JP2005199371A - Brush-like grinding wheel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brush-like grinding wheel which can be efficiently manufactured even when a linear abrasive material formed by curing a large number of inorganic filaments with a resin matrix is used and by which various types of brush-like grinding wheel can be manufactured. <P>SOLUTION: A wire rod sheet 2 is composed of a first wire rod group 10, a second wire rod group 20, and first and second coupling sheets 30, 40 for coupling root parts 11, 21 of the wire rod groups 10, 20 in the brush-like grinding wheel 1. The first and second wire rod groups 100 are held to an abrasive material holding body 3 in a state of being arranged in the same direction as a result of folding the coupling sheets 30, 40 into a cross-sectional U-shape. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a brush-like grindstone used for deburring and surface finishing.

  Conventionally, brushes used for deburring and polishing work include metal wire wires, nylon wires containing abrasive grains, and the like in a brush shape. However, since the metal wire wire has the same hardness as the metal as the workpiece, there is no grinding force, and since it is processed by impact, it is broken and splatters. On the other hand, the nylon wire with abrasive grains contains an abrasive material and has a polishing power compared to metal wire wires, but it is weak and has an abrasive content of 30%. The ability of is insufficient. In dry processing, nylon is melted by heat, while wet processing has a problem of low stiffness. Furthermore, the metal wire brush and the nylon brush with abrasive grains also have a problem that the brush is easily deformed with processing. For these reasons, the conventional brushes have the drawback that deburring and polishing operations (or surface finishing) cannot be automated.

  In recent years, as a brush-like grindstone with excellent grinding power, one using a linear abrasive obtained by curing an aggregate of a large number of alumina long fibers with a resin matrix such as an epoxy resin has been devised. (For example, patent document 1).

Since such a wire material abrasive material contains, for example, 70% or more of the abrasive material, it is firm, has a high polishing power at the tip, and does not deform. Therefore, highly accurate deburring and surface finishing can be performed, and such processing can be automated.
JP 2000-94344 A

  In general, conventional brushes such as metal wire brushes and nylon brushes with abrasive grains are manufactured by bending the central portion of the wire in two directions and fixing the root portion thereof. However, a linear abrasive obtained by curing an inorganic long fiber such as an alumina long fiber with a resin matrix is weak in flexibility, and therefore, it is broken when it is bent. For this reason, it is impossible to produce a brush-like grindstone by folding the center of the linear abrasive material in half and holding the folded portion with the abrasive material holder. Therefore, when manufacturing a brush-like grindstone from a linear abrasive material using inorganic long fibers such as alumina long fibers, as shown in FIG. 5, an embedded hole 201 is formed on the abrasive material holding body 200 side. In addition, after aligning the base end portion 101 of the linear abrasive 100, it is unavoidable to embed it in the embedding hole 201 and fix it with an adhesive. For this reason, the brush-like grindstone provided with the linear abrasive 100 using inorganic long fibers takes a lot of labor to produce, and the brush-like grindstone that can be produced using such a linear abrasive 100. Has the problem that its type is limited.

  In view of the above problems, the object of the present invention is to efficiently manufacture even when a linear abrasive material obtained by curing a large number of inorganic long fibers with a resin matrix and to manufacture various types of materials. Is to provide a simple brush-like grindstone.

  In order to solve the above problems, in the present invention, a large number of linear abrasives obtained by curing a large number of inorganic long fibers with a resin matrix, and an abrasive that holds the root portions of the multiple linear abrasives. In the brush-like grindstone having a material holder, the plurality of linear abrasives are first wire members whose root portions are bonded and fixed to a flexible connecting member and extend from the connecting member in a predetermined direction, respectively. The first and second wire rod groups are characterized in that the root portion is held by the abrasive material holding body in a state where the connecting member is deformed. . In the present invention, the “first wire group and the second wire group” are connected to the center of the sheet-like or bundle-like wire-like abrasives in addition to the case where they are each composed of separate wire-like abrasives. This also includes the case where the sheet is bonded and fixed, and one side of the sheet is the first wire group and the other side is the second wire group.

  In the present invention, the inorganic long fiber is, for example, an alumina long fiber, a carbon long fiber, a silicon carbide long fiber, or a glass long fiber.

  In the present invention, in the first and second wire group, for example, the linear abrasive material is flatly arranged in such a direction that the distal ends extend in opposite directions, and the connecting member is arranged in the flat shape. It is a sheet that is adhesively fixed to the root portion in a state where it overlaps the root portion of both the first and second wire group. With such a configuration, by bending the connecting member, the tip of the linear abrasive can be directed in a desired direction, so that a brush-like grindstone such as a channel brush or a wheel brush can be manufactured.

  In this case, it is preferable that the connecting member is a pair of sheets that are bonded and fixed to the base portion so as to sandwich the base portions of both the first and second wire groups from both sides. If comprised in this way, drop-off | omission of a linear abrasive can be prevented reliably.

  In the present invention, the abrasive material holding body includes an abrasive material holding concave portion into which a root portion of the plurality of linear abrasive materials is inserted and fixed, and the first and second wire material groups include, for example, the connection The members are aligned in a state extending in the same direction by being bent into a U shape or a V shape.

  In the present invention, in the abrasive material holding body, an abrasive material holding concave portion into which a root portion of the plurality of linear abrasive materials is inserted and fixed opens in a circumferential groove shape outward in the radial direction, and the connecting member is The first and second wire groups are bent in a U-shape or a V-shape so as to extend in the same direction, and the linear abrasive is annularly extended radially toward the outer peripheral side. In this state, it is also possible to adopt a configuration in which the root portions of the multiple linear abrasives are held in the abrasive holding recesses.

  In the present invention, the connecting member is located at a position corresponding to the opening edge of the abrasive material holding recess, and the abrasive material holding recess is narrowed by a method such as caulking with respect to the opening edge, so that the plurality of It is preferable that the root portion of the linear abrasive is held inside. If comprised in this way, since a connection member functions as a buffer material with respect to the stress by crimping, a linear abrasive will only bend loosely and will not be broken and will not come off. Moreover, it is preferable to hold | maintain and adhere | attach a linear abrasive material by methods, such as caulking with respect to the part in which the said connection member is located.

  In the present invention, the concave portion for holding the abrasive material may have an opening portion with respect to an opening edge being narrowed to hold the root portions of the plurality of linear abrasive materials inside, and in this case, the connecting member is bent. It is preferable that a retaining member is disposed inside the portion. If comprised in this way, even if it employ | adopts the structure which narrows the opening part of the recessed part for abrasive | polishing material holding | maintenance and hold | maintains a linear abrasive by methods, such as caulking, a linear member does not fall out from the recessed part for abrasive | polishing material holding .

  The brush-like grindstone of the present invention includes a linear abrasive material in which a large number of inorganic long fibers such as alumina long fibers are cured with a resin matrix, and thus has a high polishing power, and the linear abrasive material Does not deform. Therefore, highly accurate deburring and surface finishing can be performed, and such processing can be automated. In addition, since the linear abrasive using inorganic long fibers is poor in flexibility, it cannot be bent and held on the abrasive holder, but in the present invention, the linear abrasives are at their roots. Since the portion is bonded and fixed to the flexible connecting member, the root portion can be held by the abrasive material holding body while being deformed by the connecting member and directing the linear abrasive material in a desired direction. it can. Therefore, even when a linear abrasive material obtained by curing a large number of inorganic long fibers with a resin matrix, a brush-like grindstone can be efficiently produced, and various types of brush-like grindstones can be produced.

[Embodiment 1]
FIG. 1 is an explanatory diagram showing a configuration of a brush-like grindstone according to Embodiment 1 of the present invention. 2A and 2B are explanatory diagrams of a wire sheet used in the brush-like grindstone shown in FIG. 1 and an explanatory diagram of a state in which the wire sheet is mounted on an abrasive material holding body.

  As shown in FIG. 1, the brush-like grindstone 1 of the present embodiment is a channel brush, and includes a wire sheet 2 and an abrasive material holding body 3 that holds the wire sheet 2. The wire sheet 2 includes a first wire group 10, a second wire group 20, and first and second connection sheets 30 and 40 (connections) connecting the base portions 11 and 21 of the wire groups 10 and 20. Member). The 1st and 2nd wire rod group 100 is arranged in the state extended in the same direction because the connection sheets 30 and 40 were bent by the cross-sectional U shape.

  As shown in FIG. 2A, in the wire sheet 2, each of the first and second wire groups 10 and 20 is a resin matrix such as an epoxy resin or a silicone resin in an aggregate of a large number of alumina long fibers. A large number of linear abrasives 100 impregnated and cured are arranged in a flat shape, and in both the first and second wire groups 10 and 20, the multiple linear abrasives 100 are root portions. 11 and 21 are arranged in such a direction that the distal end sides 12 and 22 extend in opposite directions with a predetermined interval therebetween.

  The first and second connecting sheets 30 and 40 are made of rectangular paper, cloth, rubber, or the like, with the base portions 11 and 21 of the first and second wire groups 10 and 20 sandwiched from above and below, or End portions 31, 32, 41, 42 on the long sides of the connecting sheets 30, 40, which are sheets made of flexible resin, and overlap the base portions 11, 21 of the first and second wire groups 10, 20, The base portions 11 and 21 of the first and second wire groups 10 and 20 are fixed with an adhesive such as an epoxy resin or a silicone resin.

  As shown in FIG. 2B, the abrasive material holding body 3 is a metal plate bent in a U-shaped cross section, and a groove-shaped abrasive material holding recess 60 is formed inside thereof. The length dimension of the recess 60 for holding the abrasive material is the same as the length dimension of the wire sheet 2, and the groove width is obtained by bending the wire sheet 2 into a U-shaped cross section at the first and second connecting sheets 30 and 40. This is a dimension in which the bent portion can be inserted. The depth dimension of the recess 60 for holding the abrasive is such that the end portions 31, 32, 41, 42 of the connecting sheets 30, 40 are slightly exposed upward from the groove opening 61 in a state where the wire sheet 2 is bent and attached. It is.

  In order to manufacture the brush-like grindstone 1 shown in FIG. 1 using the abrasive material holding body 3 and the wire sheet 2 having such a configuration, for example, as shown in FIG. After the wire sheet 2 is separately bent into a U-shaped cross section, and a retaining member 50 made of a resin or metal core is inserted inside the wire sheet 2 bent into a U-shaped cross section, the wire The sheet 2 and the retaining member 50 are inserted into the abrasive holding recess 60 of the abrasive holder 3 and, thereafter, as shown by the arrow A, the opening edge of the abrasive holding recess 60 is crimped. Thus, the groove opening 61 is narrowed, and the brush-like grindstone 1 shown in FIG. 1 is manufactured. If necessary, the wire sheet 2 may be held and fixed by caulking with respect to the opening edge of the abrasive holding recess 60.

  Moreover, in order to manufacture the brush-like grindstone 1 shown in FIG. 1 using the abrasive material holding body 3 and the wire material sheet 2, the wire material sheet 2 and the retainer are provided on the abrasive material holding body 3 made of a flat metal plate. The members 50 are stacked, and in this state, as shown in FIG. 2 (B), the abrasive material holding body 3 made of a flat metal plate and the wire sheet 2 so as to sandwich the retaining member 50 are U-shaped in cross section. The brush-shaped grindstone 1 shown in FIG. 1 may be manufactured by narrowing the groove opening 61 by performing crimping on the opening edge of the abrasive-holding recess 60 after bending into a shape.

  As described above, the brush-like grindstone 1 of the present embodiment uses the linear abrasive 100 obtained by solidifying a large number of alumina long fibers with an epoxy resin or a silicone resin. Since the material 100 is not deformed, it is suitable for high-precision deburring and surface finishing, and these processes can be automated.

  Moreover, since the brush-like grindstone 1 of this embodiment bends the wire sheet 2 at the portions of the flexible connecting sheets 30 and 40, the wire sheet 2 can be easily folded in two and held on the abrasive material holding body 3. it can. Therefore, even when a linear abrasive material obtained by curing a large number of inorganic long fibers with a resin matrix is used, it can be efficiently produced.

  Furthermore, in the brush-like grindstone 1 of the present embodiment, the opening edge of the abrasive material holder 3 is formed on the outer first connecting sheet 30 in the groove opening 61 narrowed by caulking with respect to the opening edge of the abrasive material holding recess 60. It is in contact. For this reason, since the connection sheet 30 functions as a cushioning material between the abrasive material holding body 3 and the wire material groups 10 and 20, the wire material groups 10 and 20 are not broken, so the wire material sheet 2 is retained by the abrasive material. It can be fixed with caulking against the body 3. Further, in the groove opening 61 narrowed by caulking with respect to the opening edge of the abrasive material holding recess 60, the second connecting sheet 40 functions as a buffer material between the wire groups 10 and 20. Therefore, since the wire group 10 and 20 are not broken, the wire sheet 2 can be fixed by caulking against the abrasive material holding body 3.

[Embodiment 2]
FIG. 3 is an explanatory view showing the configuration of the brush-like grindstone according to Embodiment 2 of the present invention.

  As shown in FIG. 3, the brush-like grindstone 1 </ b> A of the present embodiment is a wheel brush in which the abrasive material holder 3 is bent in an annular shape in the channel-type brush-like grindstone 1 configured as shown in FIG. 1. In the holding body 3, the abrasive material retaining recess 60 in which the root portions of a large number of the linear abrasive materials 10 are inserted and fixed is opened in a circumferential groove shape outward in the radial direction. Although not shown in the figure inside the abrasive material holding body 3, as described in the first embodiment, the connection sheets 30 and 40 have the first and second wire groups 10 and 20 in the same direction. In the same manner as the abrasive material holder 3, the linear abrasive material 10 is bent in an annular shape so as to extend radially toward the outer peripheral side. Since other configurations are the same as those of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted.

  In manufacturing the wheel-type brush-shaped grindstone 1A having such a configuration, for example, the channel-type brush-shaped grindstone 1 shown in FIG. 1 is bent into an annular shape between the upper and lower flange portions 71 of a disk shape. Then, the edge parts of the abrasive material holding body 3 and the abrasive material holding body 3 and the upper and lower flange portions 71 are welded.

  The brush-shaped grindstone 1A configured as described above is a wheel brush that is used by being rotated around the rotation center axis 70. In this brush, a wire in which a large number of alumina long fibers are hardened with an epoxy resin, a silicone resin, or the like. Since the shaped abrasive 100 is used, the same effects as those of the first embodiment are obtained, such as high polishability and no deformation of the linear abrasive.

[Other embodiments]
If the wire sheet 2 used in the first and second embodiments is used, the brush-like grindstones 1B and 1C shown in FIGS. 4A and 4B can be configured. In the brush-shaped grindstone 1B shown in FIG. 4A, a plurality of groove-shaped abrasive material holding recesses 91 are formed on the side surface of the cylindrical abrasive material holding body 90, and the brush-shaped grindstone 1C shown in FIG. Then, a plurality of groove-shaped abrasive holding recesses 92 are formed on the lower end surface of the cylindrical abrasive holding body 90. Therefore, the wire sheet 2 shown in FIG. 2A is folded in half at the connecting sheets 30 and 40, and the bent portions are inserted into the abrasive holding recesses 91 and 92, and then the abrasive holding is performed. The linear abrasive 100 may be fixed to the abrasive holding recesses 91 and 92 by plastic working or adhesive to the opening edges of the recesses 91 and 92 for use.

  Further, in place of the wire sheet 2 used in the first and second embodiments, the first wire group and the second wire group are each formed in a small bundle shape, and the base portion thereof is bonded with a flexible connecting member. If fixed, the brush-like grindstones 1D and 1E shown in FIGS. 4C and 4D can be configured. In the brush-like grindstone 1D shown in FIG. 4 (C), an abrasive-holding concave portion 93 made of a plurality of holes is formed on the side surface of the cylindrical abrasive-holding body 90, and the brush-like grindstone 1E shown in FIG. 4 (D). Then, a recess 94 for holding an abrasive material comprising a plurality of holes is formed on the lower end surface of the cylindrical abrasive material support 90. Accordingly, the first wire group and the second wire group are each formed into a small bundle 2 ', and the base portion thereof is bonded with a flexible connecting member, and then folded into two at the connecting sheet portion. Then, the bent portion is inserted into the abrasive holding recesses 93 and 94, and then the linear abrasive 100 is ground by plastic working or an adhesive on the opening edges of the abrasive holding recesses 93 and 94. What is necessary is just to fix to the recessed parts 93 and 94 for material holding | maintenance.

  Furthermore, in the said form, although the alumina long fiber was used as an inorganic long fiber, carbon fiber, carbonized silicon fiber, and glass fiber can also be used. In addition, as the resin matrix, thermosetting resins such as phenol resins, polyimide resins, and unsaturated polyester resins can be used instead of epoxy resins and silicone resins. Further, as the retaining member 50, a rod-like rubber may be used in addition to a metal or synthetic resin core material.

  Furthermore, in the first embodiment, the first wire group and the second wire group are separate linear abrasives, but are connected to the center of the sheet-like or bundle-like linear abrasives. The sheet may be bonded and fixed, and one side thereof may be the first wire group, and the other side may be the second wire group. In this case, it may be bent at the center of the linear abrasive, but even in such a case, the root portion of each of the first wire group and the second wire group is bonded to the connecting sheet. Therefore, the linear abrasive does not fall off.

  In the first and second embodiments, the first wire group, the second wire group, and the connecting sheet are bent in a U shape. However, when the retaining member is not used, the first wire group, The two wire rod groups and the connecting sheet may be bent into a V shape.

  The brush-like grindstone of the present invention includes a linear abrasive material in which a large number of inorganic long fibers such as alumina long fibers are cured with a resin matrix, and thus has a high polishing power, and the linear abrasive material Does not deform. Therefore, highly accurate deburring and surface finishing can be performed, and such processing can be automated. In addition, since the base parts of the linear abrasives are bonded and fixed to the flexible connecting member, the base is deformed by the connecting member and the linear abrasive is directed in a desired direction. The portion can be held by the abrasive material holder. Therefore, even when a linear abrasive material obtained by curing a large number of inorganic long fibers with a resin matrix, a brush-like grindstone can be efficiently produced, and various types of brush-like grindstones can be produced.

It is explanatory drawing which shows the structure of the brush-shaped grindstone which concerns on Embodiment 1 of this invention. (A), (B) is explanatory drawing of the wire sheet | seat used for the brush-shaped grindstone shown in FIG. 1, and explanatory drawing of the state with which this wire rod | sheet was mounted | worn to the abrasive material holding body. It is explanatory drawing which shows the structure of the brush-shaped grindstone which concerns on Embodiment 2 of this invention. It is explanatory drawing of the brush-shaped grindstone which concerns on other embodiment of this invention. It is sectional drawing which shows the fixing method of the linear abrasives of the conventional brush-shaped grindstone.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1A-1E Brush-like grindstone 2 Wire material sheet 3 Abrasive material holder 10, 20 Wire material group 30, 40 Connection sheet (connection member)
50 Retaining member 60 Recess 100 for holding abrasive material Linear abrasive material

Claims (8)

In a brush-like grindstone having a large number of linear abrasives obtained by curing a large number of inorganic long fibers with a resin matrix, and an abrasive material holding body that holds the root portions of the multiple linear abrasives,
The multiple linear abrasives are composed of a first wire group and a second wire group each having a root portion bonded and fixed to a flexible connecting member and extending from the connecting member in a predetermined direction.
In the first and second wire group, the base portion is held by the abrasive holding body in a state where the connecting member is deformed, and the brush-like grindstone is characterized in that   2. The brush-like grindstone according to claim 1, wherein the inorganic long fibers are any of alumina long fibers, carbon long fibers, silicon carbide long fibers, or glass long fibers. In Claim 1 or 2, in the first and second wire rod groups, the linear abrasive is flatly arranged in such a direction that the tip side extends to the opposite side,
The brush-like grindstone characterized in that the connecting member is a sheet that is bonded and fixed to the root portion in a state where it overlaps with the root portions of both the first and second wire groups arranged flatly.   4. The brush-like grindstone according to claim 3, wherein the connecting member is a pair of sheets that are bonded and fixed to the base portions so as to sandwich the base portions of both the first and second wire groups from both sides. . 5. The abrasive holding body according to claim 3, wherein the abrasive holding body includes an abrasive holding concave portion into which root portions of the multiple linear abrasives are inserted and fixed.
The brush-type grindstone characterized in that the first and second wire rod groups are aligned in the same direction as the connecting member is bent into a U shape or a V shape. 5. The abrasive holding body according to claim 3, wherein the abrasive holding recess into which the root portions of the plurality of linear abrasives are inserted and fixed opens in a circumferential groove shape outward in the radial direction.
The connecting member is bent in a U shape or a V shape so that the first and second wire groups extend in the same direction, and the linear abrasive material extends radially toward the outer peripheral side. Bent into a ring,
In this state, the brush-like grindstone is characterized in that base portions of the plurality of linear abrasives are held in the abrasive holding recesses. In Claim 5 or 6, the connecting member is located at a position corresponding to the opening edge of the abrasive holding recess.
The abrasive holding recess has a narrowed opening by caulking with respect to an opening edge, and holds the root portions of the plurality of linear abrasives on the inside. The abrasive holding recess according to claim 5 or 6, wherein the opening is narrowed by caulking with respect to the opening edge to hold the root portions of the plurality of linear abrasives inside,
A brush-like grindstone, wherein a retaining member is disposed inside the bent portion of the connecting member.

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