US3471975A - Surfacing wheel - Google Patents

Surfacing wheel Download PDF

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Publication number
US3471975A
US3471975A US608826A US3471975DA US3471975A US 3471975 A US3471975 A US 3471975A US 608826 A US608826 A US 608826A US 3471975D A US3471975D A US 3471975DA US 3471975 A US3471975 A US 3471975A
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United States
Prior art keywords
surfacing
wheel
satellite
axis
rotation
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Expired - Lifetime
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US608826A
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English (en)
Inventor
Carle W Highberg
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Engelhard Hanovia Inc
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Engelhard Hanovia Inc
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    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/242—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for plate glass
    • B24B7/244—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for plate glass continuous
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • 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
    • 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
    • B24D7/14—Zonally-graded wheels; Composite wheels comprising different abrasives

Definitions

  • FIG. 4 MQW LM his ATTORNEYS United States Patent SURFACING WHEEL Carle W. Highberg, Murray Hill, N.J., assignor to Engelhard Hanovia, Inc., Newark, N.J., a corporation of New Jersey Filed Jan. 12, 1967, Ser. No. 608,826 Int. Cl. B24d 7/06 US. Cl.
  • a surfacing wheel having substantially coplanar, radially disposed, fixed abrasive contact areas for abrasively engaging fiat materials, such as sheets of plate glass, the configuration, relative size and arrangement of contact areas being of a predetermined manner and size to effect controlled successive surfacing operations.
  • the present invention relates to a surfacing wheel for surfacing flat materials such as sheets of glass and, more particularly, to novel and improved construction, configuration and arrangement of fixed abrasive contact areas therein for providing substantially improved surface quality and stability of operation.
  • Multi-section fixed abrasive grinding wheels have been developed having either fixed abrasive particles disposed in matrices of uniform concentration and particle size for specific grinding operations, or of progressively varying concentration and particle size in different annular portions of the contact surface of the grinding wheel.
  • Such grinding wheels have the fixed abrasive contact areas positioned in annular zones about the axis of rotation of a substantially flat unitary surfacing wheel or disc, or have incorporated a plurality of distinct radial elements or smaller wheels in the form of a spider for grinding and polishing purposes.
  • the fine surfacing of materials conventionally involves a series of successive surfacing steps which may utilize abrasive materials of different particle sizes, concentrations or even different types. Surfacing apparatus and techniques satisfactory for one stage of the surfacing operation are not necessarily satisfactory for some other stage of the operation.
  • the contact surfaces may naturally form during the breaking-in process an outer annular zone and an inner annular zone each diverging outwardly at a slight angle from the original plane of the wheel surface from a generally annular high point or ridge lying within the general contact zone and disposed radially about the axis of rotation.
  • a first surfacing operation may be accomplished by the outer portion of the grinding wheel (the divergent inner portion not being in contact with the sheet of glass being surfaced).
  • a novel and improved surfacing or grinding wheel comprising a plurality of satellite surfacing means (either the contact surfaces or radially disposed spider elements or radially disposed distinct sectors in a solid wheel), the contact element of each of the satellite surfacing means having a predetermined outer portion and a predetermined inner portion lying respectively in concentric outer and inner annular zones about the axis of rotation.
  • the total engageable area of all of the contact element inner portions relative to the total area of the inner annular zone is of a greater proportion than the total engageable area of all of the contact element outer portions relative to the total area of the outer annular zone, the total engageable area of all the contact element inner portions being greater than the total engageable area of all of the contact element outer portions.
  • At least one of the inner and outer contact element portions of each of the satellite surfacing means may have a plurality of distinct adjacent contact areas of different abrasive characteristics disposed at least in part at equal radial distances from the axis of rotation for sequentially engaging the material to be surfaced to provide interplay of the adjacent contact areas in the surfacing operation.
  • FIGURE 1 is a schematic representation of an exemplary embodiment of a surfacing wheel having a plurality of satellite surfacing means in engagement with a sheet of flat material, in accordance with the invention
  • FIG. 2 is an exaggerated side elevation in cross section of the surfacing wheel and sheet of flat material of FIG. 1, taken along the lines 22 and looking in the ,direction of the arrows;
  • FIG. 3 is a schematic representation of the contact area surface of one of the satellite surfacing means of FIG. 1;
  • FIG. 4 is a partial broken-away side elevation of the satellite surfacing means of FIG. 3 disclosing the spaced apart discrete pellets forming the contact elements of the surfacing wheel;
  • FIG. 5 is a perspective view of an alternate embodiment of a substantially flat, unitary surfacing wheel hav- 3 ing a plurality of radially disposed satellite means, in accordance with the invention.
  • a surfacing Wheel 10 including five separate satellite surfacing means 11 adapted to be rotatahly driven about an axis of rotaton 12 and disposed in different respective sectors in the form of a spider wheel, is suitably positioned in surfacing engagement with the surface of a flat sheet of material 14, such as a sheet of plate glass, which may be relatively and cooperatively moved in a predetermined directional sense through the surfacing station including the surfacing Wheel 10 in a plane transverse to the axis of rotation 12.
  • the satellite surfacing means 11 are each suitably mounted on the conventional support structure of the surfacing wheel 10 in a relatively nonrotatable manner, i.e. not rotatable about their own centers but adapted as a composite unit to rotate about the axis of rotation 12.
  • annular high point or ridge 15 is formed on the otherwise substantially coplanar contact element surfaces of each of the satellite surfacing means 11 to divide the contact element of each of the satellite surfacing means 11 into a predetermined outer portion 16 and an inner portion 17 lying respectively in concentric inner and outer annular zones 18 and 19 about the axis of rotation 12.
  • the contact element of each of the satellite surfacing means 11 (as shown in FIG.
  • the engageable area of the contact elements of the satellite surface means 11 are formed by the substantially coplanar exposed outer surfaces 30 of a plurality of spaced-apart discrete pellets 31 (FIGS. 3 and 4) which may be any type of suitable metallic or resinoid matrix in which abrasive particles such as diamond particles may be fixedly bonded in respective predetermined concentrations, the diamond particles being of predetermined particle size or within a predetermined range of particle sizes.
  • the discrete pellets 31 are suitably mounted on or attached to a backplate 32 of the satellite surfacing means 11.
  • the spacing between the pellets 31 (which may be of any suitable configuration, but preferably cylindrical) is of a magnitude such as to facilitate the distribution of conventional coolant flow generally radially outward across the contact element of the satellite surfacing means 11 from any suitable conventional source, preferably located in the center portion of the surfacing wheel 10.
  • Each of the six pie-shaped sections 21-26 are preferably 45 sections, with the section 27 being a 90 section.
  • the contact surface area of the 90 section 27 is arcuately truncated along the line 34 relative to the axis of rotation 12.
  • the backplate 32 of the 90 section 27 extends inwardly toward the axis of rotation 12 to form a pocket between the line 34 and the generally circular boundary of the satellite surfacing means 11, which does not contain pellets 31, but which serves to collect and facilitate the distribution of lubricant or coolant across the face of the contact area.
  • the pellets 31 forming the 90 section 27 contain abrasive particles such as diamonds of predetermined particle size (e.g. in the order of to 30 microns) in a first predetermined concentration C (e.g. 2.1 carats per cubic inch).
  • the pellets 31 of the sections 25 and 26 contain abrasive particles in a second and lesser predetermined concentration C (e.g. 1.7 carats per cubic inch).
  • abrasive particles in a third and still lower concentration C (e.g. 1.3 carats per cubic inch).
  • a substantially flat, unitary surfacing wheel 40 adapted to be rotatably driven in any conventional manner about an axis of rotation contains a plurality of integral satellite surfacing means 41 constituting raised portions having coplanar contact elements, which function in the same manner as the spider wheel 10 of FIGS. 1 and 2.
  • the flat material In operation, with the sheet of fiat material 14 being fed in the direction of the arrows in FIGS. 1 and 2, the flat material first comes into abrasive engagement with the outer portion 16 of each of the respective satellite surfacing means 11 as they pass transversely across the surface of the material 14 (see FIG. 2.). At that point of engagement, the inner portion 17 of the contact element of the satellite surfacing means 11 is not in engagement with the material 14. Thus a first surfacing operation is performed by the abrasive particles in pellets 31 lying in zone I, of a concentration C The sheet of material 14 then passes through the axis of rotation 12 and comes into abrasive contact with the inner portion 17 of the contact element of the satellite surfacing means 11 as it traverses the sheet of material 14.
  • the surfacing wheel 10 primarily provides a cutting function, progressively bringing more abrasive material of uniform concentration and particle size into play as the material 14 moves across the outer portion 16.
  • the surface quality is improved by equal or greater abrasive particle (diamond) impingement on the material being surfaced as it advances across the inner portion 17.
  • abrasive particle impingement is produced by the interplay of pellets having abrasive particles of materially different concentration in adjacent sections at equal radial distances from the axis of rotation 12. As the effective concentration decreases, the number of pellets engaged increases.
  • surfacing wheel having a plurality of distinct surfacing contact areas which are progressively brought into abrasive contact with the material to be surfaced in a unique predetermined manner.
  • the above described embodiments are meant to be merely exemplary and that they are susceptible of modification and variation without departing from the spirit and scope of the invention.
  • the abrasive contact areas may be of any other suitable shape whereby a controlled variable surfacing operation is accomplished.
  • the spider elements while relatively non-rotatable with respect to the axis of rotation of the overall surfacing wheel may be either rigid or individually tiltable, so as to conform more readily to the work surface. Therefore, the invention is not deemed to be limited except as defined in the appended claims.
  • a surfacing wheel for surfacing flat materials adapted to be rotatably driven about an axis of rotation, the surfacing wheel and the material to be surfaced being relatively and cooperatively movable in a predetermined directional sense in a plane transverse to the axis of rotation to facilitate surfacing of the material, comprising a plurality of satellite surfacing means having substantially coplanar contact elements adapted to abrasively engage the material to be surfaced and being radially disposed about the axis of rotation in different respective sectors and spaced apart from each other and the axis of rotation, said contact element of each of said satellite surfacing means having a predetermined outer portion and a predetermined inner portion lying respectively in concentric outer and inner annular zones about the axis of rotation, the total engageable area of all of said contact element inner portions relative to the total area of said inner annular zone being of a greater proportion than the total engageable area of all of said contact element outer portions relative to the total area of said outer annular zone, the total engageable area of all of said contact element inner portions being
  • each of said satellite contact elements having abrasive particles of predetermined particle size fixedly bonded therein in respective predetermined concentrations.
  • each of said satellite contact elements comprising a plurality of spacedapart discrete pellets composed of diamond particles of predetermined concentration and particle size fixedly bonded in a matrix.
  • a surfacing wheel as claimed in claim 1 said satellite surfacing means comprising relatively non-rotatable radial elements in the form of a spider wheel.
  • a surfacing wheel as claimed in claim 1 said satellite surfacing means constituting predetermined portions of a substantially flat, unitary surfacing wheel.
  • each of said satellite surfacing means contact elements is a generally circular arrangement of relatively nonrotatable generally pie-shaped sections disposed about a respective center point radially spaced equidistant from the axis of rotation of the surfacing wheel.
  • a surfacing wheel as claimed in claim 8 wherein at least the radially innermost one of said pie-shaped sections of each of said satellite contact elements is arcuately truncated relative to the axis of rotation.
  • each of said satellite surfacing means contact elements is a generally circular arrangement of relatively non-rotatable generally pie-shaped sections disposed about a respective center point radially spaced equidistant from the axis of rotation of the surfacing wheel.
  • each of said satellite surfacing means comprises a relatively non-rotatable radial element thereof, said satellite surfacing means contact element having a plurality of non-rotatable generally pie-shaped sections disposed in a generally circular arrangement about a center point radially spaced from the surfacing wheel axis of rotation, at least the radially innermost one of said pieshaped sections being arcuately truncated on an are spaced a predetermined radial distance from and about the axis of rotation, all of the remaining ones of said pie-shaped sections being radially spaced from the axis of rotation by at least a distance equal to said predetermined radial distance, at least the radially innermost one of said arcuately truncated sections having diamond particles fixedly bonded therein of a first predetermined concentration, adjacent ones of said pie-shaped sections having portions radially equidistant from the axis of rotation with portions of said

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US608826A 1967-01-12 1967-01-12 Surfacing wheel Expired - Lifetime US3471975A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60882667A 1967-01-12 1967-01-12

Publications (1)

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US3471975A true US3471975A (en) 1969-10-14

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US608826A Expired - Lifetime US3471975A (en) 1967-01-12 1967-01-12 Surfacing wheel

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US (1) US3471975A (da)
BE (1) BE709163A (da)
FR (1) FR1554931A (da)
GB (1) GB1211751A (da)
NL (1) NL6800441A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012187655A (ja) * 2011-03-09 2012-10-04 Disco Corp 研削装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439662A (en) * 1944-06-30 1948-04-13 Kidd Frederick Chuck and faceplate for grinding machines
US2451295A (en) * 1944-11-08 1948-10-12 Super Cut Abrasive wheel
US2867063A (en) * 1956-02-28 1959-01-06 Super Cut Multiple grinding wheel
US3026655A (en) * 1957-06-04 1962-03-27 Bisterfeld & Stolting Face grinding wheel
US3121982A (en) * 1960-08-25 1964-02-25 Cons Diamond Dev Company Ltd Grinding wheel with adjustable abrasive segments
US3299579A (en) * 1964-01-17 1967-01-24 Heald Machine Co Grinding machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2439662A (en) * 1944-06-30 1948-04-13 Kidd Frederick Chuck and faceplate for grinding machines
US2451295A (en) * 1944-11-08 1948-10-12 Super Cut Abrasive wheel
US2867063A (en) * 1956-02-28 1959-01-06 Super Cut Multiple grinding wheel
US3026655A (en) * 1957-06-04 1962-03-27 Bisterfeld & Stolting Face grinding wheel
US3121982A (en) * 1960-08-25 1964-02-25 Cons Diamond Dev Company Ltd Grinding wheel with adjustable abrasive segments
US3299579A (en) * 1964-01-17 1967-01-24 Heald Machine Co Grinding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012187655A (ja) * 2011-03-09 2012-10-04 Disco Corp 研削装置

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Publication number Publication date
GB1211751A (en) 1970-11-11
NL6800441A (da) 1968-07-15
BE709163A (da) 1968-07-10
FR1554931A (da) 1969-01-24

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