Polishing roller brush

Abstract

To provide a polishing roller brush capable of simultaneously achieving both efficiency and quality in polishing work.SOLUTION: An aspect of the present disclosure relates to a polishing roller brush. The polishing roller brush includes a core that has a central rotation axis and is configured to be attachable to a rotary polishing device, and a polishing roll that is mounted on the core and constrained relative to the core at least in the circumferential direction about the central rotation axis. The polishing roll includes a plurality of polishing discs stacked axially in parallel along the central rotation axis of the core. Each polishing disc is formed in a flat, donut-shape having a central hole and an outer peripheral surface that polishes the surface of an object to be polished. Each polishing disc is disposed at an inclination of an angle of 1 degree or more and less than 15 degrees relative to a plane orthogonal to the central rotation axis of the core.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to abrasive tools, and more particularly to laminated abrasive roller brushes for use in abrasive operations including grinding, polishing, polishing, buffing, cleaning, polishing, and similar operations. [Background technology]

[0002] Patent Document 1 (JP 49-124692 A) describes a method for manufacturing a nonwoven fiber abrasive rail, which involves "stack- ing a predetermined number of sheets of nonwoven fabric abrasive substrate, each of which has a shaft hole and keyway punched in the center, and an appropriate number of small holes punched at predetermined locations around the shaft hole, so that small holes are formed parallel to the shaft direction of the roll, and then pressurizing and molding the sheet. In this state, adhesive resin is either injected or filled into the small holes to completely bond and fix the areas around the small holes and between adjacent abrasive substrate layers, or bolts are passed through the small holes and fastened with nuts on both ends to form a block of abrasive roll made by stacking a predetermined number of sheets, and then assembling the required number of these blocks onto a shaft."

[0003] Patent Document 2 (JP Patent Publication No. 9-201232) describes an abrasive brush used in an abrasive tool comprising a single or multiple abrasive sheets of a compressible mesh structure, arranged according to a brush format such as a spiral, laminate, or flap format, and then compressed and solidified with a hardened adhesive, characterized in that the hardened adhesive originates from a hardenable solution containing a hardenable solid resin, a hardener, and a volatile solvent, and each abrasive sheet prior to arrangement for the brush format is impregnated with the adhesive solution supplied from at least one of its both sides, and the solvent is then evaporated by drying.

[0004] Patent Document 3 (JP 2014-124743 A) describes a "nonwoven fabric polishing roll having a through hole into which the rotating shaft of a polishing machine is inserted, comprising: a polishing section in which multiple circular nonwoven fabrics each having an opening forming the through hole are stacked; and two circular support plates located at both ends of the polishing section in the stacking direction, each having an opening forming the through hole and having approximately the same outer diameter as the circular nonwoven fabrics, wherein the circular support plates contain nonwoven fabric that has been solidified in a pressed state." [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Unexamined Patent Publication No. 124692 [Patent Document 2] Japanese Patent Application Publication No. 9-201232 [Patent Document 3] JP 2014-124743 A Summary of the Invention [Problem to be solved by the invention]

[0006] In a laminated nonwoven fabric abrasive roller brush, as disclosed in FIG. 1 of Patent Document 1, FIG. 4 of Patent Document 2, and FIG. 2 of Patent Document 3, each of the laminated abrasive discs is stacked so that it is parallel to a plane perpendicular to the rotation axis.

[0007] To achieve high-efficiency polishing with such a nonwoven fabric abrasive roller brush, i.e., to increase the polishing volume per unit time, it is necessary to increase the contact pressure of the nonwoven fabric abrasive roller brush against the object being polished, select a nonwoven fabric abrasive roller brush with larger abrasive particles, or increase the rotation speed of the nonwoven fabric abrasive roller brush. However, increasing the contact pressure reduces the contact pressure due to deformation of the nonwoven fabric substrate, preventing the intended polishing volume. Furthermore, using a nonwoven fabric abrasive roller brush with larger abrasive particles can increase the polishing volume, but the surface finish of the object will be rougher depending on the particle size, making it difficult to maintain the quality of the finish. Furthermore, increasing the rotation speed of the nonwoven fabric abrasive roller brush increases the heat generated during polishing, which can lead to material deterioration and reduced dimensional accuracy for heat-sensitive objects.

[0008] Therefore, an object of the present disclosure is to provide an abrasive roller brush that simultaneously satisfies both the efficiency and quality of the abrasive work. [Means for solving the problem]

[0009] One aspect of the present disclosure relates to an abrasive roller brush, which comprises a core having a central rotation axis and configured to be attachable to a rotary polishing device, and an abrasive roll attached to the core and constrained relative to the core at least in the circumferential direction of the central rotation axis, the abrasive roll comprising a plurality of abrasive discs stacked axially in parallel along the central rotation axis, each of the abrasive discs being flat, doughnut-shaped, with a central hole and an outer peripheral surface for polishing the surface of the object to be polished, and arranged with an inclination angle between the central rotation axis and a plane perpendicular to the central rotation axis of 1 degree or more and less than 15 degrees.

[0010] In this abrasive roller brush, the abrasive disc is inclined within a predetermined range relative to a plane perpendicular to the central rotation axis, so that as the abrasive roller brush rotates, the contact point between the abrasive disc and the object to be polished moves in the axial direction of the central rotation axis, thereby absorbing variations in the abrasive characteristics of the abrasive disc and achieving high abrasive efficiency and finished quality.

[0011] Another aspect of the present disclosure relates to an abrasive roller brush, which includes: a core having a central rotation axis and configured to be attachable to a rotary polishing device; and an abrasive roll attached to the core and constrained relative to the core at least in the circumferential direction of the central rotation axis, the abrasive roll having a plurality of abrasive discs stacked axially in parallel along the central rotation axis, each of the abrasive discs having a flat donut shape with a central hole and an outer peripheral surface for polishing the surface of the object to be polished; and where θ is the angle formed by the abrasive disc and a plane perpendicular to the central rotation axis, t is the thickness of the abrasive disc, and r is the radius of the abrasive roll, r·tanθ is greater than or equal to 1 and less than 40 times t / cosθ.

[0012] With this abrasive roller brush, the contact area between the abrasive disc and the object to be polished moves beyond the contact length with the object to be polished as the abrasive roller brush rotates, thereby absorbing variations in the abrasive characteristics of the abrasive disc and achieving high polishing efficiency and finish quality. [Effects of the Invention]

[0013] The present disclosure provides an abrasive roller brush that simultaneously satisfies both the efficiency and quality of the abrasive work. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view illustrating an abrasive roller brush according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view showing a cross section of the polishing roller brush shown in FIG. 1 taken along the AA' plane. [Figure 3] 2 is a perspective view showing an abrasive disk constituting the abrasive roller brush shown in FIG. 1. FIG. [Figure 4] 2 is a perspective view showing an abrasive disc stack that constitutes the abrasive roller brush shown in FIG. 1. FIG. [Figure 5] 2 is a perspective view illustrating an inclination angle θ in an abrasive disc stack that constitutes the abrasive roller brush shown in FIG. 1. FIG. [Figure 6] Schematic diagrams showing the axial displacement of the central rotation axis at the contact point between the outer surface of the abrasive disc and the object to be polished Ob, (a) for a conventional example, and (b) for the abrasive roller brush shown in Figure 1. [Figure 7] FIG. 10 is a perspective view showing an abrasive disc stack constituting an abrasive roller brush according to another embodiment of the present disclosure. [Figure 8] FIG. 8 is a perspective view showing a cross section of the abrasive disc stack shown in FIG. 7 taken along the plane BB'. [Figure 9] FIG. 10 is a perspective cross-sectional view of an abrasive disc stack constituting an abrasive roller brush according to yet another embodiment of the present disclosure, viewed from a direction perpendicular to the central rotation axis Ax. [Figure 10] FIG. 10 is a perspective cross-sectional view of an abrasive disc stack constituting an abrasive roller brush according to yet another embodiment of the present disclosure, viewed from a direction perpendicular to the central rotation axis Ax. [Figure 11] 11 is a perspective cross-sectional view of the abrasive roller brush provided with the abrasive disc stack shown in FIG. 10, viewed from a direction perpendicular to the central rotation axis Ax. [Figure 12] FIG. 11 is an exploded perspective view of a sleeve that constitutes the abrasive disc stack shown in FIG. [Figure 13] FIG. 10 is a cross-sectional view of a polishing roller brush according to yet another embodiment of the present disclosure, as viewed in the axial direction of the central rotation axis Ax. [Figure 14] FIG. 10 is a cross-sectional view of a polishing roller brush according to yet another embodiment of the present disclosure, as viewed in the axial direction of the central rotation axis Ax. DETAILED DESCRIPTION OF THE INVENTION

[0015] [First embodiment] An embodiment of the present disclosure will be described in detail below with reference to the drawings. In the following description, identical or equivalent elements are designated by the same reference numerals, and duplicate explanations will be omitted. Furthermore, the drawings may be partially simplified or exaggerated for ease of understanding, and the dimensional ratios and the like are not limited to those shown in the drawings.

[0016] 1 to 5, the abrasive roller brush 1 includes a polishing roll 11 having end plates 51 at each end 27 of a substantially cylindrical abrasive disc stack 21 formed by stacking a predetermined number of substantially doughnut-shaped abrasive discs 31 with a central hole 36 in the thickness direction, and a hollow cylindrical core 41 having a central hole 46 that extends in the stacking direction of the abrasive discs 31, i.e., in the axial direction of the central rotation axis Ax, and allows attachment to a rotary polishing device, and the outer peripheral surface 4 of the substantially cylindrical abrasive roller brush 1 functions as a polishing surface during polishing operations. Furthermore, as will be described in detail later, each of the stacked abrasive discs 31 is stacked so as to form an inclination angle θ with respect to a plane PL perpendicular to the central rotation axis Ax.

[0017] As shown in Figure 3, the abrasive disc 31 is a flat plate of abrasive material, such as a nonwoven abrasive material, having a substantially uniform thickness, which is molded into a generally donut shape with a central hole 36, for example by punching, and has a first surface 32 which is one side of the flat plate, a second surface 33 which is the other side of the flat plate and faces the first surface, an outer peripheral surface 34 which extends between the outer peripheral edge 32a of the first surface 32 and the outer peripheral edge 33a of the second surface 33, and an inner peripheral surface 35 which extends between the inner peripheral edge 32b of the first surface 32 and the inner peripheral edge 33b of the second surface 33. After lamination, the outer peripheral surface 34 constitutes part of the outer peripheral surface 24 of the abrasive disc stack 21, the outer peripheral surface 14 of the abrasive roll 11, and the outer peripheral surface 4 of the abrasive roller brush 1, and is the surface that directly contacts the object to be polished Ob and polishes it during the polishing operation. After lamination, the inner peripheral surface 35 constitutes part of the inner peripheral surface 25 of the abrasive disc stack 21 and the inner peripheral surface 15 of the abrasive roll 11, and faces the outer peripheral surface 44 of the core 41. The space surrounded by the inner peripheral surface 35 becomes the central hole 36, which, after lamination, constitutes part of the central hole 26 of the abrasive disc stack 21 and the central hole 16 of the abrasive roll 11, and serves as a through-hole for inserting the core 41. In this embodiment, the central hole 36 of the abrasive disc 33 is elliptical, and the central hole 26 of the abrasive disc stack 21 is circular. However, as long as they can be fixed to the outer peripheral surface of the core 41, they are not limited to these shapes, and may be polygonal, or may have recesses, protrusions, slits, or the like.

[0018] The thickness t of the abrasive discs 31 can be set depending on the application of the abrasive roller brush 1 and may be, for example, 2 mm or more, 5 mm or more, or 7 mm or more, or 50 mm or less, 25 mm or less, or 12 mm or less. The thickness of the abrasive discs 31 is calculated by placing the abrasive roller brush 1 on a horizontal surface, measuring the thickness of 10 abrasive discs 31 that appear on the outer circumferential surface 4 of the abrasive roller brush 1, and dividing the measured value by 10. Furthermore, when the abrasive discs 31 that make up the abrasive roller brush 1 described below are in a compressed state, the thickness in the compressed state is used for evaluation.

[0019] As shown in Fig. 5, the abrasive disc 31 intersects with a plane PL perpendicular to the central rotation axis Ax at an inclination angle θ. Therefore, the outer and inner peripheries of the donut-shaped abrasive disc 31 are elliptical as shown in Fig. 3, and when the abrasive roll 11 is constructed, the cross section viewed from the axial direction of the central rotation axis Ax is circular. The abrasive disc 31 is formed so that the outer diameter of the abrasive roll 11 is D O , inner diameter is D I When the grinding disc 31 has an elliptical outer periphery, the major axis length L OL is D O / cosθ, minor axis length L OS is D O The major axis length of the inner circumference of the ellipse is L IL is D I / cosθ, minor axis length L IS is D I This becomes:

[0020] The abrasive disc 31 can be made of, for example, a flexible abrasive material. Being flexible allows the abrasive disc 31 to easily deform, preventing over-grinding even when pressed excessively against the workpiece Ob. Furthermore, if the surface of the workpiece Ob is curved, the abrasive disc 31 can deform to follow the curved surface, thereby achieving good abrasive results.

[0021] Flexible abrasives can be obtained by using a flexible material as a base material, applying a binder precursor liquid alone or a binder precursor liquid with abrasive particles dispersed therein as needed, and then drying and curing the applied material.

[0022] Examples of flexible substrates that can be used include nonwoven fabrics and membrane-free sponges. The term "nonwoven fabric" used here refers to a bulky sheet material made by bonding numerous filaments, and is a material well known to those skilled in the art as a substrate for nonwoven fabric abrasive products. Furthermore, membrane-free sponges are sponge materials in which the air bubble membrane has been removed by membrane removal processing, leaving only the skeleton, and are known to have high breathability and water permeability.

[0023] When a nonwoven fabric is used as the substrate, it is possible to use one formed from nylon or polyester thermoplastic organic filaments having a thickness of about 3 to 500 denier, but this is not limited thereto, and polypropylene resin filaments, polylactic acid resin filaments, etc. may also be used.

[0024] When a nonwoven fabric or uncoated sponge is used as the base material, there are few closed spaces such as air bubbles, so if a binder precursor liquid with abrasive particles dispersed therein is applied by methods such as spraying or impregnation, and if abrasive grains are further sprayed as needed, the binder precursor liquid can be applied uniformly not only to the surface of the base material but also throughout its thickness.When the abrasive material obtained in this way is used in a polishing roller brush 1, even if the outer surface 4 is worn away by the polishing operation, the abrasive particles are still retained on the newly exposed surface, so the required polishing ability can be maintained for a long time.

[0025] The binder refers to a substantially hard organic or inorganic material that binds the substrate and the abrasive particles together. For example, phenolic resin, urea-formaldehyde resin, shellac, epoxy resin, isocyanurate, polyurethane, hide glue, etc. can be used, and additives such as a curing agent, a crosslinking agent, and an emulsifier may also be added as needed.

[0026] The abrasive particles may be those commonly used in the art. Typical examples include, but are not limited to, aluminum oxide, silicon carbide, silicon nitride, zirconium oxide, chromium oxide, iron oxide, diamond, cubic boron nitride, alumina-zirconia, and emery. The particle size preferably has an average particle diameter of 2 to 500 μm (JIS No. 36 to 6000).

[0027] 4, the abrasive disc stack 21 has a thick cylindrical shape and has an outer peripheral surface 24, an inner peripheral surface 25, a central hole 26, and an end portion 27. The end portion 27 is a surface that is approximately parallel to a plane PL that is perpendicular to the central rotation axis Ax.

[0028] The abrasive disc stack 21 is formed by stacking a predetermined number of substantially doughnut-shaped abrasive discs 31 each having a central hole 36 in the center in the thickness direction, and as shown in Fig. 5, the stacked abrasive discs 31 are stacked so as to form an inclination angle θ with respect to a plane PL perpendicular to the central rotation axis Ax. In order to make the direction of the surface constituting the end portion 27 parallel to the plane PL, the inclination angle θ is maintained by arranging abrasive discs 31a whose cross section viewed from a direction perpendicular to the central rotation axis Ax is wedge-shaped.

[0029] In the abrasive disc stack 21, the number of abrasive discs 31 stacked is not particularly limited and varies depending on the width and application of the abrasive roller brush 1. The abrasive discs 31 may be stacked in a compressed state in the axial direction of the central rotation axis Ax, or may be stacked in an uncompressed state.

[0030] In this embodiment, each of the abrasive discs 31 constituting the abrasive disc stack 21 is fixed to the outer peripheral surface 44 of the core 41 via the inner peripheral surface 35 by adhesive or other means. Note that in this embodiment, adjacent abrasive discs 31 are not constrained to each other by adhesive or other means, but they may be constrained to each other depending on the use and purpose of the abrasive roller brush 1. Furthermore, the abrasive discs 31a constituting the end portion 27 and having a wedge-shaped cross section may not be able to be fixed directly to the core 41, and may be fixed to adjacent abrasive discs 31 or end plates 51 by adhesive or other means.

[0031] The end plates 51 are donut-shaped members that constitute the polishing roll 11 and are provided on the ends 27 of the abrasive-disc stack 21, i.e., on the outside of the abrasive disc 31 located in the outermost layer of the stacked abrasive discs 31, and by supporting the abrasive-disc stack 21 from the outside in the axial direction of the central rotation axis, they prevent the abrasive-disc stack 21 from deforming more than necessary, particularly outward in the axial direction of the central rotation axis, due to external forces acting on the outer circumferential surface 14 of the abrasive roller brush 1 during polishing work. Note that, when the structure of the abrasive-disc stack 21 and the external forces acting on the outer circumferential surface of the abrasive roller brush 1 are small, or when the fixing strength of the polishing roll 11 to the core 41 is sufficiently high, the end plates 51 do not need to be attached.

[0032] The material of the end plate 51 needs to have a certain level of rigidity in order to maintain the shape of the abrasive disc stack 21, but there are no particular restrictions on it, and materials such as wood materials such as hardboard, resins such as ABS resin and polypropylene resin, and metals such as aluminum, iron, and stainless steel can be used.

[0033] The polishing roll 11 is a thick cylindrical member composed of an abrasive-disc stack 21 in which a predetermined number of abrasive discs 31 are stacked in the thickness direction, and end plates 51 provided at both end portions 27 of the abrasive-disc stack 21, and has an outer peripheral surface 14, an inner peripheral surface 15, a central hole 16, and end portions 17 equipped with the end plates 51. The surface of the end plate 51 located at the end portion 17 facing inward in the stacking direction, i.e., the surface facing the adjacent abrasive disc 31, is parallel to a plane PL perpendicular to the central rotation axis Ax.

[0034] In addition, the outer diameter D of the polishing roll 11 O The outer diameter of the abrasive disc stack 21 can be any value depending on the purpose of the abrasive work and the structure of the rotary abrasive machine, for example, 50 mm or more, 100 mm or more, or 180 mm or more, or 1000 mm or less, 800 mm or less, or 650 mm or less.

[0035] The hollow cylindrical core 41 is inserted into the center hole 16 of the polishing roll 11, and the inner peripheral surface 15 forming the center hole 16 of the polishing roll 11 is fixed in the circumferential direction and axial direction of the central rotation axis Ax to the opposing outer peripheral surface 44 of the core 41. In this embodiment, the cross-sectional shape of the outer peripheral surface of the core 41 in the axial direction of the central rotation axis Ax is circular, but as long as it can fix the abrasive disc stack 21, it is not limited to being circular and may be polygonal, or may further have protrusions, recesses, blades, etc.

[0036] The core 41 is hollow and cylindrical with a center hole 46 for inserting the rotary shaft of the operating part of the rotary polishing machine for attachment, but can have any structure depending on the structure of the attachment part. As long as it can be attached to the operating part, it does not have to be hollow and can be, for example, a solid column or a rod-like body with another cross-sectional shape. Furthermore, the end faces may be flat or may have recesses or protrusions for purposes such as alignment, and both the inner circumferential surface 45 and the outer circumferential surface 44 may have a structure such as a key groove.

[0037] The material of the core 41 is not particularly limited as long as it has the required mechanical strength. For example, paper, resins such as phenolic resin, ABS resin, and polypropylene resin, metals such as aluminum, iron, and stainless steel, or a combination of these or FRP can be used. Paper and phenolic resin are advantageous in terms of cost and weight, while aluminum, iron, and stainless steel are advantageous in terms of strength, as they allow the polishing roll 11 to be replaced and used repeatedly.

[0038] The polishing roll 11 is fixed to the core 41. In this embodiment, the entire inner peripheral surface 15 of the polishing roll 11 is fixed to the outer peripheral surface 44 of the core 41, but it is not necessarily required that the entire surface be fixed, and only a portion of the inner peripheral surface 15 may be fixed to the outer peripheral surface 44.

[0039] The polishing roll 11 can be fixed to the core 41 by any method, including, but not limited to, an adhesive. Specifically, when using an adhesive, the core 41 is first coated with an adhesive on its outer circumferential surface 44, and then inserted into the center hole 16 of the polishing roll 11. The adhesive is then cured, thereby fixing the polishing roll 11 to the core 41 in both the circumferential and axial directions about the rotation axis Ax. The adhesive is not particularly limited as long as it provides the required adhesive strength. Examples of adhesives that can be used include epoxy adhesives, acrylic adhesives, silicone adhesives, and urethane adhesives. From the viewpoint of adhesive strength, epoxy adhesives are advantageous. Furthermore, heat-resistant or water-resistant adhesives can be used depending on the working environment to create a polishing roller brush 1 suited to that working environment.

[0040] The abrasive roll 11 may be fixed to the core 41 by mechanical means such as screwing the end plates 51 to the core 41. In this case, the end plates 51 themselves are fixed to the core 41 in the axial and circumferential directions about the central rotation axis Ax, and as a result, the abrasive-disk stack 21, both ends of which are supported by the end plates 51, and the abrasive discs 31 that make up this stack are fixed in the axial direction about the central rotation axis Ax, but they must be fixed in the circumferential direction about the central rotation axis Ax by other means.

[0041] As described above, in this embodiment, each of the abrasive discs 31 included in the abrasive roller brush 1 is arranged to form an inclination angle θ with respect to the plane PL perpendicular to the central rotation axis Ax. The inclination angle θ can be, for example, 1 degree or greater, 3 degrees or greater, 5 degrees or greater, or 8 degrees or greater, and can be less than 15 degrees, 14 degrees or less, 13 degrees or less, or 12 degrees or less. When the inclination angle θ exceeds 15 degrees, the external force acting on the outer peripheral surface 4 during a polishing operation has a large component of force bending each of the stacked abrasive discs 31 in the thickness direction, while the component of force pressing the outer peripheral surface 34 against the object to be polished Ob is relatively small, making it difficult to obtain sufficient polishing performance.

[0042] The inclination angle θ is measured by placing the abrasive roller brush 1 on a horizontal surface and rotating it in the circumferential direction of the central rotation axis Ax, and measuring five points using a goniometer at the position where the inclination of the abrasive disc 31 is maximum, and then using the average value.

[0043] Furthermore, in this embodiment, the abrasive discs 31 are stacked at an inclination angle θ with respect to the plane PL, and therefore the contact portion between the abrasive discs 31 and the object to be polished Ob is displaced in the axial direction of the central rotation axis Ax as the polishing roller brush 1 rotates. When the thickness of the abrasive discs 31 is t and the radius of the polishing roll 11 is r, the amount of displacement r·tan θ of the contact portion in the axial direction of the central rotation axis Ax can be 1 or more, 2 or more, or 5 or more times the axial length t / cos θ of the contact portion of the central rotation axis Ax, and can be 20 or less, 30 or less, or 40 or less times.

[0044] The effects achieved by the polishing roller brush 1 of this embodiment will be described below.

[0045] When the core 41 of the polishing roller brush 1 is attached to the operating part of a rotary polishing device and rotated around the central rotation axis Ax, the polishing roll 11 fixed directly or indirectly to the core 41 rotates together with the rotation of the core 41. Then, the outer peripheral surface 4 of the rotating polishing roll 11 is brought into contact with the surface of the object to be polished Ob, thereby polishing the surface of the object to be polished Ob.

[0046] The abrasive disc 31 constituting the abrasive roll 11 has abrasive ability at any location, not limited to the outer peripheral surface 34, so that even if the outer peripheral surface 4 of the abrasive roller brush 1 is worn down by the abrasive work, a new abrasive surface is always exposed on the outer peripheral surface 4. This allows high abrasive ability to be maintained for a long period of time.

[0047] Focusing on the region X, which has higher polishing ability than other regions due to variations in polishing ability across the thickness of the abrasive disc 31, in a conventional abrasive roller brush, i.e., an abrasive roller brush with an inclination angle θ of 0°, as shown in FIG. 6(a), the contact portion Px of the region X exposed on the outer peripheral surface of the abrasive disc 31 that contacts the workpiece Ob does not move in the axial direction of the central rotation axis Ax as the abrasive roller brush 1 rotates. In this case, the region X polishes a fixed location on the workpiece Ob, and even if the polishing ability is high, it cannot be expected to contribute to polishing over a wide area. Furthermore, excessive polishing of only certain points may result in a decrease in polishing quality. On the other hand, in this embodiment, the abrasive discs 31 are stacked at a predetermined inclination angle θ with respect to the plane PL perpendicular to the central rotation axis Ax. Therefore, as shown in FIG. 6(b), the contact portion Px of the region X exposed on the outer peripheral surface 34 of the abrasive disc 31 that contacts the workpiece Ob moves in the axial direction of the central rotation axis Ax as the abrasive roller brush 1 rotates. As a result, the region X with high polishing ability exerts a polishing effect on a wide range of the object to be polished Ob, so a higher polishing effect (for example, an improved amount of polishing per unit time) can be obtained compared to conventional examples, and there is no risk of only a specific point being polished excessively, so higher polishing quality can be ensured compared to conventional examples.

[0048] This can contribute to increasing the line speed and shortening the polishing process time in the manufacturing process of industrial products, and can be particularly effective in, for example, polishing processes for electronic components, such as surface preparation polishing, deburring polishing, and polishing to remove ink and foreign matter, for electronic components such as printed circuit boards, and cleaning polishing of the outer circumferential surfaces of rolls, such as cathode rolls and rolling rolls, in equipment for manufacturing metal foils such as copper foils. [Second embodiment]

[0049] In the abrasive roller brush according to the second embodiment, the abrasive roll constituting the abrasive roller brush is made up of one or more abrasive disc stacks 121 that use restraining means for mutually restraining a predetermined number of abrasive discs 131 as a unit, as shown in Figures 7 and 8. Note that the abrasive roll in this embodiment may include abrasive discs 131 that are not restrained by the restraining means.

[0050] In the abrasive disc stack 121 stacked at an inclination angle θ, the outer shape of the abrasive disc stack 121 is cylindrical, and therefore the outer peripheral shape of the abrasive discs 131 is elliptical. When forming the abrasive disc stack 121, it is extremely cumbersome to stack multiple elliptical abrasive discs 131 with the major and minor axes aligned while maintaining an appropriate inclination angle θ. Therefore, the abrasive discs 131 are preliminarily stacked with the major and minor axes aligned in advance, and then the abrasive discs 131 are restrained using a predetermined restraining means so that the deviation in the major and minor axes is within a certain level to form the abrasive disc stack 121, and then the abrasive discs are fixed to the core while adjusting the crossing angle θ, which makes the process easier.

[0051] An example of a restraining means that can be used for the abrasive disc stack 121 is a restraining device 161. The restraining device 161 includes a substantially string-shaped through-hole 162 having a predetermined length, a first terminal end 163 connected to one end of the through-hole 162, and a second terminal end 164 connected to the other end of the through-hole 162. The through-hole 162 penetrates a predetermined number of abrasive discs 131 in the thickness direction. The first terminal end 163 is located on the first surface 132 of the first abrasive disc 131a, which is one end of the abrasive disc stack 121. When viewed from the stacking direction of the abrasive discs 131, the first terminal end 163 is sufficiently larger in diameter than the through-hole 162. Therefore, even if the through-hole 162 is pulled in the stacking direction, the through-hole 162 will not fall off. Furthermore, the second terminal end 164 is located on the second surface 133 of the second abrasive disc 131b, which is the other end of the abrasive disc stack 121. When viewed from the stacking direction of the abrasive discs 131, the second terminal end 164 is sufficiently larger in diameter than the through-hole 162. Therefore, even if the through-hole 162 is pulled in the stacking direction, the through-hole 162 will not fall off.

[0052] The material of the restraining device 161 is not particularly limited as long as it is flexible and has the required durability. For example, nylon resin, polypropylene resin, etc. can be used. Furthermore, the through-hole 162 and the first and second end portions 163, 164 may be integrally molded. However, as long as the through-hole 162 does not fall off, for example, the through-hole 162 may be a thread, and the first and second end portions 163, 164 may each be a button-shaped plate tied to the end of the through-hole 162. Alternatively, two through-holes 162 may be provided approximately parallel to each other at a certain distance, and the first and second end portions 163, 164 may connect the ends of the two through-holes 162 to each other, and the thread may be used to restrain the entire stack of abrasive discs 131 in a circular shape.

[0053] The abrasive disc stack 121 functions as a restraining means by having at least one restraining device 161, but from the standpoint of stability, it can have two or more restraining devices on the short axis or long axis, sandwiching the central hole 126. [Third embodiment]

[0054] In the abrasive roller brush according to the third embodiment, the abrasive roll constituting the abrasive roller brush is made up of one or more abrasive disc stacks 221 that use restraining means for mutually restraining a predetermined number of abrasive discs 231 as a unit, as shown in Fig. 9. Note that the abrasive roll in this embodiment may include abrasive discs 231 that are not restrained by restraining means.

[0055] An example of a restraint means that can be used in the abrasive disc stack 221 is to provide an adhesive layer 261 between the third abrasive disc 231a and the fourth abrasive disc 231b stacked adjacent to the first surface 232 side of the third abrasive disc 231a.

[0056] The adhesive layer 261 may be provided over the entire surface of the first surface 232 of the third abrasive disc 231a and the opposing second surface 233 of the fourth abrasive disc 231b, or may be provided in a partial range in the radial direction, for example, near the inner circumferential edge 233b. Alternatively, it may be provided in a partial range in the circumferential direction, such as radially.

[0057] The adhesive that can be used for the adhesive layer 261 is not particularly limited as long as it can provide the required adhesive strength, and adhesives such as epoxy adhesives, acrylic adhesives, silicone adhesives, and urethane adhesives can be used, with epoxy adhesives being advantageous in terms of adhesive strength. Also, by using a heat-resistant adhesive or a water-resistant adhesive depending on the working environment, a polishing roller brush suitable for that working environment can be obtained.

[0058] The abrasive discs 231 constituting the abrasive disc stack 221 are constrained to each other by the adhesive layer 261 while maintaining an inclination angle θ with respect to the plane PL perpendicular to the central rotation axis Ax and with the long and short axes of each stacked abrasive disc 231 aligned, so that when a core is inserted into the central hole 226 to manufacture the abrasive roller brush, tasks such as adjusting the inclination angle and aligning the faces can be easily performed. [Fourth embodiment]

[0059] In the abrasive roller brush according to the fourth embodiment, the abrasive roll 311 constituting the abrasive roller brush 301 is made up of one or more abrasive disc stacks 321 that use restraining means for mutually restraining a predetermined number of abrasive discs 331 as a unit, as shown in Figures 10 to 12. Note that the abrasive roll 311 in this embodiment may include abrasive discs 331 that are not restrained by the restraining means.

[0060] 12 can be used as a restraining means that can be used in the abrasive disc stack 321. The sleeve 361 has a body 362 with a central hole 366 extending in the axial direction of the central rotation axis Ax, a first flange 363 at one end of the body 362, a second flange 364 at the other end of the body 362, and a plate-shaped blade 365 extending radially outward on an outer circumferential surface 362a of the body.

[0061] The central hole 366 is configured so that the core 341 can be inserted therethrough. The shape of the central hole 366 as viewed in the axial direction of the central rotation axis Ax is not particularly limited as long as the core 341 can be inserted therethrough and fixed therein, and may be, for example, a circle, a polygon, or any of these shapes with recesses or protrusions, and the inner peripheral surface may be provided with a structure such as a key groove.

[0062] The polishing roller brush 301 can be constructed by inserting the core 341 into the central hole 366 and fixing the inner peripheral surface 362b of the sleeve 361 to the outer peripheral surface 344 of the core 341. The sleeve 361 can be fixed to the core 341 by adhesive, similar to the fixing of the polishing roll 11 to the core 41 in the first embodiment. Alternatively, a key can be provided between the outer peripheral surface of the core 341 and the inner peripheral surface 362b of the sleeve 361 to fix the core 341 in the circumferential direction about the central rotation axis Ax. In this case, the end plate 351 can be fixed to the core 341 using, for example, adhesive, screws, or other means to fix the core 341 in the axial direction about the central rotation axis Ax.

[0063] Abrasive disc stack 321 can be formed by inserting body portions 362 into the central holes of a predetermined number of abrasive discs 331 and clamping them between first flanges 363 and second flanges 364. Blades 365 extending radially outward from the outer peripheral surface 362a of body portion 362 are provided, and slits extending radially outward are provided at predetermined positions on inner peripheral surfaces 335 of abrasive discs 331, so that the slits engage with blades 365, enabling circumferential fixation around central rotation axis Ax. Furthermore, because slits are provided at the same positions on each of stacked abrasive discs 331, it is possible to easily align the major and minor axes of the abrasive discs 331 when stacked.

[0064] Note that the circumferential fixation of the central rotation axis Ax of the abrasive disc 331 relative to the body 362 and the alignment of the major and minor axes of the abrasive discs 331 when stacked can also be achieved by structures other than the blade 365. For example, a shaft extending from the first flange 363 to the second flange 364 may be provided at a location a predetermined distance radially outward from the body 362, and a through-hole large enough to allow the shaft to pass through may be provided in the abrasive disc 331 at a location a predetermined distance radially outward from the inner periphery. The shaft provided in the sleeve 361 and the corresponding through-hole in the abrasive disc 331 may be provided in one location or multiple locations.

[0065] In this embodiment, the body 362, the first flange 363, and the blade 365 are molded as a single unit. Meanwhile, the second flange 364 is detachable from the body 362, and in this detached state, the body 362 can be inserted into the center hole of the abrasive disc 331 for stacking. Once a predetermined number of abrasive discs 331 have been stacked, the second flange 364 can be engaged with the body 362 and the blade 365 to form the abrasive disc stack 321.

[0066] The engagement between second flange 364 and body 362 and blade 365 may be achieved, for example, by engaging engagement hole 364a provided in second flange 364 with engagement portion 365a provided at the end of blade 365 on the second flange 364 side. Engagement portion 365a is provided with lever 365b equipped with latch 365c at its tip, which engages with engagement hole 364a to prevent second flange 364 from falling off. Alternatively, second flange 364 may be provided with boss 364b that provides an appropriate fit with body 362 and engages with the end of body 362.

[0067] The first flange 363 and the second flange 364 may be disposed on the body 362 at an inclination angle θ with respect to a plane PL perpendicular to the central rotation axis Ax. This makes it possible to easily perform tasks such as adjusting the inclination angle and facing each other when stacking the abrasive discs 331. [Fifth embodiment]

[0068] Fig. 13, which illustrates the fifth embodiment, is a cross-sectional view of the polishing roll 411 and core 441 that constitute the polishing roller brush 401, as viewed in the axial direction of the central rotation axis Ax. As shown in Fig. 13, the cross-sectional shape of the center hole 416 of the polishing roll 411 does not necessarily have to be circular, and may include, for example, linear regions, curved regions such as ellipses, involute curves, and cycloid curves, as well as geometric shapes such as inflection points, discontinuities, recesses, and protrusions. Furthermore, the cross-sectional shape of the outer peripheral surface 444 of the core 441 facing the center hole 416 is not particularly limited as long as it can be inserted into the center hole 416 and, upon engagement, can restrain the polishing roll 411 in the circumferential direction of the central rotation axis Ax. For example, the cross-sectional shape can be substantially the same as the cross-sectional shape of the center hole 416.

[0069] In addition, the relationship between the cross-sectional shape of the core 441 viewed from the axial direction of the central rotation axis Ax shown in this embodiment and the cross-sectional shape of the center hole 416 of the grinding roll 411 can also be applied to the relationship between the shape of the outer periphery in the cross section of the sleeve body and the shape of the center hole of the grinding disc shown in the fourth embodiment, and the relationship between the shape of the outer periphery in the cross section of the core and the shape of the inner periphery in the cross section of the sleeve body. [Sixth embodiment]

[0070] FIG. 14 , which illustrates the sixth embodiment, is a cross-sectional view of the polishing roll 511 and core 541 that constitute the polishing roller brush 501, viewed from the axial direction of the central rotation axis Ax. This view is an example that more specifically illustrates the fifth embodiment. As shown in FIG. 14 , the cross-sectional shape of the central hole 516 of the polishing roll 511 can be a circular through-hole with a slit 516a extending radially outward from the central rotation axis Ax. The cross-sectional shape of the outer periphery of the core 541 facing the central hole 516 is not particularly limited as long as it can be inserted through the central hole 516 and engage with the central hole to constrain the core 541 in the circumferential direction of the central rotation axis Ax. For example, the cross-sectional shape can be substantially the same as the cross-sectional shape of the outer periphery of the core 541. More specifically, the cross-sectional shape can be a shape with a blade 547 extending radially outward from the outer periphery 544 of the substantially circular core.

[0071] In addition, the relationship between the outer periphery shape in the cross section of the core 541 viewed from the axial direction of the central rotation axis Ax shown in this embodiment and the cross-sectional shape of the center hole 516 of the polishing roll 511 can also be applied to the relationship between the outer periphery shape in the cross section of the sleeve body shown in the fourth embodiment and the shape of the center hole of the polishing disc, and the relationship between the outer periphery shape in the cross section of the core and the inner periphery shape in the cross section of the sleeve body.

[0072] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. [Example]

[0073] Below, confirmation tests were carried out on the nonwoven fabric polishing roll according to the above embodiment, and the present invention will be explained in more detail based on the results of the tests. However, the present invention is not limited to the examples.

[0074] The materials used in the examples and comparative examples are shown in Table 1. [Table 1]

[0075] <Creating examples> A nonwoven abrasive sheet (225 mm long, 220 mm wide) was punched into an elliptical donut shape with an outer major axis length of 203 mm, a minor axis length of 200 mm, and an inner major axis length of 88 mm, a minor axis length of 87 mm to obtain an abrasive disc. Additionally, a 5 mm thick hardboard was cut to an outer diameter of 160 mm and an inner diameter of 87 mm to obtain two end plates. A core was fixed vertically on a horizontal workbench, and two wedge-shaped jigs, each with a central hole through which the core could be inserted and with the top plate fixed at a 10-degree angle relative to the bottom plate, were prepared. One of the jigs was installed on the core. After applying adhesive to the core, the core was inserted into the central hole of the abrasive disc. The abrasive discs were stacked on the installed jig while aligning the major axis directions of each abrasive disc. The wedge-shaped jig was then installed upside down to press down on the stacked abrasive discs from above. After the adhesive had fully hardened, the roller was cut so that the end faces were perpendicular to the core. End plates were attached to both end faces, and the outer circumferential surface was then smoothed with an abrasive sheet to obtain the abrasive roller brush of Example 1 (outer diameter 195 mm, abrasive roll width 100 mm). The tilt angle θ was measured to be 10 degrees using a goniometer (Slant Rule B-2 Dial Type (product number 78550), Shinwa Measuring Co., Ltd., Sanjo City, Niigata Prefecture, Japan).

[0076] <Creation of Comparative Example 1> A nonwoven abrasive sheet (220 mm long, 220 mm wide) was punched into a circular doughnut shape with an outer diameter of 200 mm and an inner diameter of 87 mm to obtain an abrasive disc. A 5 mm thick hardboard was also cut into an outer diameter of 160 mm and an inner diameter of 87 mm to obtain two end plates. A core was fixed vertically on a horizontal workbench, an adhesive was applied to the core, and the core was inserted into the center hole of the abrasive disc to stack the abrasive discs. A doughnut-shaped plate was then placed on top of the stacked abrasive discs to press down on them. After the adhesive had fully hardened, the core was cut, and end plates were attached to the end faces. The outer peripheral surface was then smoothed with an abrasive sheet to obtain the abrasive roller brush of Comparative Example 1 (outer diameter 195 mm, abrasive roll width 100 mm). The tilt angle θ measured using a goniometer (Slant Rule B-2 Dial Type (product number 78550), Shinwa Measuring Co., Ltd., Sanjo City, Niigata Prefecture, Japan) was 0 degrees.

[0077] <Preparation of Comparative Example 2> The abrasive roller brush (outer diameter 195 mm, abrasive roll width 100 mm) of Comparative Example 2 was obtained by the same procedure as in Example 1, except that a nonwoven abrasive sheet (227 mm long, 220 mm wide) was punched out into an elliptical doughnut shape with an outer major axis length of 207 mm, a minor axis length of 200 mm, an inner major axis length of 90 mm, and a minor axis length of 87 mm to obtain an abrasive disc, and that a wedge-shaped jig with the top plate fixed at a 15° angle relative to the bottom plate was used. The tilt angle θ measured using a goniometer (Slant Rule B-2 Dial Type (product number 78550), Shinwa Measuring Co., Ltd., Sanjo City, Niigata Prefecture, Japan) was 15°.

[0078] <Measurement of polishing ability> Each of the prepared abrasive roller brushes was attached to a surface grinding machine (SBF-1000X1, Shiken Co., Ltd., Higashiosaka City, Osaka Prefecture, Japan), and a grinding test was conducted on a workpiece made of tough-pitch copper plate (C1100P, 0.8 mm thick, Mitsubishi Materials Corporation, Chiyoda Ward, Tokyo, Japan) molded to a length of 125 mm and a width of 75 mm under the following conditions: brush rotation speed 1000 rpm, workpiece feed rate 1 m / min, cutting depth 1 mm, grinding number 5, no oscillation, dry grinding. The amount of chips discharged during each grinding operation was measured.

[0079] The chip amounts of the Examples and Comparative Example 2 are shown in Table 2, assuming that the chip amount of Comparative Example 1 is 100. [Table 2]

[0080] The present invention may be, for example, in the following aspects. [Form 1] An abrasive roller brush, a core having a central rotation axis and configured to be attachable to a rotary grinding machine; a polishing roll attached to the core and constrained relative to the core in at least a circumferential direction of the central rotation axis; The abrasive roll includes a plurality of abrasive discs stacked in parallel in an axial direction along the central rotation axis of the core, Each of the abrasive discs comprises: It has a flat donut shape with a central hole and an outer peripheral surface for polishing the surface of the object to be polished, The angle between the central rotation axis and a plane perpendicular to the central rotation axis is 1 degree or more and less than 15 degrees. Abrasive roller brush. [Form 2] 2. The abrasive roller brush according to claim 1, wherein the abrasive disc is flexible. [Form 3] The abrasive disc has at least a substrate, 3. The abrasive roller brush according to claim 2, wherein the substrate is a nonwoven fabric or a sponge. [Form 4] The abrasive disc has a first surface, a second surface opposite to the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and forming the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is a flexible through-hole that penetrates a predetermined number of the stacked abrasive discs in the stacking direction and is movable in the stacking direction of the abrasive discs; a first terminal end portion connected to one end of the penetrating portion, located on the first surface of the first abrasive disc located at one end of the abrasive disc stack on the outer side in the stacking direction, and having a diameter larger than the penetrating portion; An abrasive roller brush according to any one of forms 1 to 3, comprising a second terminal portion connected to the other end of the penetrating portion, located on the second surface of the second abrasive disc located at the other end of the abrasive disc stack outside in the stacking direction, and having a diameter larger than the penetrating portion. [Form 5] The abrasive disc has a first surface, a second surface opposite to the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and forming the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is An abrasive roller brush according to any one of the first to third embodiments, wherein the adhesive layer is provided between the first surface of the stacked third abrasive disc and the second surface of the third abrasive disc of the fourth abrasive disc stacked on the first surface side of the third abrasive disc. [Form 6] The abrasive disc has a first surface, a second surface opposite to the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and forming the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is A sleeve having a core insertion hole through which the core is inserted, The sleeve is a hollow cylindrical body portion inserted into the central hole of the abrasive disc constituting the abrasive disc stack; a first flange connected to one end of the body portion and in contact with the first surface of the first abrasive disc located at one end of the abrasive disc stack, the first abrasive disc being axially outward of the central rotation axis; a second flange connected to the other end of the barrel portion and in contact with the second surface of the second abrasive disc located at the other end of the abrasive disc stack, the second flange being axially outward of the central rotation axis; the center of the core insertion hole is located on the central rotation axis of the body portion, The stacked predetermined number of abrasive discs are sandwiched between the first flange and the second flange with the barrel portion inserted into the through hole, The abrasive disc is fixed to the sleeve in a circumferential direction of the central rotation axis, An abrasive roller brush according to any one of aspects 1 to 3, wherein the core is inserted into the core insertion hole and the sleeve is fixed to the core in the circumferential direction of the central rotation axis. [Form 7] a cross-sectional shape of the polishing roll central hole in the axial direction of the central rotation axis has a non-circular geometric shape portion; A polishing roller brush described in any one of forms 1 to 6, wherein the cross-sectional shape of the member facing the inner surface of the polishing roll in the axial direction of the central rotation axis has a shape that can engage with the cross-sectional shape of the polishing roll central hole in the axial direction of the central rotation axis. [Form 8] The geometrically shaped portion is one or more slits extending from the central rotation axis toward the outer circumferential surface, A polishing roller brush according to aspect 7, wherein the cross-sectional shape of the member facing the inner peripheral surface of the polishing roll in the axial direction of the central rotation shaft has a shape that can engage with the slit. [Form 9] The abrasive roller brush according to any one of the first to eighth aspects, for abrading electronic components or tools for manufacturing electronic components. [Form 10] An abrasive roller brush, a core having a central rotation axis and configured to be attachable to a rotary grinding machine; a polishing roll attached to the core and constrained relative to the core in at least a circumferential direction of the central rotation axis; The abrasive roll includes a plurality of abrasive discs stacked axially in parallel along the central rotation axis, Each of the abrasive discs comprises: A flat donut-shaped grinder having a central hole and an outer peripheral surface for grinding the surface of an object to be polished, The angle between the abrasive disc and a plane perpendicular to the central rotation axis is θ, The thickness of the abrasive disc is t, When the radius of the polishing roll is r, r tanθ is An abrasive roller brush having a surface roughness of 1 to 40 times t / cosθ. [Explanation of symbols]

[0081] 1, 301, 401, 501... abrasive roller brush, 4... outer peripheral surface, 11, 311, 411, 511... abrasive roll, 14... outer peripheral surface, 15, 415, 515... inner peripheral surface, 16, 416, 516... central hole, 516a... slit, 17... end, 21, 121, 221, 321... abrasive disc stack, 24... outer peripheral surface, 25... inner peripheral surface, 26, 126, 226, 326...center hole, 27...end, 31, 31a, 131, 131a, 131b, 231, 231a, 231b, 331, 431, 431a, 531, 531a...abrasive disc, 32, 132, 232...first surface, 32a...outer periphery, 32b...inner periphery, 33, 133, 233...second surface, 33a...outer periphery, 33b, 23 3b...inner peripheral edge, 34...outer peripheral surface, 35, 335...inner peripheral surface, 36, 136, 336...center hole, 41, 341, 441, 541...core, 44, 344, 444, 544...outer peripheral surface, 45...inner peripheral surface, 46, 446, 546...center hole, 547...blade, 51, 351...end plate, 161...restraint, 162...penetration portion, 163...first Terminal portion, 164...second terminal portion, 261...adhesive layer, 361...sleeve, 362...body portion, 362a...outer surface, 362b...inner surface, 362c...key groove, 363...first flange, 364...second flange, 364a...engagement hole, 364b...boss, 365...blade, 365a...engagement portion, 365b...lever, 365c...latch, 366...center hole.

Claims

1. An abrasive roller brush, a core having a central rotation axis and configured to be attachable to a rotary grinding machine; a polishing roll attached to the core and constrained relative to the core in at least a circumferential direction of the central rotation axis; The abrasive roll includes a plurality of abrasive discs stacked axially in parallel along the central rotation axis, Each of the abrasive discs comprises: It has a flat donut shape with a central hole and an outer peripheral surface for polishing the surface of the object to be polished, The central rotation axis is arranged with an inclination angle of 1 degree or more and less than 15 degrees between the central rotation axis and a plane perpendicular to the central rotation axis. Abrasive roller brush.

2. 10. The abrasive roller brush of claim 1, wherein the abrasive disc is flexible.

3. The abrasive disc has at least a substrate, 3. The abrasive roller brush according to claim 2, wherein the substrate is a nonwoven fabric or a sponge.

4. The abrasive disc has a first surface, a second surface opposite the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and defining the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is a flexible through-hole that penetrates a predetermined number of the stacked abrasive discs in the stacking direction and is movable in the stacking direction of the abrasive discs; a first terminal end portion connected to one end of the penetrating portion, located on the first surface of a first abrasive disc located at one end of the abrasive disc stack on the outer side in the stacking direction, and having a diameter larger than the penetrating portion; 2. The abrasive roller brush of claim 1, further comprising: a second terminal portion connected to the other end of the penetrating portion, located on the second surface of the second abrasive disc located at the other end of the abrasive disc stack on the outer side in the stacking direction, and having a diameter larger than the penetrating portion.

5. The abrasive disc has a first surface, a second surface opposite the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and defining the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is 2. The abrasive roller brush according to claim 1, wherein the adhesive layer is provided between the first surface of the stacked third abrasive disc and the second surface of the third abrasive disc of the fourth abrasive disc stacked on the first surface side of the third abrasive disc.

6. The abrasive disc has a first surface, a second surface opposite the first surface, and an inner peripheral surface extending between an inner peripheral edge of the first surface and an inner peripheral edge of the second surface and defining the central hole, and the outer peripheral surface extending between an outer peripheral edge of the first surface and an outer peripheral edge of the second surface, The abrasive roll includes an abrasive disc stack in which a predetermined number of the abrasive discs are stacked and constrained to each other, The abrasive disc stack is provided with a restraining means for restricting movement of adjacent abrasive discs to a predetermined amount or less, The restraining means is A sleeve having a core insertion hole through which the core is inserted, The sleeve is a hollow cylindrical body portion inserted into the central hole of the abrasive disc constituting the abrasive disc stack; a first flange connected to one end of the body portion and in contact with the first surface of the first abrasive disc located at one end of the abrasive disc stack, the first abrasive disc being axially outward of the central rotation axis; a second flange connected to the other end of the barrel portion and in contact with the second surface of the second abrasive disc located at the other end of the abrasive disc stack, the second abrasive disc being axially outward of the central rotation axis; the center of the core insertion hole is located on the central rotation axis of the body portion, The stacked predetermined number of abrasive discs are sandwiched between the first flange and the second flange with the barrel portion inserted into the through hole, The abrasive disc is fixed to the sleeve in a circumferential direction of the central rotation axis, 2. The abrasive roller brush according to claim 1, wherein the core is inserted through the core insertion hole, and the sleeve is fixed to the core in the circumferential direction of the central rotation axis.

7. a cross-sectional shape of the polishing roll central hole in the axial direction of the central rotation axis has a non-circular geometric shape portion; 2. The abrasive roller brush of claim 1, wherein the cross-sectional shape of the member facing the inner peripheral surface of the abrasive roll in the axial direction of the central rotation axis is shaped so as to be engageable with the cross-sectional shape of the central hole of the abrasive roll in the axial direction of the central rotation axis.

8. The geometrically shaped portion is one or more slits extending from the central rotation axis toward the outer circumferential surface, 8. The abrasive roller brush according to claim 7, wherein a cross-sectional shape of the member facing the inner peripheral surface of the abrasive roll in the axial direction of the central rotation shaft has a shape that can engage with the slit.

9. 10. The abrasive roller brush according to claim 1, for abrading electronic components or tools for manufacturing electronic components.

10. An abrasive roller brush, a core having a central rotation axis and configured to be attachable to a rotary grinding machine; a polishing roll attached to the core and constrained relative to the core in at least a circumferential direction of the central rotation axis; The abrasive roll includes a plurality of abrasive discs stacked axially in parallel along the central rotation axis, Each of the abrasive discs comprises: A flat donut-shaped grinder having a central hole and an outer peripheral surface for grinding the surface of an object to be polished, The angle between the abrasive disc and a plane perpendicular to the central rotation axis is θ, The thickness of the abrasive disc is t, When the radius of the polishing roll is r, r tan θ is An abrasive roller brush having a surface roughness of 1 to 40 times t / cosθ.

Images