role.

  As a material of the brush 2 of the polishing brush 1, there are generally a metal wire and a non-metal wire, and as the metal wire, an iron-based metal wire (piano wire, stainless steel wire, etc.) and a non-ferrous metal wire (brass wire), Non-metallic wires include plant fibers (tampico, coir, etc.), animal fibers (pig hair, horse hair, goat hair, etc.) and synthetic fibers (nylon fibers (including abrasives), vinyl chloride fibers, meta-aramid fibers ( Abrasives may also be mixed), polypropylene, etc.).

  Examples of the thickness of the brush 2 include a diameter of 0.1 to 1.0 mm, which is a typical strength reinforcing brush for deburring and polishing represented by this type of wire brush. A brush 2 having an appropriate diameter can be used as appropriate.

  Moreover, the brush 2 can use not only the same material and the same diameter but also a combination of two or more different materials and different diameters.

  When the brush 2 is a metal wire, the coil spring 4 is preferably a coil spring 4 of the same quality as or close to that of the metal wire. When is a non-metallic wire, a metal coil spring 4 coated with a synthetic resin is preferable. It is preferable that the material of the brush 2 of the brush bundle 3 and the material of the coil spring 4 are substantially the same without affecting the polishing.

  As shown in FIG. 2, the upper part including the tip of the brush bundle 3 protrudes from the upper end (head) of the coil spring 4, and the extent of such protrusion is the tip of the brush bundle 3 with respect to the length L of the brush bundle 3. For example, when the brush 2 is made of stainless steel, the length 1 of the upper portion including the brush bundle 3 is preferably 3 to 10 mm when the length L of the brush bundle 3 is 15 to 50 mm, and L is 15 to 30 mm. 1 is particularly preferably 5 to 8 mm, and when the brush 2 is made of brass, when the length L of the brush bundle 3 is 15 to 50 mm, l is preferably 3 to 9 mm, and L is 15 to When 30 mm, l is particularly preferably 5 to 7 mm.

  At least at the head 4C of the coil spring 4, the brush bundle 3 is housed in a non-dense state, that is, the brush bundle 3 is housed in the coil spring 4 so that the brush bundle 3 can swing. As will be described later, by configuring the diameter of the coil spring 4 so that the head portion 4C is larger than the root portion 4A, the density of the brush bundle 3 at the head portion 4C becomes smaller than the root portion 4A portion.

  It is preferable that at least a part of the brush bundle 3 and the coil spring 4 that accommodates the brush bundle 3 are in close contact with each other, and it is particularly preferable that the root part on the brush base 5 implantation side is in close contact. Although influenced by the flexibility of the coil spring 4, the flexibility and flexibility of the brush 2 as a brush can be changed by the degree of close contact with the brush bundle 3. That is, when the coil springs 4 having the same hardness and flexibility are compared, it is harder for the brush bundle 3 to be accommodated to be more closely attached.

  The coil spring 4 has a triangular shape such as a triangle at least at the head 4C. The triangle and other polygons are preferably substantially regular triangles as shown in FIGS. 2, 6 and 7, but may be substantially squares as shown in FIG. Further, it may be another triangle such as an isosceles triangle or a right triangle (for example, the shape of the head 4C of the coil spring 4 at the left and right ends in FIG. 7), or may be another rectangle such as a rectangle, a parallelogram, or a trapezoid. However, other polygons such as a pentagon may be used. The triangular and other polygonal coil springs 4 can be formed by using a publicly known forming machine which is a forming machine for deformed coils or the like. The portion excluding the head 4C may have the same winding shape as that of the head 4C, that is, a triangle or other polygons, or other shapes, that is, a circle or an ellipse, May be triangular or other polygons of different shapes.

  The coil spring 4 may be a cylindrical body having the same diameter from the root portion 4A to the tip portion 4B, but preferably the tip from the root portion 4A as shown in FIG. 1, FIG. 2, FIG. 3 (A) and FIG. That is, it gradually expands in the direction of the part 4B, or gradually expands from the root part 4A to a position excluding the head part 4C as shown in FIG. Note that “gradually expanding” is literally not only in a state of gradually expanding as shown in FIG. 3A, but also by forming a step 4D in the middle as shown in FIG. 3C. The present invention also includes a configuration that expands automatically.

  For example, when the diameter of the root portion 4A is 2.5 mm, the diameter of the tip portion 4B is preferably about 3.5 mm.

  When the brush bundle 3 and the coil spring 4 containing the brush bundle 3 are implanted in the brush base body 5, the root portion of the brush 2 that is half-folded is bent in order to prevent the brush 2 from falling off the brush bundle 3. The coil spring is inserted into the planting hole of the brush base 5 with the spiral end of the root portion of the coil spring 4 inserted into the portion 2A (see FIG. 4) and the end of the coil spring 4 bent upward. It is preferable that the upward end of 4 serves as a stopper for preventing slipping in the planting hole.

  In this embodiment, the coil spring 4 is a close coil portion in which the head portion 4C is in close contact with the adjacent coil portion, and the other portion is a coarse coil portion in which the adjacent coil portion is separated. However, a part or all of the part other than the head 4C may be a contact coil part.

  The close contact coil portion of the head 4C of the coil spring 4 is preferably in close contact with 2 to 7 turns, and more preferably with close contact with 3 to 5 turns. Further, when the portion other than the head 4C is a coarse coil portion, the coarse coil portion is preferably composed of at least one turn.

  Moreover, as shown in FIG. 4, it is preferable that the coil spring 4 coat | covers a close coil part which is the head 4C, and a part of coarse coil part which continues to this close coil part with a soft resin. Compared to the case where only the close contact coil portion, which is the head portion 4C, is covered by forming the cover portion 6 made of a soft resin including not only the close contact coil portion but also a part of the coarse coil portion continuous to the close contact coil portion. Thus, it is possible to prevent the covering portion 6 from being peeled off or dropped off when a load such as polishing is applied. That is, by covering up to a part of the coarse coil portion that is continuous with the close-contact coil portion, the covered portion of the coarse coil portion serves as a stopper for preventing the covering portion 6 from peeling off or falling off.

  The portion of the coarse coil portion covered with the soft resin is preferably at least one turn continuous to the close contact coil portion, but may be one third or more of one turn, and may be about two turns. Is enough.

  The portion covered with the soft resin is not limited to the close contact coil portion that is the head portion 4C shown in FIG. 4 and a part of the coarse coil portion that continues to the close contact coil portion, but the close contact coil portion that is the head portion 4C. It may be only, or the contact coil part and the coarse coil part may be all.

  The covering portion 6, which is a covering with a soft resin, may be wound or knitted with a filament yarn made of a soft resin fiber around the wire of the coil portion, or may be soaked in a molten soft resin liquid.

  The coil portion of the wire material can be covered with multifilaments such as spiral winding in which right-handed and left-handed overlap, right-handed or left-handed spiral winding, and braided knitting. The filament yarn may be a single type of filament yarn applied to the wire of the coil portion, or may be applied in combination with another type of filament yarn. In combination with other types, when the applied mode is the above-described overlapping spiral winding, one is right-handed and the other is left-handed. In the case of braided knitting, braided knitting with two types of filament yarns may be used. .

  In the case of coating with a soft resin resin fiber, it may be fixed with an adhesive such as a nylon adhesive. Examples of the adhesive include a solution in which about 15% of methoxymethyleneated nylon is dissolved in methanol. The adhesive can be applied by appropriate means such as dipping and coating. Generally, after the wire material of the coil portion coated with the multifilament is immersed in the solution, it is dried and cured at about 130 to 150 ° C. What is necessary is just to fix the filament yarn coated and coated.

  The soft resin used in the present invention is a resin that is a rubber, an elastomer, a thermoplastic resin, or a thermosetting resin and is soft (soft resin). In particular, the soft resin is preferably at least one of rubber or elastomer or a mixture thereof.

  The thermosetting resin used in the present invention includes general-purpose thermosetting resins [phenol resins, amino resins (urea resins, melamine resins), epoxy resins, unsaturated polyester resins, diallyl phthalate resins], special thermosetting resins. (Polyimide resin, silicone resin), thermosetting elastomer (polyurethane, silicone elastomer, IR, BR, SBR, EPDM, IIR, CR, CHR, CHC, ACM, fluorine rubber) and composite materials (sheet molding compound, bulk molding compound) ) And the like selected from among them.

  Examples of the thermoplastic resin used in the present invention include general-purpose thermoplastic resins (polyethylene, polypropylene, polyvinyl chloride, polystyrene, ABS resin, AS resin, polymethyl methacrylate, polyvinyl acetate, polyvinylidene chloride, fiber base resin, etc. ), General-purpose engineering resins [nylon (polyamide), polyacetal (polyoxymethylene), polycarbonate, modified polyphenylene ether, polybutylene terephthalate, polyethylene terephthalate, etc.], and heat-resistant engineering resins (polyphenylene sulfide, polysulfone, polyethersulfone, polyetherether) Such as ketone, polyetherketone, polyacrylate, liquid crystal polymer, polyamideimide, polytetrafluoroethylene, etc.) And the like.

  As shown in FIG. 7, a plurality of brush bundles 3 housed in the coil spring 4 having the above configuration are arranged on the brush base 5 (15 pieces in FIG. The adjacent heads 4C of the coil springs 4 that house 3 can be planted so that the triangular faces of the head 4C are in contact with each other. That is, even when each coil spring 4 is planted in close alignment so that adjacent heads 4C are in contact with each other at their heads 4C, Since they can be brought into contact with each other without any gaps therebetween, the density of the brush bundle 3 does not increase or decrease, and a strength reinforcing brush having a uniform density can be obtained. Therefore, it is possible to polish with uniform density. In the present embodiment shown in FIG. 7, the shape of the heads 4 </ b> C of six (3 at the right end and 3 at the left end) coil springs 4 positioned at both left and right ends is a right triangle, and the heads of the other coil springs 4. The shape of the part 4C is an equilateral triangle or an isosceles triangle.

  The winding shape of at least the head 4C of the coil spring 4 can be a square as shown in FIG. 8, and even in the case of a quadrangle, the adjacent heads 4C of the coil spring 4 are connected to each other. They can be planted side by side so that each side of the quadrangle touches. That is, as in the case of the triangle in FIG. 7, even when each coil spring 4 is planted side by side in a closely aligned state so that the adjacent heads 4 </ b> C are in contact with each other at the head 4 </ b> C, adjacent coils are planted. Since the contact between the heads 4 </ b> C of the springs 4 can be made without generating a gap, the density of the brush bundle 3 does not increase or decrease, and the strength reinforcing brush has a uniform density. Can do. Therefore, it is possible to polish with uniform density. In FIG. 8, 21 (7 × 3 rows) coil springs 4 are arranged.

  In addition, as described above, the winding shape of the coil spring 4 is a triangle or other polygons at least at the head 4C, and the triangles and other polygons are substantially regular triangles or squares that are substantially squares in the above-described embodiment. It is not limited to other triangles such as an isosceles triangle and a right triangle, other rectangles such as a rectangle, a parallelogram, and a trapezoid, and other polygons such as a pentagon.

  The strength reinforcing brush to which the present invention can be applied is not limited to manual operation, and may be an automatic brush, and can be applied to, for example, the brushes described in the drawings of Patent Document 1 (particularly, FIGS. 2 and 7), Further, the shape of the brush base is not limited.

  If the strength reinforcing brush having the above configuration is used, a bunch of brushes bundled with a plurality of brushes is swung by a coil spring surrounding the brush bundle, and the deburring and polishing operations are performed in detail without damaging the target article. It can be carried out.

The side view which shows one Example of the strength reinforcement brush which concerns on this invention Enlarged perspective view of brush bundle and coil spring Enlarged side view showing the expanded configuration of the coil spring An enlarged side view showing another embodiment of the coil spring Expanded side view of the brush The principal part enlarged plan view explaining the state at the time of stationary and grinding | polishing of a coil spring and a brush bundle Main part enlarged plan view showing a state in which the heads of adjacent coil springs are in surface contact with each other FIG. 7 is an enlarged plan view of the main part showing another embodiment of FIG. An enlarged plan view of the main part for explaining the state of the coil spring and the brush bundle of the previously proposed technology at rest and during polishing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Polishing brush 2 Brush 2A Bending part 3 Brush bundle 4 Coil spring 4A Root part 4B Tip part 4C Head part 4D Step part 5 Brush base body 6 Covering part

Claims (10)

In a strength reinforcing brush in which a plurality of brush bundles are bundled at a desired interval and bundled with a plurality of brush bundles which are bundled with a plurality of brushes and housed in a cylindrical body formed of a swingable coil spring.
The brush bundle is stored in a non-congested state at least at the head of the coil spring,
The winding shape of the coil spring is a triangle or other polygons at least at the head;
A strength-reinforcing brush. 2. The strength reinforcing brush according to claim 1, wherein the diameter of the coil spring gradually expands from the root of the coil spring toward the tip. The strength reinforcing brush according to claim 1, wherein the diameter of the coil spring is gradually expanded from a root portion of the coil spring to a position excluding the head. The head portion of the coil spring has a close coil portion in which an adjacent coil portion is in close contact,
The strength reinforcing brush according to any one of claims 1 to 3, wherein the other part of the coil spring is a coarse coil part in which an adjacent coil part is separated. (1) The close-contact coil portion of the coil spring, or (2) the close-contact coil portion of the coil spring and a part of the coarse coil portion continuous to the close-contact coil portion are rubber, elastomer, thermoplastic resin, or thermosetting. The strength-reinforcing brush according to claim 4, wherein the strength-reinforcing brush is a resin that is covered with a soft resin (hereinafter referred to as "soft resin"). The strength-reinforcing brush according to claim 4 or 5, wherein the contact coil portion is composed of a coil having 2 to 7 turns. The strength reinforcing brush according to any one of claims 4 to 6, wherein the coarse coil portion is composed of at least one coil. The strength reinforcing brush according to any one of claims 1 to 7, wherein the brush bundle is configured by bundling at least two types of brushes having different diameters. Each of the brush bundles is planted so that adjacent heads of the coil springs that store the plurality of brush bundles to be planted at arbitrary intervals are in contact with each other of the triangles and other polygonal surfaces of the head. The strength reinforcing brush according to any one of claims 1 to 8, wherein Using the strength reinforcing brush according to any one of claims 1 to 9, a brush bundle obtained by bundling a plurality of brushes of the strength reinforcing brush is deburred and polished while being swung by a coil spring surrounding the brush bundle. A deburring / polishing method characterized by that.

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