TW202222590A - Processing sheet, processing grindstone, processing column member, and core drill - Google Patents

Abstract

A processing sheet (10) comprises a core material (11) made of fibers, and a plurality of processing parts (15) which are fixed to the core material (11) at positions spaced apart from each other. According to this configuration, the sharpness of the processing sheet (10) can be improved.

Description

Sheets for processing, grindstones for processing, column parts for processing, and coring drills

The present invention relates to a processing sheet, a processing grindstone, a processing column member, and a coring drill.

Conventionally, various machining tools have been known. For example, the peripheral cutting blade described in Patent Document 1, the flap grinder described in Patent Document 2, the sandpaper described in Patent Document 3, the shaft grindstone described in Patent Document 4, and The coring drill described in Patent Document 5 and the like.

[Patent Literature] [Patent Document 1] Japanese Patent Laid-Open No. 2018-202591 [Patent Document 2] Japanese Patent Laid-Open No. 55-065081 [Patent Document 3] Japanese Patent Publication No. 2011-526845 [Patent Document 4] Japanese Patent Laid-Open No. 2009-34732 [Patent Document 5] Japanese Patent Laid-Open No. 2019-151015

The processing tools described in the above-mentioned Patent Documents 1 to 5 still have room for improvement in sharpness.

In view of the above-mentioned actual situation, the present invention aims to provide a processing sheet, a processing grindstone, a processing column member, and a coring drill which can improve the sharpness. [Means of Solving Problems]

In order to achieve the said object, the processing sheet of the 1st viewpoint of this invention is provided with the core material which consists of fibrous materials, and the some processing part fixed by the said core material at the position which isolate|separates from each other.

In addition, the processing portion may be provided with: a bonding material fixed to the core material; and a plurality of abrasive grains located in the bonding material and processing a workpiece.

Moreover, the said sheet material for processing may be equipped with the filler filled between the said plurality of processing parts in the said core material.

In order to achieve the above object, a processing grindstone according to a second aspect of the present invention is a processing grindstone including the processing sheet, and the plurality of processing portions are located on the outer peripheral side of the disk-shaped processing grindstone, and are mutually They are arranged at positions separated from each other in the rotational direction of the grinding stone for processing.

In addition, the plurality of processed parts may be provided with: a first processed part formed on the surface of the disk-shaped filling material; and a second processed part formed on the inner side of the filling material; The second processing portions are alternately arranged in the aforementioned rotational direction.

In order to achieve the above object, a processing grindstone according to a third aspect of the present invention is a processing grindstone in which the above-mentioned processing sheets are arranged in plural in the rotational direction, and the two adjacent processing sheets in the rotational direction are between the two processing sheets. The machining parts are provided at positions offset from each other in the direction along the rotation axis of the machining grindstone.

In order to achieve the above object, a processing grindstone according to a fourth aspect of the present invention is a processing grindstone in which the processing sheets are arranged in plural in the rotational direction, and the two processing sheets adjacent to each other in the rotational direction are one of the two processing sheets. The machining parts are provided at positions offset from each other in the radial direction of the machining grindstone.

In order to achieve the above-mentioned object, a processing column member according to a fifth aspect of the present invention is a processing column member including the processing sheet, and the processing column member is formed to be bent upright in a direction intersecting the processing surface. In the shape of a plate, each of the processing portions is provided at a portion other than the corner portion of the processing column member.

In addition, each of the processing portions may be formed along the intersecting direction, and may be provided at positions offset from each other in the direction along the processing surface.

In order to achieve the above object, a coring drill according to a sixth aspect of the present invention is a coring drill including the processing sheet, wherein the core material is formed in a cylindrical shape, and the plurality of processed portions are along the circumference of the core material. Orientation arrangement.

Moreover, the said filler may be formed in the cylindrical shape which embeds the said core material, and the edge part along the direction of the rotation axis of the said coring drill may support the adhesive layer of the said several processing part.

In addition, the above-mentioned coring drill can also be provided with: a first core material, that is, the above-mentioned core material; a second core material, the above-mentioned core material located on the inner peripheral side of the above-mentioned first core material and different from the above-mentioned first core material; The first filling material is embedded with the first core material and supports the filling material of the plurality of processed parts, that is, the plurality of third processed parts; and the second filling material is embedded with the second core material and supports and the above-mentioned The plurality of processed parts different from the plurality of third processed parts are the plurality of fourth processed parts, and the filler material is different from the first filler material. [Inventive effect]

According to the present invention, the sharpness of the processing sheet, the processing grindstone, the processing column member, and the core drill can be improved.

(first embodiment) A processing sheet according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1 , the processing sheet 10 includes a fibrous core material 11 and a plurality of processed portions 15 fixed by the core material 11 . The core material 11 is made of, for example, a fibrous material such as glass cloth, glass mesh, non-woven cloth, or carbon fiber. A hole penetrating the thickness direction of the core material 11 is formed in the core material 11 . The core material 11 has flexibility. The mesh number of the core material 11 is, for example, preferably #10 to #200. The number of meshes indicates the number of meshes per inch of length. The larger the mesh number of the core material 11 is, the finer the mesh is, and it is difficult for the bonding material 13 of the processed part 15 to penetrate into the core material 11 , which makes it difficult to stably fix the processed part 15 to the core material 11 . On the other hand, the smaller the mesh number of the core material 11 , the thicker the mesh is, and the number of linear portions formed by the core material 11 fixing the processed portion 15 will decrease, making it difficult to stably fix the processed portion 15 to the core material 11 . From such a viewpoint, it is better to set the mesh number to #10~#200.

The plurality of processing parts 15 are provided at positions separated from each other in the surface direction of the processing sheet 10, and perform processing such as grinding and grinding of the workpiece. The plural processing units 15 are, for example, arranged in a matrix. The processed portion 15 is formed in a rectangular shape in this example. The processed part 15 is formed by electroplating on the core material 11 from a metal material such as nickel and copper containing a plurality of abrasive grains 14 to be described later. In addition, the shape of the plurality of processing parts 15 is not limited to this, and may be formed in a circular shape or a linear shape including a solid line or a broken line. As shown in FIG. 2 , a plurality of processed portions 15 are formed on both surfaces of the core material 11 . In addition, not limited to this, the plurality of processed portions 15 may be formed only on either of the two surfaces of the core material 11, or may be formed at different positions on the surface and the inner surface of the core material 11.

As shown in FIG. 2 , the machining portion 15 includes a plurality of abrasive grains 14 for machining a workpiece, and a bonding material 13 for coupling the plurality of abrasive grains 14 . A plurality of abrasive grains 14 are distributed in the bonding material 13 . In the case of abrasive particles 14, for example, diamonds. In addition, the abrasive grains 14 are not limited to diamonds, and may also be cubic boron nitride (CBN) abrasive grains, or a mixture of CBN abrasive grains and diamonds. Further, the plurality of abrasive grains 14 may be silicon carbide (SiC), fused alumina (Al ₂ O ₃ ), or a mixture of these. The bonding material 13 holds the plurality of abrasive grains 14 inside the bonding material 13 . The bonding material 13 may be formed of metals such as nickel, iron, aluminum, and copper; alloys such as aluminum alloys and bronze; resins such as phenolic resins, epoxy resins, or ceramics. The bonding material 13 is formed on both sides of the core material 11 in the thickness direction and in holes inside the core material 11 . The bonding material 13 is fixed to the core material 11 through the anchoring effect generated by entering the holes inside the core material 11 . In other words, the core material 11 is embedded in the bonding material 13 . When the workpiece is processed by the processing sheet 10, even if the abrasive grains 14 fall off, the new abrasive grains 14 can be exposed by chipping off the bonding material 13. Thereby, the reduction of the sharpness of the processing sheet 10 can be suppressed. The abrasive grains 14 are formed in a plurality of layers in the thickness direction of the processing sheet 10 in this example, but are not limited to this, and only one layer may be formed.

In this embodiment, the core material 11 is exposed to the outside between the plurality of processing parts 15 , but it is not limited to this, and a filler 18 may be formed between the plurality of processing parts 15 as shown by the dotted line in FIG. 2 . The filling material 18 is fixed to the core material 11 by entering into the holes inside the core material 11 . The thickness of the filler 18 is preferably thinner than that of the processed portion 15 . The filling material 18 is the same as the bonding material 13, and is made of resin such as phenolic resin, epoxy resin, etc.; metal or alloy. With the filler 18, the entire processing sheet 10 can have an appropriate hardness. In addition, since the processing sheet 10 contains, for example, glass fiber as the core material 11, the strength of the processing sheet 10 is increased, and the heat resistance is also high. The processing sheet 10 can be used by the processing grindstones 210 , 310 , 410 , 510 , and 610 and the coring drill 710 , which will be described later.

(Effect) As described above, according to the first embodiment and its modifications described above, the following effects can be achieved. The processing sheet 10 includes a core material 11 made of a fibrous material, and a plurality of processed portions 15 fixed by the core material 11 at positions separated from each other. With this configuration, the processing sheet 10 occupies a smaller area of the processing portion 15 in the entire area of the processing sheet 10 than the conventional sandpaper, so the processing pressure increases and the sharpness, that is, the processing efficiency, can be improved. In addition, since only a small area of the processed portion 15 is required, the usage amount of the abrasive grains 14 contained in the processed portion 15 can be reduced. In particular, by showing the state where the core material 11 is exposed between the plurality of processing parts 15, the flexibility of the processing sheet 10 can be improved, and it can be easily bent according to the shape of the workpiece. In addition, the processing sheet 10 can maintain sharpness better than conventional sandpaper.

(Second Embodiment) A processing sheet and a processing grindstone according to a second embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 3 and 4 , the grinding stone 210 for processing is formed into a disk shape, and the workpiece or the like is cut on the outer peripheral side. The grinding stone 210 for processing can be, for example, a dicing blade. For example, the grinding stone 210 for processing includes a plurality of processing parts 215 made of the same material as the processing part 15 of the first embodiment, a core material 211 made of the same material as the core material 11 of the first embodiment, and The filling material 218 of the modification of the first embodiment is made of the same material as the filling material 18 . The core material 211 is formed in a circular shape over the entire area of the processing grindstone 210 . The plurality of processing parts 215 are located on the outer peripheral side of the processing grindstone 210 , and are arranged at positions separated from the rotational direction C of the processing grindstone 210 . The plurality of processing parts 215 are arranged at equal angular intervals. Each processing part 215 has a long shape in which the radial direction R of the grinding stone 210 for processing is a long side, and is a rectangular shape in this example. The processing part 215 is provided with the plurality of abrasive grains 14 and the bonding material 13 as in the first embodiment. In this example, as shown in FIG. 5 , the processing portion 215 is formed on both surfaces of the grinding stone 210 for processing. The processing part 215 of the surface of the grinding stone 210 for processing and the processing part 215 of the back surface of the grinding stone 210 for processing are provided in the same position. Thereby, the processing part 215 of the surface of the grinding stone 210 for processing and the processing part 215 of the back surface of the grinding stone 210 for processing can be integrated. Therefore, the processed portion 215 can be more stably fixed to the core material 211 . As shown in FIG. 4 , the processed portion 215 is formed to be thicker than the filler 218 , and the processed portion 215 on both surfaces of the grinding stone 210 for processing is formed to be higher than the height of the filler 218 .

As shown in FIG. 4 , the filler 218 is filled between the plurality of processed parts 215 in the core material 211 , and is formed on both sides in the thickness direction of the core material 211 and in the holes inside the core material 211 . The filler 218 may be mixed with sharpening grains such as alumina, which are not shown in the drawings, for sharpening the abrasive grains 14 .

In this embodiment, as shown in FIG. 5 , the processing portion 215 is formed at the same position on both sides of the filler 218 , but it is not limited thereto. For example, as shown in FIGS. 6 and 7 , the processed portion 215a formed on the surface of the filler 218 and the processed portion 215b formed on the inner side of the filler 218 may also be arranged to intersect in the rotational direction C. As shown in FIG. 6, the processing part 215a and the processing part 215b may be arranged in the rotation direction C without a gap. Moreover, as shown in FIG. 7, the processing part 215a and the processing part 215b may be arrange|positioned with a clearance gap interposed in the rotation direction C. As shown in FIG. According to the structure of FIG. 6 and FIG. 7, when processing is performed with the grinding stone 210 for processing, the operation|movement of the grinding stone 210 for processing can be stabilized.

(Effect) As described above, according to the second embodiment and the modification thereof described above, the following effects can be achieved. The grinding stone 210 for processing includes a sheet for processing, and the sheet for processing includes processing parts 215 , 215 a , and 215 b , a core material 211 , and a filler 218 . The plurality of processing parts 215 , 215 a , and 215 b are located on the outer peripheral side of the disk-shaped processing grindstone 210 , and are arranged at positions separated from each other in the rotational direction C of the processing grindstone 210 . With this configuration, during machining, the machining portions 215 , 215 a , and 215 b periodically contact the workpiece in the rotational direction C of the machining grindstone 210 , thereby improving the sharpness of the machining grindstone 210 . In addition, in the case of the grinding stone 210 for machining, even in the case of cutting a workpiece made of metal, the filler 218 other than the machining parts 215, 215a, and 215b periodically contacts the workpiece, so it is difficult for sparks to be ejected. Furthermore, since the processing parts 215, 215a, and 215b are formed only on the outer peripheral side of the grinding stone 210 for processing, it is necessary to minimize the formation range of the processing parts 215, 215a, and 215b. Thereby, the amount of abrasive grains contained in the processed parts 215, 215a, and 215b can be reduced. In addition, since the core material 211 such as glass fiber is contained in the grinding stone 210 for processing, the strength of the grinding stone 210 for processing can be improved, and the heat resistance is also high. Furthermore, by using a material softer than the processing parts 215, 215a, and 215b as the filler 218, for example, resin, the contact of the processing grindstone 210 with the workpiece can be softened. Thereby, the vibration of the processing grindstone 210 during processing can be suppressed. In addition, since the processed portion 215 is formed using the fibrous core material 211 as a base material, a rigid base material is not required. Therefore, the grinding stone 210 for processing can be thinned, and the sharpness of the grinding stone 210 for processing can be improved.

(third embodiment) A processing sheet and a processing grindstone according to a third embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 8 , the processing grindstone 310 is a cylindrical flap grindstone for processing the outer peripheral surface. The grinding stone 310 for processing includes a plurality of sheets 301 for processing, and a buffer member 319 formed between the sheets 301 for processing. The plurality of sheets 301 for processing are aligned along the radial direction R of the grinding stone 310 for processing and in the rotational direction C of the grinding stone 310 for processing with a gap therebetween.

As shown in FIG. 10 , the processing sheet 301 includes a plurality of processed parts 315 made of the same material as the processed part 15 of the first embodiment, and a core material made of the same material as the core material 11 of the first embodiment 311, and the filling material 318 made of the same material as the filling material 18 of the first embodiment. The processing sheet 301 has a rectangular plate shape. Each of the plurality of processed parts 315 extends along the radial direction R, and is formed so as to reach an end part outside the radial direction R of the processing sheet 301 . The plurality of machining parts 315 are arranged in the direction along the rotation axis O of the machining grindstone 310 orthogonal to the radial direction R. As shown in FIG. The fillers 318 are formed between the plurality of processed portions 315 in the core material 311 , extend in the radial direction R, and are aligned in the direction along the rotation axis O.

As shown in FIG. 9 , the plurality of processing sheets 301 include processing sheets 301a and 301b. The two processing sheets 301a and 301b are arranged to cross over the entire outer circumference in the rotation direction C. As shown in FIG. The plural processing portions 315 of the two processing sheets 301 a and 301 b adjacent to each other in the rotation direction C are provided along the rotation axis O of the processing grindstone 310 so as to reduce the overlapping area in the rotation direction C. offset from each other in the direction. The plurality of processed portions 315 of the processing sheet 301a are provided at positions opposite to the plurality of fillers 318 of the processing sheet 301b in the rotational direction C, and the plurality of processed portions 315 of the processing sheet 301b are provided at positions opposite to the plurality of fillers 318 of the processing sheet 301b. The position where the plurality of fillers 318 of the sheet 301a face in the rotational direction C. In other words, the phase of the arrangement period of the plurality of processing parts 315 of the processing sheet 301 a and the phase of the arrangement period of the plurality of processing parts 315 of the processing sheet 301 b are in the direction along the rotation axis O of the processing grindstone 310 . Arranged in a manner deviating from a predetermined angle, which may be, for example, 180°.

In this embodiment, each processing part 315 is formed in the entire area of the processing sheet 301 in the radial direction R, but not limited to this, the inner part of each processing part 315 in the radial direction R can be omitted from the workpiece. The farther part, and the filler 318 is formed on the omitted part. With this configuration, it is possible to minimize the need for the formation range of the processed portion 315 . In addition, in this embodiment, the buffer material 319 may also be omitted.

(Effect) As described above, according to the third embodiment and its modifications described above, the following effects can be achieved. The processing grindstone 310 includes a plurality of processing sheets 301 a and 301 b arranged in the rotational direction C of the processing grindstone 310 . The processing portions 315 of the two processing sheets 301 a and 301 b adjacent to each other in the rotation direction C are provided at positions displaced from each other in the direction along the rotation axis O of the processing grindstone 310 . With this configuration, the machining unevenness of the workpiece caused by the grinding stone 310 for machining can be reduced. In addition, the processing pressure of the workpiece by the processing part 315 can be increased, and the sharpness of the grinding stone 310 for processing can be improved. In addition, by using a material softer than the processing portion 315 as the filler 318, such as resin, the filler can soften the contact of the processing grindstone 310 with the workpiece, and can elastically deform according to the uneven shape of the workpiece. In addition, vibration of the processing grindstone 310 during processing can be suppressed.

(Fourth Embodiment) A processing sheet and a processing grindstone according to a fourth embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 11 , the processing grindstone 410 of the present embodiment is a bottom surface processing grindstone in which the bottom surface is processed. The processing grindstone 410 is the same as the processing grindstone 310 of the third embodiment, and includes a plurality of processing sheets 401 and a buffer material 419 formed between the plurality of processing sheets 401 .

As shown in the enlarged lower part of FIG. 11 , the processing sheet 401 is constituted by the processing portion 415 and the filler 418 arranged to intersect in the radial direction R. As shown in FIG. The plurality of processing sheets 401 include processing sheets 401a and 401b. The two processing sheets 401a and 401b are arranged to cross over the entire outer circumference in the rotation direction C. As shown in FIG. The plural processing portions 415 of the two processing sheets 401a and 401b adjacent to each other in the rotation direction C are provided at positions shifted from each other in the radial direction R so as not to overlap each other in the rotation direction C. The plurality of processed portions 415 of the processing sheet 401a are provided at positions opposite to the plurality of fillers 418 of the processing sheet 401b in the rotational direction C, and the plurality of processed portions 415 of the processing sheet 401b are provided at positions opposite to the plurality of fillers 418 of the processing sheet 401b. The position where the plurality of fillers 418 of the sheet 401a face in the rotation direction C. In other words, the phase of the arrangement period of the plurality of processed portions 415 of the processing sheet 401a and the phase of the arrangement period of the plurality of processed portions 415 of the processing sheet 401b are arranged in the radial direction R so as to be deviated from a predetermined angle, the predetermined angle Can be eg 180°. The processing portion 415 may be formed on the entire area of the processing sheet 401 along the rotation axis O direction, or may be formed only in the vicinity of the bottom surface of the processing surface of the processing grindstone 410 along the rotation axis O direction.

The grinding stone 410 for processing in this embodiment includes a buffer material 419, but is not limited to this, and the buffer material 419 can also be omitted. At this time, the plurality of sheets 401 for processing can also be arranged so as to overlap along the rotation direction C. As shown in FIG. For example, as shown in FIG. 12 , the processing grindstone 510 of the tapered multi-blade disc is processed with the bottom surface in the same manner as the processing grindstone 410 . The grinding stone 510 for processing is provided with the disc-shaped base material 517, and the plurality of sheets for processing 501 arranged in the rotation direction C so that a part of the surface of the base material 517 overlaps with each other. As shown in the enlarged lower part of FIG. 12 , the processing sheet 501 is the same as the above-described processing sheet 401 , and is constituted by the processing portion 515 and the filler 518 arranged to cross in the radial direction R. As shown in FIG. The processing sheet 501 has a rectangular plate shape whose radial direction R is a long side, and is inclined with respect to the surface of the base material 517 .

The plurality of processed portions 515 of the processing sheet 501 are formed at positions separated from each other in the radial direction R. As shown in FIG. The plurality of processing sheets 501 include processing sheets 501a and 501b. The two processing sheets 501a and 501b are arranged to cross over the entire outer circumference in the rotation direction C. As shown in FIG. The plural processing portions 515 of the two processing sheets 501a and 501b adjacent to each other in the rotation direction C are provided at positions shifted from each other in the radial direction R in the rotation direction C so as not to overlap. The plurality of processed portions 515 of the processing sheet 501a are provided at positions opposite to the plurality of fillers 518 of the processing sheet 501b in the rotational direction C, and the plurality of processed portions 515 of the processing sheet 501b are provided at positions opposite to the plurality of fillers 518 of the processing sheet 501b. The position where the plurality of fillers 518 of the sheet 501a face in the rotation direction C. In other words, the phase of the arrangement period of the plurality of processed portions 515 of the processing sheet 501a and the phase of the arrangement period of the plurality of processed portions 515 of the processing sheet 501b are arranged so as to be deviated from a predetermined angle in the radial direction R, and the predetermined angle Can be eg 180°.

(Effect) As described above, according to the fourth embodiment and the modification thereof described above, the following effects can be obtained. The processing grindstones 410 and 510 include a plurality of processing sheets 401a and 401b; 501a and 501b arranged in the rotation direction C of the processing grindstones 410 and 510 . The two processing sheets 401a, 401b; 501a, 501b of the two processing sheets 401a, 401b; With this configuration, the machining unevenness of the workpiece caused by the grinding stones 410 and 510 for machining can be reduced. In addition, the machining pressure of the workpiece by the machining parts 415 and 515 can be increased, and the sharpness of the machining grindstones 410 and 510 can be improved. In addition, by using a material softer than the processing parts 415 and 515 as the fillers 418 and 518 , for example, resin is used to form the filler, so as to soften the contact of the processing grindstones 410 and 510 with the workpiece, which can be accompanied by unevenness of the workpiece. The shape is elastically deformed. In addition, vibration of the processing grindstones 410 and 510 during processing can be suppressed.

(Fifth Embodiment) A processing sheet, a processing grindstone, and a processing column member according to a fifth embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 14, the grinding stone 610 for processing cuts a workpiece|work by the outer peripheral surface. This artifact contains grass. The grinding stone 610 for machining includes a plurality of column members 630 for machining, and a base 617 to which the plurality of column members 630 for machining are fixed. The base 617 has a disk shape. The machining column member 630 is fixed to the outer peripheral surface of the base 617 so as to intersect the machining surface Wa (see FIG. 13B ).

As shown in FIGS. 13A and 13B , the processing column member 630 includes a plurality of processed parts 615 made of the same material as the processed part 215 of the second embodiment, and made of the same material as the core material 211 of the second embodiment The core material 611 and the filling material 618 made of the same material as the filling material 218 of the second embodiment. The processing column member 630 has a curved plate shape in which a plurality of flat plates are connected. In this example, the column member 630 for processing is a hat type. Each of the processing portions 615 is a flat plate portion other than the corner portion of the processing column member 630 . The plurality of processing parts 615 are provided at positions separated from each other in the longitudinal direction of the processing column member 630 . The processing part 615 is formed in the whole area|region of the width direction which is the short-hand direction of the column member 630 for processing. In addition, not limited to this example, as shown by the dotted line in FIG. 13B , the processed portion 615a may be formed only on the side close to the processed surface Wa in the width direction of the processing column member 630 .

As shown in FIG. 14 , the cylindrical portion 635 is formed by combining the two processing column members 630 so that the opening sides of the two processing column members 630 face each other. For example, both ends in the longitudinal direction of the two processing column members 630 are bonded to each other. The cylindrical portion 635 is fitted with a convex portion (not shown) formed on the outer peripheral surface of the base 617 . In addition, the cylindrical portion 635 can be formed so that coolant or cutting dust can pass therethrough. In this example, the cylindrical portion 635 is a hexagonal cylindrical shape, but it is not limited thereto, and may be other polygonal cylindrical shapes or cylindrical shapes.

In this embodiment, the shape of the column member 630 for processing can be appropriately changed. For example, as shown in FIG. 15 , the processing column member 730 may have a shape in which two processing column members 630 of the present embodiment are connected in the longitudinal direction. In addition, as shown in FIG. 16, the column member 830 for processing may be V-shaped, L-shaped, or U-shaped, and each processing portion 615 may be provided on a flat plate portion other than a corner portion. Furthermore, the column member for processing may be formed into a cylindrical shape from a single body. In addition, the column member 630 for processing can also be applied to a grindstone for processing with a bottom surface. At this time, the processing column member 630 may be provided in a direction intersecting the bottom surface of the grindstone, for example, may be provided in a direction perpendicular to the bottom surface of the grindstone. For example, this grindstone can also be formed so that the cylindrical part may be arranged on the bottom surface. Furthermore, the column member 630 for processing can also be applied to a grindstone for processing the outer peripheral surface. At this time, the processing column member 630 may be provided in a direction intersecting the outer peripheral surface of the grindstone, for example, may be provided in a direction perpendicular to the outer peripheral surface of the grindstone. For example, this grindstone can also be formed so that cylindrical parts may be arranged on the outer peripheral surface.

(Effect) As described above, according to the fifth embodiment and its modification described above, the following effects can be achieved. The processing column member 630 includes a processing sheet, and the processing sheet includes a processing portion 615 , a core material 611 , and a filler 618 . The processing column member 630 has a curved plate shape erected in a direction intersecting with the processing surface Wa. Each processing portion 615 is provided at a portion other than the corner portion of the processing column member 630 . With this configuration, since the machining portion 615 is provided at the non-corner portion of the machining column member 630, the machining with the machining column member 630 can be performed more stably. In addition, by using a material softer than the processing portion 615 as the filler 618 , for example, using a resin to form the filler, the contact of the processing column member 630 with the workpiece can be softened. In addition, since the filler 618 softer than the processing portion 615 is disposed at the corner of the processing column member 630, the processing column member 630 can be easily deformed around the corner of the processing column member 630. Further, since the processing column member 630 has, for example, glass fiber as the core material 611, the strength of the processing column member 630 is increased, and the heat resistance is also high. Moreover, each processing part 615 is formed so that it may extend in the direction which intersects with the processing surface Wa, and is provided in the position which mutually isolate|separates along the direction along the processing surface Wa. With this configuration, the machining pressure of the machining portion 615 with respect to the workpiece can be increased, and the sharpness of the machining column member 630 can be improved.

(Sixth Embodiment) A processing sheet and a coring drill according to a sixth embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 17 to 19 , the coring drill 710 of the grinding stone for processing is in contact with a workpiece made of concrete or the like while rotating about the rotation axis O, thereby forming a hole in the workpiece. As for the coring drill 710, as shown in FIG. 17 and FIG. 18, it has a plurality of processed parts 715a and 715b made of the same material as the processed part 15 of the first embodiment; and as shown in FIG. 19, it has Fillers 718a and 718b, which are examples of the adhesive layers, are made of the same material as the filler 18 of the first embodiment, and core materials 711a and 711b are made of the same material as the core material 11 of the first embodiment.

As shown in FIG. 19, the filler 718a is formed in a cylindrical shape on the outer peripheral side of the filler 718b. A cylindrical core material 711a is embedded in the filler material 718a. The filler 718a supports the plurality of processed portions 715a on the outer peripheral side of the filler 718b. The filler 718b is formed in a cylindrical shape on the inner peripheral side of the filler 718a. A cylindrical core material 711b is embedded in the filler 718b. The filler 718b supports the plurality of processed portions 715b on the inner peripheral side of the filler 718b. In addition, the fillers 718a and 718b may be integrally formed, and one may be formed as an individual body. In addition, any combination of the combination of the filler 718a and the core material 711a or the combination of the filler 718b and the core material 711b may be omitted. The filler materials 718a and 718b can be brazing to the core materials 711a and 711b, for example, by silver welding or the like, thereby attaching the welding materials to the core materials 711a and 711b, and supporting the processed parts 715a and 715a by hardening the welding materials. 715b. Since the core materials 711a and 711b are fibrous, they can support the molten welding material. Therefore, the loss of the molten welding material can be suppressed by the core materials 711a and 711b.

As shown in FIG. 17, the processing part 715a is arrange|positioned on the outer peripheral surface of the coring drill 710 so that it may line up along the rotation direction C. As shown in FIG. The processing parts 715b are arranged on the inner peripheral surface of the coring drill 710 so as to be aligned along the rotation direction C. As shown in FIG. The processing parts 715a and 715b are located on the front end side of the workpiece close to the coring drill 710, and have a long shape with a long side in the direction along the rotation axis O, for example, a rectangular shape. The processing part 715a and the processing part 715b are provided in the same position in the rotation direction C. As shown in FIG.

In this embodiment, the processing part 715a and the processing part 715b are arranged at the same position in the rotation direction C, but not limited to this. As shown in FIG. 20 , the processing part 715a and the processing part 715b can also be arranged in the rotation direction C offset position.

(Effect) As described above, according to the sixth embodiment and its modification described above, the following effects can be achieved. (1) The coring drill 710 includes a processing sheet including a plurality of core members 711a and 711b, a plurality of processing portions 715a and 715b, and fillers 718a and 718b. The core materials 711a and 711b are formed in a cylindrical shape. The plurality of processed parts 715a and 715b are arranged along the rotation direction C, which is the circumferential direction of the core materials 711a and 711b. With this structure, compared with the traditional coring drill with serrations, a thinner coring drill 710 can be formed, the processing pressure on the fishing workpiece can be improved, and the sharpness of the coring drill 710 can be improved. In addition, noise, dust, and vibration generated when a workpiece is processed using the coring drill 710 can be reduced.

(2) The fillers 718a, 718b are formed in a cylindrical shape in which the core materials 711a, 711b are embedded, and the ends along the direction of the rotation axis O of the coring drill 710 support the adhesive layer of the plurality of processed parts 715a, 715b . With this configuration, the strength of the coring drill 710 can be improved.

(3) The coring drill 710 includes: a core material 711a which is an example of a first core material; a core material 711b which is an example of a second core material located on the inner peripheral side of the core material 711a; the core material 711a is embedded to support a plurality of Filler 718a, which is an example of a first filling material of the processing part 715a, which is an example of the three processing parts; and a filling material, which is an example of a second filling material, which is embedded with a core material 711b and supports the processing part 715b, which is an example of a plurality of fourth processing parts. 718b. With this configuration, by providing the machining portion 715a and the machining portion 715b in the coring drill 710, the coring drill 710 can stably process the workpiece.

(4) The processed portion 715a and the processed portion 715b are provided at the same position in the rotational direction C to sandwich the fillers 718a and 718b in the radial direction R. As shown in FIG. With this configuration, the strength of the coring drill 710 can be improved.

In addition, the present invention is not limited by the embodiments and drawings including the above-mentioned modified examples. Arbitrary changes can be appropriately made (including deletion of constituent requirements) within the scope of not changing the gist of the present invention. For example, the processed portion in each of the above-described embodiments and each of the above-described modified examples includes the plurality of abrasive grains 14, but the plurality of abrasive grains 14 may be omitted and formed only of metal.

Various embodiments and modifications can be made in the present invention without departing from the broad spirit and scope of the present invention. In addition, the above-mentioned embodiment is for explaining the present invention, and is not intended to limit the scope of the present invention. That is, the scope of the present invention is shown by the scope of the claims, not by the embodiments. Next, the various deformation|transformation implemented in the range of the meaning of the invention equivalent to a patent claim and it is considered to be in the range of this invention.

This application is based on Japanese Patent Application No. 2020-197878 filed on November 30, 2020. The specification, the scope of application, and the drawings of Japanese Patent Application No. 2020-197878 are incorporated herein by reference as a whole.

10, 301, 301a, 301b, 401, 401a, 401b, 501, 501a, 501b: sheet for processing 11, 211, 311, 611, 711a, 711b: core material 13: Bonding material 14: Abrasive grains 15, 215, 215a, 215b, 315, 415, 515, 615, 715a, 715b: Processing Department 18, 218, 318, 418, 518, 618, 718a, 718b: Filler 210, 310, 310 a, 310 b, 410, 410 a, 410 b, 510, 610: Grinding stones for machining 319, 419: Buffer material 517: Substrate 617: Pedestal 630, 730, 830: Column parts for machining 635: Tubular part 710: Coring drill C: direction of rotation O: Rotation axis R: radial direction Wa: machined surface

1 is a plan view of a processing sheet according to a first embodiment of the present invention. [Fig. 2] A cross-sectional view taken along line 1-1 of Fig. 1. [Fig. [Fig. 3] A plan view of a grindstone according to a second embodiment of the present invention. [Fig. [Fig. 4] A sectional view taken along line 4-4 of Fig. 3. [Fig. [ Fig. 5 ] A partial side view of a grindstone according to a second embodiment of the present invention. [Fig. 6] A partial side view of a grindstone according to a modification of the second embodiment of the present invention. [Fig. [ Fig. 7 ] A partial side view of a grindstone according to a modification of the second embodiment of the present invention. [Fig. 8] A bottom view of a grindstone according to a third embodiment of the present invention. [Fig. [FIG. 9] A side view of a grindstone according to a third embodiment of the present invention. Fig. 10 is a front view of the processing sheet according to the third embodiment of the present invention. [ Fig. 11 ] A bottom view of a grindstone according to a fourth embodiment of the present invention and a partial enlarged view thereof. [ Fig. 12 ] A side view and a partial enlarged view of a grindstone according to a modification of the fourth embodiment of the present invention. [ Fig. 13A ] A plan view of a column member for processing according to a fifth embodiment of the present invention. [ Fig. 13B ] A front view of the column member for processing according to the fifth embodiment of the present invention. [FIG. 14] A partial side view of a grindstone according to a fifth embodiment of the present invention. Fig. 15 is a plan view of a column member for processing according to a modification of the fifth embodiment of the present invention. [ Fig. 16 ] A plan view of a column member for processing according to a modification of the fifth embodiment of the present invention. 17 is a bottom view of a coring drill according to a sixth embodiment of the present invention. [FIG. 18] A side view of a coring drill according to a sixth embodiment of the present invention. [Fig. 19] A cross-sectional view taken along line 17-17 of Fig. 18. [Fig. Fig. 20 is a partial bottom view of a coring drill according to a modification of the sixth embodiment of the present invention.

10: Sheets for processing

11: Core material

13: Bonding material

14: Multiple abrasive grains

15: Processing Department

18: Filler

Claims (12)

A processing sheet, comprising: fibrous core material; and The plurality of processed parts are fixed by the core material at positions separated from each other. The processing sheet according to claim 1, wherein the processing portion includes: a binding material fixed to the core material; and A plurality of abrasive grains are located in the bonding material and process the workpiece. The processing sheet according to claim 1 or 2 further includes a filler that is filled between the plurality of processed portions in the core material. A processing grindstone comprising the processing sheet as claimed in claim 3, The plurality of processing parts are located on the outer peripheral side of the disc-shaped processing grindstone, and are arranged at positions separated from each other in the rotational direction of the processing grindstone. The grinding stone for processing according to claim 4, wherein the plurality of processing parts are provided with: a first processed portion formed on the surface of the disc-shaped filler; and a second processed portion formed inside the filler; and The first processing portion and the second processing portion are alternately arranged in the rotation direction. A processing grindstone, wherein the processing sheets as described in claim 3 are arranged in plural in the rotation direction, The processing portions of the two processing sheets adjacent to each other in the rotation direction are provided at positions offset from each other in the direction along the rotation axis of the processing grindstone. A processing grindstone, wherein the processing sheets as described in claim 3 are arranged in plural in the rotation direction, The processing portions of the two processing sheets adjacent to each other in the rotational direction are provided at positions offset from each other in the radial direction of the processing grindstone. A processing column member comprising the processing sheet as described in claim 3, The machining column member is formed in a curved plate shape erected in a direction intersecting with the machining surface, The processing portions are provided at locations other than the corners of the processing column member. The processing column member according to claim 8, wherein the processing portions are formed along the intersecting direction, and are provided at positions offset from each other in the direction along the processing surface. A coring drill, comprising the coring drill of the sheet for processing as described in claim 3, The core material is formed in a cylindrical shape, The plurality of processed parts are arranged along the circumferential direction of the core material. The coring drill according to claim 10, wherein the filler material is formed in a cylindrical shape in which the core material is embedded, and an end portion in the direction of the rotation axis of the coring drill supports the plurality of processes part of the next layer. The coring drill as claimed in claim 11, having: the first core material, that is, the core material; a second core material, which is located on the inner peripheral side of the first core material and is different from the first core material; a first filling material, in which the first core material is embedded and supports the filling material of the plurality of processed parts, that is, the plurality of third processed parts; and The second filler is embedded with the second core material, and supports the plurality of processed parts different from the plurality of third processed parts, that is, the plurality of fourth processed parts, and the filler material different from the first filler.

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