EP1679152A1 - Grinding wheel - Google Patents

Grinding wheel Download PDF

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Publication number
EP1679152A1
EP1679152A1 EP05077876A EP05077876A EP1679152A1 EP 1679152 A1 EP1679152 A1 EP 1679152A1 EP 05077876 A EP05077876 A EP 05077876A EP 05077876 A EP05077876 A EP 05077876A EP 1679152 A1 EP1679152 A1 EP 1679152A1
Authority
EP
European Patent Office
Prior art keywords
grinding
wheel
wheel according
elements
grinding wheel
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP05077876A
Other languages
German (de)
French (fr)
Inventor
Adrianus Gerardus Van Houten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Blastrac BV
Original Assignee
Blastrac BV
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 Blastrac BV filed Critical Blastrac BV
Publication of EP1679152A1 publication Critical patent/EP1679152A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
    • B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type tools
    • 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

  • the invention relates to a grinding wheel according to the preamble of claim 1.
  • a grinding wheel of this type is known from US 3,745,719.
  • the known grinding wheel comprises a metal wheel with one surface on which a plurality of rectangular diamond-containing grinding elements are arranged.
  • the known grinding wheel therefore has a single grinding side.
  • the grinding wheel according to the invention has two grinding sides and lasts as long as two grinding wheels which can only be used on one side and the respective grinding sides of which correspond to the grinding sides of the grinding wheel according to the invention. Since the materials and manufacturing costs of the metal wheel represent a considerable proportion of the total cost price of a grinding wheel and according to the invention just one metal wheel is required to achieve the same service life as two of the known single-sided grinding wheels, the grinding wheel according to the invention is therefore in relative terms less expensive.
  • the grinding elements on the first and second flat surfaces of the wheel prefferably have different grinding actions.
  • a single wheel can be used to treat different floor surfaces.
  • a soft floor surface can be ground using grinding elements with a very hard diamond-steel compound on one side of the wheel, while a harder floor surface can be ground using grinding elements with a less hard diamond-steel compound on the other side of the wheel. This makes the grinding wheel according to the invention versatile to use.
  • all the grinding elements prefferably be of the same shape. This further limits the production costs of the grinding wheel.
  • Figs. 1 - 3 show a circular metal, preferably steel, wheel 1 with a first side 1a and a second side 1b.
  • the wheel 1 is approximately 8 mm thick and its diameter is approximately 250 mm.
  • the wheel 1 has a central opening 2, in this example with a wavy edge 3, in the middle.
  • the central opening 2 in the wheel 1 is preferably formed by means of laser cutting.
  • the circumference of the opening 2 is in this case described by a laser beam so that the central part of the wheel 1 is cut out.
  • the central opening 2 is used to couple the wheel 1 to a coupling part (not shown) of a drive shaft of a grinding machine.
  • the coupling part (not shown) comprises toothing which is of a complementary shape to the circumferential shape of the central hole 2.
  • first securing holes 4 and four second securing holes 5 with a diameter of preferably about 11 mm are arranged on an imaginary circle around the central opening 2.
  • the first securing holes 4 and second securing holes 5 are located alternately around the circle.
  • the securing holes 4 and 5 each have a conical section 4a and 5a, respectively, the diameter of the conical section 4a and 5a being approximately 22 mm at the wheel surface 1a or 1b, respectively.
  • first securing holes 4 During use, bolts or other securing means pass through the first securing holes 4 if the first side 1a of the wheel 1 faces towards the surface to be ground. In this case, the head of the bolt or the like, in this first fitted state, is recessed into the conical part 4a, below the surface 1a. The second securing holes 5 are not used in this first fitted state.
  • Fig. 4 shows a preferred embodiment of a grinding wheel 10 according to the invention.
  • the grinding wheel 10 comprises a metal wheel 1 as described above with reference to Figs. 1 - 3.
  • Elongate, curved grinding elements 11 which extend substantially in the tangential direction are arranged at the edge of the metal wheel 1, on both sides 1a and 1b of the wheel.
  • the radius of curvature of the radially outermost surface of the grinding elements 11 corresponds to the radius of curvature of the outer circumference of the wheel 1.
  • curved elongate grinding elements 12 which extend substantially in the radial direction of the wheel 1 are arranged on both sides 1a and 1b of the wheel 1.
  • One of the end edges of the grinding elements 12 is located at or close to the outer circumference of the circular wheel 1.
  • the radially arranged grinding elements 12 on the first side 1a and on the second side 1b have their concave sides facing in opposite directions, as will be clear from Fig. 5.
  • the tangentially and radially arranged grinding elements 11 and 12 are identical in form, which limits the manufacturing costs of the grinding elements and therefore the cost price of the grinding wheel 10.
  • the grinding surface of the grinding elements 11 and 12 lies approximately 10 mm above the surface of the wheel 1 on which they are arranged, i.e. the first side 1a or the second side 1b.
  • the grinding elements 11 and 12 are preferably made from a diamond-containing diamond-steel compound. It is possible for the grinding elements 11 and 12 which are arranged on one side 1a of the wheel 1 to be made from a different compound from the grinding elements 11, 12 which are arranged on the second side 1b of the wheel 1. This makes it possible to produce a grinding wheel 10 with different grinding actions on each side. It is also possible for diamond-containing grinding elements 11, 12 to be arranged on one side 1a, while grinding elements 11, 12 made from a compound which does not contain diamonds are arranged on the other side 1b.
  • the grinding elements 11 and 12 are welded to the wheel 1, but other suitable joining methods are of course also possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Grinding wheel for a floor grinding machine, comprising a metal wheel (1) with a first and a second flat surface. Diamond-containing grinding elements (11, 12) are arranged on the first flat surface. Grinding elements (11, 12), preferably diamond-containing, are also arranged on the second flat surface of the wheel (1).

Description

  • The invention relates to a grinding wheel according to the preamble of claim 1.
  • A grinding wheel of this type is known from US 3,745,719. The known grinding wheel comprises a metal wheel with one surface on which a plurality of rectangular diamond-containing grinding elements are arranged. The known grinding wheel therefore has a single grinding side.
  • It is an object of the invention to provide a grinding wheel which makes more efficient use of materials.
  • This object is achieved by a grinding wheel according to the preamble of claim 1, characterized in that grinding elements are also arranged on the second flat surface of the wheel.
  • The grinding wheel according to the invention has two grinding sides and lasts as long as two grinding wheels which can only be used on one side and the respective grinding sides of which correspond to the grinding sides of the grinding wheel according to the invention. Since the materials and manufacturing costs of the metal wheel represent a considerable proportion of the total cost price of a grinding wheel and according to the invention just one metal wheel is required to achieve the same service life as two of the known single-sided grinding wheels, the grinding wheel according to the invention is therefore in relative terms less expensive.
  • It is preferable for the grinding elements on the first and second flat surfaces of the wheel to have different grinding actions. As a result, a single wheel can be used to treat different floor surfaces. By way of example, a soft floor surface can be ground using grinding elements with a very hard diamond-steel compound on one side of the wheel, while a harder floor surface can be ground using grinding elements with a less hard diamond-steel compound on the other side of the wheel. This makes the grinding wheel according to the invention versatile to use.
  • It is preferable for all the grinding elements to be of the same shape. This further limits the production costs of the grinding wheel.
  • The invention will be explained in more detail with reference to the drawing, in which:
    • Fig. 1 shows a perspective view of a metal wheel for a grinding wheel according to the invention,
    • Fig. 2 shows a front view of the metal wheel from Fig. 1,
    • Fig. 3 shows a cross section through the wheel on line A-A in Fig. 2,
    • Fig. 4 shows a perspective view of a preferred embodiment of a grinding wheel according to the invention, and
    • Fig. 5 shows a front view of the grinding wheel from Fig. 4.
  • Figs. 1 - 3 show a circular metal, preferably steel, wheel 1 with a first side 1a and a second side 1b. According to a preferred embodiment, the wheel 1 is approximately 8 mm thick and its diameter is approximately 250 mm. The wheel 1 has a central opening 2, in this example with a wavy edge 3, in the middle. The central opening 2 in the wheel 1 is preferably formed by means of laser cutting. The circumference of the opening 2 is in this case described by a laser beam so that the central part of the wheel 1 is cut out. The central opening 2 is used to couple the wheel 1 to a coupling part (not shown) of a drive shaft of a grinding machine. The coupling part (not shown) comprises toothing which is of a complementary shape to the circumferential shape of the central hole 2.
  • Four first securing holes 4 and four second securing holes 5 with a diameter of preferably about 11 mm are arranged on an imaginary circle around the central opening 2. The first securing holes 4 and second securing holes 5 are located alternately around the circle. The securing holes 4 and 5 each have a conical section 4a and 5a, respectively, the diameter of the conical section 4a and 5a being approximately 22 mm at the wheel surface 1a or 1b, respectively.
  • During use, bolts or other securing means pass through the first securing holes 4 if the first side 1a of the wheel 1 faces towards the surface to be ground. In this case, the head of the bolt or the like, in this first fitted state, is recessed into the conical part 4a, below the surface 1a. The second securing holes 5 are not used in this first fitted state.
  • When the wheel 1 is turned over in order for the opposite side to be fitted to the grinding machine, bolts or the like are also passed through the securing holes 5, with the head of the bolts once again being recessed within the conical section 5a. In this second fitted state, the securing holes 4 are not used.
  • Fig. 4 shows a preferred embodiment of a grinding wheel 10 according to the invention. The grinding wheel 10 comprises a metal wheel 1 as described above with reference to Figs. 1 - 3. Elongate, curved grinding elements 11 which extend substantially in the tangential direction are arranged at the edge of the metal wheel 1, on both sides 1a and 1b of the wheel. The radius of curvature of the radially outermost surface of the grinding elements 11 corresponds to the radius of curvature of the outer circumference of the wheel 1.
  • Furthermore, curved elongate grinding elements 12 which extend substantially in the radial direction of the wheel 1 are arranged on both sides 1a and 1b of the wheel 1. One of the end edges of the grinding elements 12 is located at or close to the outer circumference of the circular wheel 1. The radially arranged grinding elements 12 on the first side 1a and on the second side 1b have their concave sides facing in opposite directions, as will be clear from Fig. 5.
  • In the example shown, the tangentially and radially arranged grinding elements 11 and 12 are identical in form, which limits the manufacturing costs of the grinding elements and therefore the cost price of the grinding wheel 10. The grinding surface of the grinding elements 11 and 12 lies approximately 10 mm above the surface of the wheel 1 on which they are arranged, i.e. the first side 1a or the second side 1b.
  • The grinding elements 11 and 12 are preferably made from a diamond-containing diamond-steel compound. It is possible for the grinding elements 11 and 12 which are arranged on one side 1a of the wheel 1 to be made from a different compound from the grinding elements 11, 12 which are arranged on the second side 1b of the wheel 1. This makes it possible to produce a grinding wheel 10 with different grinding actions on each side. It is also possible for diamond-containing grinding elements 11, 12 to be arranged on one side 1a, while grinding elements 11, 12 made from a compound which does not contain diamonds are arranged on the other side 1b.
  • It is preferable for the grinding elements 11 and 12 to be welded to the wheel 1, but other suitable joining methods are of course also possible.
  • It should be noted that in the embodiment shown a central opening 2 with a wavy shape is formed in the grinding wheel 10, but any other suitable shape of hole, for example circular or square, is also fundamentally possible.

Claims (18)

  1. Grinding wheel for a floor grinding machine, comprising a metal wheel with a first and a second flat surface, diamond-containing grinding elements being arranged on the first flat surface, characterized in that grinding elements are also arranged on the second flat surface of the wheel.
  2. Grinding wheel according to claim 1, characterized in that the grinding elements on the first and second flat surfaces of the wheel have different grinding actions.
  3. Grinding wheel according to claim 1 or 2, characterized in that the grinding elements arranged on the second flat surface are diamond-containing.
  4. Grinding wheel according to one of the preceding claims, characterized in that the wheel is substantially circular.
  5. Grinding wheel according to one of the preceding claims, characterized in that at least some of the grinding elements are arranged at or close to the circumferential edge of the wheel.
  6. Grinding wheel according to one of the preceding claims, characterized in that the grinding elements are welded to the wheel.
  7. Grinding wheel according to one of the preceding claims, characterized in that the grinding elements are elongate in form.
  8. Grinding wheel according to claim 7, characterized in that at least some of the grinding elements extend substantially in the tangential direction.
  9. Grinding wheel according to claim 7, characterized in that at least some of the grinding elements extend substantially in the radial direction.
  10. Grinding wheel according to claims 8 and 9, characterized in that the grinding elements which extend in the tangential direction and the grinding elements which extend in the radial direction are arranged alternately in the vicinity of the circumferential edge of the grinding wheel.
  11. Grinding wheel according to claim 8, characterized in that the tangentially extending grinding elements are curved.
  12. Grinding wheel according to claim 9, characterized in that the radially extending grinding elements are curved.
  13. Grinding wheel according to one of the preceding claims, characterized in that all the grinding elements are of the same shape.
  14. Grinding wheel according to one of the preceding claims, characterized in that the diamond-containing grinding elements comprise a diamond-steel compound.
  15. Grinding wheel according to one of the preceding claims, characterized in that the wheel is provided with a central opening for coupling to a drive shaft of the grinding machine.
  16. Grinding wheel according to claim 15, characterized in that the central opening is delimited by an edge which is wavy in form.
  17. Grinding wheel according to claim 15 or 16, characterized in that the central opening is formed by laser cutting.
  18. Grinding wheel according to one of the preceding claims, characterized in that securing holes for securing means to fit through are arranged in the wheel, the holes being formed in such a manner that the head of the securing means, in the fitted state. is recessed below the level of the surface of the wheel.
EP05077876A 2005-01-11 2005-12-13 Grinding wheel Withdrawn EP1679152A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1028002A NL1028002C2 (en) 2005-01-11 2005-01-11 Sanding disc.

Publications (1)

Publication Number Publication Date
EP1679152A1 true EP1679152A1 (en) 2006-07-12

Family

ID=34974949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077876A Withdrawn EP1679152A1 (en) 2005-01-11 2005-12-13 Grinding wheel

Country Status (3)

Country Link
US (1) US20060154583A1 (en)
EP (1) EP1679152A1 (en)
NL (1) NL1028002C2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162847A (en) * 2014-07-31 2014-11-26 江苏美杰磨具科技有限公司 Diamond grinding disk for road surface grinding
USD978936S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978935S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978934S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978937S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110097979A1 (en) * 2009-10-26 2011-04-28 Illinois Tool Works Inc. Fusion Bonded Epoxy Removal Tool
NL2016421B1 (en) 2016-03-11 2017-10-02 Blastrac B V Double-sided sanding disc with quick-change system.
CN111571465B (en) * 2019-04-17 2021-07-06 江苏友美工具有限公司 Hard concrete grinding disc and preparation method thereof
JP7233132B2 (en) * 2020-12-07 2023-03-06 株式会社丸高工業 rotary cutting tool
WO2023055649A1 (en) * 2021-09-29 2023-04-06 Entegris, Inc. Double-sided pad conditioner
CN113858059A (en) * 2021-10-10 2021-12-31 北京工业大学 Mosaic clamping plate type diamond grinding wheel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB449663A (en) * 1934-12-05 1936-07-01 Norton Grinding Wheel Co Ltd Improvements in grinding disk
DE804762C (en) * 1948-10-02 1951-04-30 Krusius Geb Device for sharpening the blades of knives u. like
US3745719A (en) * 1971-12-13 1973-07-17 F Oswald Grinding wheel for floor grinding machine
DE10161931A1 (en) * 2001-12-17 2003-06-18 Hilti Ag Grinding wheel with grinding segments
WO2004108352A2 (en) * 2003-06-11 2004-12-16 Htc Sweden Ab Carrier plate holding an abrading element and abrading plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1027536A (en) * 1911-08-05 1912-05-28 Roland Gardner Abrading-wheel.
US2225193A (en) * 1937-09-15 1940-12-17 Carborundum Co Abrasive wheel
USRE25434E (en) * 1959-04-20 1963-08-13 Abrasive cutting devices
US6196911B1 (en) * 1997-12-04 2001-03-06 3M Innovative Properties Company Tools with abrasive segments
US6632131B1 (en) * 2000-02-03 2003-10-14 Terry L. Buchholz Combination rotary cutting and sanding blade
US6827074B2 (en) * 2002-05-24 2004-12-07 Datigen.Com, Inc. Method and apparatus for removing trip hazards in concrete sidewalks

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB449663A (en) * 1934-12-05 1936-07-01 Norton Grinding Wheel Co Ltd Improvements in grinding disk
DE804762C (en) * 1948-10-02 1951-04-30 Krusius Geb Device for sharpening the blades of knives u. like
US3745719A (en) * 1971-12-13 1973-07-17 F Oswald Grinding wheel for floor grinding machine
DE10161931A1 (en) * 2001-12-17 2003-06-18 Hilti Ag Grinding wheel with grinding segments
WO2004108352A2 (en) * 2003-06-11 2004-12-16 Htc Sweden Ab Carrier plate holding an abrading element and abrading plate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104162847A (en) * 2014-07-31 2014-11-26 江苏美杰磨具科技有限公司 Diamond grinding disk for road surface grinding
USD978936S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978935S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978934S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc
USD978937S1 (en) * 2020-06-25 2023-02-21 Saint-Gobain Abrasives, Inc. Floor edger sanding disc

Also Published As

Publication number Publication date
US20060154583A1 (en) 2006-07-13
NL1028002C2 (en) 2006-07-12

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