WO2019222193A1 - Ensemble meule - Google Patents

Ensemble meule Download PDF

Info

Publication number
WO2019222193A1
WO2019222193A1 PCT/US2019/032189 US2019032189W WO2019222193A1 WO 2019222193 A1 WO2019222193 A1 WO 2019222193A1 US 2019032189 W US2019032189 W US 2019032189W WO 2019222193 A1 WO2019222193 A1 WO 2019222193A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
abrasive article
equal
cover plate
recessed portion
Prior art date
Application number
PCT/US2019/032189
Other languages
English (en)
Inventor
Samuel H. ODEH
Andrzej SCIGACZ
Original Assignee
Saint-Gobain Abrasives, Inc.
Saint-Gobain Abrasifs
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint-Gobain Abrasives, Inc., Saint-Gobain Abrasifs filed Critical Saint-Gobain Abrasives, Inc.
Priority to KR1020207034870A priority Critical patent/KR20200141521A/ko
Priority to EP19802699.9A priority patent/EP3793773A1/fr
Priority to BR112020023387-0A priority patent/BR112020023387A2/pt
Priority to CN201980039790.5A priority patent/CN112313038A/zh
Priority to CA3100328A priority patent/CA3100328A1/fr
Priority to MX2020012224A priority patent/MX2020012224A/es
Publication of WO2019222193A1 publication Critical patent/WO2019222193A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/066—Grinding blocks; their mountings or supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece
    • B24D5/04—Wheels in one piece with reinforcing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass
    • B24B9/10—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass of plate glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/06—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental
    • B24D7/08—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor with inserted abrasive blocks, e.g. segmental with reinforcing means

Definitions

  • the present invention relates, in general, to grinding wheels and multi-piece grinding wheel assemblies.
  • Abrasive grinding wheels can be used to smooth and contour the edges of certain flat materials, e.g., sheets of glass, for safety and cosmetic reasons.
  • Such abrasive grinding wheels may include diamond-containing abrasive wheels and may be used to shape the edges of materials for various industries, including but not limited to automotive, architectural, furniture, and appliance industries.
  • FIG. 1 includes an illustration of a side plan view of a grinding wheel assembly in accordance with an embodiment.
  • FIG. 2 includes an illustration of an exploded side plan view of a grinding wheel assembly in accordance with an embodiment.
  • FIG. 3 includes an illustration of a top plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 4 includes an illustration of a bottom plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 5 includes an illustration of a side plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 6 includes an illustration of a side plan view of a core for an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 7 includes an illustration of a cross-section view, taken along Line 7-7 in FIG. 3, of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 8 includes an illustration of a top plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 9 includes an illustration of a bottom plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 10 includes an illustration of a side plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 11 includes an illustration of a cross-section view, taken along Line 11-11 in
  • FIG. 8 of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 12 includes an illustration of a cross-section view of a cover plate fitted into an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 13 includes an illustration of a side plan view of a grinding wheel assembly in accordance with an embodiment.
  • FIG. 14 includes an illustration of an exploded side plan view of a grinding wheel assembly in accordance with an embodiment.
  • FIG. 15 includes an illustration of a top plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 16 includes an illustration of a bottom plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 17 includes an illustration of a side plan view of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 18 includes an illustration of a side plan view of a core for an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 19 includes an illustration of a cross-section view, taken along Line 19-19 in FIG. 15, of an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 20 includes an illustration of a top plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 21 includes an illustration of a bottom plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 22 includes an illustration of a side plan view of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 23 includes an illustration of a cross-section view, taken along Line 23-23 in
  • FIG. 20 of a cover plate for a grinding wheel assembly in accordance with an embodiment.
  • FIG. 24 includes an illustration of a cross-section view of a cover plate fitted into an abrasive article for a grinding wheel assembly in accordance with an embodiment.
  • the following is generally directed to grinding wheel assemblies that are particularly suitable for grinding and smoothing the edges of brittle materials, such as glass.
  • a grinding wheel assembly can include an abrasive body mounted in a head assembly that can be easily removed and replaced after the abrasive body is no longer providing sufficient abrasion during use.
  • the grinding wheel assembly can include an arbor in which a pull stud can be installed.
  • the arbor can further provide support for an abrasive body.
  • the arbor can include a mounting plate and the abrasive body can be held between the mounting plate and a cover plate.
  • the grinding wheel assembly can be particular suitable for operations of grinding the edges of glass, such as automobile glass and flat glass.
  • the grinding wheel assembly can allow for relatively quicker removal and replacement of the abrasive article after the abrasive article is no longer useful.
  • the pull stud, the arbor, and the cover plate need not be replaced after the abrasive body is no longer useful.
  • a grinding wheel assembly is illustrated and is generally designated 100.
  • the grinding wheel assembly 100 can include a pull stud 102, an arbor 104, an abrasive article 106, a cover plate 108, and at least one fastener 110, e.g., a threaded fastener.
  • a threaded fastener with a socket head is depicted in the FIGs., but it is to be understood that any other type of threaded fastener may be used.
  • socket head cap screws may be used.
  • standard grade 12.9 M8 socket head cap screws may be used to fasten the cover plate to the arbor 104.
  • FIG. 2 also indicates that three threaded fasteners 110 can be used to mount the cover plate 108 and the abrasive article 106 to the arbor 104.
  • a single, centrally located threaded fastener can be used to mount the cover plate 108 and the abrasive article 106 to the arbor 104. In such a case, the single, centrally located threaded fastener can pass through a center of the cover plate 108, a center of the abrasive article 106, and engage threads formed in the center of the arbor 104.
  • the pull stud 102, the arbor 104, and the cover plate 108 can include a metal or a metal alloy.
  • the metal can be stainless steel or titanium.
  • the metal can include a hardened metal, such as hardened steel. It is to be understood that the material utilized for the pull stud 102, the arbor 104, and the cover plate 108 will minimize wearing of these elements during use.
  • the abrasive article 106 will wear during grinding operations performed on the edges of various workpieces. After the abrasive article 106 is sufficiently worn, the abrasive article 106 may be removed and replace with a new abrasive body.
  • the abrasive article 106 may be removed and the outer periphery of the abrasive article 106 may be reground. Thereafter, the abrasive article 106 may be reinstalled and used to perform further grinding operations.
  • the arbor 104 can include a body 200 that can define a proximal end 202 and a distal end 204.
  • the body 200 of the arbor 104 can include a generally frustoconical drive shaft 206 that can extend from the proximal end 202 of the body 200 to a central flange 208 that extends outwardly from the body 130.
  • the body 200 of the arbor 104 can include a mounting plate 210 that can extend radially outward from the body 200 at, or near, the distal end 204 of the body 130 of the arbor 104.
  • the mounting plate 210 can include at least one threaded bore 212 radially offset from a central axis 214.
  • the at least one threaded bore 212 can be configured to receive the at least one fastener 110.
  • the arbor 104 can include a central bore 216.
  • the central bore can be formed with threads (not shown). Further, the central bore 216 of the arbor 104 can be configured to threadably engage a portion of the pull stud 102 when it is inserted in the central bore 216 of the arbor 104.
  • the abrasive article 106 can include a core 300 that can include an upper surface 302, a lower surface 304, and an outer peripheral surface 306.
  • the abrasive article 106 can include a peripheral recess 308 formed in the outer peripheral surface 306 of the core 300.
  • the peripheral recess 308 can extend radially inwardly from the outer peripheral surface 304.
  • the core 300 of the abrasive article 106 can further include an upper recessed portion 310 that can extend inwardly from the upper surface 302 of the core 300 along a central axis 312.
  • the upper recessed portion 310 can include a recessed surface 314 and a sidewall 316.
  • the upper recessed portion 310 can be bound by the sidewall 316 and can extend between the upper surface 302 and the recessed surface 314.
  • the recessed surface 314 can form an angle, a, with respect to the upper surface 302, or an axis or plane that is parallel to the upper surface 302.
  • a can be greater than or equal to 5°. In another aspect, a can be greater than or equal to 7.5°, such as greater than or equal to 10°, greater than or equal to 12.5°, or greater than or equal to 15°. In still another aspect, a can be less than or equal to 30°, such as less than or equal to 27.5°, less than or equal to 25°, less than or equal to 22.5°, or less than or equal to 22°.
  • FIG. 3, FIG. 4, and FIG. 7 indicate that the core 300 can further include a central bore 318.
  • the central bore 318 can be concentric with the central axis 312. Further, the central bore 318 can extend from the upper recessed portion 310 to the lower surface 304 of the core 300. In particular, the central bore 318 can extend from the recessed surface 314 of the upper recessed portion 310 to the lower surface 304 of the core 300.
  • the central bore 318 can be bound an inner surface 320 of the core 300.
  • the upper recessed portion 310, or the recessed surface 314 of the upper recessed portion 310 can have a radial width, WRP, measured from the inner surface 320 of the core 300 to the sidewall 316 of the upper recessed portion 310.
  • the core 300 can have a radial width, Wc, measured from the inner surface 320 of the core 300 to the outer surface 306 of the core 300.
  • W RP can be greater than or equal to 40% Wc- Further, WRP can be greater than or equal to 45% Wc, such as greater than or equal to 50% Wc, or greater than or equal to 55% Wc- In another aspect, WRP can be less than or equal to 75% Wc, such as less than or equal to 70% Wc, less than or equal to 65% Wc, or less than or equal to 60% Wc-
  • FIG. 4 and FIG. 7 further indicate that the core 300 of the abrasive article 106 can also include a central mounting hub 322 that circumscribes, or surrounds, the central bore 318 formed in the core 300.
  • the central mounting hub 322 and the lower surface 304 of the core 300 can abut, or engage, the mounting plate 210 on the arbor 104 when the abrasive article 106 is installed on the arbor 104 as illustrated in FIG. 1.
  • the central mounting hub 322 can include a plurality of fastener bores 324 equally spaced around the central axis 312. Each fastener bore 324 can receive one of the fasteners 110 therethrough when the grinding wheel assembly 100 is assembled as shown in FIG. 1.
  • the abrasive article 106 can further include a bonded abrasive body 330 disposed within the core 300.
  • the bonded abrasive body 330 can be disposed within the peripheral recess 308 formed in the outer peripheral surface 306 of the core 300.
  • the core 300 can be molded around the abrasive body 330 and the core 300 can include a plurality of manufacturing holes 332 that are formed by a tool configured to hold the abrasive body 330 within a mold during the molding process.
  • each manufacturing hole 332 can extends axially into the core 300 in a direction parallel to the central axis 312.
  • each manufacturing hole 332 can at least partially radially overlaps a portion of the bonded abrasive body 330.
  • the core 300 can also include a plug (not shown) that can be fitted into each manufacturing hole 332.
  • the core 300 can include at least two plugs (not shown) and each of the plugs can be fitted into a respective manufacturing hole 332.
  • Each of the at least two plugs can be substantially identical.
  • each of the at least two plugs can be different.
  • each of the at least two plugs can have different densities.
  • each of the at least two plugs can have different masses.
  • the core 300 may include a particular polymer material that facilitates improved performance of the bonded abrasive body, including but not limited to, aspects of strength, wearability, vibration damping, and manufacturability.
  • the core 300 of the abrasive article 106 of the present disclosure may have a particular heat deflection temperature (HDT) at 0.45 MPa of at least about l30°C, such as at least about l40°C, at least about l50°C, at least about l60°C, at least about l80°C, at least about 200°C; at least about 230°C, at least about 250°C, or at least about 260°C.
  • the HDT of the core at 0.45 MPa may not be not greater than 400°C, such as not greater than 380°C, or not greater than 360°C.
  • the HDT at 0.45 MPa of the core 300 can be within a range between any of the minimum and maximum values noted above, such as from about l30°C to about 400°C, from about 200°C to about 350°C, or from about 250°C to about 330°C.
  • the core 300 of the abrasive article 106 may have a shrinkage ratio of not greater than 3%, such as not greater than 2%, not greater than 1.5%, not 1.0%, not greater than 0.8%, not greater than 0.5%, not greater than 0.3%, not greater than 0.1%, or not greater than 0.05% .
  • the shrinkage ratio may be not greater than 0.1%.
  • the shrinkage ratio of the core 300 is at least 0.001% or at least 0.005%. It will be appreciated that the shrinkage ratio of the core 300 can be within a range between and including any of the minimum and maximum values noted above, such as from 0.001% to 3%, from 0.005% to 1%, or from 0.001% to 0.1%.
  • the core 300 of the abrasive article can have a Charpy impact of at least 45 kJ/m2, such as at least 50 kJ/m2, at least 55 KJ/m2, at least 60 kJ/m2, at least 80 kJ/m2, at least 100 kJ/m2, or at least 150 kJ/m2; in another aspect, the Charpy impact may be not greater than 300 kJ/m2 or not greater than 250 kJ/m2.
  • the Charpy impact can be within a range from any of the minimum and maximum values noted above, such as from 45 kJ/m2 to 300 kJ/m2, from 50 kJ/m2 to 250 kJ/m2, or from 100 KJ/m2 to 180 kJ/m2.
  • the core 300 can include a polymer material selected from the group of a polyamide (PA), a polybutylene terephthalate (PBT), a polyphenylene sulfide (PPS), ethylene tetrafluoroethylene (ETFE), a polyetherketone (PEEK), a polyester (PE), a polyethyleneimine (PEI), a polyethersulfone (PESET), a polyethylene terephthalate (PET), a polyphthalamide (PPA), a poly (p-phenylene sulfide), a polycarbonate (PC), acrylonitrile- butadiene-styrene (ABS), PC-ABS, or any combination thereof.
  • PA polyamide
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • ETFE ethylene tetrafluoroethylene
  • PEEK polyetherketone
  • PET polyethyleneimine
  • PESET polyethersulfone
  • PET
  • the polymer material may be a nylon, a PBT, a PPS, or a PC-ABS.
  • the nylon may be, for example, nylon 6, nylon 66, nylon 610, nylon 612, nylon 66/6, nylon 410, or nylon 46.
  • the polymer material of the core 300 may consist essentially of PPS.
  • the polymer material of the core 300 may consist essentially of PC- ABS.
  • the polymer material of the core 300 may be essentially free of nylon.
  • the core 300 may further contain reinforcing fibers and/or a powder distributed within the polymer material.
  • the reinforcing fibers may include, for example, glass fibers, carbon fibers, ceramic fibers, organic fibers, mineral fibers, or combinations thereof.
  • Suitable powders may be, for example, calcium carbonate, glass powder, mineral powder, or talc.
  • the reinforcing fibers of the core 300 may consist essentially of carbon fibers. In another particular embodiment, the reinforcing fibers of the core 300 can consist essentially of glass fibers. Consisting essentially should be understood only one specific type of fibers containing only unavoidable impurities.
  • the amount of reinforcing fibers and/or powder contained in the core 300 may be at least about lwt%, such as at least about 5wt%, at least about l0wt%, at least about l5wt%, at least about 20wt%, at least about 25wt%, or at least about 30wt%, based on the total weight of the core.
  • the amount of reinforcing fibers and/or powder may be not greater than 60wt%, such as not greater than 55wt%, not greater than 50wt%, not greater than 45wt%, or not greater than 40wt%.
  • the amount of reinforcing fibers and/or powder contained in the core 300 can be within a range between any of the minimum and maximum values noted above, such as from about 5wt% to about 50wt%, from about l5wt% to about 40wt%, from about 20wt% to about 50wt%, or from about 30wt% to about 50wt% based on the total weight of the core.
  • the reinforcing fibers can have an average aspect ratio of length to width of at least about 3, such as at least about 5, at least about 10, at least about 30, at least about 50, at least about 100, at least about 500, or at least about 800.
  • the primary aspect ratio of the reinforcing fibers may be not greater than 5000, such as not greater than 3500, not greater than 2000, not greater than 1200, not greater than 1100, or not greater than 1000. It will be appreciated that the average aspect ratio of the reinforcing fibers can be within a range between any of the minimum and maximum values note above, such as from about 3 to about 5000, from about 3 to about 1300, from about 10 to about 1200, from about 100 to about 1200, from about 500 to about 1200, from about 700 to 1200, or from about 800 to about 1200.
  • the core 300 of the abrasive article 106 of the present disclosure may consist essentially of the polymer material and the reinforcing fibers, the reinforcing fibers being present in an amount of 30 to 50 wt% based on the total weight of the core and having an average aspect ratio of length to width of 500 to 1200.
  • the core 300 may comprise PPS and carbon fibers, the carbon fibers having an average aspect ratio from about 800 to about 1200, wherein the core can have a shrinkage ratio of not greater than 0.1% and a tensile modulus of at least about 20.0 GPa.
  • the core 300 can comprise PC-ABS and glass fibers, the glass fibers having an average aspect ratio from about 800 to about 1200, wherein the core can have a shrinkage ratio of not greater than 0.1% and a tensile modulus of at least about 20.0 GPa.
  • the core 300 of the abrasive article can represent a majority of the total volume of the abrasive article.
  • the core 300 can be at least about 60vol% based on the total volume of the abrasive article, such as at least about 70vol%, at least about 75vol%, at least 80vol% or at least 85vol%.
  • the core 300 may be not greater than about 99vol% of the abrasive article, such as at not greater than about 97vol%, not greater than about 95vol%, or not greater than about 90vol%.
  • the volume percentage of the core 300 of the abrasive article based on the total volume of the abrasive article can be within a range between any of the minimum and maximum values noted above, such as from about 65vol% to about 99 vol%, from about 70°vol% to about 95vol%, or from about 80vol% to about 95vol%.
  • the bonded abrasive body 330 can be disposed in the 306 recess at the peripheral surface 304 of the core 300 and can include abrasive particles fixed in a bond material.
  • Suitable abrasive particles can include, for example, oxides, carbides, nitrides, borides, diamond, cubic boron nitride, silicon carbide, boron carbide, alumina, silicon nitride, tungsten carbide, zirconia, or a combination thereof.
  • the abrasive particles of the bonded abrasive body 330 are diamond particles.
  • the abrasive particles can consist essentially of diamond.
  • the abrasive particles contained in the bonded abrasive body 330 can have an average particle size suitable to facilitate particular grinding performance.
  • the abrasive particles can have a size less than about 2000 pm, such as less than about 1000 pm, less than about 500 pm, or less than about 300 pm.
  • the abrasive particles can have a size of at least 0.01 pm, such as at least 0.1 pm, at least about 1 pm, at least 5 pm or at least 10 pm.
  • the size of the abrasive particles contained in the bonded abrasive body 330 can be within a range between any of the minimum and maximum values noted above, such as from about 0.01 pm to about 2000 pm, from about 1 pm to about 500 pm, from about 5 pm to about 300 pm or from about 50 pm to about 150 pm.
  • the bond material of the bonded abrasive body 330 an include an inorganic material, an organic material, and a combination thereof.
  • Suitable inorganic materials for the use as bond material may include metals, glass, glass-ceramics, and a combination thereof.
  • an inorganic bond material can include one or more metal compositions or elements such as Cu, Sn, Fe, W, WC, Co, and a combination thereof.
  • Organic materials may include resins, for example thermosets, thermoplastics, and a combination thereof.
  • some suitable resins can include phenolic resins, epoxies, polyesters, cyanate esters, shellacs, polyurethanes, rubber, polyimides and a combination thereof.
  • the abrasive article 106 of the present disclosure may be selected from a range of suitable sizes to facilitate efficient grinding depending upon the workpiece.
  • the abrasive article 106 can include an abrasive wheel having a diameter of at least about 25 mm, such as at least about 30 mm or at least about 50 mm.
  • the wheel diameter may be not greater than 500 mm, such as not greater than 450 mm, not greater than 300 mm or not greater than 200 mm. It will be appreciated that the wheel diameter can be within a range between any of the minimum and maximum values noted above, such as from about 25 mm to about 500 mm, from about 50 mm to about 250 mm, or from about 25 mm to about 150 mm. As illustrated in FIG.
  • the abrasive body 330 of the abrasive article 106 can have an outer peripheral surface 334 that may have a profile ground therein. As shown, the profile may be concave, or U-shaped. However, in other aspects, the profile may be angular, or V- shaped. The profile of the outer peripheral surface 334 of the abrasive body 330 of the abrasive article 106 will be reproduced in reverse on the material to be shaped by the grinding wheel assembly 100.
  • the abrasive article 106 of the present disclosure may be selected from a range of suitable sizes to facilitate efficient grinding depending upon the workpiece.
  • the abrasive article 106 can include a diameter of at least about 25 mm, such as at least about 30 mm or at least about 50 mm.
  • the diameter may be not greater than 500 mm, such as not greater than 450 mm, not greater than 300 mm or not greater than 200 mm. It will be appreciated that the diameter can be within a range between any of the minimum and maximum values noted above, such as from about 25 mm to about 500 mm, from about 50 mm to about 250 mm, or from about 25 mm to about 150 mm.
  • the abrasive article 106 of the present disclosure can be designed for shaping the edges of a workpiece.
  • the workpiece can be an inorganic or organic material, such as, for example, glass, plastic, ceramic, or metal.
  • the workpiece can include glass, including but not limited to automotive glass, architectural glass, furniture glass, optical glass, and glass used in displays and/or to cover electronic devices (e.g., a phone).
  • the workpiece can further be crystalline, such as monocrystalline or polycrystalline, including but not limited to sapphire.
  • the abrasive article 106 of the present disclosure can be an abrasive wheel.
  • the burst strength of the abrasive wheel may be at least 135 m/s, such as at least 150 m/s, at least 160 m/s or at least 180 m/s.
  • the burst strength may be not larger than 300 m/s m/s, such as not larger than 280 m/s, or not larger than 250 m/s.
  • FIG. 8 through FIG. 11 illustrate the details concerning the construction of the cover plate 108.
  • the cover plate 108 can include a body 800 that is generally disk-shaped. Further, the body 800 of the cover plate 108 can include an upper surface 802 and a lower surface 804. The body 800 of the cover plate 108 can also include an outer wall 806 extending between the upper surface 802 and the lower surface 804. The lower surface 804 and outer wall 806 of the cover plate 108 are configured to be complimentary in size and shape to the recessed surface 314 and the sidewall 316 of the core 300 of the abrasive article 106. As depicted in FIG.
  • this shape allows the cover plate 108 to fit into the upper recessed portion 310 of the core 300 of the abrasive article 106 and engage the recessed surface 314 and the sidewall 316.
  • the lower surface 804 of the body 800 of the cover platel08 can abut and engage the recessed surface 314 of the upper recessed portion 310 of the core 300 of the abrasive article 106.
  • the outer wall 806 of the body 800 of the cover plate 108 can abut and engage the sidewall 316 of the core 300 of the abrasive article 106 the surrounds, or circumscribes, the recessed surface 314 of the upper recessed portion 310 of the core 300 of the abrasive article 106.
  • the upper recessed portion 310 of the core 300 of the abrasive article 106 is sized and shaped to receive the complimentary sized and shaped cover plate 108 therein. Further, the cover plate 108 fits into the upper recessed portion 310 of the upper surface 302 of the core 300 of the abrasive article 106, so that the upper surface 802 of the cover plate 108, i.e., the body 800 of the cover plate 108, is substantially coplanar with the upper surface 302 of the core 300 of the abrasive article 106.
  • a generally cylindrical hub 808 can extend outwardly from the lower surface 804 of the body 800 of the cover plate 108 along a central axis 810.
  • the cylindrical hub 808 is configured to extend into the central bore 318 of the core 300 of the abrasive article 106 when the cover plate 108 is fitted into the upper recessed portion 310 of the core 300 of the abrasive article 106.
  • FIG. 10 and FIG. 11 a generally cylindrical hub 808 can extend outwardly from the lower surface 804 of the body 800 of the cover plate 108 along a central axis 810.
  • the cylindrical hub 808 is configured to extend into the central bore 318 of the core 300 of the abrasive article 106 when the cover plate 108 is fitted into the upper recessed portion 310 of the core 300 of the abrasive article 106.
  • the central bore 318 of the core 300 of the abrasive article 106 can have a bore depth, DB, and the cover plate 108, i.e., the cylindrical hug 808 of the body 800 of the cover plate 108, can extend at least partially into the central bore 318 at a depth, D E , and D E can be less than or equal to 50% D B .
  • D E can be less than or equal to 45% D B , such as less than or equal to 40% D B , less than or equal to 35% D B , less than or equal to 30% D B , less than or equal to 25% D B , less than or equal to 20% D B , or less than or equal to 15% D B .
  • D E can be greater than or equal to 2.5% D B , such as greater than or equal to 5% D b , greater than or equal to 7.5% D B , or greater than or equal to 10% D B . It is to be understood that D E can be within a range between, and including, any of the maximum and minimum values of D E described herein.
  • the cover plate 108 i.e., the body 800 of the cover plate 108, has a diameter, Dcp, and W RP of the core 300 of the abrasive article 106 can be greater than or equal to 10% Dcp.
  • WRP can be greater than or equal to 12.5% DCP, such as greater than or equal to 15% DCP, greater than or equal to 17.5% DCP, or greater than or equal to 20% Dcp.
  • W RP can be less than or equal to 30.0% Dcp, such as less than or equal to 27.5% Dcp, less than or equal to 25% Dcp, or less than or equal to 22.5% Dcp. It is to be understood that W RP can be within a range between and including any of the maximum and minimum % Dcp values described herein.
  • the upper recessed portion 310, or the recessed surface 314 of the upper recessed portion 310 can have a surface area, ARP.
  • the cover plate 310 e.g., the upper surface 302 of the body 300 of the cover plate, can have a surface area, Acp, and A Rp can less than or equal to 75.0% Acp.
  • a RP can be less than or equal to 72.5% Acp, such as less than or equal to 70.0% Acp, less than or equal to 67.5% Acp, less than or equal to 65.0% Acp, less than or equal to 62.5% Acp, less than or equal to 60.0% Acp, or less than or equal to 57.5% Acp.
  • a RP can be greater than or equal to 40.0% Acp, such as greater than or equal to 42.5% Acp, greater than or equal to 45.0% Acp, greater than or equal to 47.5% Acp, greater than or equal to 50.0% Acp, greater than or equal to 52.5% Acp, or greater than or equal to 55.0% Acp. It is to be understood that A RP can be within a range between and including any of the maximum and minimum % Acp values described herein.
  • the core 300 of the abrasive article 106 can have an internal volume, Vc, that is the combined volume of the upper recessed portion 310 of the core 300 of the abrasive article 106 and the central bore 318 of the core 300 of the abrasive article 106.
  • Vc is the volume within the core 300 of the abrasive article 106, i.e., between the upper surface 302 of the core 300 and the lower surface 304 of the core 300, that is bound by the sidewall 316 of the upper recessed portion 310 of the core 300, the recessed surface 314 of the upper recessed portion 310 of the core 300, and the inner wall 320 of the core 300.
  • a displaced volume, V D which is the volume displaced, or filled, by the body 800 of the cover plate 108 when the cover plate 108 is installed within the abrasive article 106, e.g. within the upper recessed portion 310 and the central bore 318 of the core 300, can be greater than or equal to 60.0% Vc- In another aspect, V D can be greater than or equal to 62.5% Vc, such as greater than or equal to 65.0% Vc, greater than or equal to 67.5% Vc, greater than or equal to 70.0% Vc, greater than or equal to 72.5% Vc, greater than or equal to 75.0% Vc, greater than or equal to 77.5% Vc, greater than or equal to 80.0% Vc, or greater than or equal to 82.5% Vc.
  • V D can be less than or equal to 100.0% Vc, such as less than or equal to 97.5% Vc, less than or equal to 95.0% Vc, less than or equal to 92.5% Vc, less than or equal to 90.0% Vc, less than or equal to 87.5% Vc, or less than or equal to 85.0% Vc. It is to be understood that V D can be within a range between, and including, any of the minimum and maximum values of V D described herein. As shown in FIG. 8, FIG. 9, FIG. 11, and FIG. 12, the body 800 of the cover plate 108 can include at least one bore 812 extending through the cover plate 108, i.e., between the upper surface 802 and the lower surface 804.
  • the at least one bore 812 can be radially offset from the central axis 810.
  • the at least one bore 812 can be a smooth walled bore and may be sized and shaped to allow the at least one fastener 110, shown in FIG. 1, to extend through the at least one bore 812 and engage the at least one bore 812 in a slip fit arrangement.
  • the body 800 of the cover plate 108 can include at least one generally semi-circular cutout 814 that can be aligned with a manufacturing hole 332 on the core 300 of the abrasive article 106 when the cover plate 108 is installed within the abrasive article 106 as shown in FIG. 12.
  • the cover plate 108 can be made from a metal, a metal alloy, or a combination thereof. Further, the cover plate 108 can be from a non-ferrous metal. For example, the cover plate 108 can be made from aluminum, an aluminum alloy, or a combination thereof. Moreover, the cover plate 108 can be made from copper, brass, or a combination thereof. Further still, the cover plate 108 can be made from tin, bronze, or a combination thereof.
  • a grinding wheel assembly is illustrated and is generally designated 1300.
  • the grinding wheel assembly 1300 can include a pull stud 1302, an arbor 1304, an abrasive article 1306, a cover plate 1308, and at least one fastener 1310, e.g., a threaded fastener.
  • the threaded fasteners 1310 can include countersunk socket fasteners that will not extend beyond an upper surface of the cover plate 1308 or abrasive article 1306 when installed and assembled as shown in FIG. 13.
  • FIG. 14 indicates that three threaded fasteners 1310 can be used to mount the cover plate 1308 and the abrasive article 1306 to the arbor 1304.
  • an alternative fastener 1310 can be used to mount the cover plate 1308 and the abrasive article 1306 to the arbor 1304.
  • a single, centrally located threaded fastener can be used to mount the cover plate 1308 and the abrasive article 1306 to the arbor 1304.
  • the single, centrally located threaded fastener can pass through a center of the cover plate 1308, a center of the abrasive article 1306, and engage threads formed in the center of the arbor 1304.
  • the pull stud 1302, the arbor 1304, and the cover plate 1308 can include a metal or a metal alloy.
  • the metal can be stainless steel or titanium.
  • the metal can include a hardened metal, such as hardened steel. It is to be understood that the material utilized for the pull stud 1302, the arbor 1304, and the cover plate 1308 will minimize wearing of these elements during use.
  • the abrasive article 1306, however, will wear during grinding operations performed on the edges of various workpieces. After the abrasive article 1306 is sufficiently worn, the abrasive article 1306 may be removed and replace with a new abrasive body.
  • the abrasive article 1306 may be removed and the outer periphery of the abrasive article 1306 may be reground. Thereafter, the abrasive article 1306 may be reinstalled and used to perform further grinding operations.
  • the arbor 1304 can include a body 1400 that can define a proximal end 1402 and a distal end 1404.
  • the body 1400 of the arbor 1304 can include a generally frustoconical drive shaft 1406 that can extend from the proximal end 1402 of the body 1400 to a central flange 1408 that extends outwardly from the body 1330.
  • the body 1400 of the arbor 1304 can include a mounting plate 1410 that can extend radially outward from the body 1400 at, or near, the distal end 1404 of the body 1330 of the arbor 1304.
  • the mounting plate 1410 can include at least one threaded bore 1412 radially offset from a central axis 1414.
  • the at least one threaded bore 1412 can be configured to receive the at least one fastener 1310.
  • the arbor 1304 can include a central bore 1416.
  • the central bore can be formed with threads (not shown).
  • central bore 1416 of the arbor 1304 can be configured to threadably engage a portion of the pull stud 1302 when it is inserted in the central bore 1416 of the arbor 1304.
  • the abrasive article 1306 can include a core 1500 that can include an upper surface 1502, a lower surface 1504, and an outer peripheral surface 1506.
  • the abrasive article 1506 can include a peripheral recess 1508 formed in the outer peripheral surface 1506 of the core 1500.
  • the peripheral recess 1508 can extend radially inwardly from the outer peripheral surface 1504.
  • the core 1500 of the abrasive article 1506 can further include an upper recessed portion 1510 that can extend inwardly from the upper surface 1502 of the core 1500 along a central axis 1512.
  • the upper recessed portion 1510 can include a recessed surface 1514 and a sidewall 1516.
  • the upper recessed portion 1510 can be bound by the sidewall 1516 and can extend between the upper surface 1502 and the recessed surface 1514.
  • the recessed surface 1514 is substantially parallel to the upper surface 1502.
  • FIG. 15, FIG. 16, and FIG. 19 indicate that the core 1500 can further include a central bore 1518.
  • the central bore 1518 can be concentric with the central axis 1512. Further, the central bore 1518 can extend from the upper recessed portion 1510 to the lower surface 1504 of the core 1500. In particular, the central bore 1518 can extend from the recessed surface 1514 of the upper recessed portion 1510 to the lower surface 1504 of the core 1500.
  • the central bore 1518 can be bound an inner surface 1520 of the core 1500.
  • the upper recessed portion 1510, or the recessed surface 1514 of the upper recessed portion 1510 can have a radial width, WRP, measured from the inner surface 1520 of the core 1500 to the sidewall 1516 of the upper recessed portion 1510.
  • the core 1500 can have a radial width, Wc, measured from the inner surface 1520 of the core 1500 to the outer surface 1506 of the core 1500.
  • W RP can be greater than or equal to 40% Wc- Further, W RP can be greater than or equal to 45% Wc, such as greater than or equal to 50% Wc, or greater than or equal to 55% Wc- In another aspect, WRP can be less than or equal to 75% Wc, such as less than or equal to 70% Wc, less than or equal to 65% Wc, or less than or equal to 60% Wc-
  • FIG. 16 and FIG. 19 further indicate that the core 1500 of the abrasive article 1506 can also include a central mounting hub 1522 that circumscribes, or surrounds, the central bore 1518 formed in the core 1500.
  • the central mounting hub 1522 and the lower surface 1504 of the core 1500 can abut, or engage, the mounting plate 210 on the arbor 1504 when the abrasive article 1506 is installed on the arbor 1304 as illustrated in FIG. 13.
  • the central mounting hub 1522 can include a plurality of fastener bores 1524 equally spaced around the central axis 1512. Each fastener bore 1524 can receive one of the fasteners 1310
  • the abrasive article 1306 can further include a bonded abrasive body 1530 disposed within the core 1500.
  • the bonded abrasive body 1530 can be disposed within the peripheral recess 1508 formed in the outer peripheral surface 1506 of the core 1500.
  • the core 1500 can be molded around the abrasive body 1530 and the core 1500 can include a plurality of manufacturing holes 1532 that are formed by a tool configured to hold the abrasive body 1530 within a mold during the molding process.
  • each manufacturing hole 1532 can extends axially into the core 1500 in a direction parallel to the central axis 1512. Further, each manufacturing hole 1532 can at least partially radially overlaps a portion of the bonded abrasive body 1530.
  • the core 1500 can also include a plug (not shown) that can be fitted into each manufacturing hole 1532.
  • the core 1500 can include at least two plugs (not shown) and each of the plugs can be fitted into a respective manufacturing hole 1532.
  • Each of the at least two plugs can be substantially identical.
  • each of the at least two plugs can be different. For example, each of the at least two plugs can have different densities. Moreover, each of the at least two plugs can have different masses.
  • the core 1500 may include a particular polymer material that facilitates improved performance of the bonded abrasive body, including but not limited to, aspects of strength, wearability, vibration damping, and manufacturability.
  • the core 1500 of the abrasive article 1506 of the present disclosure may have a particular heat deflection temperature (HDT) at 0.45 MPa of at least about l30°C, such as at least about l40°C, at least about l50°C, at least about l60°C, at least about l80°C, at least about 200°C; at least about 230°C, at least about 250°C, or at least about 260°C.
  • the HDT of the core at 0.45 MPa may not be not greater than 400°C, such as not greater than 380°C, or not greater than 360°C.
  • the HDT at 0.45 MPa of the core 1500 can be within a range between any of the minimum and maximum values noted above, such as from about l30°C to about 400°C, from about 200°C to about 350°C, or from about 250°C to about 330°C.
  • the core 1500 of the abrasive article 1306 may have a shrinkage ratio of not greater than 3%, such as not greater than 2%, not greater than 1.5%, not 1.0%, not greater than 0.8%, not greater than 0.5%, not greater than 0.3%, not greater than 0.1%, or not greater than 0.05% .
  • the shrinkage ratio may be not greater than 0.1%.
  • the shrinkage ratio of the core 1500 is at least 0.001% or at least 0.005%. It will be appreciated that the shrinkage ratio of the core 1500 can be within a range between and including any of the minimum and maximum values noted above, such as from 0.001% to 3%, from 0.005% to 1%, or from 0.001% to 0.1%.
  • the core 1500 of the abrasive article can have a Charpy impact of at least 45 kJ/m2, such as at least 50 kJ/m2, at least 55 KJ/m2, at least 60 kJ/m2, at least 80 kJ/m2, at least 100 kJ/m2, or at least 150 kJ/m2; in another aspect, the Charpy impact may be not greater than 300 kJ/m2 or not greater than 250 kJ/m2.
  • the Charpy impact can be within a range from any of the minimum and maximum values noted above, such as from 45 kJ/m2 to 300 kJ/m2, from 50 kJ/m2 to 250 kJ/m2, or from 100 KJ/m2 to 180 kJ/m2.
  • the core 1500 can include a polymer material selected from the group of a polyamide (PA), a polybutylene terephthalate (PBT), a polyphenylene sulfide (PPS), ethylene tetrafluoroethylene (ETFE), a polyetherketone (PEEK), a polyester (PE), a polyethyleneimine (PEI), a polyethersulfone (PESU), a polyethylene terephthalate (PET), a polyphthalamide (PPA), a poly (p-phenylene sulfide), a polycarbonate (PC), acrylonitrile- butadiene-styrene (ABS), PC-ABS, or any combination thereof.
  • PA polyamide
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • ETFE ethylene tetrafluoroethylene
  • PEEK polyetherketone
  • PET polyethylene terephthalate
  • PPA polyphthalamide
  • PC
  • the polymer material may be a nylon, a PBT, a PPS, or a PC-ABS.
  • the nylon may be, for example, nylon 6, nylon 66, nylon 610, nylon 612, nylon 66/6, nylon 410, or nylon 46.
  • the polymer material of the core 1500 may consist essentially of PPS.
  • the polymer material of the core 1500 may consist essentially of PC-ABS.
  • the polymer material of the core 1500 may be essentially free of nylon.
  • the core 1500 may further contain reinforcing fibers and/or a powder distributed within the polymer material.
  • the reinforcing fibers may include, for example, glass fibers, carbon fibers, ceramic fibers, organic fibers, mineral fibers, or combinations thereof.
  • Suitable powders may be, for example, calcium carbonate, glass powder, mineral powder, or talc.
  • the reinforcing fibers of the core 1500 may consist essentially of carbon fibers. In another particular embodiment, the reinforcing fibers of the core 1500 can consist essentially of glass fibers. Consisting essentially should be understood only one specific type of fibers containing only unavoidable impurities.
  • the amount of reinforcing fibers and/or powder contained in the core 1500 may be at least about lwt%, such as at least about 5wt%, at least about l0wt%, at least about l5wt%, at least about 20wt%, at least about 25wt%, or at least about 30wt%, based on the total weight of the core.
  • the amount of reinforcing fibers and/or powder may be not greater than 60wt%, such as not greater than 55wt%, not greater than 50wt%, not greater than 45wt%, or not greater than 40wt%.
  • the amount of reinforcing fibers and/or powder contained in the core 1500 can be within a range between any of the minimum and maximum values noted above, such as from about 5wt% to about 50wt%, from about l5wt% to about 40wt%, from about 20wt% to about 50wt%, or from about 30wt% to about 50wt% based on the total weight of the core.
  • the reinforcing fibers can have an average aspect ratio of length to width of at least about 3, such as at least about 5, at least about 10, at least about 30, at least about 50, at least about 100, at least about 500, or at least about 800.
  • the primary aspect ratio of the reinforcing fibers may be not greater than 5000, such as not greater than 3500, not greater than 2000, not greater than 1200, not greater than 1100, or not greater than 1000.
  • the average aspect ratio of the reinforcing fibers can be within a range between any of the minimum and maximum values note above, such as from about 3 to about 5000, from about 3 to about 1300, from about 10 to about 1200, from about 100 to about 1200, from about 500 to about 1200, from about 700 to 1200, or from about 2000 to about 1200.
  • the core 1500 of the abrasive article 1306 of the present disclosure may consist essentially of the polymer material and the reinforcing fibers, the reinforcing fibers being present in an amount of 30 to 50 wt% based on the total weight of the core and having an average aspect ratio of length to width of 500 to 13200.
  • the core 1500 may comprise PPS and carbon fibers, the carbon fibers having an average aspect ratio from about 800 to about 1200, wherein the core can have a shrinkage ratio of not greater than 0.1% and a tensile modulus of at least about 20.0 GPa.
  • the core 1500 can comprise PC-ABS and glass fibers, the glass fibers having an average aspect ratio from about 800 to about 1200, wherein the core can have a shrinkage ratio of not greater than 0.1% and a tensile modulus of at least about 20.0 GPa.
  • the core 1500 of the abrasive article can represent a majority of the total volume of the abrasive article.
  • the core 1500 can be at least about 60vol% based on the total volume of the abrasive article, such as at least about 70vol%, at least about 75vol%, at least 80vol% or at least 85vol%.
  • the core 1500 may be not greater than about 99vol% of the abrasive article, such as at not greater than about 97vol%, not greater than about 95vol%, or not greater than about 90vol%.
  • volume percentage of the core 1500 of the abrasive article based on the total volume of the abrasive article can be within a range between any of the minimum and maximum values noted above, such as from about 65vol% to about 99 vol%, from about 70°vol% to about 95vol%, or from about 80vol% to about 95vol%.
  • the bonded abrasive body 1530 can be disposed in the 1506 recess at the peripheral surface 1504 of the core 1500 and can include abrasive particles fixed in a bond material.
  • Suitable abrasive particles can include, for example, oxides, carbides, nitrides, borides, diamond, cubic boron nitride, silicon carbide, boron carbide, alumina, silicon nitride, tungsten carbide, zirconia, or a combination thereof.
  • the abrasive particles of the bonded abrasive body 1530 are diamond particles. In at least one
  • the abrasive particles can consist essentially of diamond.
  • the abrasive particles contained in the bonded abrasive body 1530 can have an average particle size suitable to facilitate particular grinding performance.
  • the abrasive particles can have a size less than about 2000 pm, such as less than about 1000 pm, less than about 500 pm, or less than about 300 pm.
  • the abrasive particles can have a size of at least 0.01 pm, such as at least 0.1 pm, at least about 1 pm, at least 5 pm or at least 10 pm.
  • the size of the abrasive particles contained in the bonded abrasive body 1330 can be within a range between any of the minimum and maximum values noted above, such as from about 0.01 pm to about 2000 pm, from about 1 pm to about 500 pm, from about 5 pm to about 300 pm or from about 50 pm to about 150 pm.
  • the bond material of the bonded abrasive body 1530 an include an inorganic material, an organic material, and a combination thereof.
  • Suitable inorganic materials for the use as bond material may include metals, glass, glass-ceramics, and a combination thereof.
  • an inorganic bond material can include one or more metal compositions or elements such as Cu, Sn, Fe, W, WC, Co, and a combination thereof.
  • Organic materials may include resins, for example thermosets, thermoplastics, and a combination thereof.
  • some suitable resins can include phenolic resins, epoxies, polyesters, cyanate esters, shellacs, polyurethanes, rubber, polyimides and a combination thereof.
  • the abrasive article 1306 of the present disclosure may be selected from a range of suitable sizes to facilitate efficient grinding depending upon the workpiece.
  • the abrasive article 1306 can include an abrasive wheel having a diameter of at least about 25 mm, such as at least about 30 mm or at least about 50 mm.
  • the wheel diameter may be not greater than 500 mm, such as not greater than 450 mm, not greater than 300 mm or not greater than 200 mm. It will be appreciated that the wheel diameter can be within a range between any of the minimum and maximum values noted above, such as from about 25 mm to about 500 mm, from about 50 mm to about 250 mm, or from about 25 mm to about 150 mm.
  • the abrasive body 1530 of the abrasive article 1306 can have an outer peripheral surface 1534 that may have a profile ground therein. As shown, the profile may be concave, or U-shaped. However, in other aspects, the profile may be angular, or V-shaped. The profile of the outer peripheral surface 1534 of the abrasive body 1530 of the abrasive article 1506 will be reproduced in reverse on the material to be shaped by the grinding wheel assembly 1500.
  • the abrasive article 1506 of the present disclosure may be selected from a range of suitable sizes to facilitate efficient grinding depending upon the workpiece.
  • the abrasive article 1506 can include a diameter of at least about 25 mm, such as at least about 30 mm or at least about 50 mm.
  • the diameter may be not greater than 500 mm, such as not greater than 450 mm, not greater than 300 mm or not greater than 200 mm. It will be appreciated that the diameter can be within a range between any of the minimum and maximum values noted above, such as from about 25 mm to about 500 mm, from about 50 mm to about 250 mm, or from about 25 mm to about 150 mm.
  • the abrasive article 1306 of the present disclosure can be designed for shaping the edges of a workpiece.
  • the workpiece can be an inorganic or organic material, such as, for example, glass, plastic, ceramic, or metal.
  • the workpiece can include glass, including but not limited to automotive glass, architectural glass, furniture glass, optical glass, and glass used in displays and/or to cover electronic devices (e.g., a phone).
  • the workpiece can further be crystalline, such as monocrystalline or polycrystalline, including but not limited to sapphire.
  • the abrasive article 1306 of the present disclosure can be an abrasive wheel.
  • the burst strength of the abrasive wheel may be at least 135 m/s, such as at least 135 m/s, at least 160 m/s or at least 180 m/s.
  • the burst strength may be not larger than 300 m/s m/s, such as not larger than 280 m/s, or not larger than 250 m/s.
  • FIG. 20 through FIG. 23 illustrate the details concerning the construction of the cover plate 1308.
  • the cover plate 1308 can include a body 2000 that is generally disk-shaped. Further, the body 2000 of the cover plate 1308 can include an upper surface 2002 and a lower surface 2004. The body 2000 of the cover plate 1308 can also include an outer wall 2006 extending between the upper surface 2002 and the lower surface 2004. The lower surface 2004 and outer wall 2006 of the cover plate 1308 are configured to be complimentary in size and shape to the recessed surface 1514 and the sidewall 1516 of the core 1500 of the abrasive article 1306. As depicted in FIG.
  • this shape allows the cover plate 1308 to fit into the upper recessed portion 1510 of the core 1500 of the abrasive article 1306 and engage the recessed surface 1514 and the sidewall 1516.
  • the lower surface 2004 of the body 2000 of the cover platel08 can abut and engage the recessed surface 1514 of the upper recessed portion 1510 of the core 1500 of the abrasive article 1306.
  • the outer wall 2006 of the body 2000 of the cover plate 1308 can abut and engage the sidewall 1516 of the core 1500 of the abrasive article 1306 the surrounds, or circumscribes, the recessed surface 1514 of the upper recessed portion 1510 of the core 1500 of the abrasive article 1306.
  • the upper recessed portion 1510 of the core 1500 of the abrasive article 1306 is sized and shaped to receive the complimentary sized and shaped cover plate 1308 therein. Further, the cover plate 1308 fits into the upper recessed portion 1510 of the upper surface 1502 of the core 1500 of the abrasive article 1306, so that the upper surface 2002 of the cover plate 1308, i.e., the body 2000 of the cover plate 1308, is substantially coplanar with the upper surface 1502 of the core 1500 of the abrasive article 1306.
  • a generally cylindrical hub 2008 can extend outwardly from the lower surface 2004 of the body 2000 of the cover plate 1308 along a central axis 2010.
  • the cylindrical hub 2008 is configured to extend into the central bore 1518 of the core 1500 of the abrasive article 1306 when the cover plate 1308 is fitted into the upper recessed portion 1510 of the core 1500 of the abrasive article 1306.
  • FIG. 22 and FIG. 23 a generally cylindrical hub 2008 can extend outwardly from the lower surface 2004 of the body 2000 of the cover plate 1308 along a central axis 2010.
  • the cylindrical hub 2008 is configured to extend into the central bore 1518 of the core 1500 of the abrasive article 1306 when the cover plate 1308 is fitted into the upper recessed portion 1510 of the core 1500 of the abrasive article 1306.
  • D E can be less than or equal to 50% D B .
  • D E can be less than or equal to 45% D b , such as less than or equal to 40% D B , less than or equal to 35% D B , less than or equal to 30% D B , less than or equal to 25% D B , less than or equal to 20% D B , or less than or equal to 10% D B .
  • D E can be greater than or equal to 2.5% D B , such as greater than or equal to 5% D B , greater than or equal to 7.5% D B , or greater than or equal to 10% D b . It is to be understood that D E can be within a range between, and including, any of the maximum and minimum values of D E described herein.
  • the cover plate 1308, i.e., the body 2000 of the cover plate 1308, has a diameter, Dcp, and W RP of the core 1500 of the abrasive article 1306 can be greater than or equal to 10% Dcp.
  • W RP can be greater than or equal to 12.5% D Ep , such as greater than or equal to 15% DCP, greater than or equal to 17.5% Dcp, or greater than or equal to 20% Dcp.
  • WRP can be less than or equal to 30.0% Dcp, such as less than or equal to 27.5% Dcp, less than or equal to 25% Dcp, or less than or equal to 22.5% Dcp. It is to be understood that W RP can be within a range between and including any of the maximum and minimum % Dcp values described herein.
  • the upper recessed portion 1510, or the recessed surface 1514 of the upper recessed portion 1510 can have a surface area, A RP .
  • the cover plate 1510 e.g., the upper surface 1502 of the body 1500 of the cover plate, can have a surface area, Acp, and A RP can less than or equal to 75.0% Acp.
  • a RP can be less than or equal to 72.5% Acp, such as less than or equal to 70.0% Acp, less than or equal to 67.5% Acp, less than or equal to 65.0% Acp, less than or equal to 62.5% Acp, less than or equal to 60.0% Acp, or less than or equal to 57.5% Acp.
  • a RP can be greater than or equal to 40.0% Acp, such as greater than or equal to 42.5% Acp, greater than or equal to 45.0% Acp, greater than or equal to 47.5% Acp, greater than or equal to 50.0% Acp, greater than or equal to 52.5% Acp, or greater than or equal to 55.0% Acp. It is to be understood that A RP can be within a range between and including any of the maximum and minimum % Acp values described herein.
  • the core 1500 of the abrasive article 1306 can have an internal volume, Vc, that is the combined volume of the upper recessed portion 1510 of the core 1500 of the abrasive article 1306 and the central bore 1518 of the core 1500 of the abrasive article 1306.
  • Vc is the volume within the core 1500 of the abrasive article 1306, i.e., between the upper surface 1502 of the core 1500 and the lower surface 1504 of the core 1500, that is bound by the sidewall 1516 of the upper recessed portion 1510 of the core 1500, the recessed surface 1514 of the upper recessed portion 1510 of the core 1500, and the inner wall 1520 of the core 1500.
  • a displaced volume, V D which is the volume displaced, or filled, by the body 2000 of the cover plate 1308 when the cover plate 1308 is installed within the abrasive article 1306, e.g. within the upper recessed portion 1510 and the central bore 1518 of the core 1500, can be greater than or equal to 60.0% Vc- In another aspect, V D can be greater than or equal to 62.5% Vc, such as greater than or equal to 65.0% Vc, greater than or equal to 67.5% Vc, greater than or equal to 70.0% Vc, greater than or equal to 72.5% Vc, greater than or equal to 75.0% Vc, greater than or equal to 77.5% Vc, greater than or equal to 80.0% Vc, or greater than or equal to 82.5% Vc.
  • V D can be less than or equal to 100.0% Vc, such as less than or equal to 97.5% Vc, less than or equal to 95.0% Vc, less than or equal to 92.5% Vc, less than or equal to 90.0% Vc, less than or equal to 87.5% Vc, or less than or equal to 85.0% Vc. It is to be understood that V D can be within a range between, and including, any of the minimum and maximum values of V D described herein.
  • the body 2000 of the cover plate 1308 can include at least one bore 2012 extending through the cover plate 1308, i.e., between the upper surface 2002 and the lower surface 2004.
  • the at least one bore 2012 can be radially offset from the central axis 2010.
  • the at least one bore 2012 can be a smooth walled bore and may be sized and shaped to allow the at least one fastener 1510, shown in FIG. 15, to extend through the at least one bore 2012 and engage the at least one bore 2012 in a slip fit arrangement.
  • the body 2000 of the cover plate 1308 can include at least one generally semi-circular cutout 2014 that can be aligned with a manufacturing hole 1532 on the core 1500 of the abrasive article 1306 when the cover plate 1308 is installed within the abrasive article 1306 as shown in FIG. 24.
  • the cover plate 1308 can be made from a metal, a metal alloy, or a combination thereof. Further, the cover plate 1308 can be from a non-ferrous metal. For example, the cover plate 1308 can be made from aluminum, an aluminum alloy, or a combination thereof. Moreover, the cover plate 1308 can be made from copper, brass, or a combination thereof. Further still, the cover plate 1308 can be made from tin, bronze, or a combination thereof.
  • the configuration of structure described herein provides a grinding wheel assembly that substantially minimizes the splashing of cutting fluid, or coolant, on a workpiece during an edge grinding operation. This substantially minimizes swarf and debris from collecting on the workpiece and potentially causing scratches or other damage to the workpiece.
  • the manner in which the cover plate fits into the abrasive article and forms an enclosed surface at the top of the grinding wheel assembly can substantially minimize the splashing of coolant and swarf.
  • the shape of the cover plate relative to the upper recessed portion of the abrasive article e.g., the complimentary shape of the lower surface of the cover plate with respect to the recessed surface, provides a structure that evenly distributes the compressive forces on the recessed surface of the abrasive article from the threaded fasteners when the grinding wheel assembly is properly assembled.
  • This distribution of the compressive forces substantially minimizes, or eliminates, the cracking, or breaking, of the polymeric core of the abrasive article during assembly of the grinding wheel assembly.
  • the close fit of the cover plate within the upper recessed portion of the abrasive article can substantially minimize vibration of the abrasive article during edge grinding operations.
  • Embodiment 1 An abrasive article, comprising: a core comprising a polymer material, the core having an upper surface, an outer peripheral surface, an upper recessed portion extending into the core from the upper surface and a peripheral recess extending into the outer peripheral surface;
  • cover plate having an upper surface, wherein the cover plate fits into the upper recessed portion of the upper surface the core so that the upper surface of the cover plate is substantially coplanar with the upper surface of the core.
  • Embodiment 2 An abrasive article, comprising:
  • the core having an upper surface, an outer peripheral surface, an upper recessed portion extending into the core from the upper surface and an peripheral recess extending into the outer peripheral surface, wherein the upper recessed portion includes a recessed surface;
  • cover plate wherein the cover plate fits entirely within the upper recessed portion of the core and mates with the recessed surface.
  • Embodiment 3 An abrasive article, comprising:
  • the core having an upper surface, an outer peripheral surface, an upper recessed portion extending into the core from the upper surface and a peripheral recess extending into the outer peripheral surface, wherein the upper recessed portion is sized and shaped to receive a complimentary sized and shaped cover plate therein;
  • a bonded abrasive body disposed within the peripheral recess of the outer peripheral surface of the core.
  • Embodiment 4 The abrasive article of any of embodiments 1, 2, or 3, wherein the core further comprises a central bore and the cover plate extends at least partially into the central bore.
  • Embodiment 5 The abrasive article according to embodiment 4, wherein the bore has a depth, D B , and the cover plate extends into the bore at a depth, D E , and D E is less than or equal to 50% D B .
  • Embodiment 6 The abrasive article according to embodiment 5, wherein D E is less than or equal to 45% D B , such as less than or equal to 40% D B , less than or equal to 35% D B , less than or equal to 30% D B , less than or equal to 25% D B , less than or equal to 20% D B , or less than or equal to 15% D B .
  • Embodiment 7 The abrasive article according to embodiment 6, wherein D E is greater than or equal to 2.5% D B , such as greater than or equal to 5% D B , greater than or equal to 7.5% D b , or greater than or equal to 10% D B .
  • Embodiment 8 The abrasive article according to any of embodiments 1, 2, or 3, wherein the recessed portion has a radial width, WRP, and the core has a radial width, Wc, and W RP is greater than or equal to 40% Wc-
  • Embodiment 9 The abrasive article according to embodiment 8, wherein WRP is greater than or equal to 45% Wc, such as greater than or equal to 50% Wc, or greater than or equal to 55% Wc-
  • Embodiment 10 The abrasive article according to embodiment 9, wherein W RP is less than or equal to 75% Wc, such as less than or equal to 70% Wc, less than or equal to 65%
  • Embodiment 11 The abrasive article according to any of embodiments 1, 2, or 3 wherein the recessed portion has a radial width, WRP, and the cover plate has a diameter, Dcp, and WRP is greater than or equal to 10% Dcp.
  • Embodiment 12 The abrasive article according to embodiment 11, wherein WRP is greater than or equal to 12.5% Dcp, such as greater than or equal to 15% Dcp, greater than or equal to 17.5% Dcp, or greater than or equal to 20% Dcp.
  • Embodiment 13 The abrasive article according to embodiment 12, wherein WRP is less than or equal to 30.0% Dcp, such as less than or equal to 27.5% Dcp, less than or equal to 25% Dcp, or less than or equal to 22.5% Dcp.
  • Embodiment 14 The abrasive article according to any of embodiments 1, 2, or 3, wherein the recessed portion has a recessed surface formed at an angle, a, with respect to the upper surface and a is greater than or equal to 5°.
  • Embodiment 15 The abrasive article according to embodiment 14, wherein a is greater than or equal to 7.5°, such as greater than or equal to 10°, greater than or equal to 12.5°, or greater than or equal to 15°.
  • Embodiment 16 The abrasive article according to embodiment 15, wherein a is less than or equal to 30°, such as less than or equal to 27.5°, less than or equal to 25°, less than or equal to 22.5°, or less than or equal to 22°.
  • Embodiment 17 The abrasive article according to any of embodiments 1, 2, or 3, wherein the recessed portion has a surface area, ARP, and the cover plate has a surface area, Acp, and A RP is less than or equal to 75.0% Acp.
  • Embodiment 18 The abrasive article according to embodiment 17, wherein A RP is less than or equal to 72.5% Acp, such as less than or equal to 70.0% Acp, less than or equal to 67.5% Acp, less than or equal to 65.0% Acp, less than or equal to 62.5% Acp, less than or equal to 60.0% Acp, or less than or equal to 57.5% Acp.
  • Embodiment 19 The abrasive article according to embodiment 18, wherein A RP is greater than or equal to 40.0% Acp, such as greater than or equal to 42.5% Acp, greater than or equal to 45.0% Acp, greater than or equal to 47.5% Acp, greater than or equal to 50.0% Acp, greater than or equal to 52.5% Acp, or greater than or equal to 55.0% Acp.
  • a RP is greater than or equal to 40.0% Acp, such as greater than or equal to 42.5% Acp, greater than or equal to 45.0% Acp, greater than or equal to 47.5% Acp, greater than or equal to 50.0% Acp, greater than or equal to 52.5% Acp, or greater than or equal to 55.0% Acp.
  • Embodiment 20 The abrasive article according to any of embodiments 1, 2, or 3, wherein the cover plate is made from a metal, a metal alloy, or a combination thereof.
  • Embodiment 21 The abrasive article according to embodiment 20, wherein the cover plate is made from non-ferrous metal.
  • Embodiment 22 The abrasive article according to embodiment 21, wherein the cover plate is made from aluminum, an aluminum alloy, or a combination thereof.
  • Embodiment 23 The abrasive article according to embodiment 21, wherein the cover plate is made from copper, brass, or a combination thereof.
  • Embodiment 24 The abrasive article according to embodiment 23, wherein the cover plate is made from tin, bronze, or a combination thereof.
  • Embodiment 25 The abrasive article according to any of embodiments 1, 2, or 3, wherein no part of the abrasive article extends above the upper surface of the core.
  • Embodiment 26 The abrasive article according to any of embodiments 1, 2, or 3, wherein no part of the abrasive article or the cover plate extends above the upper surface of the core.
  • Embodiment 27 The abrasive article according to any of embodiments 1, 2, or 3, wherein the core comprises and an inner volume, Vc; the cover plate can displace a volume, VD, when the cover plate is installed within the core; and V D is greater than or equal to 60.0% Vc-
  • Embodiment 28 The abrasive article according to embodiment 27, wherein V D is greater than or equal to 62.5% Vc, such as greater than or equal to 65.0% Vc, greater than or equal to 67.5% Vc, greater than or equal to 70.0% Vc, greater than or equal to 72.5% Vc, greater than or equal to 75.0% Vc, greater than or equal to 77.5% Vc, greater than or equal to 80.0% Vc, or greater than or equal to 82.5% Vc.
  • V D is greater than or equal to 62.5% Vc, such as greater than or equal to 65.0% Vc, greater than or equal to 67.5% Vc, greater than or equal to 70.0% Vc, greater than or equal to 72.5% Vc, greater than or equal to 75.0% Vc, greater than or equal to 77.5% Vc, greater than or equal to 80.0% Vc, or greater than or equal to 82.5% Vc.
  • Embodiment 29 The abrasive article according to embodiment 28, wherein V D is less than or equal to 100.0% Vc, such as less than or equal to 97.5% Vc, less than or equal to 95.0% Vc, less than or equal to 92.5% Vc, less than or equal to 90.0% Vc, less than or equal to 87.5% Vc, or less than or equal to 85.0% Vc-
  • Embodiment 30 The abrasive article according to any of embodiments 1, 2, and 3, wherein the core comprises a polymer material.
  • Embodiment 31 The abrasive article according to embodiment 30, wherein the polymer material includes at least one of a polyamide (PA), a polybutylene terephthalate (PBT), a polyphenylene sulfide (PPS), ethylene tetrafluoroethylene (ETFE), a
  • PA polyamide
  • PBT polybutylene terephthalate
  • PPS polyphenylene sulfide
  • ETFE ethylene tetrafluoroethylene
  • PEEK polyetherketone
  • PET polyester
  • PEI polyethyleneimine
  • PESET polyethersulfone
  • PET polyethylene terephthalate
  • PPA polyphthalamide
  • PC polycarbonate
  • ABS acrylonitrile-butadiene-styrene
  • PC-ABS PC-ABS
  • Embodiment 32 The abrasive article according to embodiment 30, wherein the core further comprises reinforcing fibers.
  • Embodiment 33 The abrasive article according to embodiment 32, wherein the reinforcing fibers include at least one of glass fibers, carbon fibers, ceramic fibers, organic fibers, mineral fibers, or any combination thereof.
  • the terms “comprises,” “comprising,” “includes,” “including,” “has,” “having” or any other variation thereof, are intended to cover a non-exclusive inclusion.
  • a method, article, or apparatus that comprises a list of features is not necessarily limited only to those features but may include other features not expressly listed or inherent to such method, article, or apparatus.
  • “or” refers to an inclusive-or and not to an exclusive-or. For example, a condition A or B is satisfied by any one of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).
  • a single item when a single item is described herein, more than one item may be used in place of a single item. Similarly, where more than one item is described herein, a single item may be substituted for that more than one item.

Abstract

L'invention décrit un article abrasif qui peut inclure un noyau comprenant un matériau polymère. Le noyau peut comprendre une surface supérieure, une surface périphérique externe, une partie évidée supérieure s'étendant dans le noyau à partir de la surface supérieure et un évidement périphérique s'étendant dans la surface périphérique externe. L'article abrasif peut également comprendre un corps abrasif lié disposé à l'intérieur de l'évidement périphérique de la surface périphérique externe du noyau et une plaque de recouvrement ayant une surface supérieure. La plaque de recouvrement peut s'ajuster dans la partie évidée supérieure de la surface supérieure du noyau de sorte que la surface supérieure de la plaque de recouvrement soit sensiblement coplanaire avec la surface supérieure du noyau.
PCT/US2019/032189 2018-05-15 2019-05-14 Ensemble meule WO2019222193A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
KR1020207034870A KR20200141521A (ko) 2018-05-15 2019-05-14 연삭 휠 조립체
EP19802699.9A EP3793773A1 (fr) 2018-05-15 2019-05-14 Ensemble meule
BR112020023387-0A BR112020023387A2 (pt) 2018-05-15 2019-05-14 montagem de roda de moagem
CN201980039790.5A CN112313038A (zh) 2018-05-15 2019-05-14 研磨轮组件
CA3100328A CA3100328A1 (fr) 2018-05-15 2019-05-14 Ensemble meule
MX2020012224A MX2020012224A (es) 2018-05-15 2019-05-14 Ensamblaje de ruedas abrasivas.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862671534P 2018-05-15 2018-05-15
US62/671,534 2018-05-15

Publications (1)

Publication Number Publication Date
WO2019222193A1 true WO2019222193A1 (fr) 2019-11-21

Family

ID=68534041

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2019/032189 WO2019222193A1 (fr) 2018-05-15 2019-05-14 Ensemble meule

Country Status (8)

Country Link
US (1) US20190351530A1 (fr)
EP (1) EP3793773A1 (fr)
KR (1) KR20200141521A (fr)
CN (1) CN112313038A (fr)
BR (1) BR112020023387A2 (fr)
CA (1) CA3100328A1 (fr)
MX (1) MX2020012224A (fr)
WO (1) WO2019222193A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102390087B1 (ko) * 2020-04-07 2022-04-25 권정자 핸드 그라인더용 그라인더 날 고정장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09155736A (ja) * 1995-12-15 1997-06-17 Calsonic Corp 砥石フランジ締付用治具
JP2001105330A (ja) * 1999-10-08 2001-04-17 Adamas:Kk マルチ砥石およびこれに使用する砥石単板
US20040023599A1 (en) * 2002-08-02 2004-02-05 John Tunstall Abrasive tool having a unitary arbor
EP2363241A1 (fr) * 2010-03-05 2011-09-07 Giovanni Ficai Insert de ventilation pour outils abrasifs
CN106217277A (zh) * 2016-09-30 2016-12-14 湖南大学 柔性磨削砂轮、具有该砂轮的磨削装置及钢轨铣磨车

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB614437A (en) * 1946-03-27 1948-12-15 Teofil Leonard Bonkowski Rotary sand papering tool
US3636665A (en) * 1970-04-15 1972-01-25 Grinding Wheel Inst Inc Segmented grinding wheel
CN100522491C (zh) * 2007-11-15 2009-08-05 南京航空航天大学 钎焊金刚石热管砂轮
CN201552480U (zh) * 2009-11-09 2010-08-18 珠海市世创金刚石工具制造有限公司 一种胶基磨边轮
CN202528071U (zh) * 2012-03-31 2012-11-14 郑州磨料磨具磨削研究所 内冷式超硬材料砂轮
DE102013108918A1 (de) * 2013-08-19 2015-02-19 Saint-Gobain Diamantwerkzeuge Gmbh & Co. Kg Formabrichtrolle
CA2926429A1 (fr) * 2015-04-08 2016-10-08 sp3 Cutting Tools, Inc. Lame de broyage dotee de conduits de lubrification
CN105619271B (zh) * 2015-12-25 2017-09-01 郑州磨料磨具磨削研究所有限公司 一种切割砂轮内孔加工方法
CN205817587U (zh) * 2016-05-31 2016-12-21 重庆鼎祥钢结构工程有限公司 一种可拆卸金刚石磨砂轮

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09155736A (ja) * 1995-12-15 1997-06-17 Calsonic Corp 砥石フランジ締付用治具
JP2001105330A (ja) * 1999-10-08 2001-04-17 Adamas:Kk マルチ砥石およびこれに使用する砥石単板
US20040023599A1 (en) * 2002-08-02 2004-02-05 John Tunstall Abrasive tool having a unitary arbor
EP2363241A1 (fr) * 2010-03-05 2011-09-07 Giovanni Ficai Insert de ventilation pour outils abrasifs
CN106217277A (zh) * 2016-09-30 2016-12-14 湖南大学 柔性磨削砂轮、具有该砂轮的磨削装置及钢轨铣磨车

Also Published As

Publication number Publication date
CA3100328A1 (fr) 2019-11-21
EP3793773A1 (fr) 2021-03-24
BR112020023387A2 (pt) 2021-02-09
US20190351530A1 (en) 2019-11-21
CN112313038A (zh) 2021-02-02
KR20200141521A (ko) 2020-12-18
MX2020012224A (es) 2021-06-15

Similar Documents

Publication Publication Date Title
US20210101258A1 (en) Grinding wheel assembly
CA2324578C (fr) Outils abrasifs
US6093092A (en) Abrasive tools
KR101433747B1 (ko) 초연마 재료들을 포함하는 가공대상물을 그라인딩하는 방법들
EP3148742B1 (fr) Article abrasif présentant une âme qui comprend un matériau polymère
EP2106328B1 (fr) Meule à disque avec plaque de montage intégrée
EP2461943B1 (fr) Outil abrasif doté d'une répartition de la porosité contrôlée
WO2019222193A1 (fr) Ensemble meule
US7115029B2 (en) Abrasive cutting disk with lateral steel sheets
CN110799306A (zh) 磨料制品及其形成方法
KR20120125533A (ko) 초연마재 가공대상물의 그라인딩에 사용하기 위한 연마 물품
US11931866B2 (en) Grinding wheel assembly
Suzuki et al. GRINDING CHARACTERISTICS OF WHEELS WITH NEW cBN GRITS “ABN800”

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19802699

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 3100328

Country of ref document: CA

Ref document number: 2020564124

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112020023387

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 20207034870

Country of ref document: KR

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 2019802699

Country of ref document: EP

Effective date: 20201215

ENP Entry into the national phase

Ref document number: 112020023387

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20201116